name: Build and Publish Docker Image

on:
  push:
    tags:
      - "v*"

env:
  REGISTRY: ghcr.io
  IMAGE_NAME: krau/saveany-bot

concurrency:
  group: docker-build-${{ github.repository }}
  cancel-in-progress: true

jobs:
  prepare:
    runs-on: ubuntu-latest
    permissions:
      contents: read
      packages: write

    outputs:
      tags: ${{ steps.meta.outputs.tags }}
      labels: ${{ steps.meta.outputs.labels }}
      version: ${{ steps.args.outputs.version }}
      git_commit: ${{ steps.args.outputs.git_commit }}
      build_time: ${{ steps.args.outputs.build_time }}

    steps:
      - name: Checkout repository
        uses: actions/checkout@v4

      - name: Extract metadata for Docker
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
          tags: |
            type=semver,pattern={{version}}
            type=semver,pattern={{major}}.{{minor}}
            type=sha
            type=raw,value=latest

      - name: Extract Dockerfile args
        id: args
        run: |
          echo "git_commit=$(git rev-parse --short HEAD)" >> "$GITHUB_OUTPUT"
          echo "build_time=$(git show -s --format=%cI)" >> "$GITHUB_OUTPUT"

  build:
    needs: prepare
    permissions:
      contents: read
      packages: write
    strategy:
      matrix:
        arch: [amd64, arm64]
        type: [default, micro, pico]
      fail-fast: false

    runs-on: ${{ matrix.arch == 'amd64' && 'ubuntu-latest' || 'ubuntu-24.04-arm' }}

    steps:
      - name: Checkout repository
        uses: actions/checkout@v4

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

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

      - name: Set Dockerfile path
        id: dockerfile
        run: |
          if [ "${{ matrix.type }}" == "default" ]; then
            echo "DOCKERFILE=./Dockerfile" >> "$GITHUB_OUTPUT"
          elif [ "${{ matrix.type }}" == "micro" ]; then
            echo "DOCKERFILE=./Dockerfile.micro" >> "$GITHUB_OUTPUT"
          else
            echo "DOCKERFILE=./Dockerfile.pico" >> "$GITHUB_OUTPUT"

      - name: Set image tags
        id: tags
        run: |
          if [ "${{ matrix.type }}" == "default" ]; then
            TAGS="${{ needs.prepare.outputs.tags }}"
          elif [ "${{ matrix.type }}" == "micro" ]; then
            TAGS="${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:micro,${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:micro-latest,${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:micro-${{ needs.prepare.outputs.version }}"
          else
            TAGS="${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:pico,${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:pico-latest,${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:pico-${{ needs.prepare.outputs.version }}"
          fi
          echo "TAGS=$TAGS" >> "$GITHUB_OUTPUT"

      - name: Build and push Docker image
        uses: docker/build-push-action@v6
        with:
          context: .
          file: ${{ steps.dockerfile.outputs.DOCKERFILE }}
          platforms: ${{ matrix.arch == 'amd64' && 'linux/amd64' || 'linux/arm64' }}
          push: ${{ github.event_name != 'pull_request' }}
          tags: ${{ steps.tags.outputs.TAGS }}
          labels: ${{ needs.prepare.outputs.labels }}
          cache-from: |
            type=registry,ref=${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ matrix.type }}-latest
            type=gha
          cache-to: type=gha,mode=max
          build-args: |
            VERSION=${{ needs.prepare.outputs.version }}
            GitCommit=${{ needs.prepare.outputs.git_commit }}
            BuildTime=${{ needs.prepare.outputs.build_time }}