name: CI

on:
  pull_request:
    branches: [master]
    paths-ignore:
      - 'packages/docs/**'
      - 'openspec/**'
      - '*.md'

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

jobs:
  check:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - name: Pull LFS files
        run: git lfs pull

      - uses: oven-sh/setup-bun@v2

      - uses: actions/cache@v4
        with:
          path: ~/.bun/install/cache
          key: bun-${{ runner.os }}-${{ hashFiles('bun.lock') }}
          restore-keys: bun-${{ runner.os }}-

      - run: bun install --frozen-lockfile

      - name: Lint
        run: bun run lint

      - name: Typecheck
        run: bunx tsgo --noEmit

      - name: Unit tests
        run: bun test tests/engine/
        env:
          BUN_HEAVY_TESTS: '1'

      - name: Copy-paste detection
        run: bun run test:dupes

  preview:
    runs-on: ubuntu-latest
    permissions:
      contents: read
      deployments: write
      pull-requests: write
    environment:
      name: preview
      url: ${{ steps.deploy.outputs.deployment-url }}
    steps:
      - uses: actions/checkout@v4

      - uses: oven-sh/setup-bun@v2

      - uses: actions/cache@v4
        with:
          path: ~/.bun/install/cache
          key: bun-${{ runner.os }}-${{ hashFiles('bun.lock') }}
          restore-keys: bun-${{ runner.os }}-

      - run: bun install --frozen-lockfile

      - run: bun run build

      - uses: cloudflare/wrangler-action@v3
        id: deploy
        with:
          apiToken: ${{ secrets.CLOUDFLARE_API_TOKEN }}
          accountId: ${{ secrets.CLOUDFLARE_ACCOUNT_ID }}
          command: pages deploy dist --project-name=openpencil-app --branch=${{ github.head_ref }}

      - name: Comment preview URL
        uses: actions/github-script@v7
        with:
          script: |
            const url = '${{ steps.deploy.outputs.deployment-url }}';
            const marker = '<!-- preview-deploy -->';
            const body = `${marker}\n🔗 Preview: ${url}`;
            const { data: comments } = await github.rest.issues.listComments({
              ...context.repo, issue_number: context.issue.number
            });
            const existing = comments.find(c => c.body.includes(marker));
            if (existing) {
              await github.rest.issues.updateComment({
                ...context.repo, comment_id: existing.id, body
              });
            } else {
              await github.rest.issues.createComment({
                ...context.repo, issue_number: context.issue.number, body
              });
            }