publish_release_draft.yml

name: Publish draft release when release branch is merged

on:
  pull_request:
    types:
      - closed
    branches:
      - main
      - support/*

jobs:
  publish_release:
    if: ${{ github.event.pull_request.merged }}
    runs-on: ubuntu-latest
    steps:

      - name: Checkout
        uses: actions/checkout@master
        with:
          fetch-depth: 0

      - name: Get repository name
        id: repo-name
        uses: tiller1010/get-repo-name-action@master
        with:
          with-owner: 'true'

      - name: Get release id
        id: get_release_id
        run: |
          TOKEN="${{ secrets.GITHUB_TOKEN }}"
          REPO="${{ steps.repo-name.outputs.repository-name }}"
          RELEASEID=$(curl -H "Accept: application/vnd.github+json" -H "Authorization: token $TOKEN" https://api.github.com/repos/$REPO/releases)
          RELEASEID=$(echo "$RELEASEID" | grep \"id\"  | head -n 1 | sed -re "s/[a-z]*//g;s/[-|,|:|'\"]//g;s/\s//g")
          echo "release_id=$RELEASEID" >> $GITHUB_OUTPUT
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

      - name: Payload info
        id: payload_info
        uses: tiller1010/payload-info-action@master
        continue-on-error: true


      # START HOTFIX RELEASE RE-DRAFT
      - name: Check if releasing a hotfix
        id: is_hotfix_branch
        continue-on-error: true
        run: |
          PRBRANCH="${{ steps.payload_info.outputs.branch }}"
          FILTEREDBRANCHNAME=$(echo "$PRBRANCH" | grep "hotfix")
          echo "filtered_pr_branch_name=$FILTEREDBRANCHNAME" >> $GITHUB_OUTPUT

      - name: Get hotfix Tag from branch name
        id: get_hotfix_tag
        if: steps.is_hotfix_branch.outputs.filtered_pr_branch_name != ''
        run: |
          HOTFIXBRANCH="${{ steps.payload_info.outputs.branch }}"
          RELEASETAG=$(echo "$HOTFIXBRANCH" | sed -re "s/(\* )?hotfix\///;s/(\w+)\/.*/\1/g")
          echo "release_tag=$RELEASETAG" >> $GITHUB_OUTPUT

      - name: Get Last Tag created on this branch
        id: last_tag
        if: steps.is_hotfix_branch.outputs.filtered_pr_branch_name != ''
        run: |
          LASTTAG=$(git describe --tags | sed -re "s/-.+//")
          echo "last_tag_on_branch=$LASTTAG" >> $GITHUB_OUTPUT

      # Re-Draft Release with hotfix tag
      # "release-drafter" works by checking the changes of merged pull requests.
      # For support or main branch hotfixes, there is only one merged hotfix PR, which is only now available,
      # so we need to re-draft the release with the recently merged PR for release notes.
      - name: Draft Release with hotfix tag
        id: update_release_draft_with_hotfix_branch
        if: steps.is_hotfix_branch.outputs.filtered_pr_branch_name != ''
        uses: tiller1010/release-drafter@master
        with:
          tag: ${{ steps.get_hotfix_tag.outputs.release_tag }}
          last_tag: ${{ steps.last_tag.outputs.last_tag_on_branch }}
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
      # END HOTFIX RELEASE RE-DRAFT


      - name: Publish release
        uses: eregon/publish-release@v1
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        with:
          release_id: ${{ steps.get_release_id.outputs.release_id }}


      # START CHANGELOG PORTION
      - name: Check if releasing for a support branch
        id: is_support_branch
        continue-on-error: true
        run: |
          FILTEREDBRANCHNAME=$(git branch | grep "\* support")
          echo "filtered_branch_name=$FILTEREDBRANCHNAME" >> $GITHUB_OUTPUT

      - name: Generate Changelog
        id: changelog
        if: steps.is_support_branch.outputs.filtered_branch_name == ''
        uses: tiller1010/tag-changelog@main
        with:
          token: ${{ secrets.GITHUB_TOKEN }}
          exclude_types: other,doc,chore
          config_file: .github/tag-changelog-config.js

      - name: Output Changelog
        id: output_changelog
        if: steps.is_support_branch.outputs.filtered_branch_name == ''
        run: TAGCONTENT="${{ steps.changelog.outputs.changelog }}";CHANGELOG=$(cat CHANGELOG.md);CHANGELOG=$(echo "$CHANGELOG" | sed -e "s/# Changelog//");echo -e "# Changelog\n\n$TAGCONTENT$CHANGELOG" > CHANGELOG.md

      - name: Create Pull Request
        id: create_pr
        if: steps.is_support_branch.outputs.filtered_branch_name == ''
        uses: peter-evans/create-pull-request@v4
        with:
          title: Auto-Update CHANGELOG.md
          commit-message: Updated CHANGELOG.md
          labels: automerge

      - name: Approve PR
        if: steps.is_support_branch.outputs.filtered_branch_name == ''
        uses: hmarr/auto-approve-action@v3
        with:
          review-message: Auto approved automated PR
          pull-request-number: ${{ steps.create_pr.outputs.pull-request-number }}
          github-token: ${{ secrets.SOME_USERS_PAT }}

      - name: Auto merge
        if: steps.is_support_branch.outputs.filtered_branch_name == ''
        uses: pascalgn/automerge-action@main
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          PULL_REQUEST: ${{ steps.create_pr.outputs.pull-request-number }}
          MERGE_DELETE_BRANCH: true

      - name: Post Changelog Checkout
        if: steps.is_support_branch.outputs.filtered_branch_name == ''
        uses: actions/checkout@master
        with:
          ref: main
      # END CHANGELOG PORTION


      # Merge support changes into develop so they can be included in the next release
      - name: Merge support -> develop
        if: steps.is_support_branch.outputs.filtered_branch_name != ''
        uses: devmasx/merge-branch@master
        with:
          type: now
          target_branch: develop
          github_token: ${{ secrets.GITHUB_TOKEN }}
          message: Merged support into develop

      # Merge main changes into develop
      - name: Merge main -> develop
        if: steps.is_support_branch.outputs.filtered_branch_name == ''
        uses: devmasx/merge-branch@master
        with:
          type: now
          from_branch: main
          target_branch: develop
          github_token: ${{ secrets.GITHUB_TOKEN }}
          message: Merged main into develop

      # Remove the release or hotfix branch after publishing
      - name: Remove PR branch
        uses: dawidd6/action-delete-branch@v3
        with:
          github_token: ${{ secrets.GITHUB_TOKEN }}
          branches: ${{ steps.payload_info.outputs.branch }}