name: Test

on:
  pull_request:

concurrency:
  group: test-${{ github.workflow }}-${{ github.event_name }}-${{ github.event.pull_request.number || github.run_id }}
  cancel-in-progress: true

permissions: {}

jobs:
  prepare:
    runs-on: ubuntu-slim
    outputs:
      merge-group: ${{ steps.files.outputs.merge-group }}
      mergedSha: ${{ steps.prepare.outputs.mergedSha }}
      pr: ${{ steps.files.outputs.pr }}
      push: ${{ steps.files.outputs.push }}
      targetSha: ${{ steps.prepare.outputs.targetSha }}
    steps:
      - uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
        with:
          persist-credentials: false
          sparse-checkout-cone-mode: true # default, for clarity
          sparse-checkout: |
            ci/github-script
      - id: prepare
        uses: actions/github-script@3a2844b7e9c422d3c10d287c895573f7108da1b3 # v9.0.0
        with:
          retries: 10
          # The default for this includes code 422, which happens regularly for us when comparing commits:
          #   422 - Server Error: Sorry, this diff is taking too long to generate.
          # Listing all other values from here to effectively remove 422:
          #   https://github.com/octokit/plugin-retry.js/blob/9a2443746c350b3beedec35cf26e197ea318a261/src/index.ts#L14
          retry-exempt-status-codes: 400,401,403,404
          script: |
            require('./ci/github-script/prepare.js')({
              github,
              context,
              core,
              // Review comments will be posted by the main PR workflow on the pull_request_target event.
              dry: true,
            })

      - name: Determine changed files
        id: files
        uses: actions/github-script@3a2844b7e9c422d3c10d287c895573f7108da1b3 # v9.0.0
        with:
          script: |
            const files = (await github.paginate(github.rest.pulls.listFiles, {
              ...context.repo,
              pull_number: context.payload.pull_request.number,
              per_page: 100,
            })).map(file => file.filename)

            if (files.some(file => [
              '.github/workflows/build.yml',
              '.github/workflows/check.yml',
              '.github/workflows/eval.yml',
              '.github/workflows/lint.yml',
              '.github/workflows/merge-group.yml',
              '.github/workflows/test.yml',
              'ci/github-script/supportedSystems.js',
              'ci/pinned.json',
              'ci/supportedBranches.js',
            ].includes(file))) core.setOutput('merge-group', true)

            if (files.some(file => [
              '.github/actions/checkout/action.yml',
              '.github/workflows/bot.yml',
              '.github/workflows/build.yml',
              '.github/workflows/check.yml',
              '.github/workflows/eval.yml',
              '.github/workflows/lint.yml',
              '.github/workflows/pull-request-target.yml',
              '.github/workflows/test.yml',
              'ci/github-script/bot.js',
              'ci/github-script/check-target-branch.js',
              'ci/github-script/commits.js',
              'ci/github-script/get-pr-commit-details.js',
              'ci/github-script/lint-commits.js',
              'ci/github-script/merge.js',
              'ci/github-script/prepare.js',
              'ci/github-script/reviewers.js',
              'ci/github-script/reviews.js',
              'ci/github-script/supportedSystems.js',
              'ci/github-script/withRateLimit.js',
              'ci/pinned.json',
              'ci/supportedBranches.js',
            ].includes(file))) core.setOutput('pr', true)

  merge-group:
    if: needs.prepare.outputs.merge-group
    name: Merge Group
    needs: [prepare]
    uses: ./.github/workflows/merge-group.yml
    # Those are actually only used on the merge_group event, but will throw an error if not set.
    permissions:
      pull-requests: write # unused on pull_request, required by merge-group workflow
      statuses: write # unused on pull_request, required by merge-group workflow
    with:
      artifact-prefix: mg-
      mergedSha: ${{ needs.prepare.outputs.mergedSha }}
      targetSha: ${{ needs.prepare.outputs.targetSha }}

  pr:
    if: needs.prepare.outputs.pr
    name: PR
    needs: [prepare]
    uses: ./.github/workflows/pull-request-target.yml
    # Those are actually only used on the pull_request_target event, but will throw an error if not set.
    permissions:
      issues: write # unused on pull_request, required by bot workflow
      pull-requests: write # unused on pull_request, required by PR workflow
      statuses: write # unused on pull_request, required by PR workflow
    secrets:
      NIXPKGS_CI_APP_PRIVATE_KEY: ${{ secrets.NIXPKGS_CI_APP_PRIVATE_KEY }}
      NIXPKGS_BRANCH_CHECK_APP_PRIVATE_KEY: ${{ secrets.NIXPKGS_BRANCH_CHECK_APP_PRIVATE_KEY }}
      NIXPKGS_COMMIT_CHECK_APP_PRIVATE_KEY: ${{ secrets.NIXPKGS_COMMIT_CHECK_APP_PRIVATE_KEY }}
      NIXPKGS_MANUAL_EDIT_CHECK_APP_PRIVATE_KEY: ${{ secrets.NIXPKGS_MANUAL_EDIT_CHECK_APP_PRIVATE_KEY }}
    with:
      artifact-prefix: pr-