Deleted Frontend From Backend

RSA Verschlüsseltes passwort kann über die Klasse RSA enschlüsselt werden. Keys für public - und private key liegen in den Dateien private.kfs und public.kfs

backend/.gitignore

@@ -0,0 +1,33 @@
+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

@@ -0,0 +1,18 @@
+# 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

@@ -0,0 +1,316 @@
+#!/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

@@ -0,0 +1,188 @@
+@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

@@ -0,0 +1,41 @@
+<?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>
+    </dependencies>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.springframework.boot</groupId>
+                <artifactId>spring-boot-maven-plugin</artifactId>
+            </plugin>
+        </plugins>
+    </build>
+
+</project>

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

@@ -0,0 +1,15 @@
+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/DataBaseHandler.java

@@ -0,0 +1,461 @@
+package com.example.backend.anwprj;
+
+import com.example.backend.anwprj.Encryption.RSA;
+import com.example.backend.anwprj.Days.Day;
+import com.example.backend.anwprj.Entries.Entry;
+import com.example.backend.anwprj.Semesters.Semester;
+import com.example.backend.anwprj.Users.User;
+
+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)
+        {
+            System.out.println("No Connection!");
+        }
+    }
+
+    /*
+    TEMPPPPPP
+     */
+    public static class Week
+    {
+        public int semesterid, id, weeknumber;
+
+        public Week(int id, int semesterid, int weeknumber)
+        {
+            this.semesterid = semesterid;
+            this.weeknumber = weeknumber;
+            this.id = id;
+        }
+    }
+    public Week addWeek(Week week)
+    {
+        try
+        {
+            st.executeUpdate("insert into weeks (semesterid, weeknumber) values (" + week.semesterid + ", " + week.weeknumber + ")");
+            return getWeek(week.semesterid, week.weeknumber);
+        } catch (SQLException e)
+        {
+            throw new RuntimeException(e);
+        }
+    }
+
+    public Week getWeek(int semesterid, int weeknumber)
+    {
+        try
+        {
+            ResultSet rs = st.executeQuery("select w.* from weeks w, semester s where s.id=" + semesterid + " and " + "w.weeknumber=" + weeknumber);
+            rs.next();
+            return new Week(rs.getInt("id"), rs.getInt("semesterid"), rs.getInt("weeknumber"));
+        } catch (SQLException e)
+        {
+            throw new RuntimeException(e);
+        }
+    }
+
+    public Week getWeekById(int id)
+    {
+        try
+        {
+            ResultSet rs = st.executeQuery("select * from weeks where id=" + id);
+            rs.next();
+            return new Week(rs.getInt("id"), rs.getInt("semesterid"), rs.getInt("weeknumber"));
+        }
+        catch(Exception e)
+        {
+            return null;
+        }
+    }
+
+    /*
+    TEMP END!!!!!!!!!!!!
+     */
+    /**
+    DAYS
+     */
+    public Day addDay(Day day)
+    {
+        try
+        {
+            st.executeUpdate("insert into days (dayinweek, weekid) values (" + day.getDayinweek() + ", " + day.getWeekid() + ")");
+            Week w = getWeekById(day.getWeekid());
+            return getDay(day.getDayinweek(), w.weeknumber, w.semesterid);
+        } 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 dayinweek, int weeknumber, int semesterid)
+    {
+        try
+        {
+            ResultSet rs = st.executeQuery("select d.* from days d, weeks w, semester s " +
+                    "where d.weekid = w.id and " +
+                    "w.semesterid = s.id and " +
+                    "d.dayinweek = " + dayinweek + " and " +
+                    "w.weeknumber = " + weeknumber + " and " +
+                    "s.id = " + 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("dayinweek"),
+                    rs.getInt("weekid")
+            );
+        } catch (SQLException e)
+        {
+            return null;
+        }
+    }
+
+    /**
+    ENTRIES
+     */
+    //method that returns all entries of a day based on the given parameters
+    public Entry[] getEntries(int dayinweek, int weeknumber, int semesterid, User user)
+    {
+        try
+        {
+            //search the correct data in the database
+            ResultSet rs = st.executeQuery("select distinct e.id, e.dayid, e.usercreatedbyid, e.timestart, e.timeend, e.info " +
+                    "from entries e, days d, weeks w, semester s " +
+                    "where e.dayid = d.id and " +
+                    "d.weekid = w.id and " +
+                    "w.semesterid = s.id and " +
+                    "d.dayinweek = " + dayinweek + " and " +
+                    "w.weeknumber = " + weeknumber + " and " +
+                    "s.id = " + semesterid);
+
+
+            int editable = 0;
+
+            //a temporary list to save entry objects in
+            List<Entry> temp = new ArrayList<>();
+            //while there a still entries for the day
+            while(rs.next())
+            {
+                editable = 0;
+                //if entry has been created by the requesting user set the entry to editable (or the user is admin)
+                if(rs.getInt("usercreatedbyid") == user.getId() || user.getPermissions() == 1)
+                {
+                    editable = 1;
+                }
+
+                temp.add(
+                        new Entry(
+                                rs.getInt("id"),
+                                rs.getInt("dayid"),
+                                rs.getInt("usercreatedbyid"),
+                                rs.getInt("timestart"),
+                                rs.getInt("timeend"),
+                                rs.getString("info"),
+                                editable
+                        )
+                );
+            }
+
+            //return the temporary list as an array
+            return temp.toArray(new Entry[0]);
+
+        } catch (SQLException e)
+        {
+            throw new RuntimeException(e);
+        }
+    }
+
+    /**
+    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 (startweeknumber, endweeknumber, name, startyear, endyear) values (" + s.getStartweeknumber() + ", " + s.getEndweeknumber() + ", '" + s.getName() + "', " + s.getStartyear() + ", " + s.getEndyear() + ")");
+            return getSemester(s.getName());
+
+        } catch (Exception e)
+        {
+            return null;
+        }
+    }
+
+    public Semester updateSemester(Semester semester)
+    {
+        try
+        {
+            st.executeUpdate("update semester set startweeknumber=" + semester.getStartweeknumber() + ", " +
+                    "endweeknumber=" + semester.getEndweeknumber() + ", " +
+                    "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 Semester resultSetToSemester(ResultSet rs)
+    {
+        try
+        {
+            rs.next();
+            return new Semester(
+                    rs.getInt("id"),
+                    rs.getInt("startweeknumber"),
+                    rs.getInt("endweeknumber"),
+                    rs.getString("name"),
+                    rs.getInt("startyear"),
+                    rs.getInt("endyear")
+            );
+        }
+        catch(Exception e)
+        {
+            return null;
+        }
+    }
+
+    /**
+    USER
+     */
+    //get a user object by mail and password from the database
+    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
+        {
+            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/Days/Day.java

@@ -0,0 +1,30 @@
+package com.example.backend.anwprj.Days;
+
+public class Day
+{
+    private int id;
+    private int dayinweek;
+    private int weekid;
+
+    public Day(int id, int dayinweek, int weekid)
+    {
+        this.id = id;
+        this.dayinweek = dayinweek;
+        this.weekid = weekid;
+    }
+
+    public int getId()
+    {
+        return id;
+    }
+
+    public int getDayinweek()
+    {
+        return dayinweek;
+    }
+
+    public int getWeekid()
+    {
+        return weekid;
+    }
+}

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

@@ -0,0 +1,58 @@
+package com.example.backend.anwprj.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/anwprj/Entries/Entry.java

@@ -0,0 +1,79 @@
+package com.example.backend.anwprj.Entries;
+
+//entry data class
+public class Entry
+{
+    private int id;
+    private int dayid;
+    private int usercreatedbyid;
+    private int timestart;
+    private int timeend;
+    private String info;
+    private int editable;
+
+    public Entry(int id, int dayid, int usercreatedbyid, int timestart, int timeend, String info, int editable)
+    {
+        this.id = id;
+        this.dayid = dayid;
+        this.usercreatedbyid = usercreatedbyid;
+        this.timestart = timestart;
+        this.timeend = timeend;
+        this.info = info;
+        this.editable = editable;
+    }
+
+    public int getId()
+    {
+        return id;
+    }
+
+    public int getDayid()
+    {
+        return dayid;
+    }
+
+    public int getUsercreatedbyid()
+    {
+        return usercreatedbyid;
+    }
+
+    public int getTimestart()
+    {
+        return timestart;
+    }
+
+    public int getTimeend()
+    {
+        return timeend;
+    }
+
+    public String getInfo()
+    {
+        return info;
+    }
+
+    public void setDayid(int dayid)
+    {
+        this.dayid = dayid;
+    }
+
+    public void setTimestart(int timestart)
+    {
+        this.timestart = timestart;
+    }
+
+    public void setTimeend(int timeend)
+    {
+        this.timeend = timeend;
+    }
+
+    public void setInfo(String info)
+    {
+        this.info = info;
+    }
+
+    public int getEditable()
+    {
+        return editable;
+    }
+}

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

@@ -0,0 +1,52 @@
+package com.example.backend.anwprj.Semesters;
+
+//semester data class
+public class Semester
+{
+    private int id;
+    private int startweeknumber;
+    private int endweeknumber;
+    private String name;
+    private int startyear;
+    private int endyear;
+
+    public Semester(int id, int startweeknumber, int endweeknumber, String name, int startyear, int endyear)
+    {
+        this.id = id;
+        this.startweeknumber = startweeknumber;
+        this.endweeknumber = endweeknumber;
+        this.name = name;
+        this.startyear = startyear;
+        this.endyear = endyear;
+    }
+
+    public int getId()
+    {
+        return id;
+    }
+
+    public int getStartweeknumber()
+    {
+        return startweeknumber;
+    }
+
+    public int getEndweeknumber()
+    {
+        return endweeknumber;
+    }
+
+    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

@@ -0,0 +1,57 @@
+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

@@ -0,0 +1,20 @@
+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

@@ -0,0 +1,68 @@
+package com.example.backend.anwprj.Users;
+
+import com.example.backend.anwprj.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 "";
+    }
+}

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

@@ -0,0 +1,60 @@
+package com.example.backend.anwprj.controller;
+
+import com.example.backend.anwprj.DataBaseHandler;
+import com.example.backend.anwprj.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="dayinweek") int dayInWeek,
+            @RequestParam(name="weeknumber") int weekNumber,
+            @RequestParam(name="semesterid") int semesterID)
+    {
+        User u = UserSessionIDHandler.getUserBySessionID(sessionID);
+
+        if(u != null)
+        {
+            Day d = db.getDay(dayInWeek, weekNumber, 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/anwprj/controller/EntriesController.java

@@ -0,0 +1,45 @@
+package com.example.backend.anwprj.controller;
+
+import com.example.backend.anwprj.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();
+    }
+
+    @CrossOrigin
+    @GetMapping("/entries")
+    public ResponseEntity<Entry[]> getEntries(
+            @RequestParam(name = "sessionid") String sessionID,
+            @RequestParam(name = "dayinweek") int dayinweek,
+            @RequestParam(name = "weeknumber") int weeknumber,
+            @RequestParam(name = "semesterid") int semesterid)
+    {
+        User user = UserSessionIDHandler.getUserBySessionID(sessionID);
+
+        if(user == null)
+        {
+            return new ResponseEntity<>(HttpStatus.NOT_FOUND);
+        }
+
+        Entry[] entries = db.getEntries(dayinweek, weeknumber, semesterid, user);
+        return new ResponseEntity<>(entries, HttpStatus.OK);
+    }
+
+    @CrossOrigin
+    @PostMapping("/entries")
+    public ResponseEntity<Entry[]> postEntries(@RequestBody Entry[] entries, @RequestParam(name="sessionid") String sessionID)
+    {
+        return null;
+    }
+}

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

@@ -0,0 +1,105 @@
+package com.example.backend.anwprj.controller;
+
+import com.example.backend.anwprj.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();
+    }
+
+    //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<>(s, HttpStatus.NOT_FOUND);
+        }
+
+
+        return new ResponseEntity<>(HttpStatus.FORBIDDEN);
+    }
+
+    //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
+    @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())
+        {
+            System.out.println(semester.getId());
+            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);
+    }
+}

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

@@ -0,0 +1,154 @@
+package com.example.backend.anwprj.controller;
+
+import com.example.backend.anwprj.Encryption.RSA;
+import com.example.backend.anwprj.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();
+    }
+
+
+    //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);
+    }
+
+    //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 = true;
+        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
+    @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
+    @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
+    @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/resources/application.properties

@@ -0,0 +1 @@
+

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

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

projekt/.gitignore

@@ -1,23 +0,0 @@
-# See https://help.github.com/articles/ignoring-files/ for more about ignoring files.
-
-# dependencies
-/node_modules
-/.pnp
-.pnp.js
-
-# testing
-/coverage
-
-# production
-/build
-
-# misc
-.DS_Store
-.env.local
-.env.development.local
-.env.test.local
-.env.production.local
-
-npm-debug.log*
-yarn-debug.log*
-yarn-error.log*

projekt/.idea/.gitignore

@@ -1,5 +0,0 @@
-# Default ignored files
-/shelf/
-/workspace.xml
-# Editor-based HTTP Client requests
-/httpRequests/

projekt/.idea/inspectionProfiles/Project_Default.xml

@@ -1,6 +0,0 @@
-<component name="InspectionProjectProfileManager">
-  <profile version="1.0">
-    <option name="myName" value="Project Default" />
-    <inspection_tool class="Eslint" enabled="true" level="WARNING" enabled_by_default="true" />
-  </profile>
-</component>

projekt/.idea/modules.xml

@@ -1,8 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="ProjectModuleManager">
-    <modules>
-      <module fileurl="file://$PROJECT_DIR$/.idea/projekt.iml" filepath="$PROJECT_DIR$/.idea/projekt.iml" />
-    </modules>
-  </component>
-</project>

projekt/.idea/projekt.iml

@@ -1,13 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<module type="WEB_MODULE" version="4">
-  <component name="NewModuleRootManager">
-    <content url="file://$MODULE_DIR$">
-      <excludeFolder url="file://$MODULE_DIR$/.tmp" />
-      <excludeFolder url="file://$MODULE_DIR$/build" />
-      <excludeFolder url="file://$MODULE_DIR$/temp" />
-      <excludeFolder url="file://$MODULE_DIR$/tmp" />
-    </content>
-    <orderEntry type="inheritedJdk" />
-    <orderEntry type="sourceFolder" forTests="false" />
-  </component>
-</module>

projekt/.idea/vcs.xml

@@ -1,6 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="VcsDirectoryMappings">
-    <mapping directory="$PROJECT_DIR$/.." vcs="Git" />
-  </component>
-</project>

projekt/README.md

@@ -1,70 +0,0 @@
-# Getting Started with Create React App
-
-This project was bootstrapped with [Create React App](https://github.com/facebook/create-react-app).
-
-## Available Scripts
-
-In the project directory, you can run:
-
-### `npm start`
-
-Runs the app in the development mode.\
-Open [http://localhost:3000](http://localhost:3000) to view it in your browser.
-
-The page will reload when you make changes.\
-You may also see any lint errors in the console.
-
-### `npm test`
-
-Launches the test runner in the interactive watch mode.\
-See the section about [running tests](https://facebook.github.io/create-react-app/docs/running-tests) for more information.
-
-### `npm run build`
-
-Builds the app for production to the `build` folder.\
-It correctly bundles React in production mode and optimizes the build for the best performance.
-
-The build is minified and the filenames include the hashes.\
-Your app is ready to be deployed!
-
-See the section about [deployment](https://facebook.github.io/create-react-app/docs/deployment) for more information.
-
-### `npm run eject`
-
-**Note: this is a one-way operation. Once you `eject`, you can't go back!**
-
-If you aren't satisfied with the build tool and configuration choices, you can `eject` at any time. This command will remove the single build dependency from your project.
-
-Instead, it will copy all the configuration files and the transitive dependencies (webpack, Babel, ESLint, etc) right into your project so you have full control over them. All of the commands except `eject` will still work, but they will point to the copied scripts so you can tweak them. At this point you're on your own.
-
-You don't have to ever use `eject`. The curated feature set is suitable for small and middle deployments, and you shouldn't feel obligated to use this feature. However we understand that this tool wouldn't be useful if you couldn't customize it when you are ready for it.
-
-## Learn More
-
-You can learn more in the [Create React App documentation](https://facebook.github.io/create-react-app/docs/getting-started).
-
-To learn React, check out the [React documentation](https://reactjs.org/).
-
-### Code Splitting
-
-This section has moved here: [https://facebook.github.io/create-react-app/docs/code-splitting](https://facebook.github.io/create-react-app/docs/code-splitting)
-
-### Analyzing the Bundle Size
-
-This section has moved here: [https://facebook.github.io/create-react-app/docs/analyzing-the-bundle-size](https://facebook.github.io/create-react-app/docs/analyzing-the-bundle-size)
-
-### Making a Progressive Web App
-
-This section has moved here: [https://facebook.github.io/create-react-app/docs/making-a-progressive-web-app](https://facebook.github.io/create-react-app/docs/making-a-progressive-web-app)
-
-### Advanced Configuration
-
-This section has moved here: [https://facebook.github.io/create-react-app/docs/advanced-configuration](https://facebook.github.io/create-react-app/docs/advanced-configuration)
-
-### Deployment
-
-This section has moved here: [https://facebook.github.io/create-react-app/docs/deployment](https://facebook.github.io/create-react-app/docs/deployment)
-
-### `npm run build` fails to minify
-
-This section has moved here: [https://facebook.github.io/create-react-app/docs/troubleshooting#npm-run-build-fails-to-minify](https://facebook.github.io/create-react-app/docs/troubleshooting#npm-run-build-fails-to-minify)

projekt/package.json

@@ -1,38 +0,0 @@
-{
-  "name": "projekt",
-  "version": "0.1.0",
-  "private": true,
-  "dependencies": {
-    "@testing-library/jest-dom": "^5.16.5",
-    "@testing-library/react": "^13.4.0",
-    "@testing-library/user-event": "^13.5.0",
-    "react": "^18.2.0",
-    "react-dom": "^18.2.0",
-    "react-scripts": "5.0.1",
-    "web-vitals": "^2.1.4"
-  },
-  "scripts": {
-    "start": "react-scripts start",
-    "build": "react-scripts build",
-    "test": "react-scripts test",
-    "eject": "react-scripts eject"
-  },
-  "eslintConfig": {
-    "extends": [
-      "react-app",
-      "react-app/jest"
-    ]
-  },
-  "browserslist": {
-    "production": [
-      ">0.2%",
-      "not dead",
-      "not op_mini all"
-    ],
-    "development": [
-      "last 1 chrome version",
-      "last 1 firefox version",
-      "last 1 safari version"
-    ]
-  }
-}

projekt/public/index.html

@@ -1,44 +0,0 @@
-<!DOCTYPE html>
-<html lang="en">
-  <head>
-    <meta charset="utf-8" />
-    <link rel="icon" href="%PUBLIC_URL%/favicon.ico" />
-    <meta name="viewport" content="width=device-width, initial-scale=1" />
-    <meta name="theme-color" content="#000000" />
-    <meta
-      name="description"
-      content="Web site created using create-react-app"
-    />
-    <link rel="apple-touch-icon" href="%PUBLIC_URL%/logo192.png" />
-    <!--
-      manifest.json provides metadata used when your web app is installed on a
-      user's mobile device or desktop. See https://developers.google.com/web/fundamentals/web-app-manifest/
-    -->
-    <link rel="manifest" href="%PUBLIC_URL%/manifest.json" />
-    <!--
-      Notice the use of %PUBLIC_URL% in the tags above.
-      It will be replaced with the URL of the `public` folder during the build.
-      Only files inside the `public` folder can be referenced from the HTML.
-
-      Unlike "/favicon.ico" or "favicon.ico", "%PUBLIC_URL%/favicon.ico" will
-      work correctly both with client-side routing and a non-root public URL.
-      Learn how to configure a non-root public URL by running `npm run build`.
-    -->
-    <title>React App</title>
-    <script src="../src/index.js"></script>
-  </head>
-  <body>
-    <noscript>You need to enable JavaScript to run this app.</noscript>
-    <div id="root"></div>
-    <!--
-      This HTML file is a template.
-      If you open it directly in the browser, you will see an empty page.
-
-      You can add webfonts, meta tags, or analytics to this file.
-      The build step will place the bundled scripts into the <body> tag.
-
-      To begin the development, run `npm start` or `yarn start`.
-      To create a production bundle, use `npm run build` or `yarn build`.
-    -->
-  </body>
-</html>

projekt/public/manifest.json

@@ -1,25 +0,0 @@
-{
-  "short_name": "React App",
-  "name": "Create React App Sample",
-  "icons": [
-    {
-      "src": "favicon.ico",
-      "sizes": "64x64 32x32 24x24 16x16",
-      "type": "image/x-icon"
-    },
-    {
-      "src": "logo192.png",
-      "type": "image/png",
-      "sizes": "192x192"
-    },
-    {
-      "src": "logo512.png",
-      "type": "image/png",
-      "sizes": "512x512"
-    }
-  ],
-  "start_url": ".",
-  "display": "standalone",
-  "theme_color": "#000000",
-  "background_color": "#ffffff"
-}

projekt/public/robots.txt

@@ -1,3 +0,0 @@
-# https://www.robotstxt.org/robotstxt.html
-User-agent: *
-Disallow:

projekt/src/App.css

@@ -1,57 +0,0 @@
-@tailwind base;
-@tailwind components;
-@tailwind utilities;
-
-.App {
-  text-align: center;
-}
-
-.App-logo {
-  height: 40vmin;
-  pointer-events: none;
-}
-
-@media (prefers-reduced-motion: no-preference) {
-  .App-logo {
-    animation: App-logo-spin infinite 20s linear;
-  }
-}
-
-.App-header {
-  background-color: #282c34;
-  min-height: 100vh;
-  display: flex;
-  flex-direction: column;
-  align-items: center;
-  justify-content: center;
-  font-size: calc(10px + 2vmin);
-  color: white;
-}
-
-.App-link {
-  color: #61dafb;
-}
-
-@keyframes App-logo-spin {
-  from {
-    transform: rotate(0deg);
-  }
-  to {
-    transform: rotate(360deg);
-  }
-}
-
-.container {
-  width: 100%;
-  display: flex;
-  flex-direction: row;
-  align-items: center;
-  justify-content: center;
-}
-
-.dateElement {
-  background-color: chartreuse;
-  border-radius: 5px;
-  border-width: 0px;
-  width: 200px;
-}

projekt/src/App.js

@@ -1,13 +0,0 @@
-import logo from './logo.svg';
-import './App.css';
-import DateElement from './DateElement'
-
-function App() {
-  return (
-    <div className="App">
-      <DateElement count={0} />
-    </div>
-  );
-}
-
-export default App;

projekt/src/App.test.js

@@ -1,8 +0,0 @@
-import { render, screen } from '@testing-library/react';
-import App from './App';
-
-test('renders learn react link', () => {
-  render(<App />);
-  const linkElement = screen.getByText(/learn react/i);
-  expect(linkElement).toBeInTheDocument();
-});

projekt/src/DateElement.jsx

@@ -1,25 +0,0 @@
-function addDays(date, days) {
-    let result = new Date(date);
-    result.setDate(result.getDate() + days);
-    return result;
-}
-
-export default function DateElement(props){
-    let startDate;
-    let endDate;
-    const currDate = new Date();
-
-    startDate = addDays(currDate, (currDate.getDay()-1)*-1); //berechnet den Montag der aktuellen Woche
-    startDate = addDays(startDate, props.count*7); //erhöht das Datum um 7 Tage für jede Woche, die weiter geklickt wurde.
-    endDate = addDays(startDate, 7);
-
-    const startDateString = `${startDate.getDate()}.${startDate.getMonth()+1}.${startDate.getFullYear()}`;
-    const endDateString = `${endDate.getDate()}.${endDate.getMonth()+1}.${endDate.getFullYear()}`;
-    return (
-        <>
-            <div className="container">
-                <p className="dateElement">{startDateString} - {endDateString}</p>
-            </div>
-        </>
-    );
-}

projekt/src/index.css

@@ -1,13 +0,0 @@
-body {
-  margin: 0;
-  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
-    'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue',
-    sans-serif;
-  -webkit-font-smoothing: antialiased;
-  -moz-osx-font-smoothing: grayscale;
-}
-
-code {
-  font-family: source-code-pro, Menlo, Monaco, Consolas, 'Courier New',
-    monospace;
-}

projekt/src/index.js

@@ -1,17 +0,0 @@
-import React from 'react';
-import ReactDOM from 'react-dom/client';
-import './index.css';
-import App from './App';
-import reportWebVitals from './reportWebVitals';
-
-const root = ReactDOM.createRoot(document.getElementById('root'));
-root.render(
-  <React.StrictMode>
-    <App />
-  </React.StrictMode>
-);
-
-// If you want to start measuring performance in your app, pass a function
-// to log results (for example: reportWebVitals(console.log))
-// or send to an analytics endpoint. Learn more: https://bit.ly/CRA-vitals
-reportWebVitals();

projekt/src/logo.svg

@@ -1 +0,0 @@
-<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 841.9 595.3"><g fill="#61DAFB"><path d="M666.3 296.5c0-32.5-40.7-63.3-103.1-82.4 14.4-63.6 8-114.2-20.2-130.4-6.5-3.8-14.1-5.6-22.4-5.6v22.3c4.6 0 8.3.9 11.4 2.6 13.6 7.8 19.5 37.5 14.9 75.7-1.1 9.4-2.9 19.3-5.1 29.4-19.6-4.8-41-8.5-63.5-10.9-13.5-18.5-27.5-35.3-41.6-50 32.6-30.3 63.2-46.9 84-46.9V78c-27.5 0-63.5 19.6-99.9 53.6-36.4-33.8-72.4-53.2-99.9-53.2v22.3c20.7 0 51.4 16.5 84 46.6-14 14.7-28 31.4-41.3 49.9-22.6 2.4-44 6.1-63.6 11-2.3-10-4-19.7-5.2-29-4.7-38.2 1.1-67.9 14.6-75.8 3-1.8 6.9-2.6 11.5-2.6V78.5c-8.4 0-16 1.8-22.6 5.6-28.1 16.2-34.4 66.7-19.9 130.1-62.2 19.2-102.7 49.9-102.7 82.3 0 32.5 40.7 63.3 103.1 82.4-14.4 63.6-8 114.2 20.2 130.4 6.5 3.8 14.1 5.6 22.5 5.6 27.5 0 63.5-19.6 99.9-53.6 36.4 33.8 72.4 53.2 99.9 53.2 8.4 0 16-1.8 22.6-5.6 28.1-16.2 34.4-66.7 19.9-130.1 62-19.1 102.5-49.9 102.5-82.3zm-130.2-66.7c-3.7 12.9-8.3 26.2-13.5 39.5-4.1-8-8.4-16-13.1-24-4.6-8-9.5-15.8-14.4-23.4 14.2 2.1 27.9 4.7 41 7.9zm-45.8 106.5c-7.8 13.5-15.8 26.3-24.1 38.2-14.9 1.3-30 2-45.2 2-15.1 0-30.2-.7-45-1.9-8.3-11.9-16.4-24.6-24.2-38-7.6-13.1-14.5-26.4-20.8-39.8 6.2-13.4 13.2-26.8 20.7-39.9 7.8-13.5 15.8-26.3 24.1-38.2 14.9-1.3 30-2 45.2-2 15.1 0 30.2.7 45 1.9 8.3 11.9 16.4 24.6 24.2 38 7.6 13.1 14.5 26.4 20.8 39.8-6.3 13.4-13.2 26.8-20.7 39.9zm32.3-13c5.4 13.4 10 26.8 13.8 39.8-13.1 3.2-26.9 5.9-41.2 8 4.9-7.7 9.8-15.6 14.4-23.7 4.6-8 8.9-16.1 13-24.1zM421.2 430c-9.3-9.6-18.6-20.3-27.8-32 9 .4 18.2.7 27.5.7 9.4 0 18.7-.2 27.8-.7-9 11.7-18.3 22.4-27.5 32zm-74.4-58.9c-14.2-2.1-27.9-4.7-41-7.9 3.7-12.9 8.3-26.2 13.5-39.5 4.1 8 8.4 16 13.1 24 4.7 8 9.5 15.8 14.4 23.4zM420.7 163c9.3 9.6 18.6 20.3 27.8 32-9-.4-18.2-.7-27.5-.7-9.4 0-18.7.2-27.8.7 9-11.7 18.3-22.4 27.5-32zm-74 58.9c-4.9 7.7-9.8 15.6-14.4 23.7-4.6 8-8.9 16-13 24-5.4-13.4-10-26.8-13.8-39.8 13.1-3.1 26.9-5.8 41.2-7.9zm-90.5 125.2c-35.4-15.1-58.3-34.9-58.3-50.6 0-15.7 22.9-35.6 58.3-50.6 8.6-3.7 18-7 27.7-10.1 5.7 19.6 13.2 40 22.5 60.9-9.2 20.8-16.6 41.1-22.2 60.6-9.9-3.1-19.3-6.5-28-10.2zM310 490c-13.6-7.8-19.5-37.5-14.9-75.7 1.1-9.4 2.9-19.3 5.1-29.4 19.6 4.8 41 8.5 63.5 10.9 13.5 18.5 27.5 35.3 41.6 50-32.6 30.3-63.2 46.9-84 46.9-4.5-.1-8.3-1-11.3-2.7zm237.2-76.2c4.7 38.2-1.1 67.9-14.6 75.8-3 1.8-6.9 2.6-11.5 2.6-20.7 0-51.4-16.5-84-46.6 14-14.7 28-31.4 41.3-49.9 22.6-2.4 44-6.1 63.6-11 2.3 10.1 4.1 19.8 5.2 29.1zm38.5-66.7c-8.6 3.7-18 7-27.7 10.1-5.7-19.6-13.2-40-22.5-60.9 9.2-20.8 16.6-41.1 22.2-60.6 9.9 3.1 19.3 6.5 28.1 10.2 35.4 15.1 58.3 34.9 58.3 50.6-.1 15.7-23 35.6-58.4 50.6zM320.8 78.4z"/><circle cx="420.9" cy="296.5" r="45.7"/><path d="M520.5 78.1z"/></g></svg>

projekt/src/reportWebVitals.js

@@ -1,13 +0,0 @@
-const reportWebVitals = onPerfEntry => {
-  if (onPerfEntry && onPerfEntry instanceof Function) {
-    import('web-vitals').then(({ getCLS, getFID, getFCP, getLCP, getTTFB }) => {
-      getCLS(onPerfEntry);
-      getFID(onPerfEntry);
-      getFCP(onPerfEntry);
-      getLCP(onPerfEntry);
-      getTTFB(onPerfEntry);
-    });
-  }
-};
-
-export default reportWebVitals;

projekt/src/setupTests.js

@@ -1,5 +0,0 @@
-// jest-dom adds custom jest matchers for asserting on DOM nodes.
-// allows you to do things like:
-// expect(element).toHaveTextContent(/react/i)
-// learn more: https://github.com/testing-library/jest-dom
-import '@testing-library/jest-dom';