name: CI

on:
  push:
    branches: [main]
  pull_request:

permissions:
  contents: write
  pull-requests: write

concurrency:
  group: ci-${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true

jobs:
  check:
    name: Validate scripts and pinned versions
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - name: Shell syntax check
        run: bash -n build.sh check-versions.sh update-version.sh versions.sh
      - name: Validate pinned versions
        run: ./check-versions.sh

  build:
    name: Build Flatpak
    runs-on: ubuntu-latest
    container:
      image: ghcr.io/flathub-infra/flatpak-github-actions:freedesktop-24.08
      options: --privileged
    steps:
      - uses: actions/checkout@v4
      - name: Install Electron base app
        run: |
          flatpak remote-add --if-not-exists flathub https://flathub.org/repo/flathub.flatpakrepo
          flatpak install -y flathub org.electronjs.Electron2.BaseApp//24.08
      - uses: flatpak/flatpak-github-actions/flatpak-builder@v6
        with:
          bundle: patchwork.flatpak
          manifest-path: nz.scuttlebutt.Patchwork.yaml
          verbose: true

  merge:
    name: Auto-merge update PR
    runs-on: ubuntu-latest
    needs: [check, build]
    if: |
      github.event_name == 'pull_request' &&
      github.event.pull_request.state == 'open' &&
      github.event.pull_request.user.login == 'github-actions[bot]' &&
      contains(github.event.pull_request.labels.*.name, 'automerge') &&
      (github.event.pull_request.mergeable_state == 'clean' ||
       github.event.pull_request.mergeable_state == 'behind')
    env:
      GH_TOKEN: ${{ github.token }}
    steps:
      - name: Update branch if behind
        if: github.event.pull_request.mergeable_state == 'behind'
        run: gh pr update-branch "${{ github.event.pull_request.number }}"
      - name: Merge
        run: gh pr merge --squash --delete-branch "${{ github.event.pull_request.number }}"