# BlackRoad OS — Pave Tomorrow.
# Universal Linter — auto-detects language
name: Lint & Format

on:
  push:
    branches: [main]
  pull_request:

jobs:
  detect:
    runs-on: ubuntu-latest
    outputs:
      has_js: ${{ steps.check.outputs.has_js }}
      has_py: ${{ steps.check.outputs.has_py }}
      has_sh: ${{ steps.check.outputs.has_sh }}
      has_go: ${{ steps.check.outputs.has_go }}
    steps:
      - uses: actions/checkout@v4
      - id: check
        run: |
          echo "has_js=$(test -f package.json && echo true || echo false)" >> $GITHUB_OUTPUT
          echo "has_py=$(test -f requirements.txt -o -f setup.py -o -f pyproject.toml && echo true || echo false)" >> $GITHUB_OUTPUT
          echo "has_sh=$(find . -name '*.sh' -maxdepth 3 | head -1 | grep -q . && echo true || echo false)" >> $GITHUB_OUTPUT
          echo "has_go=$(test -f go.mod && echo true || echo false)" >> $GITHUB_OUTPUT

  js-lint:
    needs: detect
    if: needs.detect.outputs.has_js == 'true'
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: actions/setup-node@v4
        with:
          node-version: '20'
      - run: npm ci
      - run: npx eslint . --max-warnings 0 || true
      - run: npx prettier --check . 2>/dev/null || true

  py-lint:
    needs: detect
    if: needs.detect.outputs.has_py == 'true'
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: actions/setup-python@v5
        with:
          python-version: '3.12'
      - run: pip install flake8 black
      - run: flake8 . --max-line-length 120 --count --show-source
      - run: black --check .

  sh-lint:
    needs: detect
    if: needs.detect.outputs.has_sh == 'true'
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - run: sudo apt-get install -y shellcheck
      - run: find . -name '*.sh' -exec shellcheck {} +

  go-lint:
    needs: detect
    if: needs.detect.outputs.has_go == 'true'
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: actions/setup-go@v5
        with:
          go-version: 'stable'
      - run: go vet ./...
      - run: test -z "$(gofmt -l .)"