name: Build (and tag) Images

on:
  push:
  workflow_dispatch:

jobs:
  build:
    runs-on: docker
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4

      - name: Check Docker CLI and daemon
        run: |
          if ! command -v docker >/dev/null 2>&1; then
            echo "::error::docker CLI not found in PATH on this runner"
            exit 1
          fi

          if ! docker info >/dev/null 2>&1; then
            echo "::error::docker daemon is not reachable (check /var/run/docker.sock or DOCKER_HOST)"
            docker version || true
            env | grep '^DOCKER' || true
            ls -l /var/run/docker.sock || true
            exit 1
          fi

      - name: Login to Container Registry
        if: github.event_name == 'push'
        run: |
          echo "${{ secrets.REGISTRY_TOKEN }}" | docker login git.hamburg.ccc.de -u "${{ secrets.REGISTRY_USERNAME }}" --password-stdin
      
      - name: Set image tags
        id: vars
        run: |
          if [ "${{ github.ref_name }}" = "main" ] && [ "${{ github.event_name }}" = "push" ]; then
            echo "tag=latest" >> $GITHUB_OUTPUT
          else
            # renovate creates sub branches with `/`; these break the tagging in the build process
            echo tag=$(echo "${{ github.ref_name }}" | sed 's/[^a-zA-Z0-9._-]/_/g') >> $GITHUB_OUTPUT
          fi

      - name: Build web image
        run: |
          docker build -f ./Containerfile -t git.hamburg.ccc.de/ccchh/sunders/web:${{ steps.vars.outputs.tag }} .
        working-directory: ./web

      - name: Build data_handler image
        run: |
          docker build -f ./Containerfile -t git.hamburg.ccc.de/ccchh/sunders/data_handler:${{ steps.vars.outputs.tag }} .
        working-directory: ./data_handler

      - name: Push images to Container Registry
        run: |
          docker push git.hamburg.ccc.de/ccchh/sunders/web:${{ steps.vars.outputs.tag }}
          docker push git.hamburg.ccc.de/ccchh/sunders/data_handler:${{ steps.vars.outputs.tag }}
        if: github.event_name == 'push'

      - name: Update docker-compose.yml image tags
        run: |
          sed -i "s/:latest/:${{ steps.vars.outputs.tag }}/g" docker-compose.yml

      - name: Start Docker Compose services
        run: |
          docker compose up -d --wait
          docker compose down