name: Build and Push Docker Images

on:
  push:
    branches: [ main, ci ]
    paths:
      - '*/Dockerfile'
      - '.gitea/workflows/docker-build.yml'

jobs:
  build:
    runs-on: ubuntu-latest
    container: git.hofer.link/philipp/ci-images:rust-latest
    steps:
      - name: Checkout code
        uses: actions/checkout@v3

      - name: Login to Gitea Container Registry
        uses: docker/login-action@v2
        with:
          registry: git.hofer.link
          username: ${{ secrets.GITEA_USERNAME }}
          password: ${{ secrets.GITEA_PASSWORD }}

      - name: Find changed Dockerfiles
        id: find-changes
        run: |
          # Get list of changed files
          CHANGED_FILES=$(git diff --name-only ${{ github.event.before }} ${{ github.sha }} || git diff --name-only HEAD~1 HEAD)

          # Find directories with changed Dockerfiles
          for file in $CHANGED_FILES; do
            if [[ $file == */Dockerfile ]]; then
              dir=$(echo $file | sed 's/\/Dockerfile$//')
              echo "Building image for directory: $dir"

              # Extract image name from directory
              IMAGE_NAME=$(basename $dir)
              echo "Building image: $IMAGE_NAME"

              # Build and push the Docker image
              docker build -t git.hofer.link/philipp/ci-images:$IMAGE_NAME $dir
              docker push git.hofer.link/philipp/ci-images:$IMAGE_NAME
            fi
          done