name: build
on:
  push:
    branches: [main]          # ← PODMIEŃ na swoją gałąź
jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - name: Login do rejestru
        run: echo "${{ secrets.REGISTRY_TOKEN }}" | docker login gitea.czernobog.pl -u gitea --password-stdin

      # Lekkie obrazy k3s-owe — budowane zawsze
      - name: Build k3s images (librarian, bot)
        run: |
          TAG=${GITHUB_SHA::8}
          docker build -f docker/Dockerfile.librarian -t gitea.czernobog.pl/gitea/conjurer-librarian:$TAG .
          docker push  gitea.czernobog.pl/gitea/conjurer-librarian:$TAG
          docker build -f docker/Dockerfile.bot       -t gitea.czernobog.pl/gitea/conjurer-bot:$TAG .
          docker push  gitea.czernobog.pl/gitea/conjurer-bot:$TAG

      # Docker-owe: musician i share lekkie, radio CIĘŻKIE (opam+OCaml+liquidsoap)
      - name: Build docker-stack images (musician, share)
        run: |
          TAG=${GITHUB_SHA::8}
          docker build -f docker/Dockerfile.musician -t gitea.czernobog.pl/gitea/conjurer-musician:$TAG .
          docker push  gitea.czernobog.pl/gitea/conjurer-musician:$TAG
          docker build -f docker/Dockerfile.share    -t gitea.czernobog.pl/gitea/conjurer-share:$TAG .
          docker push  gitea.czernobog.pl/gitea/conjurer-share:$TAG

      # RADIO: budowane TYLKO gdy zmieniło się coś istotnego (oszczędza ~15 min na push)
      - name: Czy radio wymaga rebuildu?
        id: radio_changed
        run: |
          if git diff --name-only HEAD~1 HEAD | grep -qE "docker/Dockerfile.radio|docker/entrypoint.radio.sh|docker/icecast.xml.tpl|docker/pulse-system.pa|conjurer_musician/radio_conjurer.liq|conjurer_betoniarka/"; then
            echo "build=yes" >> $GITHUB_OUTPUT
          else
            echo "build=no" >> $GITHUB_OUTPUT
            echo "radio bez zmian — pomijam ciężki build"
          fi
      - name: Build radio
        if: steps.radio_changed.outputs.build == 'yes'
        run: |
          TAG=${GITHUB_SHA::8}
          docker build -f docker/Dockerfile.radio -t gitea.czernobog.pl/gitea/conjurer-radio:$TAG .
          docker push  gitea.czernobog.pl/gitea/conjurer-radio:$TAG

      - name: Podsumowanie
        run: echo "Zbudowano tag ${GITHUB_SHA::8}"