name: Build & Push Portainer Automation
run-name: PA Build started by ${{ gitea.actor }}

on:
  push:
    branches:
      - test      # → PATCH bump, build & tag as test
      - main      # → MINOR bump, promote test→prod
  workflow_dispatch:

jobs:
  version:
    runs-on: ubuntu-latest
    outputs:
      new_version: ${{ steps.semver.outputs.new_version }}
      target_env: ${{ steps.env.outputs.target_env }}
    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Determine environment
        id: env
        run: |
          [[ "${{ github.ref_name }}" == "main" ]] && ENV="prod" || ENV="${{ github.ref_name }}"
          if [[ "$ENV" != "test" && "$ENV" != "prod" ]]; then
            echo "✦ Invalid environment: $ENV. Must be 'test' or 'prod'."
            exit 1
          fi
          echo "target_env=$ENV" >> $GITHUB_OUTPUT

      - name: Calculate semver bump
        id: semver
        run: |
          VERSION=$(git describe --tags --abbrev=0 2>/dev/null || echo "0.0.0")
          echo "Latest tag: ${VERSION}"
          MAJOR=$(echo ${VERSION} | cut -d "." -f 1)
          MINOR=$(echo ${VERSION} | cut -d "." -f 2)
          PATCH=$(echo ${VERSION} | cut -d "." -f 3)

          if [[ "${{ steps.env.outputs.target_env }}" == "prod" ]]; then
            # MINOR bump, reset PATCH
            NEW_MINOR=$((MINOR + 1))
            NEW_VERSION="${MAJOR}.${NEW_MINOR}.0"
            echo "Production → minor bump: ${NEW_VERSION}"
          else
            # test → PATCH bump
            NEW_PATCH=$((PATCH + 1))
            NEW_VERSION="${MAJOR}.${MINOR}.${NEW_PATCH}"
            echo "Test → patch bump: ${NEW_VERSION}"
          fi
          echo "new_version=${NEW_VERSION}" >> $GITHUB_OUTPUT

  build-and-push:
    runs-on: ubuntu-latest
    needs: version
    container:
      image: 192.168.0.100:8928/hithomelabs/ci-runner:1.0.0
    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Install JDK (Alpine package)
        run: |
          apk add --no-cache openjdk17-jdk
          echo "JAVA_HOME=/usr/lib/jvm/java-17-openjdk" >> "$GITHUB_ENV"

      - name: Validate Gradle Wrapper (offline checksum)
        run: |
          sha256sum --check gradle/wrapper/gradle-wrapper.jar.sha256

      - name: Create and push git tag
        run: |
          echo "New version: ${{ needs.version.outputs.new_version }}"
          git config --global user.name "${{ gitea.actor }}"
          git config --global user.email "${{ gitea.actor }}@users.noreply.github.com"
          git tag -a "${{ needs.version.outputs.new_version }}" \
            -m "Push PA version ${{ needs.version.outputs.new_version }}"
          git push origin "${{ needs.version.outputs.new_version }}"

      - name: Log in to Gitea Docker Registry
        uses: docker/login-action@v3
        with:
          registry: 'http://192.168.0.100:8928'
          username: hitanshu
          password: ${{ secrets.TOKEN }}

      - name: Build image (test) or promote (prod)
        run: |
          ENV="${{ needs.version.outputs.target_env }}"
          VER="${{ needs.version.outputs.new_version }}"
          REG="192.168.0.100:8928/hithomelabs/portainer-automation"

          if [[ "$ENV" == "test" ]]; then
            echo "🔨 Building fresh image for test"
            ./gradlew :portainer-automation:bootBuildImage --imageName="${REG}:${VER}"
            docker tag "${REG}:${VER}" "${REG}:test"
            docker push "${REG}:test"
            docker push "${REG}:${VER}"
          else
            echo "♻️ Promoting test image to prod"
            docker pull "${REG}:test"
            docker tag "${REG}:test" "${REG}:${VER}"
            docker tag "${REG}:${VER}" "${REG}:prod"
            docker push "${REG}:prod"
            docker push "${REG}:${VER}"
          fi