name: Build and Push Docker Image

on:
  push:
    branches: [ main ]
    tags: [ 'v*' ]
  pull_request:
    branches: [ main ]
  workflow_dispatch:
    inputs:
      tag:
        description: 'Image tag (default: latest)'
        required: false
        default: 'latest'

env:
  REGISTRY: ghcr.io
  IMAGE_NAME: ${{ github.repository }}

jobs:
  build:
    strategy:
      matrix:
        include:
          - platform: linux/amd64
            runner: ubuntu-latest
            suffix: amd64
          - platform: linux/arm64
            runner: ubuntu-24.04-arm
            suffix: arm64
    runs-on: ${{ matrix.runner }}
    permissions:
      contents: read
      packages: write

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

      - name: Setup Node.js
        uses: actions/setup-node@v4
        with:
          node-version: '22'
          cache: 'npm'

      - name: Install dependencies
        run: npm ci

      - name: Run Tests
        run: npm test

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

      - name: Log in to Container Registry
        if: github.event_name != 'pull_request'
        uses: docker/login-action@v3
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Extract metadata
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
          tags: |
            type=ref,event=branch,suffix=-${{ matrix.suffix }}
            type=ref,event=pr,suffix=-${{ matrix.suffix }}
            type=semver,pattern={{version}},suffix=-${{ matrix.suffix }}
            type=sha,prefix={{branch}}-,suffix=-${{ matrix.suffix }}

      - name: Build and push Docker image
        uses: docker/build-push-action@v5
        with:
          context: .
          push: ${{ github.event_name != 'pull_request' }}
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          cache-from: type=gha,scope=${{ matrix.suffix }}
          cache-to: type=gha,mode=max,scope=${{ matrix.suffix }}
          platforms: ${{ matrix.platform }}

  manifest:
    needs: build
    if: github.event_name != 'pull_request'
    runs-on: ubuntu-latest
    permissions:
      contents: read
      packages: write

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

      - name: Extract metadata
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
          tags: |
            type=ref,event=branch
            type=semver,pattern={{version}}
            type=semver,pattern={{major}}.{{minor}}
            type=semver,pattern={{major}}
            type=sha,prefix={{branch}}-
            type=raw,value=${{ inputs.tag }},enable=${{ github.event_name == 'workflow_dispatch' }}

      - name: Create and push multi-arch manifest
        run: |
          TAGS="${{ steps.meta.outputs.tags }}"
          for TAG in $TAGS; do
            echo "Creating manifest for $TAG"
            docker manifest create "$TAG" \
              "${TAG}-amd64" \
              "${TAG}-arm64" || true
            docker manifest push "$TAG" || true
          done