name: CI

on:
  push:
    branches: [main]
  pull_request:
    branches: [main]
  workflow_dispatch:
    # Run on PRs targeting main, but skip for repo owner (runs local tests)

# Skip CI for PRs authored by repo owner (they run tests locally)
# Uses PR author instead of triggering actor so rebasing by owner doesn't skip CI

env:
  PYTHON_VERSION: '3.11'
  NODE_VERSION: '22'

# Cancel in-progress runs for the same branch
concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true

# Minimum permissions for all jobs
permissions:
  contents: read

jobs:
  # ============================================================================
  # Backend Checks
  # ============================================================================

  backend-lint:
    name: Backend Lint
    runs-on: ubuntu-latest
    if: github.event_name == 'push' || github.event.pull_request.user.login != github.repository_owner
    steps:
      - uses: actions/checkout@v4

      - name: Set up Python
        uses: actions/setup-python@v5
        with:
          python-version: ${{ env.PYTHON_VERSION }}

      - name: Install ruff
        run: pip install ruff

      - name: Run ruff check
        run: ruff check backend/

      - name: Run ruff format check
        run: ruff format --check backend/

  backend-security:
    name: Backend Security
    runs-on: ubuntu-latest
    if: github.event_name == 'push' || github.event.pull_request.user.login != github.repository_owner
    continue-on-error: true
    steps:
      - uses: actions/checkout@v4

      - name: Set up Python
        uses: actions/setup-python@v5
        with:
          python-version: ${{ env.PYTHON_VERSION }}

      - name: Install dependencies
        run: |
          python -m pip install --upgrade pip
          pip install -r requirements.txt
          pip install pip-audit

      - name: Run pip-audit
        run: |
          # CVE-2026-4539: low-severity ReDoS in Pygments AdlLexer (indirect dep via mkdocs-material/pytest/rich).
          # No fix available yet. Remove --ignore-vuln once Pygments releases a patched version.
          pip-audit --desc on --ignore-vuln CVE-2026-4539

  backend-tests:
    name: Backend Tests
    runs-on: ubuntu-latest
    if: github.event_name == 'push' || github.event.pull_request.user.login != github.repository_owner
    needs: backend-lint
    steps:
      - uses: actions/checkout@v4

      - name: Set up Python
        uses: actions/setup-python@v5
        with:
          python-version: ${{ env.PYTHON_VERSION }}

      - name: Cache pip
        uses: actions/cache@v4
        with:
          path: ~/.cache/pip
          key: ${{ runner.os }}-pip-${{ hashFiles('requirements.txt') }}
          restore-keys: |
            ${{ runner.os }}-pip-

      - name: Install dependencies
        run: |
          python -m pip install --upgrade pip
          pip install -r requirements.txt
          pip install -r requirements-dev.txt

      - name: Run tests
        timeout-minutes: 10
        run: |
          cd backend
          python -m pytest tests/ -v --tb=short --timeout=60 --timeout-method=thread -n auto

  # ============================================================================
  # Frontend Checks
  # ============================================================================

  frontend-lint:
    name: Frontend Lint
    runs-on: ubuntu-latest
    if: github.event_name == 'push' || github.event.pull_request.user.login != github.repository_owner
    steps:
      - uses: actions/checkout@v4

      - name: Set up Node.js
        uses: actions/setup-node@v4
        with:
          node-version: ${{ env.NODE_VERSION }}
          cache: 'npm'
          cache-dependency-path: frontend/package-lock.json

      - name: Install dependencies
        working-directory: frontend
        run: npm ci

      - name: Run ESLint
        working-directory: frontend
        run: npm run lint

  frontend-security:
    name: Frontend Security
    runs-on: ubuntu-latest
    if: github.event_name == 'push' || github.event.pull_request.user.login != github.repository_owner
    continue-on-error: true
    steps:
      - uses: actions/checkout@v4

      - name: Set up Node.js
        uses: actions/setup-node@v4
        with:
          node-version: ${{ env.NODE_VERSION }}
          cache: 'npm'
          cache-dependency-path: frontend/package-lock.json

      - name: Install dependencies
        working-directory: frontend
        run: npm ci

      - name: Run npm audit
        working-directory: frontend
        run: |
          # Only audit production dependencies and filter out npm-internal packages.
          # npm 10.x audit/ls reports vulns in its own bundled deps (npm, tar, minimatch)
          # so we parse package-lock.json directly to get the real prod dep list.
          npm audit --omit=dev --json > /tmp/audit.json 2>/dev/null || true
          python3 -c "
          import json, sys
          data = json.load(open('/tmp/audit.json'))
          lock = json.load(open('package-lock.json'))
          prod = set()
          for path, info in lock.get('packages', {}).items():
              if path and not info.get('dev') and not info.get('devOptional'):
                  prod.add(path.split('node_modules/')[-1])
          vulns = data.get('vulnerabilities', {})
          fixable = {n: v for n, v in vulns.items()
                     if n in prod and v.get('severity') in ('high', 'critical') and v.get('fixAvailable')}
          skipped = len(vulns) - len({n: v for n, v in vulns.items() if n in prod})
          if fixable:
              for name, v in fixable.items():
                  print(f'FIXABLE {v[\"severity\"].upper()}: {name}')
              sys.exit(1)
          total = sum(1 for n, v in vulns.items() if n in prod and v.get('severity') in ('high', 'critical'))
          print(f'npm audit: {total} high/critical (0 fixable), {len(vulns)} total ({skipped} npm-internal filtered)')
          "

  frontend-typecheck:
    name: Frontend Type Check
    runs-on: ubuntu-latest
    if: github.event_name == 'push' || github.event.pull_request.user.login != github.repository_owner
    steps:
      - uses: actions/checkout@v4

      - name: Set up Node.js
        uses: actions/setup-node@v4
        with:
          node-version: ${{ env.NODE_VERSION }}
          cache: 'npm'
          cache-dependency-path: frontend/package-lock.json

      - name: Install dependencies
        working-directory: frontend
        run: npm ci

      - name: Run TypeScript check
        working-directory: frontend
        run: npx tsc --noEmit

  frontend-tests:
    name: Frontend Tests
    runs-on: ubuntu-latest
    if: github.event_name == 'push' || github.event.pull_request.user.login != github.repository_owner
    needs: [frontend-lint, frontend-typecheck]
    steps:
      - uses: actions/checkout@v4

      - name: Set up Node.js
        uses: actions/setup-node@v4
        with:
          node-version: ${{ env.NODE_VERSION }}
          cache: 'npm'
          cache-dependency-path: frontend/package-lock.json

      - name: Install dependencies
        working-directory: frontend
        run: npm ci

      - name: Run tests
        timeout-minutes: 10
        working-directory: frontend
        run: npm run test:run

  frontend-build:
    name: Frontend Build
    runs-on: ubuntu-latest
    if: github.event_name == 'push' || github.event.pull_request.user.login != github.repository_owner
    needs: [frontend-tests]
    steps:
      - uses: actions/checkout@v4

      - name: Set up Node.js
        uses: actions/setup-node@v4
        with:
          node-version: ${{ env.NODE_VERSION }}
          cache: 'npm'
          cache-dependency-path: frontend/package-lock.json

      - name: Install dependencies
        working-directory: frontend
        run: npm ci

      - name: Build
        working-directory: frontend
        run: npm run build

  # ============================================================================
  # Docker Tests (matches test_docker.sh)
  # ============================================================================

  docker-test:
    name: Docker Build
    runs-on: ubuntu-latest
    if: github.event_name == 'push' || github.event.pull_request.user.login != github.repository_owner
    timeout-minutes: 20
    needs: [backend-tests, frontend-build]
    steps:
      - uses: actions/checkout@v4

      # Test 1: Docker Build
      - name: Build production image
        run: docker build -t bambuddy:test .

      - name: Verify backend imports
        run: docker run --rm bambuddy:test python -c "import backend.app.main; print('Backend imports OK')"

      - name: Verify static files exist
        run: docker run --rm bambuddy:test test -d /app/static

      # Test 2: Backend Unit Tests in Docker
      - name: Build backend test image
        run: docker compose -f docker-compose.test.yml build backend-test

      - name: Run backend tests in Docker
        run: docker compose -f docker-compose.test.yml run --rm backend-test

      # Test 3: Frontend Unit Tests in Docker
      - name: Build frontend test image
        run: docker compose -f docker-compose.test.yml build frontend-test

      - name: Run frontend tests in Docker
        run: docker compose -f docker-compose.test.yml run --rm frontend-test

      # Test 4: Integration Tests
      - name: Build integration container
        run: docker compose -f docker-compose.test.yml build integration

      - name: Start integration container
        run: |
          docker compose -f docker-compose.test.yml up -d integration
          echo "Waiting for container to be healthy..."
          for i in {1..30}; do
            if docker compose -f docker-compose.test.yml ps integration | grep -q "healthy"; then
              echo "Container is healthy"
              break
            fi
            sleep 2
          done

      - name: Test health endpoint
        run: |
          HEALTH=$(docker compose -f docker-compose.test.yml exec -T integration curl -s http://localhost:8000/health)
          echo "$HEALTH"
          echo "$HEALTH" | grep -q "healthy"

      - name: Test API endpoint
        run: |
          docker compose -f docker-compose.test.yml exec -T integration curl -s http://localhost:8000/api/v1/settings

      - name: Test static files served
        run: |
          STATUS=$(docker compose -f docker-compose.test.yml exec -T integration curl -s -o /dev/null -w "%{http_code}" http://localhost:8000/)
          echo "Static files HTTP status: $STATUS"
          [ "$STATUS" = "200" ]

      # Test 5: Integration Test Suite (pytest)
      - name: Build integration test runner
        run: docker compose -f docker-compose.test.yml build integration-test-runner

      - name: Run integration test suite
        run: docker compose -f docker-compose.test.yml run --rm integration-test-runner

      - name: Show logs on failure
        if: failure()
        run: docker compose -f docker-compose.test.yml logs

      - name: Cleanup
        if: always()
        run: docker compose -f docker-compose.test.yml down -v --remove-orphans
