name: Deploy Docs

# 触发条件：
#   - PR 修改 docs-site/ 时执行类型检查和构建
#   - 推送 main 时构建并部署 GitHub Pages
#   - 手动触发（在 Actions 页面）
on:
  pull_request:
    branches:
      - main
    paths:
      - 'docs-site/**'
      - '.github/workflows/docs.yml'
  push:
    branches:
      - main
    paths:
      - 'docs-site/**'
      - '.github/workflows/docs.yml'
  workflow_dispatch:

# 默认只读；Pages 写权限仅授予部署任务。
permissions:
  contents: read

# 同一分支只保留最新一次构建，避免旧提交覆盖新结果。
concurrency:
  group: docs-${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true

jobs:
  build:
    name: Build Docs
    runs-on: ubuntu-latest
    timeout-minutes: 20
    defaults:
      run:
        working-directory: docs-site
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Setup Node.js
        uses: actions/setup-node@v4
        with:
          node-version: '24'
          cache: 'npm'
          cache-dependency-path: docs-site/package-lock.json

      - name: Install dependencies
        run: npm ci

      - name: Type check
        run: npm run typecheck

      - name: Build site
        run: npm run build

      - name: Upload artifact
        if: github.event_name != 'pull_request'
        uses: actions/upload-pages-artifact@v3
        with:
          path: docs-site/build

  deploy:
    name: Deploy Docs
    if: github.event_name != 'pull_request'
    needs: build
    runs-on: ubuntu-latest
    timeout-minutes: 10
    permissions:
      pages: write
      id-token: write
    environment:
      name: github-pages
      url: ${{ steps.deployment.outputs.page_url }}
    steps:
      - name: Deploy to GitHub Pages
        id: deployment
        uses: actions/deploy-pages@v4