name: Generate Star History

on:
  schedule:
    - cron: '0 0 * * *' 
  workflow_dispatch: 

permissions:
  contents: write

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

      - name: Generate Star History SVG (Pure Local)
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          python3 -m venv venv
          source venv/bin/activate
          pip install matplotlib requests
          
          python3 - <<'PYEOF'
          import requests, os
          import matplotlib.pyplot as plt
          import matplotlib.dates as mdates
          from datetime import datetime

          token = os.environ['GITHUB_TOKEN']
          repo = '${{ github.repository }}'
          headers = {'Authorization': f'Bearer {token}', 'Accept': 'application/vnd.github.v3.star+json'}
          url = f'https://api.github.com/repos/{repo}/stargazers?per_page=100'
          dates = []

          while url:
              r = requests.get(url, headers=headers)
              if r.status_code != 200:
                  break
              data = r.json()
              if not data:
                  break
              for star in data:
                  if 'starred_at' in star:
                      dates.append(datetime.strptime(star['starred_at'], '%Y-%m-%dT%H:%M:%SZ'))
              url = r.links.get('next', {}).get('url')

          if dates:
              dates.sort()
              counts = list(range(1, len(dates) + 1))
              dates.append(datetime.utcnow())
              counts.append(counts[-1])
              
              # ==========================================
              # [视觉升级] 注入 GitHub 官方暗黑模式 UI 规范
              # ==========================================
              bg_color = '#0d1117'      # GitHub 暗黑底色
              text_color = '#c9d1d9'    # GitHub 亮灰字体
              grid_color = '#30363d'    # GitHub 边框网格色
              line_color = '#2ea44f'    # GitHub 经典成功绿
              
              fig, ax = plt.subplots(figsize=(10, 5), facecolor=bg_color)
              ax.set_facecolor(bg_color)
              
              # 设置字体颜色与坐标轴颜色
              ax.tick_params(colors=text_color)
              ax.xaxis.label.set_color(text_color)
              ax.yaxis.label.set_color(text_color)
              ax.title.set_color(text_color)
              
              # 设置边框颜色
              for spine in ax.spines.values():
                  spine.set_edgecolor(grid_color)
                  
              # 绘制核心趋势线与阴影填充
              plt.plot(dates, counts, color=line_color, linewidth=2)
              plt.fill_between(dates, counts, color=line_color, alpha=0.1)
              
              plt.title(f'{repo} Star History', fontsize=16, color=text_color, pad=15)
              plt.ylabel('Stars', fontsize=12, color=text_color)
              
              # 设置网格虚线
              plt.grid(True, linestyle='--', alpha=0.5, color=grid_color)
              plt.gca().xaxis.set_major_formatter(mdates.DateFormatter('%Y-%m-%d'))
              plt.gcf().autofmt_xdate()
              plt.tight_layout()
              
              os.makedirs('data', exist_ok=True)
              # 强制应用背景色，关闭透明度，打破隐形诅咒
              plt.savefig('data/star_history.svg', format='svg', facecolor=bg_color, transparent=False)
              print("✅ [Success] 极客暗黑风 SVG 渲染完毕！")
          PYEOF

      - 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 "style: 修复暗黑模式下坐标轴隐形问题，采用 GitHub 原生深色主题渲染图表" || exit 0
          git push origin main