name: Build and Push Docker Images

on:
  pull_request:
    branches:
      - main
      - dev
  release:
    types:
      - published
  workflow_dispatch:
    inputs:
      push:
        description: Push images to registry
        required: false
        type: boolean
        default: false

env:
  REGISTRY: ghcr.io

permissions:
  contents: read
  packages: write

jobs:
  build:
    runs-on: ubuntu-latest
    strategy:
      matrix:
        image: [backend, frontend]
    steps:
      - name: Checkout repository
        uses: actions/checkout@v5

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

      - name: Log in to Container Registry
        if: github.event_name != 'workflow_dispatch' || github.event_name == 'workflow_dispatch' && github.event.inputs.push == 'true'
        uses: docker/login-action@v3
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.repository_owner }}
          # Using PAT as a hack due to issues with GITHUB_TOKEN and package permissions
          # This should be reverted to use GITHUB_TOKEN once a solution is discovered.
          password: ${{ secrets.GHCR_PAT }}

      - name: Extract metadata (tags, labels)
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ${{ env.REGISTRY }}/${{ github.repository_owner }}/patchmon-${{ matrix.image }}
          tags: |
            type=ref,event=pr
            type=semver,pattern={{version}}
            type=semver,pattern={{major}}.{{minor}}
            type=semver,pattern={{major}}
            type=raw,value=latest,enable={{is_default_branch}}

      - name: Build and push ${{ matrix.image }} image
        if: github.event_name != 'workflow_dispatch' || github.event_name == 'workflow_dispatch' && github.event.inputs.push == 'true'
        uses: docker/build-push-action@v6
        with:
          context: .
          file: docker/${{ matrix.image }}.Dockerfile
          platforms: linux/amd64,linux/arm64
          push: true
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          cache-from: type=gha,scope=${{ matrix.image }}
          cache-to: type=gha,mode=max,scope=${{ matrix.image }}