create-draft-release.yml

name: Create Draft Release with Auto-Generated Notes

on:
  workflow_dispatch:
    inputs:
      version_type:
        description: "Select the version type to increment (major, minor, patch)"
        required: true
        type: choice
        options:
          - patch
          - minor
          - major
      release_title:
        description: "Enter the title of the release"
        required: true
        type: string
      acknowledge_draft:
        description: "I understand that I must re-edit and finalize the draft release (Y/N)"
        required: true
        type: choice
        options:
          - "No"
          - "Yes"

jobs:
  validate-input:
    runs-on: ubuntu-latest
    steps:
      - name: Validate Acknowledgement
        if: ${{ github.event.inputs.acknowledge_draft != 'Yes' }}
        run: |
          echo "You must select 'Yes' to acknowledge your responsibility for finalizing the draft release."
          exit 1
      - name: Validate title (no empty)
        if: ${{ github.event.inputs.release_title == '' }}
        run: |
          echo "You must enter a title for the release."
          exit 1

  create-draft-release:
    runs-on: ubuntu-latest
    needs: validate-input

    steps:
      - uses: actions/checkout@v4
      - name: Fetch Latest Release
        id: get-latest-release
        uses: actions/github-script@v7
        with:
          script: |
            const latestRelease = await github.rest.repos.getLatestRelease({
              owner: context.repo.owner,
              repo: context.repo.repo,
            }).catch(() => null);

            if (latestRelease) {
              core.setOutput('latest_tag', latestRelease.data.tag_name);
            } else {
              core.setOutput('latest_tag', 'v0.0.0'); // Default for first release
            }

      - name: Calculate New Version
        id: calculate-version
        uses: actions/github-script@v7
        with:
          script: |
            const latestTag = '${{ steps.get-latest-release.outputs.latest_tag }}';
            const versionType = '${{ github.event.inputs.version_type }}';

            const [major, minor, patch] = latestTag.replace('v', '').split('.').map(Number);

            let newVersion;
            if (versionType === 'major') {
              newVersion = `v${major + 1}.0.0`;
            } else if (versionType === 'minor') {
              newVersion = `v${major}.${minor + 1}.0`;
            } else {
              newVersion = `v${major}.${minor}.${patch + 1}`;
            }

            core.setOutput('new_version', newVersion);

      - name: Generate Release Notes
        id: generate-release-notes
        uses: actions/github-script@v7
        with:
          script: |
            const { data: releaseNotes } = await github.rest.repos.generateReleaseNotes({
              owner: context.repo.owner,
              repo: context.repo.repo,
              tag_name: "${{ steps.calculate-version.outputs.new_version }}"
            });

            const actor = context.actor;
            const noteToAdd = `**@${actor} 👈 TODO: Write detailed release note for this version before release**\n`;

            const footer = `---\nThis release is prepared by @${actor}`;

            const modifiedBody = releaseNotes.body.replace(
              '## What\'s Changed',
              `## What's Changed\n\n${noteToAdd}`
            )
            .concat(`\n\n${footer}`);

            console.log(`releaseNotes (modified): ${JSON.stringify(modifiedBody, null, 2)}`);
            core.setOutput("release_body", modifiedBody);

      - name: Create Draft Release
        run: |
          gh release create "${{ steps.calculate-version.outputs.new_version }}" \
            --title "${{ steps.calculate-version.outputs.new_version }} ${{ github.event.inputs.release_title }}" \
            --notes "${{ steps.generate-release-notes.outputs.release_body }}" \
            --draft \
            --repo "${{ github.repository }}"
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}