<?php

declare(strict_types=1);

use App\Framework\Cache\Cache;
use App\Framework\Cache\CacheKey;
use App\Framework\Cache\Driver\InMemoryCache;
use App\Framework\Cache\GeneralCache;
use App\Framework\Serializer\Php\PhpSerializer;
use App\Framework\Cache\Warming\CacheWarmingService;
use App\Framework\Cache\Warming\Strategies\CriticalPathWarmingStrategy;
use App\Framework\Cache\Warming\ScheduledWarmupJob;
use App\Framework\Router\CompiledRoutes;
use App\Framework\Config\Environment;
use App\Framework\Logging\Logger;
use App\Framework\Core\ValueObjects\Duration;

describe('Cache Warming Integration', function () {
    beforeEach(function () {
        // Use InMemoryCache for tests (no file permissions needed)
        $inMemoryCache = new InMemoryCache();
        $serializer = new PhpSerializer();
        $this->cache = new GeneralCache($inMemoryCache, $serializer);

        $this->logger = Mockery::mock(Logger::class);
        $this->logger->shouldReceive('info')->andReturnNull();
        $this->logger->shouldReceive('debug')->andReturnNull();
        $this->logger->shouldReceive('error')->andReturnNull();

        // Use real CompiledRoutes instance for testing
        $this->compiledRoutes = new CompiledRoutes(
            staticRoutes: [
                'GET' => [
                    'default' => [
                        '/home' => null,  // Route objects not needed for cache warming test
                        '/about' => null,
                    ]
                ]
            ],
            dynamicPatterns: [
                'GET' => [
                    'default' => null  // CompiledPattern not needed for basic test
                ]
            ],
            namedRoutes: []
        );

        // Use real Environment instance for testing
        $this->environment = new Environment([
            'APP_ENV' => 'testing',
            'APP_DEBUG' => 'true',
        ]);
    });

    afterEach(function () {
        Mockery::close();
    });

    it('warms cache end-to-end', function () {
        $strategy = new CriticalPathWarmingStrategy(
            cache: $this->cache,
            compiledRoutes: $this->compiledRoutes,
            environment: $this->environment
        );

        $service = new CacheWarmingService(
            logger: $this->logger,
            strategies: [$strategy]
        );

        // Execute warmup
        $metrics = $service->warmAll();

        expect($metrics->totalStrategiesExecuted)->toBe(1);
        expect($metrics->totalItemsWarmed)->toBeGreaterThan(0);
        expect($metrics->getOverallSuccessRate())->toBe(1.0); // 100% success

        // Verify cache was populated
        $routesKey = CacheKey::fromString('routes_static');
        $cachedRoutes = $this->cache->get($routesKey);

        expect($cachedRoutes)->not->toBeNull();
        expect($cachedRoutes->value)->toBeArray();
    });

    it('integrates with ScheduledWarmupJob', function () {
        $strategy = new CriticalPathWarmingStrategy(
            cache: $this->cache,
            compiledRoutes: $this->compiledRoutes,
            environment: $this->environment
        );

        $service = new CacheWarmingService(
            logger: $this->logger,
            strategies: [$strategy]
        );

        $scheduledJob = new ScheduledWarmupJob(
            warmingService: $service,
            logger: $this->logger
        );

        // Execute scheduled warmup
        $result = $scheduledJob->warmCriticalPaths();

        expect($result)->toBeArray();
        expect($result['total_strategies_executed'])->toBe(1);
        expect($result['total_items_warmed'])->toBeGreaterThan(0);
    });

    it('handles priority-based warmup', function () {
        $strategy = new CriticalPathWarmingStrategy(
            cache: $this->cache,
            compiledRoutes: $this->compiledRoutes,
            environment: $this->environment
        );

        $service = new CacheWarmingService(
            logger: $this->logger,
            strategies: [$strategy]
        );

        // Warm only high priority
        $metrics = $service->warmByPriority(500); // HIGH priority threshold

        expect($metrics->totalStrategiesExecuted)->toBe(1); // Critical > High
        expect($metrics->totalItemsWarmed)->toBeGreaterThan(0);
    });

    it('supports forced warmup', function () {
        $strategy = new CriticalPathWarmingStrategy(
            cache: $this->cache,
            compiledRoutes: $this->compiledRoutes,
            environment: $this->environment
        );

        $service = new CacheWarmingService(
            logger: $this->logger,
            strategies: [$strategy]
        );

        // First warmup
        $service->warmAll();

        // Second warmup (forced) should re-warm even if cache exists
        $metrics = $service->warmAll(force: true);

        expect($metrics->totalStrategiesExecuted)->toBe(1);
        expect($metrics->totalItemsWarmed)->toBeGreaterThan(0);
    });

    it('provides accurate metrics', function () {
        $strategy = new CriticalPathWarmingStrategy(
            cache: $this->cache,
            compiledRoutes: $this->compiledRoutes,
            environment: $this->environment
        );

        $service = new CacheWarmingService(
            logger: $this->logger,
            strategies: [$strategy]
        );

        $startTime = microtime(true);
        $metrics = $service->warmAll();
        $actualDuration = microtime(true) - $startTime;

        expect($metrics->totalDurationSeconds)->toBeGreaterThan(0);
        expect($metrics->totalDurationSeconds)->toBeLessThan($actualDuration + 1); // Allow 1s margin
        expect($metrics->totalMemoryUsedBytes)->toBeGreaterThan(0);
        expect($metrics->getOverallSuccessRate())->toBeGreaterThan(0.5);
    });

    it('handles multiple strategies correctly', function () {
        $strategy1 = new CriticalPathWarmingStrategy(
            cache: $this->cache,
            compiledRoutes: $this->compiledRoutes,
            environment: $this->environment
        );

        // Create a second mock strategy
        $strategy2 = Mockery::mock(\App\Framework\Cache\Warming\WarmupStrategy::class);
        $strategy2->shouldReceive('getName')->andReturn('test_strategy');
        $strategy2->shouldReceive('getPriority')->andReturn(100);
        $strategy2->shouldReceive('shouldRun')->andReturn(true);
        $strategy2->shouldReceive('getEstimatedDuration')->andReturn(1);
        $strategy2->shouldReceive('warmup')->andReturn(
            new \App\Framework\Cache\Warming\ValueObjects\WarmupResult(
                strategyName: 'test_strategy',
                itemsWarmed: 5,
                itemsFailed: 0,
                durationSeconds: 0.5,
                memoryUsedBytes: 512
            )
        );

        $service = new CacheWarmingService(
            strategies: [$strategy1, $strategy2],
            logger: $this->logger
        );

        $metrics = $service->warmAll();

        expect($metrics->totalStrategiesExecuted)->toBe(2);
        expect($metrics->strategyResults)->toHaveCount(2);
    });
});