name: Docker Build and Push

on:
  push:
    branches:
      - main
      - staging
      - feat/testing
    tags:
      - 'v*'
    paths:
      - '**.go'
      - 'go.mod'
      - 'go.sum'
      - 'Dockerfile'
      - 'Dockerfile.*'
      - '.dockerignore'
      - '.gitea/workflows/build.yml'

jobs:
  build-amd64:
    runs-on: [ubuntu-latest, amd64]

    steps:
      - name: Checkout repository
        uses: actions/checkout@v6

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3

      - name: Log in to Docker Registry
        uses: docker/login-action@v3
        with:
          registry: git.fossy.my.id
          username: ${{ secrets.DOCKER_USERNAME }}
          password: ${{ secrets.DOCKER_PASSWORD }}

      - name: Set version variables
        id: vars
        run: |
          if [ "${{ github.ref_type }}" == "tag" ]; then
            VERSION=${GITHUB_REF#refs/tags/v}
          elif [ "${{ github.ref }}" == "refs/heads/main" ]; then
            VERSION=dev-main
          else
            VERSION=dev-staging
          fi
          echo "VERSION=$VERSION" >> $GITHUB_OUTPUT
          echo "BUILD_DATE=$(date -u +'%Y-%m-%dT%H:%M:%SZ')" >> $GITHUB_OUTPUT
          echo "COMMIT=${{ github.sha }}" >> $GITHUB_OUTPUT

      - name: Build and push AMD64 image
        uses: docker/build-push-action@v6
        with:
          context: .
          push: true
          tags: git.fossy.my.id/${{ secrets.DOCKER_USERNAME }}/tunnel-please:${{ steps.vars.outputs.VERSION }}-amd64
          platforms: linux/amd64
          build-args: |
            VERSION=${{ steps.vars.outputs.VERSION }}
            BUILD_DATE=${{ steps.vars.outputs.BUILD_DATE }}
            COMMIT=${{ steps.vars.outputs.COMMIT }}
          outputs: type=image,name=git.fossy.my.id/${{ secrets.DOCKER_USERNAME }}/tunnel-please,push-by-digest=true,name-canonical=true,push=true

      - name: Export digest
        run: |
          mkdir -p /tmp/digests
          digest="${{ steps.build.outputs.digest }}"
          touch "/tmp/digests/${digest#sha256:}"

      - name: Upload digest
        uses: actions/upload-artifact@v4
        with:
          name: digests-amd64
          path: /tmp/digests/*
          if-no-files-found: error
          retention-days: 1

  build-arm64:
    runs-on: [ubuntu-latest, arm64]

    steps:
      - name: Checkout repository
        uses: actions/checkout@v6

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3

      - name: Log in to Docker Registry
        uses: docker/login-action@v3
        with:
          registry: git.fossy.my.id
          username: ${{ secrets.DOCKER_USERNAME }}
          password: ${{ secrets.DOCKER_PASSWORD }}

      - name: Set version variables
        id: vars
        run: |
          if [ "${{ github.ref_type }}" == "tag" ]; then
            VERSION=${GITHUB_REF#refs/tags/v}
          elif [ "${{ github.ref }}" == "refs/heads/main" ]; then
            VERSION=dev-main
          else
            VERSION=dev-staging
          fi
          echo "VERSION=$VERSION" >> $GITHUB_OUTPUT
          echo "BUILD_DATE=$(date -u +'%Y-%m-%dT%H:%M:%SZ')" >> $GITHUB_OUTPUT
          echo "COMMIT=${{ github.sha }}" >> $GITHUB_OUTPUT

      - name: Build and push ARM64 image
        uses: docker/build-push-action@v6
        with:
          context: .
          push: true
          tags: git.fossy.my.id/${{ secrets.DOCKER_USERNAME }}/tunnel-please:${{ steps.vars.outputs.VERSION }}-arm64
          platforms: linux/arm64
          build-args: |
            VERSION=${{ steps.vars.outputs.VERSION }}
            BUILD_DATE=${{ steps.vars.outputs.BUILD_DATE }}
            COMMIT=${{ steps.vars.outputs.COMMIT }}
          outputs: type=image,name=git.fossy.my.id/${{ secrets.DOCKER_USERNAME }}/tunnel-please,push-by-digest=true,name-canonical=true,push=true

      - name: Export digest
        run: |
          mkdir -p /tmp/digests
          digest="${{ steps.build.outputs.digest }}"
          touch "/tmp/digests/${digest#sha256:}"

      - name: Upload digest
        uses: actions/upload-artifact@v4
        with:
          name: digests-arm64
          path: /tmp/digests/*
          if-no-files-found: error
          retention-days: 1

  merge:
    runs-on: ubuntu-latest
    needs:
      - build-amd64
      - build-arm64

    steps:
      - name: Download digests
        uses: actions/download-artifact@v4
        with:
          path: /tmp/digests
          pattern: digests-*
          merge-multiple: true

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3

      - name: Log in to Docker Registry
        uses: docker/login-action@v3
        with:
          registry: git.fossy.my.id
          username: ${{ secrets.DOCKER_USERNAME }}
          password: ${{ secrets.DOCKER_PASSWORD }}

      - name: Determine tags
        id: tags
        run: |
          TAGS=""
          
          if [ "${{ github.ref_type }}" == "tag" ]; then
            VERSION=${GITHUB_REF#refs/tags/v}
          
            if echo "$VERSION" | grep -qE '^[0-9]+\.[0-9]+\.[0-9]+(-[a-zA-Z0-9.]+)?$'; then
              MAJOR=$(echo "$VERSION" | cut -d. -f1)
              MINOR=$(echo "$VERSION" | cut -d. -f2)
          
              TAGS="v${VERSION}"
          
              if echo "$VERSION" | grep -q '-'; then
                TAGS="${TAGS},staging"
              else
                TAGS="${TAGS},v${MAJOR}.${MINOR},v${MAJOR},latest"
              fi
            else
              echo "Invalid version format: $VERSION"
              exit 1
            fi
          elif [ "${{ github.ref }}" == "refs/heads/main" ]; then
            TAGS="latest"
          elif [ "${{ github.ref }}" == "refs/heads/staging" ]; then
            TAGS="staging"
          fi
          
          echo "TAGS=$TAGS" >> $GITHUB_OUTPUT

      - name: Create manifest list and push
        working-directory: /tmp/digests
        run: |
          IFS=',' read -ra TAG_ARRAY <<< "${{ steps.tags.outputs.TAGS }}"
          
          CMD="docker buildx imagetools create"
          
          for tag in "${TAG_ARRAY[@]}"; do
            CMD="$CMD -t git.fossy.my.id/${{ secrets.DOCKER_USERNAME }}/tunnel-please:${tag}"
          done
          
          CMD="$CMD $(printf 'git.fossy.my.id/${{ secrets.DOCKER_USERNAME }}/tunnel-please@sha256:%s ' *)"
          
          eval $CMD

      - name: Inspect image
        run: |
          IFS=',' read -ra TAG_ARRAY <<< "${{ steps.tags.outputs.TAGS }}"
          FIRST_TAG="${TAG_ARRAY[0]}"
          docker buildx imagetools inspect git.fossy.my.id/${{ secrets.DOCKER_USERNAME }}/tunnel-please:${FIRST_TAG}