# Copyright 2024 RustFS Team
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

# Docker Images Workflow
#
# This workflow builds Docker images using pre-built binaries from the build workflow.
#
# Trigger Types:
# 1. workflow_run: Automatically triggered when "Build and Release" workflow completes
# 2. workflow_dispatch: Manual trigger for standalone Docker builds
#
# Key Features:
# - Only triggers when Linux builds (x86_64 + aarch64) are successful
# - Independent of macOS/Windows build status
# - Uses workflow_run event for precise control

name: Docker Images

# Permissions needed for workflow_run event and Docker registry access
permissions:
  contents: read
  packages: write

on:
  # Automatically triggered when build workflow completes
  workflow_run:
    workflows: ["Build and Release"]
    types: [completed]
    branches: [main]
  # Manual trigger with same parameters for consistency
  workflow_dispatch:
    inputs:
      push_images:
        description: "Push images to registries"
        required: false
        default: true
        type: boolean
      version:
        description: "Version to build (latest, main-latest, dev-latest, or specific version like v1.0.0 or dev-abc123)"
        required: false
        default: "main-latest"
        type: string
      force_rebuild:
        description: "Force rebuild even if binary exists (useful for testing)"
        required: false
        default: false
        type: boolean

env:
  DOCKERHUB_USERNAME: rustfs
  CARGO_TERM_COLOR: always
  REGISTRY_DOCKERHUB: rustfs/rustfs
  REGISTRY_GHCR: ghcr.io/${{ github.repository }}
  DOCKER_PLATFORMS: linux/amd64,linux/arm64

jobs:
  # Check if we should build Docker images
  build-check:
    name: Docker Build Check
    runs-on: ubuntu-latest
    outputs:
      should_build: ${{ steps.check.outputs.should_build }}
      should_push: ${{ steps.check.outputs.should_push }}
      build_type: ${{ steps.check.outputs.build_type }}
      version: ${{ steps.check.outputs.version }}
      short_sha: ${{ steps.check.outputs.short_sha }}
      is_prerelease: ${{ steps.check.outputs.is_prerelease }}
      create_latest: ${{ steps.check.outputs.create_latest }}
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Check build conditions
        id: check
        run: |
          should_build=false
          should_push=false
          build_type="none"
          version=""
          short_sha=""
          is_prerelease=false
          create_latest=false

          if [[ "${{ github.event_name }}" == "workflow_run" ]]; then
            # Triggered by build workflow completion
            echo "🔗 Triggered by build workflow completion"

            # Check if the triggering workflow was successful
            # If the workflow succeeded, it means ALL builds (including Linux x86_64 and aarch64) succeeded
            if [[ "${{ github.event.workflow_run.conclusion }}" == "success" ]]; then
              echo "✅ Build workflow succeeded, all builds including Linux are successful"
              should_build=true
              should_push=true
            else
              echo "❌ Build workflow failed (conclusion: ${{ github.event.workflow_run.conclusion }}), skipping Docker build"
              should_build=false
            fi

            # Extract version info from commit message or use commit SHA
            short_sha=$(echo "${{ github.event.workflow_run.head_sha }}" | cut -c1-7)

            # Determine build type based on branch and commit
            if [[ "${{ github.event.workflow_run.head_branch }}" == "main" ]]; then
              build_type="development"
              version="dev-${short_sha}"
            elif [[ "${{ github.event.workflow_run.event }}" == "push" ]] && [[ "${{ github.event.workflow_run.head_branch }}" =~ ^refs/tags/ ]]; then
              # Tag push
              tag_name="${{ github.event.workflow_run.head_branch }}"
              version="${tag_name#refs/tags/}"
              if [[ "$version" == *"alpha"* ]] || [[ "$version" == *"beta"* ]] || [[ "$version" == *"rc"* ]]; then
                build_type="prerelease"
                is_prerelease=true
              else
                build_type="release"
                create_latest=true
              fi
            else
              build_type="development"
              version="dev-${short_sha}"
            fi

            echo "🔄 Build triggered by workflow_run:"
            echo "   📋 Conclusion: ${{ github.event.workflow_run.conclusion }}"
            echo "   🌿 Branch: ${{ github.event.workflow_run.head_branch }}"
            echo "   📎 SHA: ${{ github.event.workflow_run.head_sha }}"
            echo "   🎯 Event: ${{ github.event.workflow_run.event }}"

          elif [[ "${{ github.event_name }}" == "workflow_dispatch" ]]; then
            # Manual trigger
            input_version="${{ github.event.inputs.version }}"
            version="${input_version}"
            should_push="${{ github.event.inputs.push_images }}"
            should_build=true

            # Get short SHA
            short_sha=$(git rev-parse --short HEAD)

            echo "🎯 Manual Docker build triggered:"
            echo "   📋 Requested version: $input_version"
            echo "   🔧 Force rebuild: ${{ github.event.inputs.force_rebuild }}"
            echo "   🚀 Push images: $should_push"

            case "$input_version" in
              "latest")
                build_type="release"
                create_latest=true
                echo "🚀 Building with latest stable release version"
                ;;
              "main-latest")
                build_type="development"
                version="main-latest"
                echo "🛠️  Building with main branch latest development version"
                ;;
              "dev-latest")
                build_type="development"
                version="dev-latest"
                echo "🛠️  Building with development latest version"
                ;;
              v[0-9]*)
                build_type="release"
                create_latest=true
                echo "📦 Building with specific release version: $input_version"
                ;;
              v*alpha*|v*beta*|v*rc*)
                build_type="prerelease"
                is_prerelease=true
                echo "🧪 Building with prerelease version: $input_version"
                ;;
              dev-[a-f0-9]*)
                build_type="development"
                echo "🔧 Building with specific development version: $input_version"
                ;;
              *)
                build_type="development"
                echo "🔧 Building with custom version: $input_version"
                echo "⚠️  Warning: Custom version format may not follow standard patterns"
                ;;
            esac
          fi

          echo "should_build=$should_build" >> $GITHUB_OUTPUT
          echo "should_push=$should_push" >> $GITHUB_OUTPUT
          echo "build_type=$build_type" >> $GITHUB_OUTPUT
          echo "version=$version" >> $GITHUB_OUTPUT
          echo "short_sha=$short_sha" >> $GITHUB_OUTPUT
          echo "is_prerelease=$is_prerelease" >> $GITHUB_OUTPUT
          echo "create_latest=$create_latest" >> $GITHUB_OUTPUT

          echo "🐳 Docker Build Summary:"
          echo "  - Should build: $should_build"
          echo "  - Should push: $should_push"
          echo "  - Build type: $build_type"
          echo "  - Version: $version"
          echo "  - Short SHA: $short_sha"
          echo "  - Is prerelease: $is_prerelease"
          echo "  - Create latest: $create_latest"

  # Build multi-arch Docker images
  # Strategy: Build images using pre-built binaries from dl.rustfs.com
  # Supports both release and dev channel binaries based on build context
  # Only runs when should_build is true (which includes workflow success check)
  build-docker:
    name: Build Docker Images
    needs: build-check
    if: needs.build-check.outputs.should_build == 'true'
    runs-on: ubuntu-latest
    timeout-minutes: 60
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4

      - name: Login to Docker Hub
        uses: docker/login-action@v3
        with:
          username: ${{ env.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}
          scopes: repository:rustfs/rustfs:pull,push

      # - name: Login to GitHub Container Registry
      #   uses: docker/login-action@v3
      #   with:
      #     registry: ghcr.io
      #     username: ${{ github.actor }}
      #     password: ${{ secrets.GITHUB_TOKEN }}

      - name: Set up QEMU
        uses: docker/setup-qemu-action@v3

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

      - name: Extract metadata and generate tags
        id: meta
        run: |
          BUILD_TYPE="${{ needs.build-check.outputs.build_type }}"
          VERSION="${{ needs.build-check.outputs.version }}"
          SHORT_SHA="${{ needs.build-check.outputs.short_sha }}"
          CREATE_LATEST="${{ needs.build-check.outputs.create_latest }}"

          # Generate tags based on build type
          TAGS=""

          if [[ "$BUILD_TYPE" == "development" ]]; then
            # Development build: dev-${short_sha} and dev
            TAGS="${{ env.REGISTRY_DOCKERHUB }}:dev-${SHORT_SHA}"
            TAGS="$TAGS,${{ env.REGISTRY_DOCKERHUB }}:dev"
          else
            # Release/Prerelease build: ${version}
            TAGS="${{ env.REGISTRY_DOCKERHUB }}:${VERSION}"

            # Add channel tags for prereleases and latest for stable
            if [[ "$CREATE_LATEST" == "true" ]]; then
              # Stable release
              TAGS="$TAGS,${{ env.REGISTRY_DOCKERHUB }}:latest"
            elif [[ "$BUILD_TYPE" == "prerelease" ]]; then
              # Prerelease channel tags (alpha, beta, rc)
              if [[ "$VERSION" == *"alpha"* ]]; then
                CHANNEL="alpha"
              elif [[ "$VERSION" == *"beta"* ]]; then
                CHANNEL="beta"
              elif [[ "$VERSION" == *"rc"* ]]; then
                CHANNEL="rc"
              fi

              if [[ -n "$CHANNEL" ]]; then
                TAGS="$TAGS,${{ env.REGISTRY_DOCKERHUB }}:${CHANNEL}"
              fi
            fi
          fi

          # Output tags
          echo "tags=$TAGS" >> $GITHUB_OUTPUT

          # Generate labels
          LABELS="org.opencontainers.image.title=RustFS"
          LABELS="$LABELS,org.opencontainers.image.description=RustFS distributed object storage system"
          LABELS="$LABELS,org.opencontainers.image.version=$VERSION"
          LABELS="$LABELS,org.opencontainers.image.revision=${{ github.sha }}"
          LABELS="$LABELS,org.opencontainers.image.source=${{ github.server_url }}/${{ github.repository }}"
          LABELS="$LABELS,org.opencontainers.image.created=$(date -u +'%Y-%m-%dT%H:%M:%SZ')"
          LABELS="$LABELS,org.opencontainers.image.build-type=$BUILD_TYPE"

          echo "labels=$LABELS" >> $GITHUB_OUTPUT

          echo "🐳 Generated Docker tags:"
          echo "$TAGS" | tr ',' '\n' | sed 's/^/  - /'
          echo "📋 Build type: $BUILD_TYPE"
          echo "🔖 Version: $VERSION"

      - name: Build and push Docker image
        uses: docker/build-push-action@v6
        with:
          context: .
          file: Dockerfile
          platforms: ${{ env.DOCKER_PLATFORMS }}
          push: ${{ needs.build-check.outputs.should_push == 'true' }}
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          cache-from: |
            type=gha,scope=docker-binary
          cache-to: |
            type=gha,mode=max,scope=docker-binary
          build-args: |
            BUILDTIME=$(date -u +'%Y-%m-%dT%H:%M:%SZ')
            VERSION=${{ needs.build-check.outputs.version }}
            BUILD_TYPE=${{ needs.build-check.outputs.build_type }}
            REVISION=${{ github.sha }}
            RELEASE=${{ needs.build-check.outputs.version }}
            BUILDKIT_INLINE_CACHE=1
          # Enable advanced BuildKit features for better performance
          provenance: false
          sbom: false
          # Add retry mechanism by splitting the build process
          no-cache: false
          pull: true

  # Note: Manifest creation is no longer needed as we only build one variant
  # Multi-arch manifests are automatically created by docker/build-push-action

  # Docker build summary
  docker-summary:
    name: Docker Build Summary
    needs: [build-check, build-docker]
    if: always() && needs.build-check.outputs.should_build == 'true'
    runs-on: ubuntu-latest
    steps:
      - name: Docker build completion summary
        run: |
          BUILD_TYPE="${{ needs.build-check.outputs.build_type }}"
          VERSION="${{ needs.build-check.outputs.version }}"
          CREATE_LATEST="${{ needs.build-check.outputs.create_latest }}"

          echo "🐳 Docker build completed successfully!"
          echo "📦 Build type: $BUILD_TYPE"
          echo "🔢 Version: $VERSION"
          echo "🚀 Strategy: Images using pre-built binaries (supports both release and dev channels)"
          echo ""

          case "$BUILD_TYPE" in
            "development")
              echo "🛠️  Development Docker image has been built with dev-${VERSION} tags"
              echo "⚠️  This is a development image - not suitable for production use"
              ;;
            "release")
              echo "🚀 Release Docker image has been built with ${VERSION} tags"
              echo "✅ This image is ready for production use"
              if [[ "$CREATE_LATEST" == "true" ]]; then
                echo "🏷️  Latest tag has been created for stable release"
              fi
              ;;
            "prerelease")
              echo "🧪 Prerelease Docker image has been built with ${VERSION} tags"
              echo "⚠️  This is a prerelease image - use with caution"
              echo "🚫 Latest tag NOT created for prerelease"
              ;;
          esac