name: Validate Orchestrator Compatibility

# ==============================================================================
# Essential plugin health checks — runs on every PR and push.
# Fast (~5 min): compilation, unit tests, plugin interface, type declarations.
#
# For exhaustive integration tests (k8s, AWS, local-docker, rclone) see
# validate-orchestrator-integration.yml which runs on a daily cron.
# ==============================================================================

on:
  workflow_dispatch:
  push:
    branches: [main, 'release/**', 'feature/**', 'refactor/**']
    paths:
      - 'src/model/orchestrator-plugin.ts'
      - 'src/model/build-parameters.ts'
      - 'src/model/input.ts'
      - 'src/model/github.ts'
      - 'src/model/cli/cli.ts'
      - 'src/model/input-readers/**'
      - 'src/index.ts'
      - 'src/types/game-ci-orchestrator.d.ts'
      - 'action.yml'
      - 'package.json'
      - 'yarn.lock'
      - '.github/workflows/validate-orchestrator.yml'
  pull_request:
    branches: [main, 'release/**']
    paths:
      - 'src/model/orchestrator-plugin.ts'
      - 'src/model/build-parameters.ts'
      - 'src/model/input.ts'
      - 'src/model/github.ts'
      - 'src/model/cli/cli.ts'
      - 'src/model/input-readers/**'
      - 'src/index.ts'
      - 'src/types/game-ci-orchestrator.d.ts'
      - 'action.yml'
      - 'package.json'
      - 'yarn.lock'
      - '.github/workflows/validate-orchestrator.yml'

permissions:
  contents: read
  packages: read

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

jobs:
  # ============================================================================
  # PLUGIN ARCHITECTURE HEALTH CHECK
  # ============================================================================
  # Validates that:
  #   1. unity-builder compiles and its unit tests pass
  #   2. Plugin loader degrades gracefully without orchestrator
  #   3. Orchestrator compiles and its unit tests pass
  #   4. Plugin loader loads all services when orchestrator is installed
  #   5. Type declarations match actual exports
  # ============================================================================
  plugin-health:
    name: Plugin Architecture Health
    runs-on: ubuntu-latest
    steps:
      - name: Checkout unity-builder
        uses: actions/checkout@v4

      - name: Checkout orchestrator
        uses: actions/checkout@v4
        with:
          repository: game-ci/orchestrator
          ref: ${{ github.head_ref || github.ref_name }}
          path: orchestrator-standalone
        continue-on-error: true
        id: orchestrator-branch

      - name: Fallback to orchestrator main branch
        if: steps.orchestrator-branch.outcome == 'failure'
        uses: actions/checkout@v4
        with:
          repository: game-ci/orchestrator
          path: orchestrator-standalone

      - name: Install package manager (from package.json)
        run: |
          corepack enable
          corepack install
      - uses: actions/setup-node@v4
        with:
          node-version: 20
      - name: Resolve yarn cache folder
        id: yarn-config
        run: echo "cacheFolder=$(yarn config get cacheFolder)" >> "$GITHUB_OUTPUT"
      - name: Restore yarn install cache (node_modules + cacheFolder + install-state)
        uses: actions/cache@v4
        with:
          path: |
            ${{ steps.yarn-config.outputs.cacheFolder }}
            .yarn/install-state.gz
          key: yarn-v2-${{ runner.os }}-node-20-${{ hashFiles('yarn.lock') }}
          restore-keys: |
            yarn-v2-${{ runner.os }}-node-20-

      # --- unity-builder compilation and tests ---
      - name: Install unity-builder dependencies
        env:
          YARN_ENABLE_HARDENED_MODE: 'false'
        run: |
          case "$(yarn --version)" in 1.*) echo 'expected up-to-date yarn version'; exit 1 ;; esac
          yarn install --immutable

      - name: Build unity-builder
        run: |
          echo "Building unity-builder TypeScript..."
          npx tsc
          echo "✓ unity-builder compiles successfully"

      - name: Run orchestrator-plugin unit tests
        run: |
          echo "Running orchestrator-plugin unit tests..."
          npx jest orchestrator-plugin --verbose --detectOpenHandles --forceExit

      # --- Plugin loader without orchestrator ---
      - name: Verify plugin loader returns undefined without orchestrator
        run: |
          echo "Checking plugin loader handles missing @game-ci/orchestrator..."
          node -e "
            const { loadOrchestratorPlugin } = require('./lib/model/orchestrator-plugin');
            (async () => {
              const plugin = await loadOrchestratorPlugin();
              if (plugin !== undefined) {
                console.error('ERROR: loadOrchestratorPlugin should return undefined when package not installed');
                process.exit(1);
              }
              console.log('✓ loadOrchestratorPlugin() returns undefined when package not installed');
            })();
          "

      - name: Verify orchestrator type declarations exist
        run: |
          if [ -f "src/types/game-ci-orchestrator.d.ts" ]; then
            echo "✓ Type declarations for @game-ci/orchestrator exist"
          else
            echo "::error::Missing type declarations: src/types/game-ci-orchestrator.d.ts"
            exit 1
          fi

      # --- Orchestrator compilation and tests ---
      - name: Build and pack orchestrator
        working-directory: orchestrator-standalone
        run: |
          yarn install --immutable
          echo "Building orchestrator..."
          npx tsc
          echo "✓ orchestrator compiles successfully"
          echo "Packing orchestrator as tarball..."
          npm pack

      - name: Run orchestrator unit tests
        working-directory: orchestrator-standalone
        run: |
          echo "Running orchestrator unit tests..."
          npx jest --no-cache 2>&1 | tail -20

      # --- Plugin loader with orchestrator installed ---
      - name: Install orchestrator into unity-builder
        run: |
          echo "Installing orchestrator into unity-builder workspace..."
          npm install ./orchestrator-standalone/game-ci-orchestrator-*.tgz --no-save --legacy-peer-deps

      - name: Verify plugin loader returns exports with orchestrator installed
        run: |
          echo "Checking plugin loader returns defined exports..."
          node -e "
            const { loadOrchestratorPlugin } = require('./lib/model/orchestrator-plugin');
            (async () => {
              const plugin = await loadOrchestratorPlugin();
              if (plugin === undefined) {
                console.error('ERROR: loadOrchestratorPlugin should return defined plugin when package is installed');
                process.exit(1);
              }
              const lifecycleMethods = [
                'initialize', 'canHandleBuild', 'handleBuild',
                'beforeLocalBuild', 'afterLocalBuild', 'handlePostBuild',
              ];
              for (const method of lifecycleMethods) {
                if (typeof plugin[method] !== 'function') {
                  console.error('ERROR: plugin.' + method + ' should be a function, got ' + typeof plugin[method]);
                  process.exit(1);
                }
              }
              console.log('✓ loadOrchestratorPlugin() returns plugin with all ' + lifecycleMethods.length + ' lifecycle methods');
            })();
          "

      - name: Verify type declarations match orchestrator exports
        run: |
          echo "Checking type declarations align with orchestrator exports..."
          node -e "
            const orch = require('@game-ci/orchestrator');
            const expectedExports = [
              'Orchestrator', 'BuildReliabilityService', 'TestWorkflowService',
              'HotRunnerService', 'OutputService', 'OutputTypeRegistry',
              'ArtifactUploadHandler', 'IncrementalSyncService',
              'ChildWorkspaceService', 'LocalCacheService', 'SubmoduleProfileService',
              'LfsAgentService', 'GitHooksService',
            ];
            const missing = expectedExports.filter(e => orch[e] === undefined);
            if (missing.length > 0) {
              console.error('ERROR: Missing exports from @game-ci/orchestrator:', missing.join(', '));
              process.exit(1);
            }
            console.log('✓ All ' + expectedExports.length + ' declared exports present in orchestrator package');
          "

      - name: Smoke test orchestrator build wiring
        run: |
          echo "Verifying orchestrator build wiring end-to-end..."
          node -e "
            const { loadOrchestratorPlugin } = require('./lib/model/orchestrator-plugin');

            (async () => {
              // Verify plugin loads successfully with orchestrator installed
              const plugin = await loadOrchestratorPlugin();
              if (plugin === undefined) {
                console.error('ERROR: plugin should be defined when orchestrator is installed');
                process.exit(1);
              }

              // Verify all lifecycle methods are callable
              const lifecycleMethods = [
                'initialize', 'canHandleBuild', 'handleBuild',
                'beforeLocalBuild', 'afterLocalBuild', 'handlePostBuild',
              ];
              for (const m of lifecycleMethods) {
                if (typeof plugin[m] !== 'function') {
                  console.error('ERROR: plugin.' + m + ' should be a function, got ' + typeof plugin[m]);
                  process.exit(1);
                }
              }
              console.log('✓ Plugin has all ' + lifecycleMethods.length + ' lifecycle methods');

              // Verify canHandleBuild returns a boolean
              const canHandle = plugin.canHandleBuild();
              if (typeof canHandle !== 'boolean') {
                console.error('ERROR: canHandleBuild() should return a boolean, got ' + typeof canHandle);
                process.exit(1);
              }
              console.log('✓ canHandleBuild() returns boolean');

              console.log('✓ Plugin architecture wiring verified');
            })();
          "