pull-request-bot.yml

# **what?**
# - verify that pull requests have a changelog entry unless otherwise specified
# - create backport PRs
#
# **why?**
# - ensure all code changes are reflected in the final CHANGELOG.md
# - ensure consistent process when backporting changes
#
# **when?**
# - when a pull request sees any change
name: Pull request bot

on:
    pull_request:
        types: [opened, reopened, labeled, unlabeled, synchronize]

permissions:
    contents: read
    pull-requests: write

jobs:
    backport:
        name: Backport
        runs-on: ubuntu-latest
        if: >-
            github.event.pull_request.merged &&
            github.event.action == 'labeled' &&
            contains(github.event.label.name, 'backport')
        steps:
        -   uses: tibdex/backport@v2
            with:
                github_token: ${{ secrets.GITHUB_TOKEN }}

    changelog-entry-check:
        name: Changelog entry check
        uses: dbt-labs/actions/.github/workflows/changelog-existence.yml@main
        with:
            changelog_comment: |
                Thank you for your pull request!
                We could not find a changelog entry for this change.
                For details on how to document a change, see the [dbt-postgres contributing guide](https://github.com/dbt-labs/dbt-postgres/blob/main/CONTRIBUTING.md).
            skip_label: Skip Changelog
        secrets: inherit

    create-bot-changelog-entry:
        name: Create bot changelog entry
        strategy:
            matrix:
              include:
              -   label: dependencies
                  changie_kind: Dependencies
        runs-on: ubuntu-latest
        steps:
        -   name: Create and commit changelog on bot PR
            if: >-
                contains(github.event.pull_request.labels.*.name, 'dependencies') &&
                (github.event.action == 'labeled' || github.event.action == 'opened')
            id: bot_changelog
            uses: emmyoop/changie_bot@v1
            with:
                GITHUB_TOKEN: ${{ secrets.FISHTOWN_BOT_PAT }}
                commit_author_name: Github Build Bot
                commit_author_email: <buildbot@fishtownanalytics.com>
                commit_message: '[automated] add changelog entry for dependabot PR'
                changie_kind: Dependencies
                label: dependencies
                custom_changelog_string: 'custom:\n  Author: ${{ github.event.pull_request.user.login }}\n  PR: ${{ github.event.pull_request.number }}'