name: ci

on:
  push:
    paths:
      - "back001/**"
      - "front001/**"
      - ".forgejo/workflows/**"
      - "ci/**"
  pull_request:

jobs:
  changes:
    runs-on: docker
    steps:
      - uses: actions/checkout@v4

      - id: filter
        name: Detect changes
        run: |
          python - <<'PY'
          import json
          import os
          import subprocess
          import sys

          event_path = os.environ.get("GITHUB_EVENT_PATH")
          base = None
          head = None
          if event_path and os.path.exists(event_path):
            with open(event_path, "r", encoding="utf-8") as handle:
              data = json.load(handle)
            if "pull_request" in data:
              base = data["pull_request"]["base"]["sha"]
              head = data["pull_request"]["head"]["sha"]
            else:
              base = data.get("before")
              head = data.get("after") or data.get("checkout_sha")

          if not head:
            head = os.environ.get("GITHUB_SHA")

          if not base or base == "0000000000000000000000000000000000000000":
            try:
              subprocess.check_call(
                ["git", "rev-parse", f"{head}^"],
                stdout=subprocess.DEVNULL,
                stderr=subprocess.DEVNULL,
              )
              base = f"{head}^"
            except Exception:
              base = None

          if base:
            diff_cmd = ["git", "diff", "--name-only", base, head]
          else:
            diff_cmd = ["git", "ls-files"]

          files = subprocess.check_output(diff_cmd, text=True).splitlines()
          backend = False
          frontend = False
          for path in files:
            if path.startswith("back001/") or path.startswith(".forgejo/workflows/") or path.startswith("ci/"):
              backend = True
            if path.startswith("front001/") or path.startswith(".forgejo/workflows/") or path.startswith("ci/"):
              frontend = True

          out_path = os.environ.get("GITHUB_OUTPUT")
          if not out_path:
            print("GITHUB_OUTPUT not set", file=sys.stderr)
            sys.exit(1)
          with open(out_path, "a", encoding="utf-8") as handle:
            handle.write(f"backend={'true' if backend else 'false'}\n")
            handle.write(f"frontend={'true' if frontend else 'false'}\n")
          PY
    outputs:
      backend: ${{ steps.filter.outputs.backend }}
      frontend: ${{ steps.filter.outputs.frontend }}

  backend:
    needs: changes
    if: needs.changes.outputs.backend == 'true'
    runs-on: docker
    container:
      image: forgejo.okit.pl/oskar/ci-gradle-node:8.7-jdk17
    steps:
      - uses: actions/checkout@v4

      - uses: actions/cache@v4
        with:
          path: |
            /home/gradle/.gradle/caches
            /home/gradle/.gradle/wrapper
          key: gradle-${{ runner.os }}-${{ hashFiles('back001/**/*.gradle*', 'back001/**/gradle-wrapper.properties') }}
          restore-keys: |
            gradle-${{ runner.os }}-

      - name: Test + build (backend)
        working-directory: back001
        run: ./gradlew test build --no-daemon

  flutter:
    needs: changes
    if: needs.changes.outputs.frontend == 'true'
    runs-on: docker
    container:
      image: forgejo.okit.pl/oskar/ci-flutter-node:stable
    steps:
      - uses: actions/checkout@v4

      - uses: actions/cache@v4
        with:
          path: |
            /root/.pub-cache
          key: pub-${{ runner.os }}-${{ hashFiles('front001/mosenioring/pubspec.lock') }}
          restore-keys: |
            pub-${{ runner.os }}-

      - name: Pub get
        working-directory: front001/mosenioring
        run: flutter pub get

      - name: Analyze (non-blocking for now)
        working-directory: front001/mosenioring
        run: flutter analyze || true

      - name: Test
        working-directory: front001/mosenioring
        run: flutter test