Init

anwendung/src/components/CalenderView.jsx

@@ -23,9 +23,13 @@ export default function CalenderView(p) {
     function readEntries() {
         let url = "http://localhost:8080/entries?semesterid=" + localStorage.getItem("currentsid") +
             "&daynumber=" + currentWeekStartDay + "&yearnumber=" + currentYear + "&sessionid=" + localStorage.getItem("sessionid");
+        try {
             fetch(url).then(r => r.json()).then(en => {
                 setEntries(en)
             })
+        }catch (e) {
+
+        }
     }
 
     function pushEntry(currentColumnID, row) {
@@ -119,13 +123,52 @@ export default function CalenderView(p) {
             let row = Math.floor((y_window - y_target_offset) / cellHeight) + 1;
             let currentColumnID = parseInt(e.currentTarget.id)
 
-            if (grabbedDown)
+            if (grabbedDown) {
+                if (row - 1 > selectedElement.timestart) {
+
+                    let free = true;
+                    for(let i = 0; i < entries[currentColumnID].length; i++)
                     {
+                        if(entries[currentColumnID][i] != null && selectedElement !== entries[currentColumnID][i])
+                        {
+                            if(row <= entries[currentColumnID][i].timeend &&
+                                row >= entries[currentColumnID][i].timestart ||
+                                row > entries[currentColumnID][i].timeend &&
+                                selectedElement.timestart < entries[currentColumnID][i].timestart)
+                            {
+                                free = false;
+                                break;
+                            }
+                        }
+                    }
+
+                    if(free) {
                         selectedElement.timeend = row + 1;
-            }else
+                    }
+                }
+            } else if (row + 2 < selectedElement.timeend)
+            {
+                let free = true;
+                for(let i = 0; i < entries[currentColumnID].length; i++)
+                {
+                    if(entries[currentColumnID][i] != null && selectedElement !== entries[currentColumnID][i])
+                    {
+                        if(row < entries[currentColumnID][i].timeend &&
+                            row >= entries[currentColumnID][i].timestart ||
+                            row < entries[currentColumnID][i].timestart &&
+                            selectedElement.timeend > entries[currentColumnID][i].timestart)
+                        {
+                            free = false;
+                            break;
+                        }
+                    }
+                }
+
+                if(free)
                 {
                     selectedElement.timestart = row;
                 }
+            }
             setUpdate(!update);
         }
     }
@@ -136,6 +179,7 @@ export default function CalenderView(p) {
         let row = Math.floor((y_window - y_target_offset) / cellHeight) + 1;
         let currentColumnID = parseInt(e.currentTarget.id)
         let currentId = e.target.id;
+        let currentUserID = localStorage.getItem("userid");
 
         if (e.button === 0) {
             if (!currentId.includes("e")) {
@@ -144,20 +188,16 @@ export default function CalenderView(p) {
                         pushEntry(currentColumnID, row)
                     }
                 } else {
-                    grabbedDown = currentId.includes("down")
-                    /*
-                    if(currentId.includes("up"))
-                    {
-                        grabbedDown = false;
-                    }else grabbedDown = true;
-
-                     */
                     let parentID = parseInt(e.target.parentElement.id.replace("e", ""));
+                    if(currentUserID == getElementInColumn(parentID, currentColumnID).usercreatedbyid) {
+                        grabbedDown = currentId.includes("down")
                         selectedElement = getElementInColumn(parentID, currentColumnID);
                     }
                 }
+            }
         } else if (e.button === 2) {
-            if (currentId.includes("e")) {
+            let parentID = parseInt(e.target.id.replace("e", ""));
+            if (currentUserID == getElementInColumn(parentID, currentColumnID).usercreatedbyid && currentId.includes("e")) {
                 let id = parseInt(currentId.replace("e", ""))
                 deleteEntry(id)
             }
@@ -174,6 +214,31 @@ export default function CalenderView(p) {
         readEntries()
     }
 
+    function getEntryColor(userCreatedByID)
+    {
+        let id = localStorage.getItem("userid");
+        if(id == userCreatedByID)
+        {
+            return "#77932b";
+        }
+        else
+        {
+            return "#a2a2a2";
+        }
+    }
+
+    function getResizeBarColor(userCreatedByID)
+    {
+        let id = localStorage.getItem("userid");
+        if(id == userCreatedByID)
+        {
+            return "#5a6c20";
+        }
+        else{
+            return "#a2a2a2";
+        }
+    }
+
     useEffect(() => {
         semesterStart = 0;
         currentWeekStartDay = 0;
@@ -194,19 +259,17 @@ export default function CalenderView(p) {
         window.addEventListener("contextmenu", (e) => (e.preventDefault()))
 
         window.addEventListener("keypress", (e) => {
-            if(e.key === "+")
-            {
-                scrollRef.current.scrollTop = scrollRef.current.scrollTop + 100;
+            try {
+                if (e.key === "+") {
                     cellHeight += 2
-            }
-            else if(e.key === "-")
-            {
-                if(cellHeight - 2 >= 8)
-                {
-                    scrollRef.current.scrollTop = scrollRef.current.scrollTop - 100;
+                } else if (e.key === "-") {
+                    if (cellHeight - 2 >= 8) {
                         cellHeight -= 2
                     }
                 }
+            } catch (e) {
+
+            }
         })
 
 
@@ -214,7 +277,7 @@ export default function CalenderView(p) {
             if (selectedElement == null) {
                 readEntries()
             }
-        }, 100);
+        }, 500);
     }, [])
 
 
@@ -252,18 +315,29 @@ export default function CalenderView(p) {
                 justifyContent: "center",
                 alignItems: "center",
                 backgroundColor: "white",
-                gap: 5
+                gap: 5,
             }}>
-
                 <div style={{borderRadius: 10, padding: 10, backgroundColor: "#f1f1f1"}} className={"box-shadow"}>
                     <div>
                         <div className={"wochen-tag-container"}>
-                            <div className={"wochen-tag font-big"}>Montag {new Date(currentYear, 0, currentWeekStartDay).getDate()}.</div>
-                            <div className={"wochen-tag font-big"}>Dienstag {new Date(currentYear, 0, currentWeekStartDay + 1).getDate()}.</div>
-                            <div className={"wochen-tag font-big"}>Mittwoch {new Date(currentYear, 0, currentWeekStartDay + 2).getDate()}.</div>
-                            <div className={"wochen-tag font-big"}>Donnerstag {new Date(currentYear, 0, currentWeekStartDay + 3).getDate()}.</div>
-                            <div className={"wochen-tag font-big"}>Freitag {new Date(currentYear, 0, currentWeekStartDay + 4).getDate()}.</div>
-                            <div className={"wochen-tag font-big"}>Samstag {new Date(currentYear, 0, currentWeekStartDay + 5).getDate()}.</div>
+                            <div
+                                className={"wochen-tag font-big"}>Montag {new Date(currentYear, 0, currentWeekStartDay).getDate()}.
+                            </div>
+                            <div
+                                className={"wochen-tag font-big"}>Dienstag {new Date(currentYear, 0, currentWeekStartDay + 1).getDate()}.
+                            </div>
+                            <div
+                                className={"wochen-tag font-big"}>Mittwoch {new Date(currentYear, 0, currentWeekStartDay + 2).getDate()}.
+                            </div>
+                            <div
+                                className={"wochen-tag font-big"}>Donnerstag {new Date(currentYear, 0, currentWeekStartDay + 3).getDate()}.
+                            </div>
+                            <div
+                                className={"wochen-tag font-big"}>Freitag {new Date(currentYear, 0, currentWeekStartDay + 4).getDate()}.
+                            </div>
+                            <div
+                                className={"wochen-tag font-big"}>Samstag {new Date(currentYear, 0, currentWeekStartDay + 5).getDate()}.
+                            </div>
                         </div>
                     </div>
                     <div className={"calender-container"} ref={scrollRef}>
@@ -281,14 +355,18 @@ export default function CalenderView(p) {
                                     width: "100%",
                                     gridRowStart: d.timestart,
                                     gridRowEnd: d.timeend,
-                                    backgroundColor: "#77932b"
+                                    backgroundColor: getEntryColor(d.usercreatedbyid)
                                 }} id={d.id + "e"}>
-                                    <div className={"resize-grab"} id={"grabup"}></div>
+                                    <div className={"resize-grab"} id={"grabup"} style={{
+                                        backgroundColor: getResizeBarColor(d.usercreatedbyid)
+                                    }}></div>
                                     <div style={{maxHeight: "60%"}} className={"no-pointer-events"}>
                                         <p>{internal_to_time(d.timestart) + " - " + internal_to_time(d.timeend)}</p>
                                         <p>Modul</p>
                                     </div>
-                                    <div className={"resize-grab"} id={"grabdown"}></div>
+                                    <div className={"resize-grab"} id={"grabdown"} style={{
+                                        backgroundColor: getResizeBarColor(d.usercreatedbyid)
+                                    }}></div>
                                 </div>))}
                             </div>
 
@@ -303,15 +381,19 @@ export default function CalenderView(p) {
                                     width: "100%",
                                     gridRowStart: d.timestart,
                                     gridRowEnd: d.timeend,
-                                    backgroundColor: "#77932b"
+                                    backgroundColor: getEntryColor(d.usercreatedbyid)
                                 }} id={d.id + "e"}>
 
-                                    <div className={"resize-grab"} id={"grabup"}></div>
+                                    <div className={"resize-grab"} id={"grabup"} style={{
+                                        backgroundColor: getResizeBarColor(d.usercreatedbyid)
+                                    }}></div>
                                     <div style={{maxHeight: "60%"}} className={"no-pointer-events"}>
                                         <p>{internal_to_time(d.timestart) + " - " + internal_to_time(d.timeend)}</p>
                                         <p>Modul</p>
                                     </div>
-                                    <div className={"resize-grab"} id={"grabdown"}></div>
+                                    <div className={"resize-grab"} id={"grabdown"} style={{
+                                        backgroundColor: getResizeBarColor(d.usercreatedbyid)
+                                    }}></div>
                                 </div>))}
                             </div>
 
@@ -327,15 +409,19 @@ export default function CalenderView(p) {
                                     width: "100%",
                                     gridRowStart: d.timestart,
                                     gridRowEnd: d.timeend,
-                                    backgroundColor: "#77932b"
+                                    backgroundColor: getEntryColor(d.usercreatedbyid)
                                 }} id={d.id + "e"}>
 
-                                    <div className={"resize-grab"} id={"grabup"}></div>
+                                    <div className={"resize-grab"} id={"grabup"} style={{
+                                        backgroundColor: getResizeBarColor(d.usercreatedbyid)
+                                    }}></div>
                                     <div style={{maxHeight: "60%"}} className={"no-pointer-events"}>
                                         <p>{internal_to_time(d.timestart) + " - " + internal_to_time(d.timeend)}</p>
                                         <p>Modul</p>
                                     </div>
-                                    <div className={"resize-grab"} id={"grabdown"}></div>
+                                    <div className={"resize-grab"} id={"grabdown"} style={{
+                                        backgroundColor: getResizeBarColor(d.usercreatedbyid)
+                                    }}></div>
                                 </div>))}
                             </div>
 
@@ -350,15 +436,19 @@ export default function CalenderView(p) {
                                     width: "100%",
                                     gridRowStart: d.timestart,
                                     gridRowEnd: d.timeend,
-                                    backgroundColor: "#77932b"
+                                    backgroundColor: getEntryColor(d.usercreatedbyid)
                                 }} id={d.id + "e"}>
 
-                                    <div className={"resize-grab"} id={"grabup"}></div>
+                                    <div className={"resize-grab"} id={"grabup"} style={{
+                                        backgroundColor: getResizeBarColor(d.usercreatedbyid)
+                                    }}></div>
                                     <div style={{maxHeight: "60%"}} className={"no-pointer-events"}>
                                         <p>{internal_to_time(d.timestart) + " - " + internal_to_time(d.timeend)}</p>
                                         <p>Moduel etc.</p>
                                     </div>
-                                    <div className={"resize-grab"} id={"grabdown"}></div>
+                                    <div className={"resize-grab"} id={"grabdown"} style={{
+                                        backgroundColor: getResizeBarColor(d.usercreatedbyid)
+                                    }}></div>
                                 </div>))}
                             </div>
 
@@ -374,14 +464,18 @@ export default function CalenderView(p) {
                                     width: "100%",
                                     gridRowStart: d.timestart,
                                     gridRowEnd: d.timeend,
-                                    backgroundColor: "#77932b"
+                                    backgroundColor: getEntryColor(d.usercreatedbyid)
                                 }} id={d.id + "e"}>
-                                    <div className={"resize-grab"} id={"grabup"}></div>
+                                    <div className={"resize-grab"} id={"grabup"} style={{
+                                        backgroundColor: getResizeBarColor(d.usercreatedbyid)
+                                    }}></div>
                                     <div style={{maxHeight: "60%"}} className={"no-pointer-events"}>
                                         <p>{internal_to_time(d.timestart) + " - " + internal_to_time(d.timeend)}</p>
                                         <p>Modul</p>
                                     </div>
-                                    <div className={"resize-grab"} id={"grabdown"}></div>
+                                    <div className={"resize-grab"} id={"grabdown"} style={{
+                                        backgroundColor: getResizeBarColor(d.usercreatedbyid)
+                                    }}></div>
                                 </div>))}
                             </div>
 
@@ -397,14 +491,18 @@ export default function CalenderView(p) {
                                     width: "100%",
                                     gridRowStart: d.timestart,
                                     gridRowEnd: d.timeend,
-                                    backgroundColor: "#77932b"
+                                    backgroundColor: getEntryColor(d.usercreatedbyid)
                                 }} id={d.id + "e"}>
-                                    <div className={"resize-grab"} id={"grabup"}></div>
+                                    <div className={"resize-grab"} id={"grabup"} style={{
+                                        backgroundColor: getResizeBarColor(d.usercreatedbyid)
+                                    }}></div>
                                     <div style={{maxHeight: "60%"}} className={"no-pointer-events"}>
                                         <p>{internal_to_time(d.timestart) + " - " + internal_to_time(d.timeend)}</p>
                                         <p>Modul</p>
                                     </div>
-                                    <div className={"resize-grab"} id={"grabdown"}></div>
+                                    <div className={"resize-grab"} id={"grabdown"} style={{
+                                        backgroundColor: getResizeBarColor(d.usercreatedbyid)
+                                    }}></div>
                                 </div>))}
                             </div>
                         </div>

anwendung/src/styles/globals.css

@@ -338,7 +338,6 @@ Calender View
     height: 6px;
     cursor: ns-resize;
     width: 100%;
-    background-color: #5a6c20;
 }
 
 

backend/.gitignore

@@ -1,33 +0,0 @@
-HELP.md
-target/
-!.mvn/wrapper/maven-wrapper.jar
-!**/src/main/**/target/
-!**/src/test/**/target/
-
-### STS ###
-.apt_generated
-.classpath
-.factorypath
-.project
-.settings
-.springBeans
-.sts4-cache
-
-### IntelliJ IDEA ###
-.idea
-*.iws
-*.iml
-*.ipr
-
-### NetBeans ###
-/nbproject/private/
-/nbbuild/
-/dist/
-/nbdist/
-/.nb-gradle/
-build/
-!**/src/main/**/build/
-!**/src/test/**/build/
-
-### VS Code ###
-.vscode/

backend/.mvn/wrapper/maven-wrapper.properties

@@ -1,18 +0,0 @@
-# Licensed to the Apache Software Foundation (ASF) under one
-# or more contributor license agreements.  See the NOTICE file
-# distributed with this work for additional information
-# regarding copyright ownership.  The ASF licenses this file
-# to you under the Apache License, Version 2.0 (the
-# "License"); you may not use this file except in compliance
-# with the License.  You may obtain a copy of the License at
-#
-#   https://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing,
-# software distributed under the License is distributed on an
-# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
-# KIND, either express or implied.  See the License for the
-# specific language governing permissions and limitations
-# under the License.
-distributionUrl=https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.8.7/apache-maven-3.8.7-bin.zip
-wrapperUrl=https://repo.maven.apache.org/maven2/org/apache/maven/wrapper/maven-wrapper/3.1.1/maven-wrapper-3.1.1.jar

backend/mvnw

@@ -1,316 +0,0 @@
-#!/bin/sh
-# ----------------------------------------------------------------------------
-# Licensed to the Apache Software Foundation (ASF) under one
-# or more contributor license agreements.  See the NOTICE file
-# distributed with this work for additional information
-# regarding copyright ownership.  The ASF licenses this file
-# to you under the Apache License, Version 2.0 (the
-# "License"); you may not use this file except in compliance
-# with the License.  You may obtain a copy of the License at
-#
-#    https://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing,
-# software distributed under the License is distributed on an
-# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
-# KIND, either express or implied.  See the License for the
-# specific language governing permissions and limitations
-# under the License.
-# ----------------------------------------------------------------------------
-
-# ----------------------------------------------------------------------------
-# Maven Start Up Batch script
-#
-# Required ENV vars:
-# ------------------
-#   JAVA_HOME - location of a JDK home dir
-#
-# Optional ENV vars
-# -----------------
-#   M2_HOME - location of maven2's installed home dir
-#   MAVEN_OPTS - parameters passed to the Java VM when running Maven
-#     e.g. to debug Maven itself, use
-#       set MAVEN_OPTS=-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8000
-#   MAVEN_SKIP_RC - flag to disable loading of mavenrc files
-# ----------------------------------------------------------------------------
-
-if [ -z "$MAVEN_SKIP_RC" ] ; then
-
-  if [ -f /usr/local/etc/mavenrc ] ; then
-    . /usr/local/etc/mavenrc
-  fi
-
-  if [ -f /etc/mavenrc ] ; then
-    . /etc/mavenrc
-  fi
-
-  if [ -f "$HOME/.mavenrc" ] ; then
-    . "$HOME/.mavenrc"
-  fi
-
-fi
-
-# OS specific support.  $var _must_ be set to either true or false.
-cygwin=false;
-darwin=false;
-mingw=false
-case "`uname`" in
-  CYGWIN*) cygwin=true ;;
-  MINGW*) mingw=true;;
-  Darwin*) darwin=true
-    # Use /usr/libexec/java_home if available, otherwise fall back to /Library/Java/Home
-    # See https://developer.apple.com/library/mac/qa/qa1170/_index.html
-    if [ -z "$JAVA_HOME" ]; then
-      if [ -x "/usr/libexec/java_home" ]; then
-        export JAVA_HOME="`/usr/libexec/java_home`"
-      else
-        export JAVA_HOME="/Library/Java/Home"
-      fi
-    fi
-    ;;
-esac
-
-if [ -z "$JAVA_HOME" ] ; then
-  if [ -r /etc/gentoo-release ] ; then
-    JAVA_HOME=`java-config --jre-home`
-  fi
-fi
-
-if [ -z "$M2_HOME" ] ; then
-  ## resolve links - $0 may be a link to maven's home
-  PRG="$0"
-
-  # need this for relative symlinks
-  while [ -h "$PRG" ] ; do
-    ls=`ls -ld "$PRG"`
-    link=`expr "$ls" : '.*-> \(.*\)$'`
-    if expr "$link" : '/.*' > /dev/null; then
-      PRG="$link"
-    else
-      PRG="`dirname "$PRG"`/$link"
-    fi
-  done
-
-  saveddir=`pwd`
-
-  M2_HOME=`dirname "$PRG"`/..
-
-  # make it fully qualified
-  M2_HOME=`cd "$M2_HOME" && pwd`
-
-  cd "$saveddir"
-  # echo Using m2 at $M2_HOME
-fi
-
-# For Cygwin, ensure paths are in UNIX format before anything is touched
-if $cygwin ; then
-  [ -n "$M2_HOME" ] &&
-    M2_HOME=`cygpath --unix "$M2_HOME"`
-  [ -n "$JAVA_HOME" ] &&
-    JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
-  [ -n "$CLASSPATH" ] &&
-    CLASSPATH=`cygpath --path --unix "$CLASSPATH"`
-fi
-
-# For Mingw, ensure paths are in UNIX format before anything is touched
-if $mingw ; then
-  [ -n "$M2_HOME" ] &&
-    M2_HOME="`(cd "$M2_HOME"; pwd)`"
-  [ -n "$JAVA_HOME" ] &&
-    JAVA_HOME="`(cd "$JAVA_HOME"; pwd)`"
-fi
-
-if [ -z "$JAVA_HOME" ]; then
-  javaExecutable="`which javac`"
-  if [ -n "$javaExecutable" ] && ! [ "`expr \"$javaExecutable\" : '\([^ ]*\)'`" = "no" ]; then
-    # readlink(1) is not available as standard on Solaris 10.
-    readLink=`which readlink`
-    if [ ! `expr "$readLink" : '\([^ ]*\)'` = "no" ]; then
-      if $darwin ; then
-        javaHome="`dirname \"$javaExecutable\"`"
-        javaExecutable="`cd \"$javaHome\" && pwd -P`/javac"
-      else
-        javaExecutable="`readlink -f \"$javaExecutable\"`"
-      fi
-      javaHome="`dirname \"$javaExecutable\"`"
-      javaHome=`expr "$javaHome" : '\(.*\)/bin'`
-      JAVA_HOME="$javaHome"
-      export JAVA_HOME
-    fi
-  fi
-fi
-
-if [ -z "$JAVACMD" ] ; then
-  if [ -n "$JAVA_HOME"  ] ; then
-    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
-      # IBM's JDK on AIX uses strange locations for the executables
-      JAVACMD="$JAVA_HOME/jre/sh/java"
-    else
-      JAVACMD="$JAVA_HOME/bin/java"
-    fi
-  else
-    JAVACMD="`\\unset -f command; \\command -v java`"
-  fi
-fi
-
-if [ ! -x "$JAVACMD" ] ; then
-  echo "Error: JAVA_HOME is not defined correctly." >&2
-  echo "  We cannot execute $JAVACMD" >&2
-  exit 1
-fi
-
-if [ -z "$JAVA_HOME" ] ; then
-  echo "Warning: JAVA_HOME environment variable is not set."
-fi
-
-CLASSWORLDS_LAUNCHER=org.codehaus.plexus.classworlds.launcher.Launcher
-
-# traverses directory structure from process work directory to filesystem root
-# first directory with .mvn subdirectory is considered project base directory
-find_maven_basedir() {
-
-  if [ -z "$1" ]
-  then
-    echo "Path not specified to find_maven_basedir"
-    return 1
-  fi
-
-  basedir="$1"
-  wdir="$1"
-  while [ "$wdir" != '/' ] ; do
-    if [ -d "$wdir"/.mvn ] ; then
-      basedir=$wdir
-      break
-    fi
-    # workaround for JBEAP-8937 (on Solaris 10/Sparc)
-    if [ -d "${wdir}" ]; then
-      wdir=`cd "$wdir/.."; pwd`
-    fi
-    # end of workaround
-  done
-  echo "${basedir}"
-}
-
-# concatenates all lines of a file
-concat_lines() {
-  if [ -f "$1" ]; then
-    echo "$(tr -s '\n' ' ' < "$1")"
-  fi
-}
-
-BASE_DIR=`find_maven_basedir "$(pwd)"`
-if [ -z "$BASE_DIR" ]; then
-  exit 1;
-fi
-
-##########################################################################################
-# Extension to allow automatically downloading the maven-wrapper.jar from Maven-central
-# This allows using the maven wrapper in projects that prohibit checking in binary data.
-##########################################################################################
-if [ -r "$BASE_DIR/.mvn/wrapper/maven-wrapper.jar" ]; then
-    if [ "$MVNW_VERBOSE" = true ]; then
-      echo "Found .mvn/wrapper/maven-wrapper.jar"
-    fi
-else
-    if [ "$MVNW_VERBOSE" = true ]; then
-      echo "Couldn't find .mvn/wrapper/maven-wrapper.jar, downloading it ..."
-    fi
-    if [ -n "$MVNW_REPOURL" ]; then
-      jarUrl="$MVNW_REPOURL/org/apache/maven/wrapper/maven-wrapper/3.1.0/maven-wrapper-3.1.0.jar"
-    else
-      jarUrl="https://repo.maven.apache.org/maven2/org/apache/maven/wrapper/maven-wrapper/3.1.0/maven-wrapper-3.1.0.jar"
-    fi
-    while IFS="=" read key value; do
-      case "$key" in (wrapperUrl) jarUrl="$value"; break ;;
-      esac
-    done < "$BASE_DIR/.mvn/wrapper/maven-wrapper.properties"
-    if [ "$MVNW_VERBOSE" = true ]; then
-      echo "Downloading from: $jarUrl"
-    fi
-    wrapperJarPath="$BASE_DIR/.mvn/wrapper/maven-wrapper.jar"
-    if $cygwin; then
-      wrapperJarPath=`cygpath --path --windows "$wrapperJarPath"`
-    fi
-
-    if command -v wget > /dev/null; then
-        if [ "$MVNW_VERBOSE" = true ]; then
-          echo "Found wget ... using wget"
-        fi
-        if [ -z "$MVNW_USERNAME" ] || [ -z "$MVNW_PASSWORD" ]; then
-            wget "$jarUrl" -O "$wrapperJarPath" || rm -f "$wrapperJarPath"
-        else
-            wget --http-user=$MVNW_USERNAME --http-password=$MVNW_PASSWORD "$jarUrl" -O "$wrapperJarPath" || rm -f "$wrapperJarPath"
-        fi
-    elif command -v curl > /dev/null; then
-        if [ "$MVNW_VERBOSE" = true ]; then
-          echo "Found curl ... using curl"
-        fi
-        if [ -z "$MVNW_USERNAME" ] || [ -z "$MVNW_PASSWORD" ]; then
-            curl -o "$wrapperJarPath" "$jarUrl" -f
-        else
-            curl --user $MVNW_USERNAME:$MVNW_PASSWORD -o "$wrapperJarPath" "$jarUrl" -f
-        fi
-
-    else
-        if [ "$MVNW_VERBOSE" = true ]; then
-          echo "Falling back to using Java to download"
-        fi
-        javaClass="$BASE_DIR/.mvn/wrapper/MavenWrapperDownloader.java"
-        # For Cygwin, switch paths to Windows format before running javac
-        if $cygwin; then
-          javaClass=`cygpath --path --windows "$javaClass"`
-        fi
-        if [ -e "$javaClass" ]; then
-            if [ ! -e "$BASE_DIR/.mvn/wrapper/MavenWrapperDownloader.class" ]; then
-                if [ "$MVNW_VERBOSE" = true ]; then
-                  echo " - Compiling MavenWrapperDownloader.java ..."
-                fi
-                # Compiling the Java class
-                ("$JAVA_HOME/bin/javac" "$javaClass")
-            fi
-            if [ -e "$BASE_DIR/.mvn/wrapper/MavenWrapperDownloader.class" ]; then
-                # Running the downloader
-                if [ "$MVNW_VERBOSE" = true ]; then
-                  echo " - Running MavenWrapperDownloader.java ..."
-                fi
-                ("$JAVA_HOME/bin/java" -cp .mvn/wrapper MavenWrapperDownloader "$MAVEN_PROJECTBASEDIR")
-            fi
-        fi
-    fi
-fi
-##########################################################################################
-# End of extension
-##########################################################################################
-
-export MAVEN_PROJECTBASEDIR=${MAVEN_BASEDIR:-"$BASE_DIR"}
-if [ "$MVNW_VERBOSE" = true ]; then
-  echo $MAVEN_PROJECTBASEDIR
-fi
-MAVEN_OPTS="$(concat_lines "$MAVEN_PROJECTBASEDIR/.mvn/jvm.config") $MAVEN_OPTS"
-
-# For Cygwin, switch paths to Windows format before running java
-if $cygwin; then
-  [ -n "$M2_HOME" ] &&
-    M2_HOME=`cygpath --path --windows "$M2_HOME"`
-  [ -n "$JAVA_HOME" ] &&
-    JAVA_HOME=`cygpath --path --windows "$JAVA_HOME"`
-  [ -n "$CLASSPATH" ] &&
-    CLASSPATH=`cygpath --path --windows "$CLASSPATH"`
-  [ -n "$MAVEN_PROJECTBASEDIR" ] &&
-    MAVEN_PROJECTBASEDIR=`cygpath --path --windows "$MAVEN_PROJECTBASEDIR"`
-fi
-
-# Provide a "standardized" way to retrieve the CLI args that will
-# work with both Windows and non-Windows executions.
-MAVEN_CMD_LINE_ARGS="$MAVEN_CONFIG $@"
-export MAVEN_CMD_LINE_ARGS
-
-WRAPPER_LAUNCHER=org.apache.maven.wrapper.MavenWrapperMain
-
-exec "$JAVACMD" \
-  $MAVEN_OPTS \
-  $MAVEN_DEBUG_OPTS \
-  -classpath "$MAVEN_PROJECTBASEDIR/.mvn/wrapper/maven-wrapper.jar" \
-  "-Dmaven.home=${M2_HOME}" \
-  "-Dmaven.multiModuleProjectDirectory=${MAVEN_PROJECTBASEDIR}" \
-  ${WRAPPER_LAUNCHER} $MAVEN_CONFIG "$@"

backend/mvnw.cmd

@@ -1,188 +0,0 @@
-@REM ----------------------------------------------------------------------------
-@REM Licensed to the Apache Software Foundation (ASF) under one
-@REM or more contributor license agreements.  See the NOTICE file
-@REM distributed with this work for additional information
-@REM regarding copyright ownership.  The ASF licenses this file
-@REM to you under the Apache License, Version 2.0 (the
-@REM "License"); you may not use this file except in compliance
-@REM with the License.  You may obtain a copy of the License at
-@REM
-@REM    https://www.apache.org/licenses/LICENSE-2.0
-@REM
-@REM Unless required by applicable law or agreed to in writing,
-@REM software distributed under the License is distributed on an
-@REM "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
-@REM KIND, either express or implied.  See the License for the
-@REM specific language governing permissions and limitations
-@REM under the License.
-@REM ----------------------------------------------------------------------------
-
-@REM ----------------------------------------------------------------------------
-@REM Maven Start Up Batch script
-@REM
-@REM Required ENV vars:
-@REM JAVA_HOME - location of a JDK home dir
-@REM
-@REM Optional ENV vars
-@REM M2_HOME - location of maven2's installed home dir
-@REM MAVEN_BATCH_ECHO - set to 'on' to enable the echoing of the batch commands
-@REM MAVEN_BATCH_PAUSE - set to 'on' to wait for a keystroke before ending
-@REM MAVEN_OPTS - parameters passed to the Java VM when running Maven
-@REM     e.g. to debug Maven itself, use
-@REM set MAVEN_OPTS=-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8000
-@REM MAVEN_SKIP_RC - flag to disable loading of mavenrc files
-@REM ----------------------------------------------------------------------------
-
-@REM Begin all REM lines with '@' in case MAVEN_BATCH_ECHO is 'on'
-@echo off
-@REM set title of command window
-title %0
-@REM enable echoing by setting MAVEN_BATCH_ECHO to 'on'
-@if "%MAVEN_BATCH_ECHO%" == "on"  echo %MAVEN_BATCH_ECHO%
-
-@REM set %HOME% to equivalent of $HOME
-if "%HOME%" == "" (set "HOME=%HOMEDRIVE%%HOMEPATH%")
-
-@REM Execute a user defined script before this one
-if not "%MAVEN_SKIP_RC%" == "" goto skipRcPre
-@REM check for pre script, once with legacy .bat ending and once with .cmd ending
-if exist "%USERPROFILE%\mavenrc_pre.bat" call "%USERPROFILE%\mavenrc_pre.bat" %*
-if exist "%USERPROFILE%\mavenrc_pre.cmd" call "%USERPROFILE%\mavenrc_pre.cmd" %*
-:skipRcPre
-
-@setlocal
-
-set ERROR_CODE=0
-
-@REM To isolate internal variables from possible post scripts, we use another setlocal
-@setlocal
-
-@REM ==== START VALIDATION ====
-if not "%JAVA_HOME%" == "" goto OkJHome
-
-echo.
-echo Error: JAVA_HOME not found in your environment. >&2
-echo Please set the JAVA_HOME variable in your environment to match the >&2
-echo location of your Java installation. >&2
-echo.
-goto error
-
-:OkJHome
-if exist "%JAVA_HOME%\bin\java.exe" goto init
-
-echo.
-echo Error: JAVA_HOME is set to an invalid directory. >&2
-echo JAVA_HOME = "%JAVA_HOME%" >&2
-echo Please set the JAVA_HOME variable in your environment to match the >&2
-echo location of your Java installation. >&2
-echo.
-goto error
-
-@REM ==== END VALIDATION ====
-
-:init
-
-@REM Find the project base dir, i.e. the directory that contains the folder ".mvn".
-@REM Fallback to current working directory if not found.
-
-set MAVEN_PROJECTBASEDIR=%MAVEN_BASEDIR%
-IF NOT "%MAVEN_PROJECTBASEDIR%"=="" goto endDetectBaseDir
-
-set EXEC_DIR=%CD%
-set WDIR=%EXEC_DIR%
-:findBaseDir
-IF EXIST "%WDIR%"\.mvn goto baseDirFound
-cd ..
-IF "%WDIR%"=="%CD%" goto baseDirNotFound
-set WDIR=%CD%
-goto findBaseDir
-
-:baseDirFound
-set MAVEN_PROJECTBASEDIR=%WDIR%
-cd "%EXEC_DIR%"
-goto endDetectBaseDir
-
-:baseDirNotFound
-set MAVEN_PROJECTBASEDIR=%EXEC_DIR%
-cd "%EXEC_DIR%"
-
-:endDetectBaseDir
-
-IF NOT EXIST "%MAVEN_PROJECTBASEDIR%\.mvn\jvm.config" goto endReadAdditionalConfig
-
-@setlocal EnableExtensions EnableDelayedExpansion
-for /F "usebackq delims=" %%a in ("%MAVEN_PROJECTBASEDIR%\.mvn\jvm.config") do set JVM_CONFIG_MAVEN_PROPS=!JVM_CONFIG_MAVEN_PROPS! %%a
-@endlocal & set JVM_CONFIG_MAVEN_PROPS=%JVM_CONFIG_MAVEN_PROPS%
-
-:endReadAdditionalConfig
-
-SET MAVEN_JAVA_EXE="%JAVA_HOME%\bin\java.exe"
-set WRAPPER_JAR="%MAVEN_PROJECTBASEDIR%\.mvn\wrapper\maven-wrapper.jar"
-set WRAPPER_LAUNCHER=org.apache.maven.wrapper.MavenWrapperMain
-
-set DOWNLOAD_URL="https://repo.maven.apache.org/maven2/org/apache/maven/wrapper/maven-wrapper/3.1.0/maven-wrapper-3.1.0.jar"
-
-FOR /F "usebackq tokens=1,2 delims==" %%A IN ("%MAVEN_PROJECTBASEDIR%\.mvn\wrapper\maven-wrapper.properties") DO (
-    IF "%%A"=="wrapperUrl" SET DOWNLOAD_URL=%%B
-)
-
-@REM Extension to allow automatically downloading the maven-wrapper.jar from Maven-central
-@REM This allows using the maven wrapper in projects that prohibit checking in binary data.
-if exist %WRAPPER_JAR% (
-    if "%MVNW_VERBOSE%" == "true" (
-        echo Found %WRAPPER_JAR%
-    )
-) else (
-    if not "%MVNW_REPOURL%" == "" (
-        SET DOWNLOAD_URL="%MVNW_REPOURL%/org/apache/maven/wrapper/maven-wrapper/3.1.0/maven-wrapper-3.1.0.jar"
-    )
-    if "%MVNW_VERBOSE%" == "true" (
-        echo Couldn't find %WRAPPER_JAR%, downloading it ...
-        echo Downloading from: %DOWNLOAD_URL%
-    )
-
-    powershell -Command "&{"^
-		"$webclient = new-object System.Net.WebClient;"^
-		"if (-not ([string]::IsNullOrEmpty('%MVNW_USERNAME%') -and [string]::IsNullOrEmpty('%MVNW_PASSWORD%'))) {"^
-		"$webclient.Credentials = new-object System.Net.NetworkCredential('%MVNW_USERNAME%', '%MVNW_PASSWORD%');"^
-		"}"^
-		"[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12; $webclient.DownloadFile('%DOWNLOAD_URL%', '%WRAPPER_JAR%')"^
-		"}"
-    if "%MVNW_VERBOSE%" == "true" (
-        echo Finished downloading %WRAPPER_JAR%
-    )
-)
-@REM End of extension
-
-@REM Provide a "standardized" way to retrieve the CLI args that will
-@REM work with both Windows and non-Windows executions.
-set MAVEN_CMD_LINE_ARGS=%*
-
-%MAVEN_JAVA_EXE% ^
-  %JVM_CONFIG_MAVEN_PROPS% ^
-  %MAVEN_OPTS% ^
-  %MAVEN_DEBUG_OPTS% ^
-  -classpath %WRAPPER_JAR% ^
-  "-Dmaven.multiModuleProjectDirectory=%MAVEN_PROJECTBASEDIR%" ^
-  %WRAPPER_LAUNCHER% %MAVEN_CONFIG% %*
-if ERRORLEVEL 1 goto error
-goto end
-
-:error
-set ERROR_CODE=1
-
-:end
-@endlocal & set ERROR_CODE=%ERROR_CODE%
-
-if not "%MAVEN_SKIP_RC%"=="" goto skipRcPost
-@REM check for post script, once with legacy .bat ending and once with .cmd ending
-if exist "%USERPROFILE%\mavenrc_post.bat" call "%USERPROFILE%\mavenrc_post.bat"
-if exist "%USERPROFILE%\mavenrc_post.cmd" call "%USERPROFILE%\mavenrc_post.cmd"
-:skipRcPost
-
-@REM pause the script if MAVEN_BATCH_PAUSE is set to 'on'
-if "%MAVEN_BATCH_PAUSE%"=="on" pause
-
-if "%MAVEN_TERMINATE_CMD%"=="on" exit %ERROR_CODE%
-
-cmd /C exit /B %ERROR_CODE%

backend/pom.xml

@@ -1,68 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
-    <modelVersion>4.0.0</modelVersion>
-    <parent>
-        <groupId>org.springframework.boot</groupId>
-        <artifactId>spring-boot-starter-parent</artifactId>
-        <version>3.0.6</version>
-        <relativePath/> <!-- lookup parent from repository -->
-    </parent>
-    <groupId>com.example</groupId>
-    <artifactId>backend</artifactId>
-    <version>0.0.1-SNAPSHOT</version>
-    <name>backend</name>
-    <description>backend</description>
-    <properties>
-        <java.version>17</java.version>
-    </properties>
-    <dependencies>
-        <dependency>
-            <groupId>org.springframework.boot</groupId>
-            <artifactId>spring-boot-starter-web</artifactId>
-        </dependency>
-
-        <dependency>
-            <groupId>org.springframework.boot</groupId>
-            <artifactId>spring-boot-starter-test</artifactId>
-            <scope>test</scope>
-        </dependency>
-
-        <dependency>
-            <groupId>com.h2database</groupId>
-            <artifactId>h2</artifactId>
-            <version>2.1.214</version>
-        </dependency>
-    </dependencies>
-
-    <build>
-        <plugins>
-            <plugin>
-                <groupId>org.springframework.boot</groupId>
-                <artifactId>spring-boot-maven-plugin</artifactId>
-            </plugin>
-            <plugin>
-                <groupId>org.apache.maven.plugins</groupId>
-                <artifactId>maven-install-plugin</artifactId>
-                <version>2.5.2</version>
-                <executions>
-                    <execution>
-                        <phase>validate</phase>
-                        <goals>
-                            <goal>install-file</goal>
-                        </goals>
-                        <configuration>
-                            <groupId>com.example</groupId>
-                            <artifactId>example</artifactId>
-                            <version>1.0</version>
-                            <packaging>jar</packaging>
-                            <file>${basedir}/H2JDBCDriver/h2-2.1.214.jar</file>
-                            <generatePom>true</generatePom>
-                        </configuration>
-                    </execution>
-                </executions>
-            </plugin>
-        </plugins>
-    </build>
-
-</project>

backend/src/main/java/com/example/backend/BackendApplication.java

@@ -1,15 +0,0 @@
-package com.example.backend;
-
-import org.springframework.boot.SpringApplication;
-import org.springframework.boot.autoconfigure.SpringBootApplication;
-
-@SpringBootApplication
-public class BackendApplication
-{
-
-    public static void main(String[] args)
-    {
-        SpringApplication.run(BackendApplication.class, args);
-    }
-
-}

backend/src/main/java/com/example/backend/anwprj/Database/DataBaseHandler.java

@@ -1,598 +0,0 @@
-package com.example.backend.anwprj.Database;
-
-import com.example.backend.discard.Encryption.RSA;
-import com.example.backend.anwprj.Entries.Entry;
-import com.example.backend.anwprj.Semesters.Semester;
-import com.example.backend.anwprj.Users.User;
-import com.example.backend.anwprj.Module.Module;
-
-import java.sql.*;
-import java.util.ArrayList;
-import java.util.List;
-
-public class DataBaseHandler
-{
-    //singleton instance of database handler
-    private static DataBaseHandler instance = null;
-
-    public static DataBaseHandler getInstance()
-    {
-        if (instance == null)
-        {
-            instance = new DataBaseHandler();
-        }
-
-        return instance;
-    }
-
-    //connection to the database
-    private Connection connection;
-    //sql statement
-    private Statement st;
-    private boolean encrypted = false;
-
-    public DataBaseHandler()
-    {
-        try
-        {
-            //connect to the local database
-            connection = DriverManager.getConnection("jdbc:h2:./database", "adm", "73bgjfdsfJ!934");
-            st = connection.createStatement();
-        } catch (SQLException e)
-        {
-            e.printStackTrace();
-        }
-    }
-
-
-    /**
-     ENTRIES
-     */
-    public void addEntry(Entry entry)
-    {
-        try
-        {
-            st.executeUpdate("insert into entries (daynumber, yearnumber, semesterid, usercreatedbyid, timestart, timeend, info) values (" +
-                    entry.getDaynumber() + ", " + entry.getYearnumber() + ", " + entry.getSemesterid() + ", " +
-                    entry.getUsercreatedbyid() + ", " + entry.getTimestart() + ", " + entry.getTimeend() + ", '" + entry.getInfo() + "')"
-                    );
-        }
-        catch(Exception e)
-        {
-            e.printStackTrace();
-        }
-    }
-
-    public Entry[][] getEntries(int semesterid, int daynumber, int yearnumber)
-    {
-        try
-        {
-            ResultSet rs = st.executeQuery("select * from entries where " +
-                    "semesterid=" + semesterid +
-                    " and yearnumber=" + yearnumber +
-                    " and daynumber between " + daynumber + " and " + daynumber + 6);
-
-            List<Entry> entryList = new ArrayList<>();
-            Entry current = null;
-            while((current = resultSetToEntry(rs)) != null)
-            {
-                entryList.add(current);
-            }
-
-            Entry[][] entries = new Entry[6][20];
-            for(int i = 0; i < 6; i++)
-            {
-                int f = 0;
-
-                for(int j = 0; j < entryList.size(); j++)
-                {
-                    if(entryList.get(j).getDaynumber() == i + daynumber)
-                    {
-                        entries[i][f] = entryList.get(j);
-                        f++;
-                    }
-                }
-            }
-
-            return entries;
-        }
-        catch(Exception e)
-        {
-            return null;
-        }
-    }
-
-    public void deleteEntry(int id)
-    {
-        try
-        {
-            st.executeUpdate("delete from entries where id=" + id);
-        }
-        catch (Exception e)
-        {
-
-        }
-    }
-
-    public void updateEntry(Entry entry)
-    {
-        try
-        {
-            st.executeUpdate("update entries set timeend=" + entry.getTimeend() + ", timestart=" + entry.getTimestart() + " where id=" + entry.getId());
-        }
-        catch(Exception e)
-        {
-
-        }
-    }
-
-    public Entry resultSetToEntry(ResultSet rs)
-    {
-        try
-        {
-            rs.next();
-            return new Entry(
-                    rs.getInt("id"),
-                    rs.getInt("daynumber"),
-                    rs.getInt("yearnumber"),
-                    rs.getInt("usercreatedbyid"),
-                    rs.getInt("timestart"),
-                    rs.getInt("timeend"),
-                    rs.getInt("semesterid"),
-                    rs.getString("info")
-            );
-        }
-        catch(Exception e)
-        {
-            return null;
-        }
-    }
-
-
-    /**
-     SEMESTER
-     */
-    //get a semester object by its name
-    public Semester getSemester(String name)
-    {
-        try
-        {
-            ResultSet rs = st.executeQuery("select * from SEMESTER where name = '" + name + "'");
-            return resultSetToSemester(rs);
-        }
-        catch(Exception e)
-        {
-            return null;
-        }
-    }
-
-    public Semester getSemester(int id)
-    {
-        try
-        {
-            ResultSet rs = st.executeQuery("select * from semester where id=" + id);
-            return resultSetToSemester(rs);
-        }
-        catch(Exception e)
-        {
-            return null;
-        }
-    }
-
-    //write a new semester to the database returns if process was successful
-    public Semester addSemester(Semester s)
-    {
-        try
-        {
-            st.executeUpdate("insert into SEMESTER (startday, endday, name, startyear, endyear) values (" + s.getStartday() + ", " + s.getEndday() + ", '" + s.getName() + "', " + s.getStartyear() + ", " + s.getEndyear() + ")");
-            return getSemester(s.getName());
-
-        } catch (Exception e)
-        {
-            return null;
-        }
-    }
-
-    public Semester[] getAllSemesters()
-    {
-        try
-        {
-            ResultSet rs = st.executeQuery("select * from semester");
-            List<Semester> semestersList = new ArrayList<>();
-            Semester s = null;
-            while((s = resultSetToSemester(rs)) != null)
-            {
-                semestersList.add(s);
-            }
-
-            return semestersList.toArray(new Semester[0]);
-        }
-        catch(Exception e)
-        {
-            return null;
-        }
-    }
-
-    public Semester updateSemester(Semester semester)
-    {
-        try
-        {
-            st.executeUpdate("update semester set startday=" + semester.getStartday() + ", " +
-                    "endday=" + semester.getEndday() + ", " +
-                    "name='" + semester.getName() + "', " +
-                    "startyear=" + semester.getStartyear() + ", " +
-                    "endyear=" + semester.getEndyear() + " where id=" + semester.getId());
-
-            return getSemester(semester.getId());
-        } catch (SQLException e)
-        {
-            e.printStackTrace();
-            return null;
-        }
-    }
-
-    public void deleteSemester(int id)
-    {
-        try
-        {
-            st.executeUpdate("DELETE FROM modules WHERE semesterid=" + id);
-
-            st.executeUpdate("delete from semester where id=" + id);
-        }
-        catch(Exception e)
-        {
-
-        }
-    }
-
-    public Semester resultSetToSemester(ResultSet rs)
-    {
-        try
-        {
-            rs.next();
-            return new Semester(
-                    rs.getInt("id"),
-                    rs.getInt("startday"),
-                    rs.getInt("endday"),
-                    rs.getString("name"),
-                    rs.getInt("startyear"),
-                    rs.getInt("endyear")
-            );
-        }
-        catch(Exception e)
-        {
-            return null;
-        }
-    }
-
-    /**
-     MODULE
-     */
-
-    //get a module object by its id
-    public Module getModule(int id) {
-        try {
-            ResultSet rs = st.executeQuery("SELECT * FROM modules WHERE id=" + id);
-            return  resultSetToModule(rs);
-        }
-        catch (Exception ex) {
-            return null;
-        }
-    }
-
-    public Module getModule(int userid, int semesterid)
-    {
-        try
-        {
-            ResultSet rs = st.executeQuery("select * from modules where userid=" + userid + " and semesterid=" + semesterid);
-
-            return resultSetToModule(rs);
-        }
-        catch (Exception e)
-        {
-            return null;
-        }
-    }
-
-    //get module objects by its semester and its lecturer
-    public Module[] getModules(int userid) {
-        try {
-            ResultSet rs = st.executeQuery("SELECT * FROM modules WHERE userid = " + userid);
-            List<Module> moduleList = new ArrayList<>();
-            Module m = null;
-            while((m = resultSetToModule(rs)) != null)
-            {
-                moduleList.add(m);
-            }
-
-            return moduleList.toArray(new Module[0]);
-
-        }
-        catch (Exception ex){
-            return null;
-        }
-    }
-
-    public Module addModule(Module m)
-    {
-        try {
-            st.executeUpdate("insert into modules (userid, semesterid, name, activated) " +
-                    "Values (" + m.getUserid() + ", " + m.getsemesterid() + ", '" + m.getName() + "', " + m.getActivated() + ")");
-            return getModule(m.getUserid(), m.getsemesterid());
-
-        }
-        catch (Exception e) {
-            e.printStackTrace();
-            return null;
-        }
-    }
-
-    public Module[] getAllModules() {
-        try
-        {
-            ResultSet rs = st.executeQuery("SELECT * FROM modules");
-            List<Module> moduleList = new ArrayList<>();
-            Module m = null;
-            while((m = resultSetToModule(rs)) != null)
-            {
-                moduleList.add(m);
-            }
-
-            return moduleList.toArray(new Module[0]);
-        }
-        catch(Exception e)
-        {
-            return null;
-        }
-    }
-
-    public Module getModuleBySemesterUserID(int userid, int semesterid)
-    {
-        try
-        {
-            ResultSet rs = st.executeQuery("select * from modules where userid=" + userid + " and semesterid=" + semesterid);
-            return resultSetToModule(rs);
-        }
-        catch(Exception e)
-        {
-            return new Module(-1, 0, 0, "", 0);
-        }
-    }
-
-    public Module updateModule(Module m)
-    {
-
-        try {
-            Module module = getModule(m.getUserid(), m.getsemesterid());
-            if(module == null)
-            {
-                addModule(m);
-            }
-            else
-            {
-                st.executeUpdate("update modules set activated=" + m.getActivated() + ", semesterid=" + m.getsemesterid() + ", name='" + m.getName() + "' where id=" + module.getid());
-            }
-
-            Module test = getModule(m.getUserid(), m.getsemesterid());
-            System.out.println(test.getActivated());
-            return test;
-        }
-        catch (SQLException ex) {
-            ex.printStackTrace();
-            return null;
-        }
-    }
-
-    public boolean deleteModule(int semesterid, int userid)
-    {
-        try {
-            st.executeUpdate("delete from modules where semesterid=" + semesterid + " and userid=" + userid);
-            return true;
-        }
-        catch(Exception ex) {
-            return false;
-        }
-    }
-
-    public Module resultSetToModule(ResultSet rs) {
-        try {
-            rs.next();
-            return new Module(
-                    rs.getInt("id"),
-                    rs.getInt("userid"),
-                    rs.getInt("semesterid"),
-                    rs.getString("name"),
-                    rs.getInt("activated"));
-        }
-        catch (Exception ex) {
-            return null;
-        }
-    }
-
-    /**
-     USER
-     */
-
-    //Alle User, die nicht admin sind
-    public User[] getAllUsers()
-    {
-        try
-        {
-            ResultSet rs = st.executeQuery("select * from users where permission=0");
-
-            User u = null;
-
-            List<User> output = new ArrayList<>();
-
-            while((u = resultSetToUser(rs)) != null)
-            {
-                u.clearOutPassword();
-                output.add(u);
-            }
-
-            return output.toArray(new User[0]);
-        }
-        catch(Exception e)
-        {
-            return null;
-        }
-    }
-
-    //einen User
-    public User getUser(String mail, String password)
-    {
-
-        try
-        {
-            ResultSet rs = st.executeQuery("select * from users where mail = '" + mail + "' and password = '" + password + "'");
-            return resultSetToUser(rs);
-        } catch (Exception e)
-        {
-            e.printStackTrace();
-        }
-
-        return null;
-    }
-
-    public User getUser(int id)
-    {
-        try
-        {
-            ResultSet rs = st.executeQuery("select * from users where id=" + id);
-            return resultSetToUser(rs);
-        } catch (Exception e)
-        {
-            return null;
-        }
-    }
-
-    public User getUser(String mail)
-    {
-        try
-        {
-            ResultSet rs = st.executeQuery("select * from users where mail='" + mail + "'");
-            User u = resultSetToUser(rs);
-            if(u != null) u.clearOutPassword();
-
-            return u;
-        } catch (SQLException e)
-        {
-            e.printStackTrace();
-            return null;
-        }
-    }
-
-    public User resultSetToUser(ResultSet rs)
-    {
-        try
-        {
-            rs.next();
-            return new User(
-                    rs.getInt("id"),
-                    rs.getString("firstname"),
-                    rs.getString("lastname"),
-                    rs.getString("mail"),
-                    rs.getString("password"),
-                    rs.getInt("permission")
-            );
-        }
-        catch(Exception e)
-        {
-            return null;
-        }
-    }
-
-    //add a new user object to the database returns if process was successful
-    public User addUser(User user)
-    {
-        //check if mail and passwort (key user information) is given
-        if (user.getMail() == null || user.getPassword() == null)
-        {
-            return null;
-        }
-
-        try
-        {
-            String password = user.getPassword();
-            if(encrypted)
-            {
-                RSA rsa = RSA.getInstance();
-                byte[] psw = rsa.loadByteArray(password);
-                try {
-                    password = rsa.decrypt(psw);
-                } catch (Exception e) {
-                    e.printStackTrace();
-                }
-            }
-            st.executeUpdate("insert into users (firstname, lastname, mail, password, permission) values (" + "'" + user.getFirstName() + "', '" + user.getLastName() + "', '" + user.getMail() + "', '" + password + "', " + 0 + ")");
-            return getUser(user.getMail(), user.getPassword());
-        } catch (Exception e)
-        {
-            return null;
-        }
-
-    }
-
-    public User updateUser(User user, int id, boolean elevationRequestByAdmin)
-    {
-        try
-        {
-            String password = user.getPassword();
-            if(encrypted)
-            {
-                RSA rsa = RSA.getInstance();
-                byte[] psw = rsa.loadByteArray(password);
-                try {
-                    password = rsa.decrypt(psw);
-                } catch (Exception e) {
-                    e.printStackTrace();
-                }
-            }
-
-            if(!elevationRequestByAdmin)
-            {
-                st.executeUpdate("update users set " +
-                        "firstname='" + user.getFirstName() + "', " +
-                        "lastname='" + user.getLastName() + "', " +
-                        "mail='" + user.getMail() + "', " +
-                        "password='" + password + "' " +
-                        "where id=" + id);
-            }
-            else
-            {
-                st.executeUpdate("update users set " +
-                        "firstname='" + user.getFirstName() + "', " +
-                        "lastname='" + user.getLastName() + "', " +
-                        "mail='" + user.getMail() + "', " +
-                        "password='" + password + "'," +
-                        "permission=" + user.getPermissions() +
-                        "where id=" + id);
-            }
-
-            return getUser(id);
-        } catch (SQLException e)
-        {
-            e.printStackTrace();
-            return null;
-        }
-    }
-
-    public boolean deleteUser(String mail)
-    {
-        try
-        {
-            ResultSet rs = st.executeQuery("SELECT id FROM user WHERE mail='" + mail + "'");
-            rs.next();
-            int id = rs.getInt("id");
-            st.executeUpdate("DELETE FROM modules WHERE lecturerId = " + id);
-
-            st.executeUpdate("delete from users where mail='" + mail + "'");
-            return true;
-        }
-        catch(Exception e)
-        {
-            e.printStackTrace();
-            return false;
-        }
-    }
-}

backend/src/main/java/com/example/backend/anwprj/Entries/Entry.java

@@ -1,66 +0,0 @@
-package com.example.backend.anwprj.Entries;
-
-//entry data class
-public class Entry
-{
-    private int id;
-    private int daynumber;
-    private int yearnumber;
-    private int usercreatedbyid;
-    private int timestart;
-    private int timeend;
-    private int semesterid;
-    private String info;
-
-    public Entry(int id, int daynumber, int yearnumber, int usercreatedbyid, int timestart, int timeend, int semesterid, String info)
-    {
-        this.id = id;
-        this.daynumber = daynumber;
-        this.yearnumber = yearnumber;
-        this.usercreatedbyid = usercreatedbyid;
-        this.timestart = timestart;
-        this.timeend = timeend;
-        this.semesterid = semesterid;
-        this.info = info;
-    }
-
-    public int getId()
-    {
-        return id;
-    }
-
-    public int getDaynumber()
-    {
-        return daynumber;
-    }
-
-    public int getYearnumber()
-    {
-        return yearnumber;
-    }
-
-    public int getUsercreatedbyid()
-    {
-        return usercreatedbyid;
-    }
-
-    public int getTimestart()
-    {
-        return timestart;
-    }
-
-    public int getTimeend()
-    {
-        return timeend;
-    }
-
-    public int getSemesterid()
-    {
-        return semesterid;
-    }
-
-    public String getInfo()
-    {
-        return info;
-    }
-}

backend/src/main/java/com/example/backend/anwprj/Module/Module.java

@@ -1,31 +0,0 @@
-package com.example.backend.anwprj.Module;
-
-//module data class
-public class Module {
-    private int id;
-    private int userid;
-    private int semesterid;
-    private String name;
-    private int activated;
-
-
-    public Module(int id, int userid, int semesterid, String name, int activated)
-    {
-        this.id = id;
-        this.userid = userid;
-        this.semesterid = semesterid;
-        this.name = name;
-        this.activated = activated;
-    }
-
-    public int getid() { return id; }
-
-    public int getUserid() { return userid; }
-
-    public int getsemesterid() { return semesterid; }
-
-    public String getName() { return name; }
-
-    public int getActivated() { return activated; }
-
-}

backend/src/main/java/com/example/backend/anwprj/Semesters/Semester.java

@@ -1,45 +0,0 @@
-package com.example.backend.anwprj.Semesters;
-
-//semester data class
-public class Semester
-{
-    private int id;
-    private int startday;
-    private int endday;
-    private String name;
-    private int startyear;
-    private int endyear;
-
-    public Semester(int id, int startday, int endday, String name, int startyear, int endyear) {
-        this.id = id;
-        this.startday = startday;
-        this.endday = endday;
-        this.name = name;
-        this.startyear = startyear;
-        this.endyear = endyear;
-    }
-
-    public int getId() {
-        return id;
-    }
-
-    public int getStartday() {
-        return startday;
-    }
-
-    public int getEndday() {
-        return endday;
-    }
-
-    public String getName() {
-        return name;
-    }
-
-    public int getStartyear() {
-        return startyear;
-    }
-
-    public int getEndyear() {
-        return endyear;
-    }
-}

backend/src/main/java/com/example/backend/anwprj/Users/User.java

@@ -1,57 +0,0 @@
-package com.example.backend.anwprj.Users;
-
-//user data class
-public class User
-{
-    private int id;
-    private String firstName;
-    private String lastName;
-    private String mail;
-    private String password;
-    private int permissions;
-
-    public User(int id, String firstName, String lastName, String mail, String password, int permissions)
-    {
-        this.id = id;
-        this.firstName = firstName;
-        this.lastName = lastName;
-        this.mail = mail;
-        this.password = password;
-        this.permissions = permissions;
-    }
-
-    public int getId()
-    {
-        return id;
-    }
-
-    public String getFirstName()
-    {
-        return firstName;
-    }
-
-    public String getLastName()
-    {
-        return lastName;
-    }
-
-    public String getMail()
-    {
-        return mail;
-    }
-
-    public String getPassword()
-    {
-        return password;
-    }
-
-    public int getPermissions()
-    {
-        return permissions;
-    }
-
-    public void clearOutPassword()
-    {
-        password = "****";
-    }
-}

backend/src/main/java/com/example/backend/anwprj/Users/UserPermissions.java

@@ -1,20 +0,0 @@
-package com.example.backend.anwprj.Users;
-
-//mapping of the integer rights to enum
-public enum UserPermissions
-{
-    self(0),
-    admin(1);
-
-    private final int value;
-
-    public int getValue()
-    {
-        return value;
-    }
-
-    private UserPermissions(int value)
-    {
-        this.value = value;
-    }
-}

backend/src/main/java/com/example/backend/anwprj/Users/UserSessionIDHandler.java

@@ -1,68 +0,0 @@
-package com.example.backend.anwprj.Users;
-
-import com.example.backend.anwprj.Database.DataBaseHandler;
-
-import java.nio.charset.StandardCharsets;
-import java.util.HashMap;
-
-public class UserSessionIDHandler
-{
-    //stores mapping of session ids to users
-    public static HashMap<String, User> mapping = new HashMap<>();
-
-    //returns a user object by its session id (ONLY FOR SERVER INTERNAL USE!)
-    public static User getUserBySessionID(String sessionID)
-    {
-        return mapping.get(sessionID);
-    }
-
-    public static boolean removeUser(String sessionID)
-    {
-        try
-        {
-            mapping.remove(sessionID);
-            return true;
-        }
-        catch(Exception e)
-        {
-            return false;
-        }
-    }
-
-    public static String addUser(String mail, String password)
-    {
-        //try to get user from database
-        User user = DataBaseHandler.getInstance().getUser(mail, password);
-
-        //if user exists
-        if(user != null)
-        {
-            //generate random session id based on ascii table
-            byte[] id = new byte[100];
-
-            for(int i = 0; i < id.length; i++)
-            {
-                id[i] = (byte) (Math.random() * 26 + 64);
-            }
-
-            String generatedString = new String(id, StandardCharsets.US_ASCII);
-
-            mapping.put(generatedString, user);
-
-            //makes user session expire after ca. 2h
-            new java.util.Timer().schedule(new java.util.TimerTask(){
-
-                @Override
-                public void run()
-                {
-                    mapping.remove(generatedString);
-                    return;
-                }
-            }, 7500000);
-
-            return generatedString;
-        }
-
-        return "failed";
-    }
-}

backend/src/main/java/com/example/backend/anwprj/controller/EntriesController.java

@@ -1,102 +0,0 @@
-package com.example.backend.anwprj.controller;
-
-import com.example.backend.anwprj.Database.DataBaseHandler;
-import com.example.backend.anwprj.Entries.Entry;
-import com.example.backend.anwprj.Users.User;
-import com.example.backend.anwprj.Users.UserSessionIDHandler;
-import org.springframework.http.HttpStatus;
-import org.springframework.http.ResponseEntity;
-import org.springframework.web.bind.annotation.*;
-
-@RestController
-public class EntriesController
-{
-    private DataBaseHandler db;
-
-    {
-        db = DataBaseHandler.getInstance();
-    }
-
-    /**
-     GET
-     a set of entries for a week, based on the semester, the startdaynumber of the week and the year
-     Every user is allowed
-     */
-    @CrossOrigin
-    @GetMapping("/entries")
-    public ResponseEntity<Entry[][]> getEntries(@RequestParam(name = "semesterid") int semesterid,
-                                                @RequestParam(name = "daynumber") int daynumber,
-                                                @RequestParam(name = "yearnumber") int yearnumber,
-                                                @RequestParam(name = "sessionid") String sessionid)
-    {
-        User sessionUser = UserSessionIDHandler.getUserBySessionID(sessionid);
-
-        if (sessionUser != null)
-        {
-            return new ResponseEntity<>(db.getEntries(semesterid, daynumber, yearnumber), HttpStatus.OK);
-        }
-
-        return new ResponseEntity<>(null, HttpStatus.FORBIDDEN);
-    }
-
-    /**
-     POST
-     A new entry to the database. Every user except of admins is allowed
-     */
-
-    @CrossOrigin
-    @PostMapping("/entries")
-    public ResponseEntity<Boolean> postEntry(@RequestBody Entry entry, @RequestParam(name = "sessionid") String sessionid)
-    {
-        User sessionUser = UserSessionIDHandler.getUserBySessionID(sessionid);
-
-        if (sessionUser != null)
-        {
-            db.addEntry(entry);
-            return new ResponseEntity<>(true, HttpStatus.OK);
-        }
-
-        return new ResponseEntity<>(false, HttpStatus.FORBIDDEN);
-    }
-
-
-    /**
-     PUT
-     Update the endTime of an existing entry in the database. Every user except of admins is allowed
-     */
-
-    @CrossOrigin
-    @PutMapping("/entries")
-    public ResponseEntity<Boolean> updateEntry(@RequestParam(name="sessionid") String sessionid, @RequestBody Entry entry)
-    {
-        User sessionUser = UserSessionIDHandler.getUserBySessionID(sessionid);
-        if (sessionUser != null)
-        {
-            db.updateEntry(entry);
-            return new ResponseEntity<>(true, HttpStatus.OK);
-        }
-
-        return new ResponseEntity<>(false, HttpStatus.FORBIDDEN);
-    }
-
-
-    /**
-     Delete
-     an existing entry from the database
-     */
-    @CrossOrigin
-    @DeleteMapping("/entries")
-    public ResponseEntity<Boolean> deleteEntry(@RequestParam(name = "id") int id, @RequestParam(name = "sessionid") String sessionid)
-    {
-        User sessionUser = UserSessionIDHandler.getUserBySessionID(sessionid);
-
-        if (sessionUser != null)
-        {
-            db.deleteEntry(id);
-            return new ResponseEntity<>(true, HttpStatus.OK);
-        }
-
-        return new ResponseEntity<>(false, HttpStatus.FORBIDDEN);
-    }
-
-}

backend/src/main/java/com/example/backend/anwprj/controller/ModuleController.java

@@ -1,175 +0,0 @@
-package com.example.backend.anwprj.controller;
-
-import com.example.backend.anwprj.Database.DataBaseHandler;
-import com.example.backend.anwprj.Module.Module;
-import com.example.backend.anwprj.Users.User;
-import com.example.backend.anwprj.Users.UserPermissions;
-import com.example.backend.anwprj.Users.UserSessionIDHandler;
-import org.springframework.http.HttpStatus;
-import org.springframework.http.ResponseEntity;
-import org.springframework.web.bind.annotation.*;
-
-import java.util.ArrayList;
-import java.util.List;
-
-/**
- * Ein Modul hier entspricht nicht z.b. Analysis im Allgemeinen.
- * Es beschreibt die Verbindung zwischen einem Dozenten und Analysis in einem Speziellen Semester.
- */
-
-@RestController
-public class ModuleController
-{
-    private final DataBaseHandler db;
-
-    {
-        db = DataBaseHandler.getInstance();
-    }
-
-
-    /**
-    GET
-     A Module by its id
-     */
-    @CrossOrigin
-    @GetMapping("/module/id")
-    public ResponseEntity<Module[]> getModules(
-            @RequestParam(name = "sessionid") String sessionID)
-    {
-
-        User user = UserSessionIDHandler.getUserBySessionID(sessionID);
-
-        if (user != null)
-        {
-            Module[] modules = db.getModules(user.getId());
-            if (modules != null)
-            {
-                return new ResponseEntity<>(modules, HttpStatus.OK);
-            }
-
-            return new ResponseEntity<>(HttpStatus.NOT_FOUND);
-        }
-
-        return new ResponseEntity<>(HttpStatus.FORBIDDEN);
-    }
-
-    /**
-     GET
-    Get A Module by the matching semester and user id (important for edit function in frontend)
-     */
-    @CrossOrigin
-    @GetMapping("/module/suid")
-    public ResponseEntity<Module[]> getModulesBySemesterUserID(@RequestParam(name = "sessionid") String sessionid, @RequestParam(name = "userid") String userid, @RequestParam(name = "semesterid") int semesterid)
-    {
-        User user = UserSessionIDHandler.getUserBySessionID(sessionid);
-        String[] userIDSSplit = userid.split("a");
-        int[] userIDS = new int[userIDSSplit.length];
-        for(int i = 0; i < userIDS.length; i++)
-        {
-            userIDS[i] = Integer.parseInt(userIDSSplit[i]);
-        }
-
-        if(user != null && user.getPermissions() == UserPermissions.admin.getValue())
-        {
-            List<Module> result = new ArrayList<>();
-
-            for(int i = 0; i < userIDS.length; i++)
-            {
-                result.add(db.getModuleBySemesterUserID(userIDS[i], semesterid));
-            }
-
-            return new ResponseEntity<>(result.toArray(new Module[0]), HttpStatus.OK);
-        }
-
-        return new ResponseEntity<>(HttpStatus.FORBIDDEN);
-    }
-
-    /**
-     GET
-     all modules from the database. (Not used now)
-     */
-    @CrossOrigin
-    @GetMapping("/module/all")
-    public ResponseEntity<Module[]> getModule(@RequestParam(name = "sessionid") String sessionid)
-    {
-        User u = UserSessionIDHandler.getUserBySessionID(sessionid);
-
-        if (u != null)
-        {
-            if (u.getPermissions() == UserPermissions.admin.getValue())
-            {
-                return new ResponseEntity<>(db.getAllModules(), HttpStatus.OK);
-            }
-        }
-
-        return null;
-    }
-
-    /**
-     POST
-     a new module entry. (When a user is selected in a semester.)
-     */
-    @CrossOrigin
-    @PostMapping("/module")
-    public ResponseEntity<Module> addModule(@RequestBody Module module, @RequestParam(name = "sessionid") String sessionID)
-    {
-
-        System.out.println("test1");
-        User user = UserSessionIDHandler.getUserBySessionID(sessionID);
-
-        if (user.getPermissions() == UserPermissions.admin.getValue())
-        {
-            Module m = db.addModule(module);
-            if (m != null)
-            {
-                return new ResponseEntity<>(m, HttpStatus.OK);
-            }
-
-            return new ResponseEntity<>(HttpStatus.NOT_FOUND);
-        }
-
-
-        return new ResponseEntity<>(HttpStatus.FORBIDDEN);
-    }
-
-    /**
-    PUT
-     Update a Module
-     */
-    @CrossOrigin
-    @PutMapping("/module")
-    public ResponseEntity<Module> updateModule(@RequestBody Module module, @RequestParam(name = "sessionid") String sessionID)
-    {
-
-        User u = UserSessionIDHandler.getUserBySessionID(sessionID);
-        if (u != null && u.getPermissions() == UserPermissions.admin.getValue())
-        {
-            Module m = db.updateModule(module);
-
-            if (m != null)
-            {
-                return new ResponseEntity<>(m, HttpStatus.OK);
-            }
-
-            return new ResponseEntity<>(HttpStatus.NOT_FOUND);
-        }
-
-        return new ResponseEntity<>(HttpStatus.FORBIDDEN);
-    }
-
-    /**
-    DELETE
-    Delete A Module
-     */
-    @CrossOrigin
-    @DeleteMapping("/module")
-    public void deleteModule(@RequestParam(name = "sessionid") String sessionid, @RequestParam(name = "semesterid") int semesterid, @RequestParam(name = "userid") int userid)
-    {
-        User u = UserSessionIDHandler.getUserBySessionID(sessionid);
-        if (u != null && u.getPermissions() == UserPermissions.admin.getValue())
-        {
-            db.deleteModule(semesterid, userid);
-        }
-
-    }
-}

backend/src/main/java/com/example/backend/anwprj/controller/SemesterController.java

@@ -1,136 +0,0 @@
-package com.example.backend.anwprj.controller;
-
-import com.example.backend.anwprj.Database.DataBaseHandler;
-import com.example.backend.anwprj.Semesters.Semester;
-import com.example.backend.anwprj.Users.User;
-import com.example.backend.anwprj.Users.UserPermissions;
-import com.example.backend.anwprj.Users.UserSessionIDHandler;
-import org.springframework.http.HttpStatus;
-import org.springframework.http.ResponseEntity;
-import org.springframework.web.bind.annotation.*;
-
-@RestController
-public class SemesterController
-{
-    //reference to the database handler
-    private DataBaseHandler db;
-
-    {
-        db = DataBaseHandler.getInstance();
-    }
-
-    //get a semester object by its name
-    @CrossOrigin
-    @GetMapping("/semester")
-    public ResponseEntity<Semester> getSemester(@RequestParam(name="name") String name, @RequestParam(name="sessionid") String sessionID)
-    {
-        User u = UserSessionIDHandler.getUserBySessionID(sessionID);
-
-        if(u != null)
-        {
-            Semester s = db.getSemester(name);
-            if (s != null)
-            {
-                return new ResponseEntity<>(s, HttpStatus.OK);
-            }
-
-            return new ResponseEntity<>(HttpStatus.NOT_FOUND);
-        }
-
-        return new ResponseEntity<>(HttpStatus.FORBIDDEN);
-    }
-
-    @CrossOrigin
-    @GetMapping("/semester/id")
-    public ResponseEntity<Semester> getSemester(@RequestParam(name="id") int id, @RequestParam(name="sessionid") String sessionID)
-    {
-        User u = UserSessionIDHandler.getUserBySessionID(sessionID);
-
-        if(u != null)
-        {
-            Semester s = db.getSemester(id);
-            if(s != null)
-            {
-                return new ResponseEntity<>(s, HttpStatus.OK);
-            }
-
-            return new ResponseEntity<>(HttpStatus.NOT_FOUND);
-        }
-
-        return new ResponseEntity<>(HttpStatus.FORBIDDEN);
-    }
-
-    @CrossOrigin
-    @GetMapping("/semester/all")
-    public ResponseEntity<Semester[]> getSemester(@RequestParam(name="sessionid") String sessionid)
-    {
-        User u = UserSessionIDHandler.getUserBySessionID(sessionid);
-
-        if(u != null)
-        {
-            if(u.getPermissions() == UserPermissions.admin.getValue())
-            {
-                return new ResponseEntity<>(db.getAllSemesters(), HttpStatus.OK);
-            }
-        }
-
-        return null;
-    }
-
-
-    //a new semester add is requested (only allowed for admin users)
-    @CrossOrigin
-    @PostMapping("/semester")
-    public ResponseEntity<Semester> addSemester(@RequestBody Semester semester, @RequestParam(name="sessionid") String sessionID)
-    {
-        User user = UserSessionIDHandler.getUserBySessionID(sessionID);
-
-        if(user.getPermissions() == UserPermissions.admin.getValue())
-        {
-            Semester s = db.addSemester(semester);
-            if(s != null)
-            {
-
-                return new ResponseEntity<>(s, HttpStatus.OK);
-            }
-
-            return new ResponseEntity<>(null, HttpStatus.NOT_FOUND);
-        }
-
-
-        return new ResponseEntity<>(HttpStatus.FORBIDDEN);
-    }
-
-
-    @CrossOrigin
-    @PutMapping("/semester")
-    public ResponseEntity<Semester> updateSemester(@RequestBody Semester semester, @RequestParam(name="sessionid") String sessionID)
-    {
-        User u = UserSessionIDHandler.getUserBySessionID(sessionID);
-        if(u != null && u.getPermissions() == UserPermissions.admin.getValue())
-        {
-            Semester s = db.updateSemester(semester);
-
-            if(s != null)
-            {
-                return new ResponseEntity<>(s, HttpStatus.OK);
-            }
-
-            return new ResponseEntity<>(HttpStatus.NOT_FOUND);
-        }
-
-        return new ResponseEntity<>(HttpStatus.FORBIDDEN);
-    }
-
-    @CrossOrigin
-    @DeleteMapping("/semester")
-    public void deleteSemester(@RequestParam(name="sessionid") String sessionid, @RequestParam(name="id") int id)
-    {
-        User u = UserSessionIDHandler.getUserBySessionID(sessionid);
-        if(u != null && u.getPermissions() == UserPermissions.admin.getValue())
-        {
-            db.deleteSemester(id);
-        }
-
-    }
-}

backend/src/main/java/com/example/backend/anwprj/controller/UserController.java

@@ -1,184 +0,0 @@
-package com.example.backend.anwprj.controller;
-
-import com.example.backend.discard.Encryption.RSA;
-import com.example.backend.anwprj.Database.DataBaseHandler;
-import com.example.backend.anwprj.Users.User;
-import com.example.backend.anwprj.Users.UserPermissions;
-import com.example.backend.anwprj.Users.UserSessionIDHandler;
-import org.springframework.http.HttpStatus;
-import org.springframework.http.ResponseEntity;
-import org.springframework.web.bind.annotation.*;
-
-@RestController
-public class UserController {
-    //reference to the database handler
-    private DataBaseHandler db;
-
-    {
-        db = DataBaseHandler.getInstance();
-    }
-
-    @CrossOrigin
-    @GetMapping("/users/all")
-    public ResponseEntity<User[]> getAllUsers(@RequestParam(name = "sessionid") String sessionid)
-    {
-        User u = UserSessionIDHandler.getUserBySessionID(sessionid);
-
-        if(u != null && u.getPermissions() == UserPermissions.admin.getValue())
-        {
-            User[] output = db.getAllUsers();
-            return new ResponseEntity<>(output, HttpStatus.OK);
-        }
-
-        return new ResponseEntity<>(HttpStatus.FORBIDDEN);
-    }
-
-
-    //a user wants to login
-    @CrossOrigin
-    @GetMapping("/users")
-    public ResponseEntity<String> login(@RequestParam(name = "mail") String mail, @RequestParam(name = "password") String password) {
-        //generate a session id for the user trying to login
-        boolean isEncrypted = false;
-        if(isEncrypted)
-        {
-            RSA rsa = RSA.getInstance();
-            byte[] psw = rsa.loadByteArray(password);
-            try {
-                password = rsa.decrypt(psw);
-            } catch (Exception e) {
-                e.printStackTrace();
-            }
-        }
-
-        String sessionID = UserSessionIDHandler.addUser(mail, password);
-
-        return new ResponseEntity<>(sessionID, HttpStatus.OK);
-    }
-
-    @CrossOrigin
-    @GetMapping("/users/logout")
-    public ResponseEntity<Boolean> logout(@RequestParam(name = "sessionid") String sessionID) {
-        boolean success = UserSessionIDHandler.removeUser(sessionID);
-        return new ResponseEntity<>(success, HttpStatus.OK);
-    }
-
-    @CrossOrigin
-    @GetMapping("/users/data")
-    public ResponseEntity<User> getUserData(
-            @RequestParam(name = "sessionid") String sessionID,
-            @RequestParam(name = "mail") String mail) {
-        User sessionUser = UserSessionIDHandler.getUserBySessionID(sessionID);
-
-        if (sessionUser != null) {
-            System.out.println(sessionUser.getMail() + " " + mail);
-
-            if (sessionUser.getMail().equals(mail) || sessionUser.getPermissions() == UserPermissions.admin.getValue()) {
-                User searchedUser = db.getUser(mail);
-                return new ResponseEntity<>(searchedUser, HttpStatus.OK);
-            }
-        }
-
-        return new ResponseEntity<>(HttpStatus.FORBIDDEN);
-    }
-
-    @CrossOrigin
-    @GetMapping("/users/check")
-    public ResponseEntity<User> checkLogin(@RequestParam(name="sessionid") String sessionid)
-    {
-        User u = UserSessionIDHandler.getUserBySessionID(sessionid);
-
-        if(u != null)
-        {
-            return new ResponseEntity<>(db.getUser(u.getId()), HttpStatus.OK);
-        }
-
-        return new ResponseEntity<>(HttpStatus.NOT_FOUND);
-    }
-
-    //adds a new user to the database (cannot create an admin user)
-    @CrossOrigin
-    @PostMapping("/users")
-    public ResponseEntity<String> addUser(@RequestBody User user) {
-        User checkUser = db.getUser(user.getMail());
-
-        if (checkUser != null) {
-            return new ResponseEntity<>("mail", HttpStatus.FORBIDDEN);
-        }
-
-        //if user was successfully added to database
-        User u = db.addUser(user);
-
-        if (u != null) {
-            //generate a session id
-            return new ResponseEntity<String>(UserSessionIDHandler.addUser(user.getMail(), user.getPassword()), HttpStatus.OK);
-        }
-
-        return new ResponseEntity<String>(HttpStatus.BAD_REQUEST);
-    }
-
-    @CrossOrigin
-    @PutMapping("/users")
-    public ResponseEntity<Boolean> updateUser(@RequestParam(name = "sessionid") String sessionID, @RequestBody User u, @RequestParam(name = "mail") String mail) {
-        User sessionUser = UserSessionIDHandler.getUserBySessionID(sessionID);
-
-        if (sessionUser != null) {
-            if (sessionUser.getMail().equals(mail) || sessionUser.getPermissions() == UserPermissions.admin.getValue()) {
-                System.out.println(sessionUser.getId());
-
-                User resultingUser = db.updateUser(u, sessionUser.getId(), false);
-
-                if (resultingUser != null) {
-                    UserSessionIDHandler.removeUser(sessionID);
-                    return new ResponseEntity<>(true, HttpStatus.OK);
-                }
-
-                return new ResponseEntity<>(false, HttpStatus.NOT_FOUND);
-            }
-        }
-
-        return new ResponseEntity<>(false, HttpStatus.FORBIDDEN);
-    }
-
-    @CrossOrigin
-    @PutMapping("/users/elevate")
-    public ResponseEntity<Boolean> elevateUser(
-            @RequestParam(name = "sessionid") String sessionID,
-            @RequestParam(name = "mail") String mail,
-            @RequestParam(name = "permission") int permission)
-    {
-        User sessionUser = UserSessionIDHandler.getUserBySessionID(sessionID);
-
-        if(sessionUser != null && sessionUser.getPermissions() == UserPermissions.admin.getValue())
-        {
-            System.out.println("test");
-            User userToUpdateTemplate = db.getUser(mail);
-            User userToUpdate = new User(userToUpdateTemplate.getId(), userToUpdateTemplate.getFirstName(), userToUpdateTemplate.getLastName(),
-                    userToUpdateTemplate.getMail(), userToUpdateTemplate.getPassword(), permission);
-
-            User resultingUser = db.updateUser(userToUpdate, userToUpdate.getId(), true);
-
-            if(resultingUser == null)
-            {
-                return new ResponseEntity<>(false, HttpStatus.NOT_FOUND);
-            }
-
-            return new ResponseEntity<>(true, HttpStatus.OK);
-        }
-
-        return new ResponseEntity<>(false, HttpStatus.FORBIDDEN);
-    }
-
-    @CrossOrigin
-    @DeleteMapping("/users")
-    public ResponseEntity<Boolean> deleteUser(@RequestParam(name = "sessionid") String sessionID, @RequestParam(name = "mail") String mail) {
-        User sessionUser = UserSessionIDHandler.getUserBySessionID(sessionID);
-
-        if (sessionUser != null && sessionUser.getPermissions() == UserPermissions.admin.getValue()) {
-            return new ResponseEntity<>(db.deleteUser(mail), HttpStatus.OK);
-        }
-
-        return new ResponseEntity<>(HttpStatus.FORBIDDEN);
-    }
-
-}

backend/src/main/java/com/example/backend/discard/DayController.java

@@ -1,60 +0,0 @@
-package com.example.backend.discard;
-
-import com.example.backend.anwprj.Database.DataBaseHandler;
-import com.example.backend.discard.Days.Day;
-import com.example.backend.anwprj.Users.User;
-import com.example.backend.anwprj.Users.UserPermissions;
-import com.example.backend.anwprj.Users.UserSessionIDHandler;
-import org.springframework.http.HttpStatus;
-import org.springframework.http.ResponseEntity;
-import org.springframework.web.bind.annotation.*;
-
-@RestController
-public class DayController
-{
-
-//    private DataBaseHandler db;
-//
-//    {
-//        db = DataBaseHandler.getInstance();
-//    }
-//
-//    @CrossOrigin
-//    @GetMapping("/days")
-//    public ResponseEntity<Day> getDay(
-//            @RequestParam(name="sessionid") String sessionID,
-//            @RequestParam(name="dayinyear") int dayinyear,
-//            @RequestParam(name="yearnumber") int yearnumber,
-//            @RequestParam(name="semesterid") int semesterID)
-//    {
-//        User u = UserSessionIDHandler.getUserBySessionID(sessionID);
-//
-//        if(u != null)
-//        {
-//            Day d = db.getDay(dayinyear, yearnumber, semesterID);
-//
-//            if (d != null)
-//            {
-//                return new ResponseEntity<>(d, HttpStatus.OK);
-//            }
-//
-//            return new ResponseEntity<>(HttpStatus.NOT_FOUND);
-//        }
-//
-//        return new ResponseEntity<>(HttpStatus.FORBIDDEN);
-//    }
-//
-//    @CrossOrigin
-//    @PostMapping("/days")
-//    public ResponseEntity<Day> addDay(@RequestBody Day day, @RequestParam(name="sessionid") String sessionID)
-//    {
-//        User u = UserSessionIDHandler.getUserBySessionID(sessionID);
-//
-//        if(u != null && u.getPermissions() == UserPermissions.admin.getValue())
-//        {
-//            return new ResponseEntity<>(db.addDay(day), HttpStatus.OK);
-//        }
-//
-//        return new ResponseEntity<>(null, HttpStatus.FORBIDDEN);
-//    }
-}

backend/src/main/java/com/example/backend/discard/Days/Day.java

@@ -1,32 +0,0 @@
-package com.example.backend.discard.Days;
-
-public class Day
-{
-    private int id;
-    private int dayinyear;
-    private int yearnumber;
-    private int semesterid;
-
-    public Day(int id, int dayinyear, int yearnumber, int semesterid) {
-        this.id = id;
-        this.dayinyear = dayinyear;
-        this.yearnumber = yearnumber;
-        this.semesterid = semesterid;
-    }
-
-    public int getId() {
-        return id;
-    }
-
-    public int getDayinyear() {
-        return dayinyear;
-    }
-
-    public int getYearnumber() {
-        return yearnumber;
-    }
-
-    public int getSemesterid() {
-        return semesterid;
-    }
-}

backend/src/main/java/com/example/backend/discard/Encryption/RSA.java

@@ -1,58 +0,0 @@
-package com.example.backend.discard.Encryption;
-
-import javax.crypto.Cipher;
-import java.io.*;
-import java.nio.charset.StandardCharsets;
-import java.security.*;
-
-public class RSA {
-
-    private PublicKey publicKey;
-    private PrivateKey privateKey;
-
-    private static RSA instance = null;
-
-    public static RSA getInstance()
-    {
-        if(instance == null)
-        {
-            instance = new RSA();
-        }
-
-        return instance;
-    }
-
-    private RSA(){}
-
-    public String decrypt(byte[] text) throws Exception
-    {
-        readKeyPairs();
-        var cipher = Cipher.getInstance("RSA/ECB/PKCS1Padding");
-        cipher.init(Cipher.DECRYPT_MODE, privateKey);
-        var plainText = cipher.doFinal(text);
-        return new String(plainText, StandardCharsets.US_ASCII);
-    }
-
-    private void readKeyPairs() throws Exception
-    {
-        var publicInput = new ObjectInputStream(new FileInputStream(new File("./public.kfs")));
-        publicKey = (PublicKey) publicInput.readObject();
-        publicInput.close();
-
-        var privateInput = new ObjectInputStream(new FileInputStream(new File("./private.kfs")));
-        privateKey  = (PrivateKey) privateInput.readObject();
-        privateInput.close();
-    }
-
-    public byte[] loadByteArray(String text)
-    {
-        String[] split = text.split(",");
-        byte[] output = new byte[split.length];
-        for(int i = 0; i < split.length; i++)
-        {
-            output[i] = Byte.parseByte(split[i]);
-        }
-
-        return output;
-    }
-}

backend/src/main/java/com/example/backend/discard/OldDataBaseFunctions.txt

@@ -1,124 +0,0 @@
-    /**
-     * WEEKS
-     */
-
-    public Week addWeek(Week week)
-    {
-        try
-        {
-            st.executeUpdate("insert into weeks (semesterid, weeknumber) values (" + week.getSemesterid() + ", " + week.getWeeknumber() + ")");
-
-            return getWeek(week.getSemesterid(), week.getWeeknumber());
-
-        } catch (SQLException e)
-        {
-            return null;
-        }
-    }
-
-    public Week getWeek(int id)
-    {
-        ResultSet rs = null;
-        try
-        {
-            rs = st.executeQuery("select * from weeks where id=" + id);
-
-            return resultSetToWeek(rs);
-
-        } catch (SQLException e)
-
-        {
-            return null;
-        }
-
-    }
-
-    public Week getWeek(int semesterid, int weeknumber)
-    {
-        try
-        {
-            ResultSet rs = st.executeQuery("select * from weeks where semesterid =" + semesterid + " and weeknumber=" + weeknumber);
-
-            return resultSetToWeek(rs);
-        }
-        catch (SQLException e)
-        {
-            return null;
-        }
-
-    }
-
-    private Week resultSetToWeek(ResultSet rs) {
-        try {
-            rs.next();
-
-            return new Week(
-                    rs.getInt("id"),
-                    rs.getInt("semesterid"),
-                    rs.getInt("weeknumber")
-            );
-        } catch (SQLException e) {
-            return null;
-        }
-    }
-
-    /**
-     DAYS
-     */
-    public Day addDay(Day day)
-    {
-        try
-        {
-            st.executeUpdate("insert into days (dayinyear, yearnumber, semesterid) values (" + day.getDayinyear() + ", " + day.getYearnumber() + ", " + day.getSemesterid() + ")");
-            return getDay(day.getDayinyear(), day.getYearnumber(), day.getSemesterid());
-        } catch (SQLException e)
-        {
-            return null;
-        }
-    }
-
-    public Day getDay(int id)
-    {
-        try
-        {
-            ResultSet rs = st.executeQuery("select * from days where id=" + id);
-
-            return resultSetToDay(rs);
-        }
-        catch(Exception e)
-        {
-            return null;
-        }
-    }
-
-    public Day getDay(int dayinyear, int yearnumber, int semesterid)
-    {
-        try
-        {
-            ResultSet rs = st.executeQuery("select * from days where dayinyear =" + dayinyear + " and yearnumber =" + yearnumber + " and semesterid =" + semesterid);
-
-            return resultSetToDay(rs);
-        }
-        catch(Exception e)
-        {
-            return null;
-        }
-    }
-
-    private Day resultSetToDay(ResultSet rs)
-    {
-        try
-        {
-            rs.next();
-
-            return new Day(
-                    rs.getInt("id"),
-                    rs.getInt("dayinyear"),
-                    rs.getInt("yearnumber"),
-                    rs.getInt("semesterid")
-            );
-        } catch (SQLException e)
-        {
-            return null;
-        }
-    }

backend/src/main/java/com/example/backend/discard/Week/Week.java

@@ -1,26 +0,0 @@
-package com.example.backend.discard.Week;
-
-public class Week {
-
-    private int id;
-    private int semesterid;
-    private int weeknumber;
-
-    public Week(int id, int semesterid, int weeknumber) {
-        this.id = id;
-        this.semesterid = semesterid;
-        this.weeknumber = weeknumber;
-    }
-
-    public int getId() {
-        return id;
-    }
-
-    public int getSemesterid() {
-        return semesterid;
-    }
-
-    public int getWeeknumber() {
-        return weeknumber;
-    }
-}

backend/src/main/java/com/example/backend/discard/WeekController.java

@@ -1,59 +0,0 @@
-package com.example.backend.discard;
-
-import com.example.backend.anwprj.Database.DataBaseHandler;
-import com.example.backend.anwprj.Users.User;
-import com.example.backend.anwprj.Users.UserPermissions;
-import com.example.backend.anwprj.Users.UserSessionIDHandler;
-import org.springframework.http.HttpStatus;
-import com.example.backend.discard.Week.Week;
-import org.springframework.http.ResponseEntity;
-import org.springframework.web.bind.annotation.*;
-
-import java.sql.SQLException;
-
-@RestController
-public class WeekController
-{
-
-//    private DataBaseHandler db;
-//
-//    {
-//        db = DataBaseHandler.getInstance();
-//    }
-//
-//    @CrossOrigin
-//    @GetMapping("/weeks")
-//    public ResponseEntity<Week> getWeek(
-//            @RequestParam(name="sessionid") String sessionID,
-//            @RequestParam(name="semesterid") int semesterID,
-//            @RequestParam(name="weeknumber") int weekNumber) throws SQLException {
-//        User u = UserSessionIDHandler.getUserBySessionID(sessionID);
-//
-//        if(u != null)
-//        {
-//            Week w = db.getWeek(semesterID,weekNumber);
-//
-//            if(w != null)
-//            {
-//                return new ResponseEntity<>(w, HttpStatus.OK);
-//            }
-//            return new ResponseEntity<>(HttpStatus.NOT_FOUND);
-//        }
-//        return new ResponseEntity<>(HttpStatus.FORBIDDEN);
-//    }
-//
-//    @CrossOrigin
-//    @PostMapping("/weeks")
-//    public ResponseEntity<Week> addWeek(@RequestBody Week week, @RequestParam(name="sessionid") String sessionID)
-//    {
-//        User u = UserSessionIDHandler.getUserBySessionID(sessionID);
-//
-//        if(u !=null && u.getPermissions() == UserPermissions.admin.getValue())
-//        {
-//            return new ResponseEntity<>(db.addWeek(week), HttpStatus.OK);
-//        }
-//
-//        return new ResponseEntity<>(null, HttpStatus.FORBIDDEN);
-//    }
-}
-

backend/src/main/resources/application.properties

@@ -1 +0,0 @@
-

backend/src/test/java/com/example/backend/BackendApplicationTests.java

@@ -1,15 +0,0 @@
-package com.example.backend;
-
-import org.junit.jupiter.api.Test;
-import org.springframework.boot.test.context.SpringBootTest;
-
-@SpringBootTest
-class BackendApplicationTests
-{
-
-    @Test
-    void contextLoads()
-    {
-    }
-
-}