Merge pull request 'rc' (#2) from dev into main

Reviewed-on: #2

.gitea/workflows/build.yml

@@ -0,0 +1,54 @@
+name: Build and Deploy Spring Boot Server
+
+on:
+  push:
+    branches:
+      - dev
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      # 1. Checkout the code
+      - name: Checkout code
+        uses: actions/checkout@v2
+
+      # 2. Set up Java and Maven
+      - name: Set up JDK (Eclipse Temurin)
+        uses: actions/setup-java@v3
+        with:
+          distribution: "temurin"
+          java-version: "17"
+          cache: maven
+
+      # 3. Verify Maven installation
+      - name: Install Maven
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y maven
+          mvn -version
+
+      # 4. Build the Spring Boot application
+      - name: Build Spring Boot Application
+        run: |
+          mvn clean package -DskipTests
+
+      # 5. Set up Docker
+      - name: Set up Docker
+        run: |
+          docker --version
+
+      # 6. Build the Docker image
+      - name: Build and Package Docker Image
+        run: |
+          docker build -t tea.zendric.de/cedric/xpensely-server:latest .
+
+      # 7. Docker login
+      - name: Login to Docker Registry
+        run: |
+          echo "${{ secrets.TEAPASSWORD }}" | docker login tea.zendric.de -u ${{ secrets.TEAUSER }} --password-stdin
+      # 8. Push Docker image
+      - name: Push the Docker Image to registry
+        run: |
+          docker push tea.zendric.de/cedric/xpensely-server:latest

.gitea/workflows/tag_release.yml

@@ -0,0 +1,84 @@
+name: Build and Deploy Versioned Spring Boot Server
+
+on:
+  push:
+    tags:
+      - "*" # Match all tags
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      # 1. Checkout the code
+      - name: Checkout code
+        uses: actions/checkout@v2
+
+      # 2. Set up Java and Maven
+      - name: Set up JDK (Eclipse Temurin)
+        uses: actions/setup-java@v3
+        with:
+          distribution: "temurin"
+          java-version: "17"
+          cache: maven
+
+      # 3. Verify Maven installation
+      - name: Install Maven
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y maven
+          mvn -version
+
+      # 4. Build the Spring Boot application
+      - name: Build Spring Boot Application
+        run: |
+          mvn clean package -DskipTests
+
+      # 5. Set up Docker
+      - name: Set up Docker
+        run: |
+          docker --version
+
+      # 6. Extract the tag name
+      - name: Extract Tag Version
+        id: extract_version
+        run: |
+          TAG_VERSION=$(echo "${GITHUB_REF}" | sed 's#refs/tags/##')
+          if [ -z "$TAG_VERSION" ]; then
+            echo "Error: TAG_VERSION is empty."
+            exit 1
+          fi
+          echo "TAG_VERSION=$TAG_VERSION" >> $GITHUB_ENV
+
+          # Extract major and minor versions
+          MAJOR_VERSION=$(echo "${TAG_VERSION}" | cut -d. -f1)
+          MINOR_VERSION=$(echo "${TAG_VERSION}" | cut -d. -f1,2)
+          echo "MAJOR_VERSION=$MAJOR_VERSION" >> $GITHUB_ENV
+          echo "MINOR_VERSION=$MINOR_VERSION" >> $GITHUB_ENV
+
+      # 7. Build the Docker image with the tag
+      - name: Build and Package Docker Image
+        run: |
+          docker build -t tea.zendric.de/cedric/xpensely-server:${{ env.TAG_VERSION }} .
+
+      # 8. Tag the image with Major Version (e.g., 0)
+      - name: Tag with Major Version
+        run: |
+          docker tag tea.zendric.de/cedric/xpensely-server:${{ env.TAG_VERSION }} tea.zendric.de/cedric/xpensely-server:${{ env.MAJOR_VERSION }}
+
+      # 9. Tag the image with Minor Version (e.g., 0.1)
+      - name: Tag with Minor Version
+        run: |
+          docker tag tea.zendric.de/cedric/xpensely-server:${{ env.TAG_VERSION }} tea.zendric.de/cedric/xpensely-server:${{ env.MINOR_VERSION }}
+
+      # 10. Docker login
+      - name: Login to Docker Registry
+        run: |
+          echo "${{ secrets.TEAPASSWORD }}" | docker login tea.zendric.de -u ${{ secrets.TEAUSER }} --password-stdin
+
+      # 11. Push the Docker images with the tags
+      - name: Push the Docker Image to registry
+        run: |
+          docker push tea.zendric.de/cedric/xpensely-server:${{ env.TAG_VERSION }}
+          docker push tea.zendric.de/cedric/xpensely-server:${{ env.MAJOR_VERSION }}
+          docker push tea.zendric.de/cedric/xpensely-server:${{ env.MINOR_VERSION }}

.gitignore

@@ -3,6 +3,7 @@ target/
 !.mvn/wrapper/maven-wrapper.jar
 !**/src/main/**/target/
 !**/src/test/**/target/
+.env
 
 ### STS ###
 .apt_generated

apiDesign.drawio

@@ -0,0 +1,199 @@
+<mxfile host="65bd71144e">
+    <diagram id="TZX9Tq6sZIlTxQ58HocZ" name="Page-1">
+        <mxGraphModel dx="826" dy="472" grid="1" gridSize="10" guides="1" tooltips="1" connect="1" arrows="1" fold="1" page="1" pageScale="1" pageWidth="850" pageHeight="1100" math="0" shadow="0">
+            <root>
+                <mxCell id="0"/>
+                <mxCell id="1" parent="0"/>
+                <mxCell id="2" value="ExpenseList" style="rounded=0;whiteSpace=wrap;html=1;fillColor=#647687;fontColor=#ffffff;strokeColor=#314354;" parent="1" vertex="1">
+                    <mxGeometry x="360" y="60" width="120" height="60" as="geometry"/>
+                </mxCell>
+                <mxCell id="5" value="add expense" style="ellipse;whiteSpace=wrap;html=1;fillColor=#fa6800;fontColor=#000000;strokeColor=#C73500;" parent="1" vertex="1">
+                    <mxGeometry x="550" y="190" width="90" height="50" as="geometry"/>
+                </mxCell>
+                <mxCell id="6" value="id" style="rounded=0;whiteSpace=wrap;html=1;fillColor=#76608a;fontColor=#ffffff;strokeColor=#432D57;" parent="1" vertex="1">
+                    <mxGeometry x="470" y="30" width="120" height="20" as="geometry"/>
+                </mxCell>
+                <mxCell id="7" value="owner" style="rounded=0;whiteSpace=wrap;html=1;fillColor=#76608a;fontColor=#ffffff;strokeColor=#432D57;" parent="1" vertex="1">
+                    <mxGeometry x="470" y="50" width="120" height="20" as="geometry"/>
+                </mxCell>
+                <mxCell id="8" value="name" style="rounded=0;whiteSpace=wrap;html=1;fillColor=#76608a;fontColor=#ffffff;strokeColor=#432D57;" parent="1" vertex="1">
+                    <mxGeometry x="470" y="70" width="120" height="20" as="geometry"/>
+                </mxCell>
+                <mxCell id="9" value="sharedWith" style="rounded=0;whiteSpace=wrap;html=1;fillColor=#76608a;fontColor=#ffffff;strokeColor=#432D57;" parent="1" vertex="1">
+                    <mxGeometry x="470" y="90" width="120" height="20" as="geometry"/>
+                </mxCell>
+                <mxCell id="10" value="expenses" style="rounded=0;whiteSpace=wrap;html=1;fillColor=#76608a;fontColor=#ffffff;strokeColor=#432D57;" parent="1" vertex="1">
+                    <mxGeometry x="470" y="110" width="120" height="20" as="geometry"/>
+                </mxCell>
+                <mxCell id="11" value="List&amp;lt;User&amp;gt;" style="rounded=0;whiteSpace=wrap;html=1;fillColor=#f0a30a;fontColor=#000000;strokeColor=#BD7000;" parent="1" vertex="1">
+                    <mxGeometry x="590" y="90" width="120" height="20" as="geometry"/>
+                </mxCell>
+                <mxCell id="13" value="List&amp;lt;Expense&amp;gt;" style="rounded=0;whiteSpace=wrap;html=1;fillColor=#f0a30a;fontColor=#000000;strokeColor=#BD7000;" parent="1" vertex="1">
+                    <mxGeometry x="590" y="110" width="120" height="20" as="geometry"/>
+                </mxCell>
+                <mxCell id="14" value="String" style="rounded=0;whiteSpace=wrap;html=1;fillColor=#f0a30a;fontColor=#000000;strokeColor=#BD7000;" parent="1" vertex="1">
+                    <mxGeometry x="590" y="70" width="120" height="20" as="geometry"/>
+                </mxCell>
+                <mxCell id="15" value="User" style="rounded=0;whiteSpace=wrap;html=1;fillColor=#f0a30a;fontColor=#000000;strokeColor=#BD7000;" parent="1" vertex="1">
+                    <mxGeometry x="590" y="50" width="120" height="20" as="geometry"/>
+                </mxCell>
+                <mxCell id="16" value="Long" style="rounded=0;whiteSpace=wrap;html=1;fillColor=#f0a30a;fontColor=#000000;strokeColor=#BD7000;" parent="1" vertex="1">
+                    <mxGeometry x="590" y="30" width="120" height="20" as="geometry"/>
+                </mxCell>
+                <mxCell id="17" value="remove expense" style="ellipse;whiteSpace=wrap;html=1;fillColor=#fa6800;fontColor=#000000;strokeColor=#C73500;" parent="1" vertex="1">
+                    <mxGeometry x="670" y="190" width="90" height="50" as="geometry"/>
+                </mxCell>
+                <mxCell id="19" style="edgeStyle=none;html=1;" parent="1" source="18" target="5" edge="1">
+                    <mxGeometry relative="1" as="geometry"/>
+                </mxCell>
+                <mxCell id="20" style="edgeStyle=none;html=1;entryX=0;entryY=1;entryDx=0;entryDy=0;" parent="1" source="18" target="17" edge="1">
+                    <mxGeometry relative="1" as="geometry"/>
+                </mxCell>
+                <mxCell id="22" style="edgeStyle=none;html=1;" parent="1" source="18" target="21" edge="1">
+                    <mxGeometry relative="1" as="geometry"/>
+                </mxCell>
+                <mxCell id="24" style="edgeStyle=none;html=1;" parent="1" source="18" target="23" edge="1">
+                    <mxGeometry relative="1" as="geometry"/>
+                </mxCell>
+                <mxCell id="26" style="edgeStyle=none;html=1;entryX=1;entryY=1;entryDx=0;entryDy=0;" parent="1" source="18" target="25" edge="1">
+                    <mxGeometry relative="1" as="geometry"/>
+                </mxCell>
+                <mxCell id="28" style="edgeStyle=none;html=1;" parent="1" source="18" target="27" edge="1">
+                    <mxGeometry relative="1" as="geometry"/>
+                </mxCell>
+                <mxCell id="18" value="ExpenseList" style="rounded=0;whiteSpace=wrap;html=1;fillColor=#647687;fontColor=#ffffff;strokeColor=#314354;" parent="1" vertex="1">
+                    <mxGeometry x="540" y="270" width="120" height="60" as="geometry"/>
+                </mxCell>
+                <mxCell id="21" value="add User" style="ellipse;whiteSpace=wrap;html=1;fillColor=#fa6800;fontColor=#000000;strokeColor=#C73500;" parent="1" vertex="1">
+                    <mxGeometry x="740" y="270" width="90" height="50" as="geometry"/>
+                </mxCell>
+                <mxCell id="23" value="remove User" style="ellipse;whiteSpace=wrap;html=1;fillColor=#fa6800;fontColor=#000000;strokeColor=#C73500;" parent="1" vertex="1">
+                    <mxGeometry x="720" y="350" width="90" height="50" as="geometry"/>
+                </mxCell>
+                <mxCell id="25" value="update expense" style="ellipse;whiteSpace=wrap;html=1;fillColor=#fa6800;fontColor=#000000;strokeColor=#C73500;" parent="1" vertex="1">
+                    <mxGeometry x="440" y="190" width="90" height="50" as="geometry"/>
+                </mxCell>
+                <mxCell id="27" value="update name" style="ellipse;whiteSpace=wrap;html=1;fillColor=#fa6800;fontColor=#000000;strokeColor=#C73500;" parent="1" vertex="1">
+                    <mxGeometry x="380" y="275" width="90" height="50" as="geometry"/>
+                </mxCell>
+                <mxCell id="29" value="&lt;h1&gt;ExpenseList&lt;/h1&gt;&lt;div&gt;ExpenseList:&lt;/div&gt;&lt;div&gt;&lt;br&gt;&lt;/div&gt;&lt;div&gt;- create a List&lt;/div&gt;&lt;div&gt;- share a List&lt;/div&gt;&lt;div&gt;- handle Expenses&lt;/div&gt;&lt;div&gt;&lt;br&gt;&lt;/div&gt;&lt;div&gt;Expense:&lt;/div&gt;&lt;div&gt;- create a new Expense&lt;/div&gt;&lt;div&gt;- update an Expense&lt;/div&gt;&lt;div&gt;- delete an Expense&lt;/div&gt;&lt;div&gt;&lt;br&gt;&lt;/div&gt;&lt;div&gt;User:&lt;br&gt;- add User&lt;/div&gt;&lt;div&gt;-&amp;nbsp;&lt;/div&gt;&lt;div&gt;&lt;br&gt;&lt;/div&gt;&lt;div&gt;&lt;br&gt;&lt;/div&gt;&lt;div&gt;&lt;br&gt;&lt;/div&gt;&lt;div&gt;&amp;nbsp;&lt;/div&gt;" style="text;html=1;strokeColor=none;fillColor=none;spacing=5;spacingTop=-20;whiteSpace=wrap;overflow=hidden;rounded=0;" parent="1" vertex="1">
+                    <mxGeometry x="20" y="10" width="190" height="270" as="geometry"/>
+                </mxCell>
+                <mxCell id="30" value="Expense" style="rounded=0;whiteSpace=wrap;html=1;fillColor=#647687;fontColor=#ffffff;strokeColor=#314354;" parent="1" vertex="1">
+                    <mxGeometry x="370" y="510" width="120" height="60" as="geometry"/>
+                </mxCell>
+                <mxCell id="31" value="id" style="rounded=0;whiteSpace=wrap;html=1;fillColor=#76608a;fontColor=#ffffff;strokeColor=#432D57;" parent="1" vertex="1">
+                    <mxGeometry x="480" y="480" width="120" height="20" as="geometry"/>
+                </mxCell>
+                <mxCell id="32" value="owner" style="rounded=0;whiteSpace=wrap;html=1;fillColor=#76608a;fontColor=#ffffff;strokeColor=#432D57;" parent="1" vertex="1">
+                    <mxGeometry x="480" y="500" width="120" height="20" as="geometry"/>
+                </mxCell>
+                <mxCell id="33" value="name" style="rounded=0;whiteSpace=wrap;html=1;fillColor=#76608a;fontColor=#ffffff;strokeColor=#432D57;" parent="1" vertex="1">
+                    <mxGeometry x="480" y="520" width="120" height="20" as="geometry"/>
+                </mxCell>
+                <mxCell id="34" value="amount" style="rounded=0;whiteSpace=wrap;html=1;fillColor=#76608a;fontColor=#ffffff;strokeColor=#432D57;" parent="1" vertex="1">
+                    <mxGeometry x="480" y="540" width="120" height="20" as="geometry"/>
+                </mxCell>
+                <mxCell id="35" value="deviation" style="rounded=0;whiteSpace=wrap;html=1;fillColor=#76608a;fontColor=#ffffff;strokeColor=#432D57;" parent="1" vertex="1">
+                    <mxGeometry x="480" y="560" width="120" height="20" as="geometry"/>
+                </mxCell>
+                <mxCell id="36" value="Double" style="rounded=0;whiteSpace=wrap;html=1;fillColor=#f0a30a;fontColor=#000000;strokeColor=#BD7000;" parent="1" vertex="1">
+                    <mxGeometry x="600" y="540" width="120" height="20" as="geometry"/>
+                </mxCell>
+                <mxCell id="37" value="Double" style="rounded=0;whiteSpace=wrap;html=1;fillColor=#f0a30a;fontColor=#000000;strokeColor=#BD7000;" parent="1" vertex="1">
+                    <mxGeometry x="600" y="560" width="120" height="20" as="geometry"/>
+                </mxCell>
+                <mxCell id="38" value="String" style="rounded=0;whiteSpace=wrap;html=1;fillColor=#f0a30a;fontColor=#000000;strokeColor=#BD7000;" parent="1" vertex="1">
+                    <mxGeometry x="600" y="520" width="120" height="20" as="geometry"/>
+                </mxCell>
+                <mxCell id="39" value="User" style="rounded=0;whiteSpace=wrap;html=1;fillColor=#f0a30a;fontColor=#000000;strokeColor=#BD7000;" parent="1" vertex="1">
+                    <mxGeometry x="600" y="500" width="120" height="20" as="geometry"/>
+                </mxCell>
+                <mxCell id="40" value="Long" style="rounded=0;whiteSpace=wrap;html=1;fillColor=#f0a30a;fontColor=#000000;strokeColor=#BD7000;" parent="1" vertex="1">
+                    <mxGeometry x="600" y="480" width="120" height="20" as="geometry"/>
+                </mxCell>
+                <mxCell id="41" value="date" style="rounded=0;whiteSpace=wrap;html=1;fillColor=#76608a;fontColor=#ffffff;strokeColor=#432D57;" parent="1" vertex="1">
+                    <mxGeometry x="480" y="580" width="120" height="20" as="geometry"/>
+                </mxCell>
+                <mxCell id="42" value="Time" style="rounded=0;whiteSpace=wrap;html=1;fillColor=#f0a30a;fontColor=#000000;strokeColor=#BD7000;" parent="1" vertex="1">
+                    <mxGeometry x="600" y="580" width="120" height="20" as="geometry"/>
+                </mxCell>
+                <mxCell id="43" value="expenseList" style="rounded=0;whiteSpace=wrap;html=1;fillColor=#76608a;fontColor=#ffffff;strokeColor=#432D57;" parent="1" vertex="1">
+                    <mxGeometry x="480" y="600" width="120" height="20" as="geometry"/>
+                </mxCell>
+                <mxCell id="44" value="ExpenseList" style="rounded=0;whiteSpace=wrap;html=1;fillColor=#f0a30a;fontColor=#000000;strokeColor=#BD7000;" parent="1" vertex="1">
+                    <mxGeometry x="600" y="600" width="120" height="20" as="geometry"/>
+                </mxCell>
+                <mxCell id="45" value="" style="rounded=0;whiteSpace=wrap;html=1;" parent="1" vertex="1">
+                    <mxGeometry x="900" y="40" width="200" height="320" as="geometry"/>
+                </mxCell>
+                <mxCell id="46" value="ExpenseList" style="rounded=1;whiteSpace=wrap;html=1;" parent="1" vertex="1">
+                    <mxGeometry x="910" y="50" width="120" height="40" as="geometry"/>
+                </mxCell>
+                <mxCell id="47" value="ExpenseList" style="rounded=1;whiteSpace=wrap;html=1;" parent="1" vertex="1">
+                    <mxGeometry x="910" y="100" width="120" height="40" as="geometry"/>
+                </mxCell>
+                <mxCell id="48" value="+" style="rounded=1;whiteSpace=wrap;html=1;" parent="1" vertex="1">
+                    <mxGeometry x="910" y="150" width="30" height="30" as="geometry"/>
+                </mxCell>
+                <mxCell id="50" value="Home" style="text;html=1;strokeColor=none;fillColor=none;align=center;verticalAlign=middle;whiteSpace=wrap;rounded=0;" parent="1" vertex="1">
+                    <mxGeometry x="970" y="10" width="60" height="30" as="geometry"/>
+                </mxCell>
+                <mxCell id="51" value="" style="rounded=0;whiteSpace=wrap;html=1;" parent="1" vertex="1">
+                    <mxGeometry x="1140" y="40" width="200" height="320" as="geometry"/>
+                </mxCell>
+                <mxCell id="52" value="ExpenseList" style="rounded=1;whiteSpace=wrap;html=1;" parent="1" vertex="1">
+                    <mxGeometry x="1180" y="50" width="120" height="20" as="geometry"/>
+                </mxCell>
+                <mxCell id="53" value="&lt;font style=&quot;font-size: 8px;&quot;&gt;24.12.24 ; Expense ; 24,12 €&lt;/font&gt;" style="rounded=1;whiteSpace=wrap;html=1;fillColor=#76608a;fontColor=#ffffff;strokeColor=#432D57;" parent="1" vertex="1">
+                    <mxGeometry x="1150" y="90" width="120" height="20" as="geometry"/>
+                </mxCell>
+                <mxCell id="54" value="+" style="rounded=1;whiteSpace=wrap;html=1;" parent="1" vertex="1">
+                    <mxGeometry x="1300" y="285" width="30" height="30" as="geometry"/>
+                </mxCell>
+                <mxCell id="55" value="ExpenseList" style="text;html=1;strokeColor=none;fillColor=none;align=center;verticalAlign=middle;whiteSpace=wrap;rounded=0;" parent="1" vertex="1">
+                    <mxGeometry x="1210" y="10" width="60" height="30" as="geometry"/>
+                </mxCell>
+                <mxCell id="58" value="&lt;span style=&quot;color: rgb(255, 255, 255); font-size: 8px;&quot;&gt;24.12.24 ; Expense ; 24,12 €&lt;/span&gt;" style="rounded=1;whiteSpace=wrap;html=1;fillColor=#f0a30a;fontColor=#000000;strokeColor=#BD7000;" parent="1" vertex="1">
+                    <mxGeometry x="1210" y="115" width="120" height="20" as="geometry"/>
+                </mxCell>
+                <mxCell id="59" value="&lt;span style=&quot;font-size: 8px;&quot;&gt;24.12.24 ; Expense ; 24,12 €&lt;/span&gt;" style="rounded=1;whiteSpace=wrap;html=1;fillColor=#76608a;fontColor=#ffffff;strokeColor=#432D57;" parent="1" vertex="1">
+                    <mxGeometry x="1150" y="140" width="120" height="20" as="geometry"/>
+                </mxCell>
+                <mxCell id="60" value="" style="rounded=0;whiteSpace=wrap;html=1;" parent="1" vertex="1">
+                    <mxGeometry x="1390" y="40" width="200" height="320" as="geometry"/>
+                </mxCell>
+                <mxCell id="61" value="ExpenseList" style="rounded=1;whiteSpace=wrap;html=1;" parent="1" vertex="1">
+                    <mxGeometry x="1430" y="50" width="120" height="20" as="geometry"/>
+                </mxCell>
+                <mxCell id="62" value="&lt;font style=&quot;font-size: 8px;&quot;&gt;24.12.24 ; Expense ; 24,12 €&lt;/font&gt;" style="rounded=1;whiteSpace=wrap;html=1;fillColor=#76608a;fontColor=#ffffff;strokeColor=#432D57;" parent="1" vertex="1">
+                    <mxGeometry x="1430" y="80" width="120" height="20" as="geometry"/>
+                </mxCell>
+                <mxCell id="63" value="+" style="rounded=1;whiteSpace=wrap;html=1;" parent="1" vertex="1">
+                    <mxGeometry x="1540" y="320" width="30" height="30" as="geometry"/>
+                </mxCell>
+                <mxCell id="64" value="Update Expense" style="text;html=1;strokeColor=none;fillColor=none;align=center;verticalAlign=middle;whiteSpace=wrap;rounded=0;" parent="1" vertex="1">
+                    <mxGeometry x="1430" y="10" width="120" height="30" as="geometry"/>
+                </mxCell>
+                <mxCell id="67" value="&lt;span style=&quot;font-size: 8px;&quot;&gt;Amount : 24,12 €&lt;br&gt;Title: Expense&lt;br&gt;Date: 24.12.24&lt;br&gt;From: Jessi&lt;br&gt;Deviation: 0 €&lt;/span&gt;" style="rounded=1;whiteSpace=wrap;html=1;fillColor=#76608a;fontColor=#ffffff;strokeColor=#432D57;align=left;spacingLeft=12;" parent="1" vertex="1">
+                    <mxGeometry x="1405" y="110" width="170" height="80" as="geometry"/>
+                </mxCell>
+                <mxCell id="68" value="&lt;span style=&quot;color: rgb(255, 255, 255); font-size: 8px;&quot;&gt;Total: 24,12 €&lt;/span&gt;" style="rounded=1;whiteSpace=wrap;html=1;fillColor=#76608a;fontColor=#ffffff;strokeColor=#432D57;" parent="1" vertex="1">
+                    <mxGeometry x="1150" y="290" width="120" height="20" as="geometry"/>
+                </mxCell>
+                <mxCell id="70" value="" style="endArrow=none;html=1;fontSize=8;entryX=1;entryY=0.75;entryDx=0;entryDy=0;" parent="1" edge="1">
+                    <mxGeometry width="50" height="50" relative="1" as="geometry">
+                        <mxPoint x="1140" y="325" as="sourcePoint"/>
+                        <mxPoint x="1340" y="325" as="targetPoint"/>
+                    </mxGeometry>
+                </mxCell>
+                <mxCell id="72" value="&lt;span style=&quot;color: rgb(255, 255, 255); font-size: 8px;&quot;&gt;24.12.24 ; Expense ; 24,12 €&lt;/span&gt;" style="rounded=1;whiteSpace=wrap;html=1;fillColor=#f0a30a;fontColor=#000000;strokeColor=#BD7000;" parent="1" vertex="1">
+                    <mxGeometry x="1460" y="200" width="120" height="20" as="geometry"/>
+                </mxCell>
+                <mxCell id="73" value="&lt;span style=&quot;font-size: 8px;&quot;&gt;24.12.24 ; Expense ; 24,12 €&lt;/span&gt;" style="rounded=1;whiteSpace=wrap;html=1;fillColor=#76608a;fontColor=#ffffff;strokeColor=#432D57;" parent="1" vertex="1">
+                    <mxGeometry x="1399" y="226" width="120" height="20" as="geometry"/>
+                </mxCell>
+            </root>
+        </mxGraphModel>
+    </diagram>
+</mxfile>

docker-compose.yml

@@ -0,0 +1,48 @@
+version: "3.8"
+services:
+  xpensely-server:
+    image: tea.zendric.de/cedric/xpensely-server:0
+    labels:
+      net.unraid.docker.icon: https://tea.zendric.de/Cedric/XpenselyServer/raw/branch/main/src/main/resources/static/xpensely_icon_white.png
+    container_name: xpensely-server
+    ports:
+      - 3636:8080
+    environment:
+      GOOGLE_CLIENT_ID: ${GOOGLE_CLIENT_ID}
+      GOOGLE_CLIENT_SECRET: ${GOOGLE_CLIENT_SECRET}
+      DB_PORT: 5432
+      DB_P_NAME: xpensely
+      DB_USERNAME: ${DB_USERNAME}
+      DB_PASSWORD: ${DB_PASSWORD}
+    depends_on:
+      postgresdb:
+        condition: service_healthy
+    networks:
+      - xpensely-network
+  postgresdb:
+    labels:
+      net.unraid.docker.icon: https://raw.githubusercontent.com/docker-library/docs/01c12653951b2fe592c1f93a13b4e289ada0e3a1/postgres/logo.png
+    image: postgres:14
+    container_name: postgresdb
+    ports:
+      - 5432:5432
+    environment:
+      POSTGRES_DB: xpensely
+      POSTGRES_USER: ${DB_USERNAME}
+      POSTGRES_PASSWORD: ${DB_PASSWORD}
+    networks:
+      - xpensely-network
+    volumes:
+      - db_data:/var/lib/postgresql/data
+    restart: unless-stopped
+    healthcheck:
+      test:
+        - CMD-SHELL
+        - pg_isready -U ${DB_USERNAME} -d xpensely
+      interval: 10s
+      timeout: 5s
+      retries: 5
+volumes:
+  db_data: null
+networks:
+  xpensely-network: null

dockerfile

@@ -0,0 +1,7 @@
+FROM openjdk:17-jdk-slim
+
+COPY ./target/*.jar app.jar
+
+EXPOSE 8080
+
+ENTRYPOINT ["java", "-jar", "app.jar"]

pom.xml

@@ -10,9 +10,9 @@
 	</parent>
 	<groupId>de.zendric.app</groupId>
 	<artifactId>XpenselyServer</artifactId>
-	<version>0.0.1-SNAPSHOT</version>
+	<version>1.0.0</version>
 	<name>XpenselyServer</name>
-	<description>Demo project for Spring Boot</description>
+	<description>XpenselyServer used to handle the Xpensely App</description>
 	<url/>
 	<licenses>
 		<license/>
@@ -38,11 +38,18 @@
 			<groupId>org.springframework.boot</groupId>
 			<artifactId>spring-boot-starter-security</artifactId>
 		</dependency>
+		<dependency>
+        	<groupId>org.springframework.boot</groupId>
+        	<artifactId>spring-boot-starter-oauth2-resource-server</artifactId>
+    	</dependency>
+			<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-oauth2-client</artifactId>
+		</dependency>
 		<dependency>
 			<groupId>org.springframework.boot</groupId>
 			<artifactId>spring-boot-starter-web</artifactId>
 		</dependency>
-
 		<dependency>
 			<groupId>org.springframework.boot</groupId>
 			<artifactId>spring-boot-devtools</artifactId>

src/main/java/de/zendric/app/xpensely_server/XpenselyServerApplication.java

@@ -1,9 +1,11 @@
-package de.zendric.app.XpenselyServer;
+package de.zendric.app.xpensely_server;
 
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.scheduling.annotation.EnableScheduling;
 
 @SpringBootApplication
+@EnableScheduling
 public class XpenselyServerApplication {
 
 	public static void main(String[] args) {

src/main/java/de/zendric/app/xpensely_server/controller/AppUserController.java

@@ -0,0 +1,73 @@
+package de.zendric.app.xpensely_server.controller;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.DeleteMapping;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+
+import de.zendric.app.xpensely_server.model.AppUser;
+import de.zendric.app.xpensely_server.model.AppUserCreateRequest;
+import de.zendric.app.xpensely_server.model.UsernameAlreadyExistsException;
+import de.zendric.app.xpensely_server.services.UserService;
+
+@RestController
+@RequestMapping("/api/users")
+public class AppUserController {
+
+    private UserService userService;
+
+    @Autowired
+    public AppUserController(UserService userService) {
+        this.userService = userService;
+    }
+
+    @GetMapping
+    public AppUser getUser(@RequestParam Long id) {
+        return userService.getUser(id);
+    }
+
+    @GetMapping("/byName")
+    public AppUser getUserByName(@RequestParam String username) {
+        return userService.getUserByName(username);
+    }
+
+    @GetMapping("/byGoogleId")
+    public ResponseEntity<AppUser> getUserByGoogleId(@RequestParam String id) {
+        try {
+            AppUser userByGoogleId = userService.getUserByGoogleId(id);
+            return new ResponseEntity<>(userByGoogleId, HttpStatus.OK);
+
+        } catch (IllegalArgumentException e) {
+            return new ResponseEntity<>(null, HttpStatus.BAD_REQUEST);
+        } catch (Exception e) {
+            return new ResponseEntity<>(null, HttpStatus.INTERNAL_SERVER_ERROR);
+        }
+    }
+
+    @PostMapping("/createUser")
+    public ResponseEntity<AppUser> createUser(@RequestBody AppUserCreateRequest userRequest) {
+        try {
+            AppUser convertedUser = userRequest.convertToAppUser();
+
+            AppUser nUser = userService.createUser(convertedUser);
+            return new ResponseEntity<>(nUser, HttpStatus.CREATED);
+        } catch (UsernameAlreadyExistsException e) {
+            return new ResponseEntity<>(null, HttpStatus.CONFLICT);
+        } catch (Exception e) {
+            return new ResponseEntity<>(null, HttpStatus.BAD_REQUEST);
+        }
+
+    }
+
+    @DeleteMapping
+    public String deleteUser(@RequestParam Long id) {
+        AppUser user = userService.deleteUserById(id);
+        return "User deleted : " + user.getUsername();
+    }
+}

src/main/java/de/zendric/app/xpensely_server/controller/ExpenseListController.java

@@ -0,0 +1,212 @@
+package de.zendric.app.xpensely_server.controller;
+
+import java.time.LocalDateTime;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Optional;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.DeleteMapping;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.PutMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+
+import de.zendric.app.xpensely_server.model.AppUser;
+import de.zendric.app.xpensely_server.model.Expense;
+import de.zendric.app.xpensely_server.model.ExpenseChangeRequest;
+import de.zendric.app.xpensely_server.model.ExpenseInput;
+import de.zendric.app.xpensely_server.model.ExpenseList;
+import de.zendric.app.xpensely_server.model.InviteRequest;
+import de.zendric.app.xpensely_server.services.ExpenseListService;
+import de.zendric.app.xpensely_server.services.UserService;
+
+@RestController
+@RequestMapping("/api/expenselist")
+class ExpenseListController {
+
+    private ExpenseListService expenseListService;
+    private UserService userService;
+
+    @Autowired
+    public ExpenseListController(ExpenseListService expenseListService, UserService userService) {
+        this.expenseListService = expenseListService;
+        this.userService = userService;
+    }
+
+    @GetMapping("/all")
+    public ResponseEntity<List<ExpenseList>> getAll() {
+        try {
+            List<ExpenseList> items = new ArrayList<>();
+
+            expenseListService.findAll().forEach(items::add);
+
+            if (items.isEmpty())
+                return new ResponseEntity<>(HttpStatus.NO_CONTENT);
+
+            return new ResponseEntity<>(items, HttpStatus.OK);
+        } catch (Exception e) {
+            return new ResponseEntity<>(null, HttpStatus.INTERNAL_SERVER_ERROR);
+        }
+    }
+
+    @GetMapping("/byUser")
+    public ResponseEntity<List<ExpenseList>> getByUser(@RequestParam Long userId) {
+        try {
+            List<ExpenseList> items = expenseListService.findByUserId(userId);
+
+            if (items.isEmpty())
+                return new ResponseEntity<>(HttpStatus.NO_CONTENT);
+
+            return new ResponseEntity<>(items, HttpStatus.OK);
+        } catch (Exception e) {
+            return new ResponseEntity<>(null, HttpStatus.INTERNAL_SERVER_ERROR);
+        }
+    }
+
+    @GetMapping("/byUsername")
+    public ResponseEntity<List<ExpenseList>> getByUser(@RequestParam String username) {
+        try {
+            List<ExpenseList> items = expenseListService.findByUsername(username);
+
+            if (items.isEmpty())
+                return new ResponseEntity<>(HttpStatus.NO_CONTENT);
+
+            return new ResponseEntity<>(items, HttpStatus.OK);
+        } catch (Exception e) {
+            return new ResponseEntity<>(null, HttpStatus.INTERNAL_SERVER_ERROR);
+        }
+    }
+
+    @GetMapping("/byId")
+    public ResponseEntity<ExpenseList> getById(@RequestParam Long id) {
+        Optional<ExpenseList> existingItemOptional = expenseListService.findById(id);
+
+        if (existingItemOptional.isPresent()) {
+            return new ResponseEntity<>(existingItemOptional.get(), HttpStatus.OK);
+        } else {
+            return new ResponseEntity<>(HttpStatus.NOT_FOUND);
+        }
+    }
+
+    @PostMapping("/create")
+    public ResponseEntity<ExpenseList> create(@RequestBody ExpenseList expenseList) {
+        try {
+            if (expenseList.getOwner() != null) {
+                AppUser existingOwner = userService.getUser(expenseList.getOwner().getId());
+                if (existingOwner == null) {
+                    throw new IllegalArgumentException("Owner does not exist.");
+                }
+                expenseList.setOwner(existingOwner);
+            } else {
+                throw new IllegalArgumentException("Owner is required.");
+            }
+
+            expenseList.setSharedWith(null);
+
+            ExpenseList savedItem = expenseListService.createList(expenseList);
+            return new ResponseEntity<>(savedItem, HttpStatus.CREATED);
+        } catch (Exception e) {
+            e.printStackTrace();
+            return new ResponseEntity<>(null, HttpStatus.EXPECTATION_FAILED);
+        }
+    }
+
+    @DeleteMapping("{id}")
+    public ResponseEntity<HttpStatus> delete(@PathVariable("id") Long id) {
+        try {
+            expenseListService.deleteById(id);
+            return new ResponseEntity<>(HttpStatus.NO_CONTENT);
+        } catch (Exception e) {
+            return new ResponseEntity<>(HttpStatus.EXPECTATION_FAILED);
+        }
+    }
+
+    @PostMapping("/{id}/add")
+    public ResponseEntity<Expense> addExpenseToList(
+            @PathVariable("id") Long expenseListId,
+            @RequestBody ExpenseInput expenseInput) {
+        try {
+            AppUser expenseOwner = userService.getUserByName(expenseInput.getOwner());
+            Expense expense = expenseInput.convertToExpense(expenseOwner.getId());
+
+            Expense addedExpense = expenseListService.addExpenseToList(expenseListId, expense);
+            return new ResponseEntity<>(addedExpense, HttpStatus.CREATED);
+        } catch (Exception e) {
+            return new ResponseEntity<>(null, HttpStatus.INTERNAL_SERVER_ERROR);
+        }
+    }
+
+    @PutMapping("/{id}/update")
+    public ResponseEntity<Expense> updateExpenseInList(
+            @PathVariable("id") Long expenseListId,
+            @RequestBody ExpenseChangeRequest expenseChangeRequest) {
+        try {
+            AppUser expenseOwner = userService.getUserByName(expenseChangeRequest.getOwnerName());
+            Optional<ExpenseList> expenseList = expenseListService.findById(expenseListId);
+            if (expenseList.isPresent()) {
+                Expense expense = expenseChangeRequest.convertToExpense(expenseOwner.getId(), expenseList.get());
+
+                Expense addedExpense = expenseListService.updateExpense(expenseListId, expense);
+                return new ResponseEntity<>(addedExpense, HttpStatus.CREATED);
+            }
+            return new ResponseEntity<>(null, HttpStatus.BAD_REQUEST);
+
+        } catch (Exception e) {
+            return new ResponseEntity<>(null, HttpStatus.BAD_REQUEST);
+        }
+    }
+
+    @DeleteMapping("/{id}/delete")
+    public ResponseEntity<Expense> deleteExpenseFromList(
+            @PathVariable("id") Long expenseListId,
+            @RequestParam("expenseId") Long expenseId) {
+        try {
+            expenseListService.deleteExpenseFromList(expenseListId, expenseId);
+            return new ResponseEntity<>(HttpStatus.NO_CONTENT);
+        } catch (Exception e) {
+            return new ResponseEntity<>(null, HttpStatus.EXPECTATION_FAILED);
+        }
+    }
+
+    @PostMapping("/{listId}/invite")
+    public ResponseEntity<String> generateInvite(@PathVariable Long listId) {
+        String inviteCode = expenseListService.generateInviteCode(listId);
+        return ResponseEntity.ok(inviteCode);
+    }
+
+    @PostMapping("/accept-invite")
+    public ResponseEntity<?> acceptInvite(@RequestBody InviteRequest inviteRequest) {
+        ExpenseList list = expenseListService.findByInviteCode(inviteRequest.getInviteCode());
+
+        if (list == null || list.getInviteCodeExpiration() == null ||
+                list.getInviteCodeExpiration().isBefore(LocalDateTime.now())) {
+            return ResponseEntity.status(HttpStatus.NOT_FOUND).body("Invalid or expired invite code");
+        }
+        if (list.getSharedWith() != null) {
+            return ResponseEntity.status(HttpStatus.IM_USED).body("List has already been shared");
+        }
+        if (list.getOwner().getId() == inviteRequest.getUserId()) {
+            return ResponseEntity.status(HttpStatus.BAD_REQUEST).body("You cant join your own List");
+        }
+        AppUser user = null;
+        try {
+            user = userService.getUser(inviteRequest.getUserId());
+        } catch (Exception e) {
+            throw new RuntimeException("User not found");
+        }
+        if (user != null) {
+            list.setSharedWith(user);
+            expenseListService.save(list);
+        } else {
+            throw new RuntimeException("User not found");
+        }
+        return ResponseEntity.ok("User added to the list");
+    }
+}

src/main/java/de/zendric/app/xpensely_server/controller/HomeController.java

@@ -0,0 +1,13 @@
+package de.zendric.app.xpensely_server.controller;
+
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+class HomeController {
+
+    @GetMapping("/")
+    public String getAll() {
+        return "Welcome";
+    }
+}

src/main/java/de/zendric/app/xpensely_server/model/AppUser.java

@@ -0,0 +1,40 @@
+package de.zendric.app.xpensely_server.model;
+
+import java.time.LocalDateTime;
+
+import org.hibernate.annotations.CreationTimestamp;
+
+import com.fasterxml.jackson.annotation.JsonIgnore;
+
+import jakarta.persistence.Column;
+import jakarta.persistence.Entity;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.GenerationType;
+import jakarta.persistence.Id;
+import lombok.EqualsAndHashCode;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import lombok.Setter;
+
+@Getter
+@Setter
+@NoArgsConstructor
+@Entity
+@EqualsAndHashCode
+public class AppUser {
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+
+    @Column(name = "username", nullable = false, unique = true)
+    private String username;
+
+    @JsonIgnore
+    private String googleId;
+
+    @Column(updatable = false)
+    @CreationTimestamp
+    @JsonIgnore
+    private LocalDateTime createdAt;
+
+}

src/main/java/de/zendric/app/xpensely_server/model/AppUserCreateRequest.java

@@ -0,0 +1,21 @@
+package de.zendric.app.xpensely_server.model;
+
+import jakarta.persistence.Column;
+import lombok.Data;
+
+@Data
+public class AppUserCreateRequest {
+
+    @Column(name = "username", nullable = false, unique = true)
+    private String username;
+
+    private String googleId;
+
+    public AppUser convertToAppUser() {
+        AppUser appUser = new AppUser();
+        appUser.setGoogleId(googleId);
+        appUser.setUsername(username);
+
+        return appUser;
+    }
+}

src/main/java/de/zendric/app/xpensely_server/model/Expense.java

@@ -0,0 +1,44 @@
+package de.zendric.app.xpensely_server.model;
+
+import java.time.LocalDate;
+
+import com.fasterxml.jackson.annotation.JsonBackReference;
+
+import jakarta.persistence.Entity;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.GenerationType;
+import jakarta.persistence.Id;
+import jakarta.persistence.JoinColumn;
+import jakarta.persistence.ManyToOne;
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import lombok.Setter;
+
+@Getter
+@Setter
+@Entity
+@AllArgsConstructor
+@NoArgsConstructor
+public class Expense {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+
+    private String title;
+
+    @ManyToOne
+    private AppUser owner;
+
+    private Double amount;
+    private Double personalUseAmount;
+    private Double otherPersonAmount;
+
+    private LocalDate date;
+
+    @ManyToOne
+    @JoinColumn(name = "expense_list_id", nullable = false)
+    @JsonBackReference
+    private ExpenseList expenseList;
+}

src/main/java/de/zendric/app/xpensely_server/model/ExpenseChangeRequest.java

@@ -0,0 +1,39 @@
+package de.zendric.app.xpensely_server.model;
+
+import java.time.LocalDate;
+
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+@Data
+@AllArgsConstructor
+@NoArgsConstructor
+public class ExpenseChangeRequest {
+
+    private Long id;
+    private String title;
+    private String ownerName;
+    private Double amount;
+    private Double personalUseAmount;
+    private Double otherPersonAmount;
+    private LocalDate date;
+
+    public Expense convertToExpense(Long userId, ExpenseList expenseList) {
+        AppUser appUser = new AppUser();
+        appUser.setId(userId);
+        appUser.setUsername(ownerName);
+
+        Expense expense = new Expense();
+        expense.setAmount(amount);
+        expense.setDate(date);
+        expense.setPersonalUseAmount(personalUseAmount);
+        expense.setOtherPersonAmount(otherPersonAmount);
+        expense.setExpenseList(expenseList);
+        expense.setId(id);
+        expense.setOwner(appUser);
+        expense.setTitle(title);
+
+        return expense;
+    }
+}

src/main/java/de/zendric/app/xpensely_server/model/ExpenseInput.java

@@ -0,0 +1,52 @@
+package de.zendric.app.xpensely_server.model;
+
+import java.time.LocalDate;
+
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.GenerationType;
+import jakarta.persistence.Id;
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import lombok.Setter;
+
+@Getter
+@Setter
+@AllArgsConstructor
+@NoArgsConstructor
+public class ExpenseInput {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+
+    private String title;
+
+    private String owner;
+
+    private Double amount;
+    private Double personalUseAmount;
+    private Double otherPersonAmount;
+
+    private LocalDate date;
+
+    private ExpenseList expenseList;
+
+    public Expense convertToExpense(Long userId) {
+        AppUser appUser = new AppUser();
+        appUser.setId(userId);
+        appUser.setUsername(owner);
+
+        Expense expense = new Expense();
+        expense.setAmount(amount);
+        expense.setDate(date);
+        expense.setPersonalUseAmount(personalUseAmount);
+        expense.setOtherPersonAmount(otherPersonAmount);
+        expense.setExpenseList(expenseList);
+        expense.setId(id);
+        expense.setOwner(appUser);
+        expense.setTitle(title);
+
+        return expense;
+    }
+}

src/main/java/de/zendric/app/xpensely_server/model/ExpenseList.java

@@ -0,0 +1,58 @@
+package de.zendric.app.xpensely_server.model;
+
+import java.time.LocalDateTime;
+import java.util.List;
+
+import com.fasterxml.jackson.annotation.JsonIgnore;
+import com.fasterxml.jackson.annotation.JsonManagedReference;
+
+import jakarta.persistence.CascadeType;
+import jakarta.persistence.Entity;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.GenerationType;
+import jakarta.persistence.Id;
+import jakarta.persistence.ManyToOne;
+import jakarta.persistence.OneToMany;
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import lombok.Setter;
+
+@Entity
+@Getter
+@Setter
+@AllArgsConstructor
+@NoArgsConstructor
+public class ExpenseList {
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+
+    private String name;
+
+    private String inviteCode;
+    @JsonIgnore
+    private LocalDateTime inviteCodeExpiration;
+
+    @ManyToOne
+    private AppUser owner;
+
+    @ManyToOne
+    private AppUser sharedWith;
+
+    @OneToMany(mappedBy = "expenseList", cascade = CascadeType.ALL, orphanRemoval = true)
+    @JsonManagedReference
+    @jakarta.persistence.OrderBy("date ASC, id ASC")
+    private List<Expense> expenses;
+
+    public void addExpense(Expense expense) {
+        expense.setExpenseList(this);
+        expenses.add(expense);
+
+    }
+
+    public void removeExpense(Expense expense) {
+        expenses.remove(expense);
+        expense.setExpenseList(null);
+    }
+}

src/main/java/de/zendric/app/xpensely_server/model/InviteRequest.java

@@ -0,0 +1,13 @@
+package de.zendric.app.xpensely_server.model;
+
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+@Data
+@AllArgsConstructor
+@NoArgsConstructor
+public class InviteRequest {
+    private String inviteCode;
+    private Long userId;
+}

src/main/java/de/zendric/app/xpensely_server/model/UsernameAlreadyExistsException.java

@@ -0,0 +1,11 @@
+package de.zendric.app.xpensely_server.model;
+
+import org.springframework.http.HttpStatus;
+import org.springframework.web.bind.annotation.ResponseStatus;
+
+@ResponseStatus(HttpStatus.CONFLICT)
+public class UsernameAlreadyExistsException extends RuntimeException {
+    public UsernameAlreadyExistsException(String message) {
+        super(message);
+    }
+}

src/main/java/de/zendric/app/xpensely_server/repo/ExpenseListRepository.java

@@ -0,0 +1,15 @@
+package de.zendric.app.xpensely_server.repo;
+
+import java.util.List;
+
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.stereotype.Repository;
+
+import de.zendric.app.xpensely_server.model.ExpenseList;
+
+@Repository
+public interface ExpenseListRepository extends JpaRepository<ExpenseList, Long> {
+    List<ExpenseList> findByOwnerId(Long ownerId);
+
+    ExpenseList findByInviteCode(String inviteCode);
+}

src/main/java/de/zendric/app/xpensely_server/repo/ExpenseRepository.java

@@ -0,0 +1,13 @@
+package de.zendric.app.xpensely_server.repo;
+
+import java.util.List;
+
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.stereotype.Repository;
+
+import de.zendric.app.xpensely_server.model.Expense;
+
+@Repository
+public interface ExpenseRepository extends JpaRepository<Expense, Long> {
+    List<Expense> findAllByOrderByDateAsc();
+}

src/main/java/de/zendric/app/xpensely_server/repo/UserRepository.java

@@ -0,0 +1,17 @@
+package de.zendric.app.xpensely_server.repo;
+
+import java.util.Optional;
+
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.stereotype.Repository;
+
+import de.zendric.app.xpensely_server.model.AppUser;
+
+@Repository
+public interface UserRepository extends JpaRepository<AppUser, Long> {
+    Optional<AppUser> findByUsername(String username);
+
+    Optional<AppUser> findByGoogleId(String id);
+
+    Boolean existsByUsername(String username);
+}

src/main/java/de/zendric/app/xpensely_server/security/SecurityConfig.java

@@ -0,0 +1,35 @@
+package de.zendric.app.xpensely_server.security;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.security.config.Customizer;
+import org.springframework.security.config.annotation.web.builders.HttpSecurity;
+import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
+import org.springframework.security.web.SecurityFilterChain;
+
+@Configuration
+@EnableWebSecurity
+public class SecurityConfig {
+        // @Bean
+        // public SecurityFilterChain securityFilterChain(HttpSecurity http) throws
+        // Exception {
+        // http.authorizeHttpRequests(auth -> auth
+        // .anyRequest().permitAll()).csrf().disable();
+        // ;
+
+        // return http.build();
+        // }
+
+        @Bean
+        public SecurityFilterChain securityFilterChain(HttpSecurity http) throws Exception {
+                http
+                                .authorizeHttpRequests(auth -> auth
+                                                .anyRequest().authenticated())
+                                .oauth2ResourceServer(oauth2 -> oauth2
+                                                .jwt(Customizer.withDefaults()))
+                                .oauth2Login(Customizer.withDefaults())
+                                .csrf().disable();
+
+                return http.build();
+        }
+}

src/main/java/de/zendric/app/xpensely_server/services/CleanupService.java

@@ -0,0 +1,34 @@
+package de.zendric.app.xpensely_server.services;
+
+import java.time.LocalDateTime;
+import java.util.List;
+import java.util.stream.Collectors;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.scheduling.annotation.Scheduled;
+import org.springframework.stereotype.Service;
+
+import de.zendric.app.xpensely_server.model.ExpenseList;
+import de.zendric.app.xpensely_server.repo.ExpenseListRepository;
+
+@Service
+
+public class CleanupService {
+
+    @Autowired
+    private ExpenseListRepository expenseListRepository;
+
+    @Scheduled(cron = "0 0 0 * * ?") // Runs daily at midnight
+    public void cleanupExpiredInvites() {
+        List<ExpenseList> expiredLists = expenseListRepository.findAll().stream()
+                .filter(list -> list.getInviteCodeExpiration() != null &&
+                        list.getInviteCodeExpiration().isBefore(LocalDateTime.now()))
+                .collect(Collectors.toList());
+
+        for (ExpenseList list : expiredLists) {
+            list.setInviteCode(null);
+            list.setInviteCodeExpiration(null);
+            expenseListRepository.save(list);
+        }
+    }
+}

src/main/java/de/zendric/app/xpensely_server/services/ExpenseListService.java

@@ -0,0 +1,184 @@
+package de.zendric.app.xpensely_server.services;
+
+import java.time.LocalDateTime;
+import java.util.ArrayList;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Optional;
+import java.util.UUID;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+
+import de.zendric.app.xpensely_server.model.AppUser;
+import de.zendric.app.xpensely_server.model.Expense;
+import de.zendric.app.xpensely_server.model.ExpenseList;
+import de.zendric.app.xpensely_server.repo.ExpenseListRepository;
+import de.zendric.app.xpensely_server.repo.ExpenseRepository;
+import jakarta.persistence.EntityManager;
+
+@Service
+@Transactional
+public class ExpenseListService {
+
+    private ExpenseListRepository repository;
+    private final ExpenseRepository expenseRepository;
+
+    @Autowired
+    private EntityManager entityManager;
+
+    @Autowired
+    public ExpenseListService(ExpenseListRepository repository, ExpenseRepository expenseRepository) {
+        this.repository = repository;
+        this.expenseRepository = expenseRepository;
+    }
+
+    public List<ExpenseList> getAllLists() {
+        return repository.findAll();
+    }
+
+    public ExpenseList createList(ExpenseList list) {
+        return repository.save(list);
+    }
+
+    public void deleteList(Long id) {
+        repository.deleteById(id);
+    }
+
+    public void deleteById(Long id) {
+        repository.deleteById(id);
+    }
+
+    public Optional<ExpenseList> findById(Long id) {
+        return repository.findById(id);
+    }
+
+    public Iterable<ExpenseList> findAll() {
+        return repository.findAll();
+    }
+
+    public ExpenseList save(ExpenseList expenseList) {
+        return repository.save(expenseList);
+    }
+
+    public List<ExpenseList> findByUserId(Long id) {
+        List<ExpenseList> allLists = repository.findAll();
+        List<ExpenseList> userSpecificList = new ArrayList<>();
+        for (ExpenseList expenseList : allLists) {
+            AppUser sharedWith = expenseList.getSharedWith();
+
+            if (expenseList.getOwner().getId().equals(id)) {
+                userSpecificList.add(expenseList);
+            } else {
+                if (sharedWith != null && sharedWith.getId().equals(id)) {
+                    userSpecificList.add(expenseList);
+                }
+            }
+        }
+        return userSpecificList;
+    }
+
+    public List<ExpenseList> findByUsername(String username) {
+        List<ExpenseList> allLists = repository.findAll();
+        List<ExpenseList> userSpecificList = new ArrayList<>();
+        for (ExpenseList expenseList : allLists) {
+            AppUser sharedWith = expenseList.getSharedWith();
+
+            if (expenseList.getOwner().getUsername().equals(username)) {
+                userSpecificList.add(expenseList);
+            } else {
+                if (sharedWith != null && sharedWith.getUsername().equals(username)) {
+                    userSpecificList.add(expenseList);
+                }
+            }
+        }
+        return userSpecificList;
+
+    }
+
+    public Expense addExpenseToList(Long expenseListId, Expense expense) {
+        // find expenseList
+        ExpenseList expenseList = repository.findById(expenseListId)
+                .orElseThrow(() -> new RuntimeException("ExpenseList not found with id: " + expenseListId));
+        // get all added expenses
+        HashSet<Long> existingId = new HashSet<>();
+        for (Expense e : expenseList.getExpenses()) {
+            existingId.add(e.getId());
+        }
+        // add the new expense
+        expenseList.addExpense(expense);
+        // save
+        repository.save(expenseList);
+
+        Expense newExpense = new Expense();
+        for (Expense e : expenseList.getExpenses()) {
+            if (!existingId.contains(e.getId())) {
+                newExpense = e;
+                break;
+            }
+        }
+        return newExpense;
+    }
+
+    public void deleteExpenseFromList(Long expenseListId, Long expenseId) {
+        ExpenseList expenseList = repository.findById(expenseListId)
+                .orElseThrow(() -> new RuntimeException("ExpenseList not found with id: " + expenseListId));
+        Expense expenseToRemove = null;
+        for (Expense expense : expenseList.getExpenses()) {
+            if (expense.getId().equals(expenseId)) {
+                expenseToRemove = expense;
+                break;
+            }
+        }
+        if (expenseToRemove != null) {
+            expenseList.removeExpense(expenseToRemove);
+        } else {
+            throw new RuntimeException("Expense not found with id: " + expenseId);
+        }
+        repository.save(expenseList);
+    }
+
+    public String generateInviteCode(Long listId) {
+        ExpenseList list = repository.findById(listId)
+                .orElseThrow(() -> new RuntimeException("List not found"));
+        String inviteCode;
+        if (list.getInviteCode() == null || list.getInviteCodeExpiration().isBefore(LocalDateTime.now())) {
+
+            inviteCode = UUID.randomUUID().toString().substring(0, 6).toUpperCase();
+            LocalDateTime expirationTime = LocalDateTime.now().plusWeeks(1);
+
+            list.setInviteCode(inviteCode);
+            list.setInviteCodeExpiration(expirationTime);
+            repository.save(list);
+        } else {
+            inviteCode = list.getInviteCode();
+        }
+        return inviteCode;
+    }
+
+    public ExpenseList findByInviteCode(String inviteCode) {
+        return repository.findByInviteCode(inviteCode);
+    }
+
+    public Expense updateExpense(Long expenseListId, Expense updatedExpense) {
+        ExpenseList expenseList = repository.findById(expenseListId)
+                .orElseThrow(() -> new IllegalArgumentException("ExpenseList not found"));
+
+        if (!expenseList.getExpenses().stream()
+                .anyMatch(expense -> expense.getId().equals(updatedExpense.getId()))) {
+            throw new IllegalArgumentException("Expense does not belong to the specified ExpenseList");
+        }
+
+        Expense existingExpense = expenseRepository.findById(updatedExpense.getId())
+                .orElseThrow(() -> new IllegalArgumentException("Expense not found"));
+        existingExpense.setTitle(updatedExpense.getTitle());
+        existingExpense.setAmount(updatedExpense.getAmount());
+        existingExpense.setPersonalUseAmount(updatedExpense.getPersonalUseAmount());
+        existingExpense.setOtherPersonAmount(updatedExpense.getOtherPersonAmount());
+        existingExpense.setDate(updatedExpense.getDate());
+        existingExpense.setOwner(updatedExpense.getOwner());
+
+        return expenseRepository.save(existingExpense);
+    }
+}

src/main/java/de/zendric/app/xpensely_server/services/ExpenseService.java

@@ -0,0 +1,19 @@
+package de.zendric.app.xpensely_server.services;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+
+import de.zendric.app.xpensely_server.repo.ExpenseRepository;
+
+@Service
+@Transactional
+public class ExpenseService {
+
+    @Autowired
+    private ExpenseRepository repository;
+
+    public ExpenseService(ExpenseRepository repository) {
+        this.repository = repository;
+    }
+}

src/main/java/de/zendric/app/xpensely_server/services/UserService.java

@@ -0,0 +1,64 @@
+package de.zendric.app.xpensely_server.services;
+
+import java.util.List;
+import java.util.Optional;
+
+import org.springframework.stereotype.Service;
+
+import de.zendric.app.xpensely_server.model.AppUser;
+import de.zendric.app.xpensely_server.model.UsernameAlreadyExistsException;
+import de.zendric.app.xpensely_server.repo.UserRepository;
+
+@Service
+public class UserService {
+    private final UserRepository userRepository;
+
+    public UserService(UserRepository userRepository) {
+        this.userRepository = userRepository;
+    }
+
+    public List<AppUser> getAllUsers() {
+        return userRepository.findAll();
+    }
+
+    public AppUser createUser(AppUser user) {
+        if (Boolean.TRUE.equals(userRepository.existsByUsername(user.getUsername()))) {
+            throw new UsernameAlreadyExistsException("Username already exists");
+        }
+        return userRepository.save(user);
+    }
+
+    public AppUser getUser(Long id) {
+        Optional<AppUser> user = userRepository.findById(id);
+        if (user.isPresent()) {
+            return user.get();
+        } else
+            return null;
+    }
+
+    public AppUser deleteUserById(Long id) {
+        Optional<AppUser> user = userRepository.findById(id);
+        if (user.isPresent()) {
+            userRepository.deleteById(id);
+            return user.get();
+        } else
+            return null;
+    }
+
+    public AppUser getUserByName(String username) {
+        Optional<AppUser> optUser = userRepository.findByUsername(username);
+        if (optUser.isPresent()) {
+            return optUser.get();
+        } else
+            return null;
+    }
+
+    public AppUser getUserByGoogleId(String id) {
+        Optional<AppUser> optUser = userRepository.findByGoogleId(id);
+        if (optUser.isPresent()) {
+            return optUser.get();
+        } else
+            return null;
+    }
+
+}

src/main/resources/application.properties

@@ -1 +1,18 @@
+#Server
 spring.application.name=XpenselyServer
+
+#Security
+spring.security.enabled=false
+spring.security.oauth2.client.registration.google.client-id=${GOOGLE_CLIENT_ID}
+spring.security.oauth2.client.registration.google.client-secret=${GOOGLE_CLIENT_SECRET}
+spring.security.oauth2.resourceserver.jwt.issuer-uri=https://accounts.google.com
+
+# PostgreSQL Configuration
+spring.datasource.url=jdbc:postgresql://postgresdb:${DB_PORT}/${DB_P_NAME}
+spring.datasource.username=${DB_USERNAME}
+spring.datasource.password=${DB_PASSWORD}
+spring.datasource.driver-class-name=org.postgresql.Driver
+
+# Hibernate configuration
+spring.jpa.hibernate.ddl-auto=update
+spring.jpa.properties.hibernate.dialect=org.hibernate.dialect.PostgreSQLDialect

src/test/java/de/zendric/app/xpensely_Server/XpenselyServerApplicationTests.java

@@ -1,4 +1,4 @@
-package de.zendric.app.XpenselyServer;
+package de.zendric.app.xpensely_Server;
 
 import org.junit.jupiter.api.Test;
 import org.springframework.boot.test.context.SpringBootTest;