name: Publish Docker Image

on:
  push:
    branches:
      - main
      - dev
    paths:
      - "Dockerfile"
      - ".dockerignore"
      - "app/**"
      - "components/**"
      - "contexts/**"
      - "hooks/**"
      - "lib/**"
      - "stores/**"
      - "locales/**"
      - "public/**"
      - "package.json"
      - "package-lock.json"
      - ".github/workflows/docker-publish.yml"
  workflow_dispatch:

jobs:
  prepare:
    runs-on: ubuntu-latest
    outputs:
      image_name: ${{ steps.set.outputs.image_name }}
    steps:
      - name: Set image name
        id: set
        run: |
          if [ "${{ github.ref_name }}" = "main" ]; then
            echo "image_name=ghcr.io/${{ github.repository }}-beta" >> $GITHUB_OUTPUT
          else
            echo "image_name=ghcr.io/${{ github.repository }}-${{ github.ref_name }}" >> $GITHUB_OUTPUT
          fi

  build:
    needs: prepare
    strategy:
      fail-fast: false
      matrix:
        include:
          - platform: linux/amd64
            runner: ubuntu-latest
          - platform: linux/arm64
            runner: ubuntu-24.04-arm
    runs-on: ${{ matrix.runner }}
    permissions:
      contents: read
      packages: write

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

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

      - name: Log in to GHCR
        uses: docker/login-action@v3
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Extract metadata
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ${{ needs.prepare.outputs.image_name }}

      - name: Build and push by digest
        id: build
        uses: docker/build-push-action@v6
        with:
          context: .
          platforms: ${{ matrix.platform }}
          labels: ${{ steps.meta.outputs.labels }}
          build-args: |
            GIT_COMMIT=${{ github.sha }}
          outputs: type=image,name=${{ needs.prepare.outputs.image_name }},push-by-digest=true,name-canonical=true,push=true
          cache-from: type=gha,scope=${{ matrix.platform }}
          cache-to: type=gha,mode=max,scope=${{ matrix.platform }}

      - 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-${{ matrix.platform == 'linux/amd64' && 'amd64' || 'arm64' }}
          path: /tmp/digests/*
          if-no-files-found: error
          retention-days: 1

  merge:
    runs-on: ubuntu-latest
    needs: [prepare, build]
    permissions:
      contents: read
      packages: write

    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 GHCR
        uses: docker/login-action@v3
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Extract metadata
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ${{ needs.prepare.outputs.image_name }}
          tags: |
            type=raw,value=latest
            type=sha

      - name: Create manifest list and push
        working-directory: /tmp/digests
        run: |
          docker buildx imagetools create $(jq -cr '.tags | map("-t " + .) | join(" ")' <<< "$DOCKER_METADATA_OUTPUT_JSON") \
            $(printf '${{ needs.prepare.outputs.image_name }}@sha256:%s ' *)

      - name: Inspect image
        run: |
          docker buildx imagetools inspect ${{ needs.prepare.outputs.image_name }}:${{ steps.meta.outputs.version }}