name: "Backend Tests"
run-name: "Backend Tests on ${{ github.ref_name }} by @${{ github.actor }}"

on:
  pull_request:
    paths:
      - "apps/opik-backend/**"
      - ".github/workflows/backend_tests.yml"
      - ".github/scripts/discover-backend-tests.sh"
  push:
    branches:
      - 'main'
    paths:
      - "apps/opik-backend/**"
      - ".github/workflows/backend_tests.yml"
      - ".github/scripts/discover-backend-tests.sh"

  workflow_dispatch:


concurrency:
  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
permissions:
  contents: read
  checks: write
  pull-requests: write

jobs:
    # Automatically classify tests as unit/integration and split integration
    # tests into balanced groups. No manual maintenance when adding new tests.
    discover-tests:
        runs-on: ubuntu-latest
        timeout-minutes: 2
        outputs:
          matrix: ${{ steps.split.outputs.matrix }}
        steps:
            - name: Checkout
              uses: actions/checkout@v6
              with:
                fetch-depth: 1
                sparse-checkout: |
                  apps/opik-backend/src/test/java
                  .github/scripts

            - name: Classify and split tests
              id: split
              working-directory: apps/opik-backend
              run: ../../.github/scripts/discover-backend-tests.sh

    run-backend-tests:
        needs: discover-tests
        name: ${{ matrix.name }}
        runs-on: ubuntu-latest
        timeout-minutes: ${{ matrix.timeout }}
        defaults:
          run:
            working-directory: apps/opik-backend/
        strategy:
          fail-fast: false
          matrix: ${{ fromJSON(needs.discover-tests.outputs.matrix) }}
        steps:
            - name: Checkout
              uses: actions/checkout@v6
              with:
                fetch-depth: 1

            - name: Set up JDK 25
              uses: actions/setup-java@v4
              with:
                java-version: '25'
                distribution: 'corretto'
                cache: maven

            - name: Run ${{ matrix.name }}
              env:
                TESTCONTAINERS_REUSE_ENABLE: true
              run: >-
                mvn clean test
                -Dtest="${{ matrix.tests }}"
                -Dmaven.test.failure.ignore=true
                -Dsurefire.rerunFailingTestsCount=3

            - name: Publish Test Report
              uses: EnricoMi/publish-unit-test-result-action/linux@v2
              if: always()
              with:
                action_fail: true
                comment_mode: failures
                check_name: "Backend Tests - ${{ matrix.name }}"
                files: '**/target/surefire-reports/TEST-*.xml'