name: Build & Deploy Java API

on:
  push:
    branches: [main]

env:
  REGISTRY: harbor.cjjhc.top/library
  APP_NAME: demo-java-api

jobs:
  build:
    runs-on: self-hosted

    steps:
      - name: Prepare workspace
        run: |
          WORK=/root/.cache/${{ env.APP_NAME }}
          rm -rf "$WORK"
          mkdir -p "$WORK"

      - name: Checkout code
        uses: actions/checkout@v4
        with:
          path: ${{ env.APP_NAME }}

      - name: Set up JDK 17
        uses: actions/setup-java@v4
        with:
          java-version: '17'
          distribution: 'temurin'

      - name: Cache Maven packages
        uses: actions/cache@v3
        with:
          path: ~/.m2/repository
          key: ${{ runner.os }}-maven-${{ hashFiles('**/pom.xml') }}
          restore-keys: |
            ${{ runner.os }}-maven-

      - name: Login to Harbor
        run: docker login ${{ env.REGISTRY }} -u admin -p "${{ secrets.HARBOR_PASSWORD }}"

      - name: Build with Maven
        run: |
          cd ${{ env.APP_NAME }}
          mvn clean package -DskipTests

      - name: Build & push Docker image
        run: |
          cd ${{ env.APP_NAME }}
          SHORT=${GITHUB_SHA::8}
          TAG="${{ env.REGISTRY }}/${{ env.APP_NAME }}:${SHORT}"
          LATEST="${{ env.REGISTRY }}/${{ env.APP_NAME }}:latest"

          docker build -t "${TAG}" -t "${LATEST}" .
          docker push "${TAG}"
          docker push "${LATEST}"
          echo "✓ Pushed ${TAG}"

      - name: Update image tag in values.yaml (commit-back GitOps)
        run: |
          cd ${{ env.APP_NAME }}
          SHORT=${GITHUB_SHA::8}

          # Update tag in values.yaml
          sed -i "s/^  tag:.*/  tag: \"${SHORT}\"/" deploy/helm/values.yaml

          # Configure git
          git config user.email "ci@local"
          git config user.name "gitea-ci"

          # Commit and push
          git add deploy/helm/values.yaml
          git commit -m "ci: update image tag to ${SHORT}" || echo "nothing to commit"
          git push origin main
          echo "✓ Pushed values.yaml with tag ${SHORT}"