name: CI

on:
  push:
    branches:
      - master
  pull_request:

env:
  HOMEBREW_DEVELOPER: 1
  HOMEBREW_GITHUB_ACTIONS: 1
  HOMEBREW_NO_AUTO_UPDATE: 1

concurrency:
  group: "tests-${{ github.ref }}"
  cancel-in-progress: ${{ github.event_name == 'pull_request' }}

permissions:
  contents: read

jobs:
  tap_syntax:
    if: github.repository == 'Homebrew/homebrew-core'
    runs-on: ubuntu-22.04
    container:
      image: ghcr.io/homebrew/ubuntu22.04:master
    env:
      HOMEBREW_SIMULATE_MACOS_ON_LINUX: 1
    outputs:
      testing_formulae: ${{ steps.formulae-detect.outputs.testing_formulae }}
      added_formulae: ${{ steps.formulae-detect.outputs.added_formulae }}
      deleted_formulae: ${{ steps.formulae-detect.outputs.deleted_formulae }}
    steps:
      - name: Set up Homebrew
        id: set-up-homebrew
        uses: Homebrew/actions/setup-homebrew@master

      - run: brew test-bot --only-tap-syntax

      - run: brew test-bot --only-formulae-detect
        if: github.event_name == 'pull_request'
        id: formulae-detect

  setup_tests:
    permissions:
      pull-requests: read
    if: github.event_name == 'pull_request' && github.repository == 'Homebrew/homebrew-core'
    runs-on: ubuntu-22.04
    needs: tap_syntax
    outputs:
      syntax-only: ${{ steps.check-labels.outputs.syntax-only }}
      linux-runner: ${{ steps.check-labels.outputs.linux-runner }}
      logs-dir: ${{ steps.check-labels.outputs.logs-dir }}
      fail-fast: ${{ steps.check-labels.outputs.fail-fast }}
      test-dependents: ${{ steps.check-labels.outputs.test-dependents }}
      timeout-minutes: ${{ steps.check-labels.outputs.timeout-minutes }}
      test-bot-formulae-args: ${{ steps.check-labels.outputs.test-bot-formulae-args }}
      test-bot-dependents-args: ${{ steps.check-labels.outputs.test-bot-dependents-args }}
    steps:
      - name: Check for CI labels
        id: check-labels
        uses: actions/github-script@v6
        env:
          TESTING_FORMULAE: ${{needs.tap_syntax.outputs.testing_formulae}}
          ADDED_FORMULAE: ${{needs.tap_syntax.outputs.added_formulae}}
          DELETED_FORMULAE: ${{needs.tap_syntax.outputs.deleted_formulae}}
        with:
          github-token: ${{ secrets.GITHUB_TOKEN }}
          script: |
            const { data: { labels: labels } } = await github.rest.pulls.get({
              owner: context.repo.owner,
              repo: context.repo.repo,
              pull_number: context.issue.number
            })
            const label_names = labels.map(label => label.name)

            if (label_names.includes('CI-syntax-only')) {
              console.log('CI-syntax-only label found. Skipping tests job.')
              core.setOutput('syntax-only', 'true')
            } else {
              console.log('No CI-syntax-only label found. Running tests job.')
              core.setOutput('syntax-only', 'false')
            }

            if (label_names.includes('CI-linux-self-hosted')) {
              core.setOutput('linux-runner', 'linux-self-hosted-1')
            } else {
              core.setOutput('linux-runner', 'ubuntu-22.04')
              core.setOutput('logs-dir', '/github/home/.cache/Homebrew/Logs')
            }

            if (label_names.includes('CI-no-fail-fast')) {
              console.log('CI-no-fail-fast label found. Continuing tests despite failing matrix builds.')
              core.setOutput('fail-fast', 'false')
            } else {
              console.log('No CI-no-fail-fast label found. Stopping tests on first failing matrix build.')
              core.setOutput('fail-fast', 'true')
            }

            if (label_names.includes('CI-skip-dependents')) {
              console.log('CI-skip-dependents label found. Skipping brew test-bot --only-formulae-dependents.')
              core.setOutput('test-dependents', 'false')
            } else {
              console.log('No CI-skip-dependents label found. Running brew test-bot --only-formulae-dependents.')
              core.setOutput('test-dependents', 'true')
            }

            const maximum_long_pr_count = 2
            if (label_names.includes('CI-long-timeout')) {
              const labelCountQuery = `query($owner:String!, $name:String!, $label:String!) {
                repository(owner:$owner, name:$name) {
                  pullRequests(last: 100, states: OPEN, labels: [$label]) {
                    totalCount
                  }
                }
              }`;
              var long_pr_count;
              try {
                const response = await github.graphql(
                  labelCountQuery, {
                    owner: context.repo.owner,
                    name: context.repo.repo,
                    label: 'CI-long-timeout'
                  }
                )
                long_pr_count = response.repository.pullRequests.totalCount
              } catch (error) {
                // The GitHub API query errored, so fail open and assume 0 long PRs.
                long_pr_count = 0
                core.warning('CI-long-timeout label count query failed. Assuming no long PRs.')
              }
              if (long_pr_count > maximum_long_pr_count) {
                core.setFailed(`Too many pull requests (${long_pr_count}) with the long-timeout label!`)
                core.error(`Only ${maximum_long_pr_count} pull requests at a time can use this label.`)
                core.error('Remove the long-timeout label from this or other PRs (once their CI has completed).')
              }
              console.log('CI-long-timeout label found. Setting long GitHub Actions timeout.')
              core.setOutput('timeout-minutes', '4320')
            } else {
              console.log('No CI-long-timeout label found. Setting short GitHub Actions timeout.')
              core.setOutput('timeout-minutes', '90')

              if (label_names.includes('long build')) {
                core.setFailed('PR requires the CI-long-timeout label but it is not set!')
                core.error('If the longer timeout is not required, remove the "long build" label.')
                core.error('Otherwise, add the "CI-long-timeout" label.')
                core.error(`No more than ${maximum_long_pr_count} PRs at a time may use "CI-long-timeout".`)
              }
            }

            const test_bot_formulae_args = ["--only-formulae", "--junit", "--only-json-tab", "--skip-dependents"]
            test_bot_formulae_args.push(`--testing-formulae="${process.env.TESTING_FORMULAE}"`)
            test_bot_formulae_args.push(`--added-formulae="${process.env.ADDED_FORMULAE}"`)
            test_bot_formulae_args.push(`--deleted-formulae="${process.env.DELETED_FORMULAE}"`)

            const test_bot_dependents_args = ["--only-formulae-dependents", "--junit"]
            test_bot_dependents_args.push(`--testing-formulae="${process.env.TESTING_FORMULAE}"`)

            if (label_names.includes('CI-test-bot-fail-fast')) {
              console.log('CI-test-bot-fail-fast label found. Passing --fail-fast to brew test-bot.')
              test_bot_formulae_args.push('--fail-fast')
              test_bot_dependents_args.push('--fail-fast')
            } else {
              console.log('No CI-test-bot-fail-fast label found. Not passing --fail-fast to brew test-bot.')
            }

            if (label_names.includes('CI-build-dependents-from-source')) {
              console.log('CI-build-dependents-from-source label found. Passing --build-dependents-from-source to brew test-bot.')
              test_bot_dependents_args.push('--build-dependents-from-source')
            } else {
              console.log('No CI-build-dependents-from-source label found. Not passing --build-dependents-from-source to brew test-bot.')
            }

            if (label_names.includes('CI-skip-recursive-dependents')) {
              console.log('CI-skip-recursive-dependents label found. Passing --skip-recursive-dependents to brew test-bot.')
              test_bot_dependents_args.push('--skip-recursive-dependents')
            } else {
              console.log('No CI-skip-recursive-dependents label found. Not passing --skip-recursive-dependents to brew test-bot.')
            }

            if (label_names.includes('CI-skip-livecheck')) {
              console.log('CI-skip-livecheck label found. Passing --skip-livecheck to brew test-bot.')
              test_bot_formulae_args.push('--skip-livecheck')
            } else {
              console.log('No CI-skip-livecheck label found. Not passing --skip-livecheck to brew test-bot.')
            }

            core.setOutput('test-bot-formulae-args', test_bot_formulae_args.join(" "))
            core.setOutput('test-bot-dependents-args', test_bot_dependents_args.join(" "))

  tests:
    needs: setup_tests
    if: ${{github.event_name == 'pull_request' && fromJson(needs.setup_tests.outputs.syntax-only) == false}}
    strategy:
      matrix:
        include:
          - runner: "13-arm64-${{github.run_id}}-${{github.run_attempt}}"
          - runner: "13-${{github.run_id}}-${{github.run_attempt}}"
          - runner: "12-arm64"
          - runner: "12-${{github.run_id}}-${{github.run_attempt}}"
          - runner: "11-arm64"
          - runner: "11-${{github.run_id}}-${{github.run_attempt}}"
          - runner: ${{needs.setup_tests.outputs.linux-runner}}
            container:
              image: ghcr.io/homebrew/ubuntu22.04:master
              options: --user=linuxbrew -e GITHUB_ACTIONS_HOMEBREW_SELF_HOSTED
            workdir: /github/home
            timeout: 4320
      fail-fast: ${{fromJson(needs.setup_tests.outputs.fail-fast)}}
    runs-on: ${{matrix.runner}}
    container: ${{matrix.container}}
    timeout-minutes: ${{ matrix.timeout || fromJson(needs.setup_tests.outputs.timeout-minutes) }}
    defaults:
      run:
        shell: /bin/bash -e {0}
        working-directory: ${{matrix.workdir || github.workspace}}
    env:
      GITHUB_TOKEN: ${{secrets.GITHUB_TOKEN}}
      HOMEBREW_GITHUB_API_TOKEN: ${{secrets.GITHUB_TOKEN}}
    steps:
      - name: Set environment variables
        if: runner.os == 'macOS'
        run: |
          echo 'PATH=/opt/homebrew/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin' >> $GITHUB_ENV

      - name: Set up Homebrew
        id: set-up-homebrew
        uses: Homebrew/actions/setup-homebrew@master

      - run: brew test-bot --only-cleanup-before

      - run: brew test-bot --only-setup

      - name: Run brew test-bot ${{ needs.setup_tests.outputs.test-bot-formulae-args }}
        id: brew-test-bot-formulae
        run: |
          mkdir bottles
          cd bottles
          brew test-bot ${{ needs.setup_tests.outputs.test-bot-formulae-args }}

      - name: Failures summary for brew test-bot --only-formulae
        if: always()
        uses: Homebrew/actions/failures-summary-and-bottle-result@master
        with:
          workdir: ${{matrix.workdir || github.workspace}}
          result_path: bottles/steps_output.txt
          step_name: 'Build summary on ${{ matrix.runner }}'

      - name: Output brew linkage result
        if: always()
        uses: Homebrew/actions/failures-summary-and-bottle-result@master
        with:
          workdir: ${{matrix.workdir || github.workspace}}
          result_path: bottles/linkage_output.txt
          step_name: '`brew linkage` output on ${{ matrix.runner }}'
          collapse: 'true'

      - name: Output brew bottle result
        if: always()
        uses: Homebrew/actions/failures-summary-and-bottle-result@master
        with:
          workdir: ${{matrix.workdir || github.workspace}}
          result_path: bottles/bottle_output.txt
          step_name: '`brew bottle` output on ${{ matrix.runner }}'
          collapse: 'true'

      - name: Run brew test-bot ${{ needs.setup_tests.outputs.test-bot-dependents-args }} --skipped-or-failed-formulae=${{ steps.brew-test-bot-formulae.outputs.skipped_or_failed_formulae }}
        if: ${{(success() || failure()) && fromJson(needs.setup_tests.outputs.test-dependents)}}
        run: |
          cd bottles
          brew test-bot ${{ needs.setup_tests.outputs.test-bot-dependents-args }} --skipped-or-failed-formulae=${{ steps.brew-test-bot-formulae.outputs.skipped_or_failed_formulae }}

      - name: Failures summary for brew test-bot ${{ needs.setup_tests.outputs.test-bot-dependents-args }} --skipped-or-failed-formulae=${{ steps.brew-test-bot-formulae.outputs.skipped_or_failed_formulae }}
        if: ${{always() && fromJson(needs.setup_tests.outputs.test-dependents) == true}}
        uses: Homebrew/actions/failures-summary-and-bottle-result@master
        with:
          workdir: ${{matrix.workdir || github.workspace}}
          result_path: bottles/steps_output.txt
          step_name: 'Dependent summary on ${{ matrix.runner }}'
          collapse: 'true'

      - name: Upload logs
        if: always()
        uses: actions/upload-artifact@main
        with:
          name: logs-${{ matrix.runner }}
          path: ${{ runner.os == 'Linux' && needs.setup_tests.outputs.logs-dir || format('{0}/bottles/logs', matrix.workdir || github.workspace) }}

      - name: Delete logs and home
        if: always()
        run: |
          rm -rvf bottles/logs
          rm -rvf bottles/home

      - name: Count bottles
        id: bottles
        if: always()
        run: |
          cd bottles
          count=$(ls *.json | wc -l | xargs echo -n)
          echo "$count bottles"
          echo "::set-output name=count::$count"
          failures=$(ls failed/*.json | wc -l | xargs echo -n)
          echo "$failures failed bottles"
          echo "::set-output name=failures::$failures"

      - name: Upload failed bottles
        if: always() && steps.bottles.outputs.failures > 0
        uses: actions/upload-artifact@main
        with:
          name: bottles-${{ matrix.runner }}
          path: ${{matrix.workdir || github.workspace}}/bottles/failed

      # Must be run before the `Upload bottles` step so that failed
      # bottles are not included in the `bottles` artifact.
      - name: Delete failed bottles
        if: always()
        run: rm -rvf bottles/failed

      - name: Upload bottles
        if: always() && steps.bottles.outputs.count > 0
        uses: actions/upload-artifact@main
        with:
          name: bottles
          path: ${{matrix.workdir || github.workspace}}/bottles

      - name: Post cleanup
        if: always()
        run: |
          brew test-bot --only-cleanup-after
          rm -rvf bottles