ci:precommit.yml

name: ci:precommit

on:
  push:
    branches:
      - main
  pull_request:
  merge_group:

concurrency:
  group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}
  cancel-in-progress: true

jobs:

  test:
    name: Continuous integration (test precommit)
    runs-on: ubuntu-latest
    timeout-minutes: 10
    steps:
      - name: Checkout 🛎️
        uses: actions/checkout@v4
        with:
          # TODO Fetch sparingly with something similar to
          # https://github.com/rmacklin/fetch-through-merge-base/blob/main/action.yml
          # Maybe could use commit count (does not exist on merge_group
          # somehow)
          # Maybe setting .git/shallow to base first would work in all cases?
          # See https://stackoverflow.com/a/76573878
          fetch-depth: 0

      - name: Compute MERGE_BASE and HEAD_SHA 📜
        id: event
        uses: ./.github/actions/github/event

      - name: Stage MERGE_BASE...HEAD_SHA ⏮️
        env:
          HEAD_SHA: ${{ steps.event.outputs.head-sha }}
          MERGE_BASE: ${{ steps.event.outputs.merge-base }}
        run: |
          git reset --hard "${HEAD_SHA}"
          git reset --soft "${MERGE_BASE}"

      # TODO Do something destructive to check that it is not picked up.
      - name: Install 💾
        uses: ./.github/actions/install

      - name: Run precommit 🔬
        run: |
          npm run precommit