finalize-release.yml

name: Finalize GPULlama3 Release

on:
  pull_request:
    types: [closed]
    branches: [main]
  workflow_dispatch:
    inputs:
      version:
        description: 'Release version to tag (e.g., 0.2.3)'
        required: true
        type: string

jobs:
  create-release-tag:
    # Run when release PR merges OR manual trigger
    if: |
      (github.event.pull_request.merged == true && startsWith(github.event.pull_request.head.ref, 'release/')) ||
      github.event_name == 'workflow_dispatch'
    runs-on: [self-hosted, Linux, x64]
    permissions:
      contents: write
    timeout-minutes: 10

    outputs:
      version: ${{ steps.get_version.outputs.version }}
    
    steps:
      - name: Get version
        id: get_version
        run: |
          if [ "${{ github.event_name }}" == "workflow_dispatch" ]; then
            echo "version=${{ inputs.version }}" >> $GITHUB_OUTPUT
          else
            BRANCH="${{ github.event.pull_request.head.ref }}"
            echo "version=${BRANCH#release/}" >> $GITHUB_OUTPUT
          fi

      - name: Checkout main
        uses: actions/checkout@v4
        with:
          ref: ${{ inputs.tag || github.ref }}
          fetch-depth: 0

      - name: Configure Git
        run: |
          git config user.name "github-actions[bot]"
          git config user.email "github-actions[bot]@users.noreply.github.com"

      - name: Create and push tag
        run: |
          VERSION="${{ steps.get_version.outputs.version }}"
          git tag -a "v${VERSION}" -m "Release ${VERSION}"
          git push origin "v${VERSION}"
          echo "✅ Created tag v${VERSION}"

      - name: Extract changelog for release notes
        id: changelog
        run: |
          VERSION="${{ steps.get_version.outputs.version }}"
          CHANGELOG_FILE="CHANGELOG.md"
          
          if [ -f "$CHANGELOG_FILE" ]; then
            # Extract section for this version
            awk -v ver="## \\[${VERSION}\\]" '
              $0 ~ ver { found=1; next }
              found && /^## \[/ { exit }
              found { print }
            ' "$CHANGELOG_FILE" > /tmp/release_notes.txt
            
            if [ -s /tmp/release_notes.txt ]; then
              echo "Found changelog section for ${VERSION}"
            else
              echo "See CHANGELOG.md for details." > /tmp/release_notes.txt
            fi
          else
            echo "See commit history for changes." > /tmp/release_notes.txt
          fi

      - name: Create GitHub Release
        uses: actions/github-script@v7
        with:
          script: |
            const fs = require('fs');
            const version = '${{ steps.get_version.outputs.version }}';
            
            let releaseNotes;
            try {
              releaseNotes = fs.readFileSync('/tmp/release_notes.txt', 'utf8').trim();
              if (!releaseNotes) {
                releaseNotes = `Release ${version}`;
              }
            } catch (e) {
              releaseNotes = `Release ${version}`;
            }
            
            // Add installation instructions
            releaseNotes += `\n\n---\n\n### 📦 Installation\n\n`;
            releaseNotes += `**Maven**\n\`\`\`xml\n<dependency>\n    <groupId>io.github.beehive-lab</groupId>\n    <artifactId>gpu-llama3</artifactId>\n    <version>${version}</version>\n</dependency>\n\`\`\`\n\n`;
            releaseNotes += `**Gradle**\n\`\`\`groovy\nimplementation 'io.github.beehive-lab:gpu-llama3:${version}'\n\`\`\`\n\n`;
            releaseNotes += `---\n\n📖 [Documentation](https://github.com/beehive-lab/GPULlama3.java#readme) | 🔗 [Maven Central](https://central.sonatype.com/artifact/io.github.beehive-lab/gpu-llama3/${version})`;
            
            const { data: release } = await github.rest.repos.createRelease({
              owner: context.repo.owner,
              repo: context.repo.repo,
              tag_name: `v${version}`,
              name: `GPULlama3.java ${version}`,
              body: releaseNotes,
              draft: false,
              prerelease: false
            });
            
            console.log(`✅ Created release: ${release.html_url}`);

      - name: Summary
        run: |
          VERSION="${{ steps.get_version.outputs.version }}"
          echo "## 🎉 Release v${VERSION} Finalized" >> $GITHUB_STEP_SUMMARY
          echo "" >> $GITHUB_STEP_SUMMARY
          echo "| Step | Status |" >> $GITHUB_STEP_SUMMARY
          echo "|------|--------|" >> $GITHUB_STEP_SUMMARY
          echo "| Tag created | ✅ v${VERSION} |" >> $GITHUB_STEP_SUMMARY
          echo "| GitHub Release | ✅ Created |" >> $GITHUB_STEP_SUMMARY
          echo "" >> $GITHUB_STEP_SUMMARY
          echo "### 🔄 Next:" >> $GITHUB_STEP_SUMMARY
          echo "**Deploy to Maven Central** workflow will trigger automatically" >> $GITHUB_STEP_SUMMARY

  cleanup-branch:
    needs: create-release-tag
    runs-on: [self-hosted, Linux, x64]
    permissions:
      contents: write
    if: github.event_name == 'pull_request'
    
    steps:
      - name: Delete release branch
        uses: actions/github-script@v7
        with:
          script: |
            const branch = '${{ github.event.pull_request.head.ref }}';
            try {
              await github.rest.git.deleteRef({
                owner: context.repo.owner,
                repo: context.repo.repo,
                ref: `heads/${branch}`
              });
              console.log(`✅ Deleted branch: ${branch}`);
            } catch (e) {
              console.log(`Could not delete branch: ${e.message}`);
            }