name: Generate Star History

on:
  schedule:
    - cron: '0 0 * * *' # 每天 UTC 零点自动触发执行
  workflow_dispatch: # 允许您在 GitHub 网页上手动点击运行

# 👇 [核心修复] 显式向 GitHub 申请对代码库的写入权限
permissions:
  contents: write

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout Code
        uses: actions/checkout@v4

      - name: Fetch Star History SVG (Dual Engine)
        run: |
          mkdir -p data
          echo "🚀 [Action] 正在尝试从主引擎拉取星标趋势图..."
          HTTP_CODE=$(curl -sL -w "%{http_code}" "https://api.star-history.com/svg?repos=${{ github.repository }}&type=Date" -o data/star_history.svg)
          
          if [ "$HTTP_CODE" -ne 200 ]; then
            echo "⚠️ [Warning] 主引擎响应异常 (HTTP $HTTP_CODE)！正在无缝切换至备用引擎..."
            curl -sL "https://stars.medv.io/${{ github.repository }}.svg" -o data/star_history.svg
          fi
          echo "✅ [Success] 星标趋势图拉取完毕！"

      - name: Commit & Push Changes
        run: |
          git config --local user.email "41898282+github-actions[bot]@users.noreply.github.com"
          git config --local user.name "github-actions[bot]"
          git add data/star_history.svg
          git commit -m "chore: 自动化更新 Star 趋势图 (Native Curl 双擎版)" || exit 0
          git push origin main