name: Release Workflow

on:
  push:
    branches:
      - "main"

env:
  GITEA_TOKEN: ${{ secrets.GITEA_TOKEN }}

permissions:
  contents: read

jobs:
  verify:
    name: "Verify Main Branch"
    uses: ./.gitea/workflows/ci.yml

  prepare-release:
    name: "Prepare Release"
    needs: verify
    steps:
      - name: "Checkout"
        uses: actions/checkout@v4
        with:
          fetch-depth: 0
      
      - name: "Setup Node.js"
        uses: actions/setup-node@v4
        with:
          node-version: 20
          cache: 'npm'
      
      - name: "Cache npm dependencies"
        uses: actions/cache@v4
        with:
          path: ~/.npm
          key: ${{ runner.os }}-npm-${{ hashFiles('**/package-lock.json') }}
          restore-keys: |
            ${{ runner.os }}-npm-
            
      - name: "Install dependencies"
        run: npm ci
      
      - name: "Generate Release Notes"
        id: release-notes
        run: |
          LATEST_TAG=$(git describe --tags --abbrev=0 2>/dev/null || echo "v0.0.0")
          
          echo "### Changes since $LATEST_TAG" > release-notes.md
          echo "" >> release-notes.md
          
          # Add category headers
          echo "#### 🚀 Features" >> release-notes.md
          git log $LATEST_TAG..HEAD --pretty=format:"- %s (%h)" --grep="^feat" >> release-notes.md
          echo "" >> release-notes.md
          echo "" >> release-notes.md
          
          echo "#### 🐛 Bug Fixes" >> release-notes.md
          git log $LATEST_TAG..HEAD --pretty=format:"- %s (%h)" --grep="^fix" >> release-notes.md
          echo "" >> release-notes.md
          echo "" >> release-notes.md
          
          echo "#### ♻️ Code Refactoring" >> release-notes.md
          git log $LATEST_TAG..HEAD --pretty=format:"- %s (%h)" --grep="^refactor" >> release-notes.md
          echo "" >> release-notes.md
          echo "" >> release-notes.md
          
          echo "#### 🧪 Tests" >> release-notes.md
          git log $LATEST_TAG..HEAD --pretty=format:"- %s (%h)" --grep="^test" >> release-notes.md
          echo "" >> release-notes.md
          echo "" >> release-notes.md
          
          echo "#### 📚 Documentation" >> release-notes.md
          git log $LATEST_TAG..HEAD --pretty=format:"- %s (%h)" --grep="^docs" >> release-notes.md
          echo "" >> release-notes.md
          echo "" >> release-notes.md
          
          echo "#### 🧹 Chores" >> release-notes.md
          git log $LATEST_TAG..HEAD --pretty=format:"- %s (%h)" --grep="^chore" >> release-notes.md
          echo "" >> release-notes.md
          echo "" >> release-notes.md
          
          echo "#### ⚙️ CI" >> release-notes.md
          git log $LATEST_TAG..HEAD --pretty=format:"- %s (%h)" --grep="^ci" >> release-notes.md
          echo "" >> release-notes.md
          echo "" >> release-notes.md
          
          echo "#### 🔧 Build System" >> release-notes.md  
          git log $LATEST_TAG..HEAD --pretty=format:"- %s (%h)" --grep="^build" >> release-notes.md
          echo "" >> release-notes.md
          echo "" >> release-notes.md
          
          cat release-notes.md
          
          # Save for next steps
          echo "release_notes=$(cat release-notes.md | base64 -w 0)" >> $GITHUB_OUTPUT
      
      - name: "Upload Release Notes"
        uses: actions/upload-artifact@v4
        with:
          name: release-notes
          path: release-notes.md
          retention-days: 7

  release:
    name: "Semantic Release"
    needs: prepare-release
    permissions:
      contents: write
      issues: write 
      pull-requests: write
      id-token: write
    outputs:
      new_release_version: ${{ steps.semantic-release.outputs.new_release_version }}
      new_release_published: ${{ steps.semantic-release.outputs.new_release_published }}
    steps:
      - name: "Checkout"
        uses: actions/checkout@v4
        with:
          fetch-depth: 0
      
      - name: "Setup Node.js"
        uses: actions/setup-node@v4
        with:
          node-version: 20
          cache: 'npm'
      
      - name: "Install dependencies"
        run: npm ci
      
      - name: "Download Release Notes"
        uses: actions/download-artifact@v4
        with:
          name: release-notes
          path: ./
      
      - name: "Create Release"
        id: semantic-release
        uses: https://git.kjan.de/actions/semantic-release@main
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          GITEA_TOKEN: ${{ secrets.GITEA_TOKEN }}

  build-artifacts:
    name: "Build Release Artifacts"
    needs: release
    if: ${{ needs.release.outputs.new_release_published == 'true' }}
    steps:
      - name: "Checkout Code"
        uses: actions/checkout@v4
        with:
          ref: main
      
      # Backend Build
      - name: "Setup Java"
        uses: actions/setup-java@v4
        with:
          distribution: 'temurin'
          java-version: '23'
          cache: 'gradle'
      
      - name: "Build Backend"
        working-directory: ./backend
        run: ./gradlew bootJar --parallel --build-cache
      
      - name: "Upload Backend Artifact"
        uses: actions/upload-artifact@v4
        with:
          name: backend-${{ needs.release.outputs.new_release_version }}
          path: backend/build/libs/*.jar
          retention-days: 30
      
      # Frontend Build
      - name: "Install Bun"
        uses: oven-sh/setup-bun@v2
        with:
          bun-version: latest
      
      - name: "Cache Frontend Dependencies"
        uses: actions/cache@v4
        with:
          path: frontend/node_modules
          key: ${{ runner.os }}-bun-${{ hashFiles('frontend/bun.lock') }}
          restore-keys: |
            ${{ runner.os }}-bun-
      
      - name: "Install Frontend Dependencies"
        working-directory: ./frontend
        run: bun install --frozen-lockfile
      
      - name: "Build Frontend"
        working-directory: ./frontend
        run: bun run build --configuration production
      
      - name: "Archive Frontend Build"
        run: tar -czf frontend-${{ needs.release.outputs.new_release_version }}.tar.gz -C frontend/dist .
      
      - name: "Upload Frontend Artifact"
        uses: actions/upload-artifact@v4
        with:
          name: frontend-${{ needs.release.outputs.new_release_version }}
          path: frontend-${{ needs.release.outputs.new_release_version }}.tar.gz
          retention-days: 30
      
      - name: "Attach Artifacts to Release"
        env:
          GITEA_TOKEN: ${{ secrets.GITEA_TOKEN }}
          VERSION: ${{ needs.release.outputs.new_release_version }}
        run: |
          RELEASE_ID=$(curl -s -H "Authorization: token $GITEA_TOKEN" \
            "https://git.kjan.de/api/v1/repos/${{ github.repository }}/releases/tags/v$VERSION" | jq '.id')
          
          # Upload backend JAR
          JAR_FILE=$(find backend/build/libs -name "*.jar" -type f | head -n 1)
          JAR_NAME=$(basename $JAR_FILE)
          
          curl -X POST \
            -H "Authorization: token $GITEA_TOKEN" \
            -H "Content-Type: application/octet-stream" \
            --data-binary @"$JAR_FILE" \
            "https://git.kjan.de/api/v1/repos/${{ github.repository }}/releases/$RELEASE_ID/assets?name=$JAR_NAME"
          
          # Upload frontend archive
          curl -X POST \
            -H "Authorization: token $GITEA_TOKEN" \
            -H "Content-Type: application/octet-stream" \
            --data-binary @"frontend-$VERSION.tar.gz" \
            "https://git.kjan.de/api/v1/repos/${{ github.repository }}/releases/$RELEASE_ID/assets?name=frontend-$VERSION.tar.gz"

  notify:
    name: "Notification"
    needs: [release, build-artifacts]
    if: ${{ always() && needs.release.outputs.new_release_published == 'true' }}
    steps:
      - name: "Post Release Summary"
        run: |
          VERSION="${{ needs.release.outputs.new_release_version }}"
          
          echo "### Release v$VERSION Successfully Published! 🎉" >> $GITHUB_STEP_SUMMARY
          echo "" >> $GITHUB_STEP_SUMMARY
          echo "✅ Semantic versioning completed" >> $GITHUB_STEP_SUMMARY
          echo "✅ Release notes generated" >> $GITHUB_STEP_SUMMARY
          echo "✅ Tags and GitHub Release created" >> $GITHUB_STEP_SUMMARY
          echo "✅ Build artifacts attached to release" >> $GITHUB_STEP_SUMMARY
          echo "" >> $GITHUB_STEP_SUMMARY
          echo "👉 [View Release](https://git.kjan.de/${{ github.repository }}/releases/tag/v$VERSION)" >> $GITHUB_STEP_SUMMARY
          
          if [[ ${{ always() && needs.build-artifacts.result != 'success' }} == 'true' ]]; then
            echo "" >> $GITHUB_STEP_SUMMARY
            echo "⚠️ **Warning:** There was an issue with artifact building. Please check the logs." >> $GITHUB_STEP_SUMMARY
          fi