name: Auto Add Commits to Release Notes

on:
  release:
    types: [published]

jobs:
  build-release-notes:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout code
        uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Get previous release tag
        id: prev_tag
        run: |
          # 强制获取所有标签（防止标签未被拉取）
          git fetch --tags
          
          # 尝试获取上一个标签
          PREV_TAG=$(git describe --tags --abbrev=0 HEAD^ 2>/dev/null)
          
          # 严格验证是否为有效标签（非空且存在于标签列表中）
          if [ -n "$PREV_TAG" ] && git tag --list | grep -q "^$PREV_TAG$"; then
            : # 有效标签，不做处理
          else
            PREV_TAG="initial-commit"
          fi
          
          # 彻底清理输出值（移除所有特殊字符）
          echo "prev_tag=$(echo "$PREV_TAG" | tr -d '\n')" >> "$GITHUB_OUTPUT"

      - name: Generate commit log
        id: commit_log
        run: |
          if [ "${{ steps.prev_tag.outputs.prev_tag }}" = "initial-commit" ]; then
            COMMIT_LOG=$(git log --pretty=format:"- [%h] %s" --reverse)
          else
            COMMIT_LOG=$(git log ${{ steps.prev_tag.outputs.prev_tag }}..HEAD --pretty=format:"- [%h] %s" --reverse)
          fi
          COMMIT_LOG="${COMMIT_LOG//$'\n'/\\n}"
          echo "commit_log=$COMMIT_LOG" >> "$GITHUB_OUTPUT"

      - name: Update release notes
        uses: actions/github-script@v7
        with:
          github-token: ${{ secrets.GITHUB_TOKEN }}
          script: |
            const { data: release } = await github.rest.repos.getRelease({
              owner: context.repo.owner,
              repo: context.repo.repo,
              release_id: context.payload.release.id
            });
            const newBody = `${release.body || ''}\n\n## 本次更新 Commit 记录\n${{ steps.commit_log.outputs.commit_log }}`;
            await github.rest.repos.updateRelease({
              owner: context.repo.owner,
              repo: context.repo.repo,
              release_id: context.payload.release.id,
              body: newBody
            });