changie-gen.yml

name: Changie Gen

on:
  workflow_run:
    workflows: [Dependabot Labels]
    types:
      - completed

jobs:
  generate-changelog:
    env:
      MAIN_BRANCH: ${{ github.event.workflow_run.pull_requests[0].base.ref }}
      PR_BRANCH: ${{ github.event.workflow_run.pull_requests[0].head.ref }}
    runs-on: ubuntu-latest
    # NOTE: "github.event.workflow_run.conclusion" check needed within "steps"
    steps:
    - name: Checkout branch that Dependabot labeled
      if: github.event.workflow_run.conclusion == 'success'
      uses: actions/checkout@v4
      with:
        ref: ${{ env.PR_BRANCH }}
        token: ${{ secrets.ORG_GITHUB_TOKEN }}

    - name: Check if changelog file exists already
      if: github.event.workflow_run.conclusion == 'success'
      shell: bash
      id: changelog_check
      run: |
        git fetch origin ${{ env.MAIN_BRANCH }}
        if [[ -n $(git diff --name-only main -- .changes/unreleased/*.yaml) ]]; then
          echo "exists=true" >> $GITHUB_OUTPUT
          echo "Changelog already exists for this PR, skip creating a new one"
        else
          echo "exists=false" >> $GITHUB_OUTPUT
          echo "No changelog exists for this PR, creating a new one"
        fi

    - name: Create changie log
      if: >-
        github.event.workflow_run.conclusion == 'success' &&
        steps.changelog_check.outputs.exists == 'false'
      uses: miniscruff/changie-action@v2
      with:
        version: latest
        args: new --kind Dependency --body "${{ github.event.workflow_run.display_title }}"

    - name: Commit & Push changes
      if: >-
        github.event.workflow_run.conclusion == 'success' &&
        steps.changelog_check.outputs.exists == 'false'
      shell: bash
      run: |
        git config user.name "OpsLevel Bots"
        git config user.email "bots@opslevel.com"
        git pull
        git add .
        git commit -m "Add automated changelog yaml from template"
        git push