name: CI

on:
  push:
    branches: [main, develop]
  pull_request:
    branches: [main, develop]

concurrency:
  group: ci-${{ github.ref }}
  cancel-in-progress: true

jobs:
  build-and-test:
    name: Build & Test (Node ${{ matrix.node-version }})
    runs-on: ubuntu-latest
    strategy:
      matrix:
        node-version: [18.x, 20.x, 22.x]

    steps:
      - uses: actions/checkout@v4

      - name: Setup Node.js ${{ matrix.node-version }}
        uses: actions/setup-node@v4
        with:
          node-version: ${{ matrix.node-version }}
          cache: 'npm'

      - name: Install dependencies
        run: npm ci

      - name: Type check
        run: npm run type-check

      - name: Build
        run: npm run build

      - name: Unit & integration tests
        run: npm test

      - name: Check build artifacts
        run: |
          test -f dist/index.js
          test -f dist/server.js
          test -d dist/frontend

      - name: Upload build artifacts
        if: matrix.node-version == '20.x'
        uses: actions/upload-artifact@v4
        with:
          name: build-artifacts
          path: dist/
          retention-days: 7

  lint-check:
    name: Lint Check
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - name: Setup Node.js
        uses: actions/setup-node@v4
        with:
          node-version: '20.x'
          cache: 'npm'

      - name: Install dependencies
        run: npm ci

      - name: Check for TypeScript errors
        run: npm run type-check

  e2e:
    name: E2E Tests
    runs-on: ubuntu-latest
    needs: build-and-test
    steps:
      - uses: actions/checkout@v4

      - name: Setup Node.js
        uses: actions/setup-node@v4
        with:
          node-version: '20.x'
          cache: 'npm'

      - name: Install dependencies
        run: npm ci

      - name: Build
        run: npm run build

      - name: Install Playwright browsers
        run: ./node_modules/.bin/playwright install --with-deps chromium

      - name: Run E2E tests
        run: npm run test:e2e
        env:
          EXCALIDRAW_DB_PATH: /tmp/excalidraw-e2e-ci.db

      - name: Upload Playwright report
        if: failure()
        uses: actions/upload-artifact@v4
        with:
          name: playwright-report
          path: playwright-report/
          retention-days: 7

  ci-status:
    runs-on: ubuntu-latest
    continue-on-error: false
    name: CI Status Check
    needs: [build-and-test, lint-check, e2e]
    if: always()
    permissions:
      statuses: write
    steps:
      - name: Failed
        id: failed
        if: contains(needs.*.result, 'failure') || contains(needs.*.result, 'cancelled')
        run: |
          curl -X POST -H "Content-Type: application/json" -H "Authorization: token ${{ github.token }}" \
          -d '{ "state" : "failure" , "context" : "github/ci-status-check" , "description" : "CI checks failed", "target_url" : "https://github.com/${{ github.repository }}/actions/runs/${{ github.run_id }}" }' \
          https://api.github.com/repos/${{ github.repository }}/statuses/${{ github.sha }}
          exit 1
      - name: Success
        if: steps.failed.conclusion == 'skipped'
        run: |
          curl -X POST -H "Content-Type: application/json" -H "Authorization: token ${{ github.token }}" \
          -d '{ "state" : "success" , "context" : "github/ci-status-check" , "description" : "CI checks passed", "target_url" : "https://github.com/${{ github.repository }}/actions/runs/${{ github.run_id }}" }' \
          https://api.github.com/repos/${{ github.repository }}/statuses/${{ github.sha }}