auto-updates.yml

name: Auto update broker variant branches
on:
  push:
    branches:
      - main
  workflow_dispatch:
concurrency: auto-update-broker-variants

permissions:
    pull-requests: write
    contents: write

env:
    DEBIAN_FRONTEND: noninteractive

jobs:
  update-snap-branches:
    name: Update snap branches
    strategy:
      matrix:
        branch_name: ["msentraid"]
    runs-on: ubuntu-latest
    steps:
        - name: Install dependencies
          run: |
            set -eu
            sudo apt update
            sudo apt install -y git
        - uses: actions/checkout@v4
          with:
            ref: main
            fetch-depth: 0
        - name: Merge main into branches
          id: merge
          run: |
            set -eux
            git config user.name "github-actions[bot]"
            git config user.email "github-actions[bot]@users.noreply.github.com"
            git fetch
            git checkout ${{ matrix.branch_name }}

            # First, assume that we will have conflicts due to the merge command
            # failing the action if there's any.
            echo "has_conflicts=true" >> $GITHUB_OUTPUT
            has_conflicts=true
            if git merge main --commit; then
              has_conflicts=false
            fi

            echo "has_conflicts=${has_conflicts}" >> $GITHUB_OUTPUT

        - uses: actions/setup-go@v5
          if: ${{ steps.merge.outputs.has_conflicts == 'false' }}
          with:
            go-version-file: go.mod
        - name: Regenerate consts for this broker
          if: ${{ steps.merge.outputs.has_conflicts == 'false' }}
          run: |
            set -eux
            # Regenerate the consts for the broker
            go generate ./internal/consts/
        - name: Find generated changes
          if: ${{ steps.merge.outputs.has_conflicts == 'false' }}
          id: check-diff
          uses: canonical/desktop-engineering/gh-actions/common/has-diff@main
          with:
            working-directory: ./internal/consts/
            fail-on-diff: false
        - name: Commit generated changes
          if: ${{ steps.merge.outputs.has_conflicts == 'false' && steps.check-diff.outputs.diff == 'true' }}
          run: |
            set -eux
            git add ./internal/consts/
            git commit -m "Regenerate consts for ${{ matrix.branch_name }}"
        - name: Create Pull Request
          if: ${{ steps.merge.outputs.has_conflicts == 'false' }}
          uses: peter-evans/create-pull-request@v7
          with:
            commit-message: Auto update ${{ matrix.branch_name }} branch
            title: Auto update ${{ matrix.branch_name }} branch
            body: |
              Automated merge from main of ${{ matrix.branch_name }}.
            branch: update-${{ matrix.branch_name }}
            delete-branch: true
            token: ${{ secrets.GITHUB_TOKEN }}
        - name: Push branch
          if: ${{ steps.merge.outputs.has_conflicts == 'false' }}
          run: |
            set -eux
            git push origin update-${{ matrix.branch_name }}:${{ matrix.branch_name }}

        - name: Restore and prepare branch
          if: ${{ steps.merge.outputs.has_conflicts == 'true' }}
          run: |
            set -eux
            # Reset the state of the current destination
            git merge --abort
            # Apply the changes we want to merge (which is the content of main)
            git reset --hard main
        - name: Create Pull Request
          if: ${{ steps.merge.outputs.has_conflicts == 'true' }}
          uses: peter-evans/create-pull-request@v7
          with:
            commit-message: Auto update ${{ matrix.branch_name }} branch
            title: Auto update ${{ matrix.branch_name }} branch
            body: |
              Pull request created due to conflicts found when merging main into ${{ matrix.branch_name }}.

              Remember to run go generate ./internal/consts/ and committing those changes before merging this PR.
            branch: update-${{ matrix.branch_name }}
            delete-branch: true
            token: ${{ secrets.GITHUB_TOKEN }}