name: Build mailcow Docker Images

on:
  push:
    branches: [ "master", "staging" ]
  workflow_dispatch:

permissions:
  contents: read # to fetch code (actions/checkout)

jobs:
  targets:
      name: Generate targets list from provided bake file
      runs-on: ubuntu-latest
      outputs:
        matrix: ${{ steps.targets.outputs.matrix }}
      steps:
      - name: Checkout
        uses: actions/checkout@v3
      
      - name: Prepair Image Builds
        run: |
          cp -v helper-scripts/docker-compose.override.yml.d/BUILD_FLAGS/docker-compose.override.yml docker-compose.preride.yml
          docker compose -f docker-compose.yml -f docker-compose.preride.yml config > docker-compose.override.yml
          rm -v docker-compose.yml && mv -v docker-compose.override.yml docker-compose.yml
        
      - name: Create matrix
        id: targets
        run: |
          docker buildx bake --print
          TARGETS=$(docker buildx bake --print | jq -cr ".group.default.targets")
          echo "matrix=$TARGETS" >> $GITHUB_OUTPUT  
        
      - name: Show matrix
        run: |
          echo ${{ steps.targets.outputs.matrix }}
      
      
  build:
      name: Build
      runs-on: ubuntu-latest
      needs:
      - targets
      
      strategy:
        fail-fast: true
        matrix:
          target: ${{ fromJson(needs.targets.outputs.matrix) }}
     
      steps:
       - name: Checkouts
         uses: actions/checkout@v3
      
       - name: Prepair Image Builds
         run: |
          cp -v helper-scripts/docker-compose.override.yml.d/BUILD_FLAGS/docker-compose.override.yml docker-compose.preride.yml
          docker compose -f docker-compose.yml -f docker-compose.preride.yml config > docker-compose.override.yml
          rm -v docker-compose.yml && mv -v docker-compose.override.yml docker-compose.yml
          
       - name: Push Images using BuildX Bake
         uses: docker/bake-action@v2
         with:
           targets: ${{ matrix.target }}
           push: false
           set: |
             *.platform=linux/amd64,linux/arm64