name: Optimize Assets

on:
  workflow_dispatch:  # 允许手动触发

jobs:
  optimize:
    runs-on: ubuntu-latest
    
    steps:
      - uses: actions/checkout@v3
        with:
          fetch-depth: 0  # 获取完整历史以便进行比较
      
      - name: Setup Node.js
        uses: actions/setup-node@v3
        with:
          node-version: '18'
          cache: 'npm'
      
      # 添加 FFmpeg 缓存
      - name: Cache FFmpeg
        id: cache-ffmpeg
        uses: actions/cache@v3
        with:
          path: /usr/bin/ffmpeg
          key: ${{ runner.os }}-ffmpeg
      
      - name: Install FFmpeg
        if: steps.cache-ffmpeg.outputs.cache-hit != 'true'
        run: |
          sudo apt-get update
          sudo apt-get install -y ffmpeg
      
      # 添加 node_modules 缓存
      - name: Cache node_modules
        id: cache-node-modules
        uses: actions/cache@v3
        with:
          path: node_modules
          key: ${{ runner.os }}-node-modules-${{ hashFiles('package-lock.json') }}
          restore-keys: |
            ${{ runner.os }}-node-modules-
      
      - name: Install dependencies
        if: steps.cache-node-modules.outputs.cache-hit != 'true'
        run: |
          npm install sharp
      
      - name: Optimize Images
        run: node scripts/optimize-images.js
      
      - name: Optimize Audio
        run: node scripts/optimize-audio.js
      
      - name: Check for changes
        id: check_changes
        run: |
          if [[ -n "$(git status --porcelain)" ]]; then
            echo "changes=true" >> $GITHUB_OUTPUT
          else
            echo "changes=false" >> $GITHUB_OUTPUT
          fi
      
      - name: Commit and push if changed
        if: steps.check_changes.outputs.changes == 'true'
        run: |
          git config --local user.email "github-actions[bot]@users.noreply.github.com"
          git config --local user.name "github-actions[bot]"
          git add -A
          git commit -m "Automatically optimize assets"
          git push