# Azure DevOps CI/CD Pipeline for Test Execution
# Generated by BMad TEA Agent - Test Architect Module
# Optimized for: Parallel Sharding, Burn-In Loop
# Stack: {test_stack_type} | Framework: {test_framework}
#
# Variables to customize per project:
#   INSTALL_CMD       - dependency install command (e.g., npm ci, pnpm install --frozen-lockfile)
#   TEST_CMD          - main test command (e.g., npm run test:e2e, npm test, npx vitest)
#   LINT_CMD          - lint command (e.g., npm run lint)
#   BROWSER_INSTALL   - browser install command (frontend/fullstack only; omit for backend)
#   DEFAULT_NODE_VERSION - Node.js version (read from .nvmrc or default to 24)

trigger:
  branches:
    include:
      - main
      - develop

pr:
  branches:
    include:
      - main
      - develop

variables:
  DEFAULT_NODE_VERSION: "24"
  npm_config_cache: $(Pipeline.Workspace)/.npm
  # Set TEST_STACK_TYPE to 'backend' to skip Playwright browser installs
  TEST_STACK_TYPE: "" # Values: frontend, backend, fullstack (leave empty for auto)

stages:
  # Lint stage - Code quality checks
  - stage: Lint
    displayName: "Lint"
    jobs:
      - job: LintJob
        displayName: "Code Quality"
        pool:
          vmImage: "ubuntu-latest"
        timeoutInMinutes: 5
        steps:
          - task: NodeTool@0
            inputs:
              versionSpec: $(DEFAULT_NODE_VERSION)
            displayName: "Setup Node.js"

          - task: Cache@2
            inputs:
              key: 'npm | "$(Agent.OS)" | package-lock.json'
              restoreKeys: 'npm | "$(Agent.OS)"'
              path: $(npm_config_cache)
            displayName: "Cache npm"

          - script: npm ci
            displayName: "Install dependencies" # Replace with INSTALL_CMD

          - script: npm run lint
            displayName: "Run linter" # Replace with LINT_CMD

  # Test stage - Parallel execution with sharding
  - stage: Test
    displayName: "Test"
    dependsOn: Lint
    jobs:
      - job: TestShard
        displayName: "Test Shard"
        pool:
          vmImage: "ubuntu-latest"
        timeoutInMinutes: 30
        strategy:
          matrix:
            Shard1:
              SHARD_INDEX: 1
            Shard2:
              SHARD_INDEX: 2
            Shard3:
              SHARD_INDEX: 3
            Shard4:
              SHARD_INDEX: 4
        steps:
          - task: NodeTool@0
            inputs:
              versionSpec: $(DEFAULT_NODE_VERSION)
            displayName: "Setup Node.js"

          - task: Cache@2
            inputs:
              key: 'npm | "$(Agent.OS)" | package-lock.json'
              restoreKeys: 'npm | "$(Agent.OS)"'
              path: $(npm_config_cache)
            displayName: "Cache npm"

          - script: npm ci
            displayName: "Install dependencies" # Replace with INSTALL_CMD

          # Frontend/Fullstack only — skipped for backend-only stacks
          - script: npx playwright install --with-deps chromium
            condition: ne(variables['TEST_STACK_TYPE'], 'backend')
            displayName: "Install Playwright browsers" # Replace with BROWSER_INSTALL

          - script: npm run test:e2e -- --shard=$(SHARD_INDEX)/4
            displayName: "Run tests (shard $(SHARD_INDEX)/4)" # Replace with TEST_CMD + shard args

          - task: PublishTestResults@2
            condition: always()
            inputs:
              testResultsFormat: "JUnit"
              testResultsFiles: "test-results/**/*.xml"
              mergeTestResults: true
            displayName: "Publish test results"

          - publish: test-results/
            artifact: test-results-$(SHARD_INDEX)
            condition: failed()
            displayName: "Upload failure artifacts"

  # Burn-in stage - Flaky test detection
  # Note: Burn-in targets UI flakiness. For backend-only stacks, remove this stage entirely.
  - stage: BurnIn
    displayName: "Burn-In (Flaky Detection)"
    dependsOn: Test
    condition: and(succeeded(), or(eq(variables['Build.Reason'], 'PullRequest'), eq(variables['Build.CronSchedule.DisplayName'], 'Weekly burn-in')))
    jobs:
      - job: BurnInJob
        displayName: "Burn-In Loop"
        pool:
          vmImage: "ubuntu-latest"
        timeoutInMinutes: 60
        steps:
          - task: NodeTool@0
            inputs:
              versionSpec: $(DEFAULT_NODE_VERSION)
            displayName: "Setup Node.js"

          - script: npm ci
            displayName: "Install dependencies" # Replace with INSTALL_CMD

          # Frontend/Fullstack only — skipped for backend-only stacks
          - script: npx playwright install --with-deps chromium
            condition: ne(variables['TEST_STACK_TYPE'], 'backend')
            displayName: "Install Playwright browsers" # Replace with BROWSER_INSTALL

          - script: |
              echo "Starting burn-in loop - detecting flaky tests"
              for i in $(seq 1 10); do
                echo "Burn-in iteration $i/10"
                npm run test:e2e || exit 1
              done
              echo "Burn-in complete - no flaky tests detected"
            displayName: "Run burn-in loop (10 iterations)" # Replace npm run test:e2e with TEST_CMD

          - publish: test-results/
            artifact: burn-in-failures
            condition: failed()
            displayName: "Upload burn-in failure artifacts"