release.yml

name: Release

on:
  push:
    tags:
      - 'v*'

permissions:
  contents: write
  pull-requests: read

jobs:
  release:
    name: Create Release
    runs-on: ubuntu-latest

    steps:
      - name: Checkout repository
        uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Validate version tag format
        run: |
          if ! [[ "${{ github.ref_name }}" =~ ^v[0-9]+\.[0-9]+\.[0-9]+$ ]]; then
            echo "::error::Invalid version tag format (${{ github.ref_name }}). Expected vX.Y.Z"
            exit 1
          fi

      - name: Verify versions match tag
        env:
          TAG_NAME: ${{ github.ref_name }}
        run: |
          TAG_VERSION="${TAG_NAME#v}"
          
          # Check package.json
          PACKAGE_VERSION=$(node -p "require('./package.json').version")
          if [ "$TAG_VERSION" != "$PACKAGE_VERSION" ]; then
            echo "::error::Tag version ($TAG_VERSION) does not match package.json version ($PACKAGE_VERSION)"
            exit 1
          fi
          
          # Check gemini-extension.json
          EXTENSION_VERSION=$(node -p "require('./gemini-extension.json').version")
          if [ "$TAG_VERSION" != "$EXTENSION_VERSION" ]; then
            echo "::error::Tag version ($TAG_VERSION) does not match gemini-extension.json version ($EXTENSION_VERSION)"
            exit 1
          fi
          
          # Check .gemini-plugin/plugin.json
          PLUGIN_VERSION=$(node -p "require('./.gemini-plugin/plugin.json').version")
          if [ "$TAG_VERSION" != "$PLUGIN_VERSION" ]; then
            echo "::error::Tag version ($TAG_VERSION) does not match .gemini-plugin/plugin.json version ($PLUGIN_VERSION)"
            exit 1
          fi
          
          echo "All versions match tag $TAG_NAME"

      - name: Get last tag and date
        id: get_last_tag
        run: |
          # Get the tag before the current one
          TAG_LIST=$(git tag --list 'v[0-9]*' --sort=-v:refname)
          LAST_TAG=$(echo "$TAG_LIST" | sed -n '2p')
          
          if [ -z "$LAST_TAG" ]; then
            LAST_TAG="v0.0.0"
            TAG_DATE="1970-01-01T00:00:00Z"
          else
            TAG_DATE=$(git log -1 --format=%aI "$LAST_TAG" || date -Iseconds)
          fi
          echo "last_tag=$LAST_TAG" >> $GITHUB_OUTPUT
          echo "last_tag_date=$TAG_DATE" >> $GITHUB_OUTPUT

      - name: Generate Changelog from merged PRs
        id: changelog
        uses: actions/github-script@v6
        with:
          script: |
            const { data: prs } = await github.rest.pulls.list({
              owner: context.repo.owner,
              repo: context.repo.repo,
              state: "closed",
              base: "main",
              per_page: 100
            });

            const since = new Date("${{ steps.get_last_tag.outputs.last_tag_date }}");
            const mergedPRs = prs.filter(pr => pr.merged_at && new Date(pr.merged_at) > since);

            let changelog = "## What's Changed in ${{ github.ref_name }}\n\n";
            if (mergedPRs.length === 0) {
              changelog += "_No pull requests merged since last release._";
            } else {
              const formatted = [];
              for (const pr of mergedPRs) {
                let body = pr.body?.trim();
                if (!body) {
                  // PR body가 없으면 커밋 목록으로 대체
                  try {
                    const { data: commits } = await github.rest.pulls.listCommits({
                      owner: context.repo.owner,
                      repo: context.repo.repo,
                      pull_number: pr.number,
                      per_page: 20
                    });
                    body = commits.map(c => `- ${c.commit.message.split('\n')[0]}`).join('\n');
                  } catch {
                    body = '_No description provided._';
                  }
                }
                formatted.push(`### ${pr.title} (#${pr.number}) by @${pr.user.login}\n\n${body}`);
              }
              changelog += formatted.join("\n\n---\n\n");
            }
            
            const fs = require('fs');
            fs.writeFileSync('RELEASE_NOTES.md', changelog);

      - name: Create GitHub Release
        uses: softprops/action-gh-release@153bb8e04406b158c6c84fc1615b65b24149a1fe # v2
        with:
          tag_name: ${{ github.ref_name }}
          name: ${{ github.ref_name }}
          body_path: RELEASE_NOTES.md