<?php

declare(strict_types=1);

namespace Tests\Performance\Benchmarks;

use App\Framework\Performance\Contracts\PerformanceCollectorInterface;
use App\Framework\Performance\PerformanceCategory;
use App\Framework\Router\HttpRouter;
use App\Framework\Http\HttpRequest;
use App\Framework\Http\Method;
use App\Framework\Http\ServerEnvironment;
use App\Framework\Http\ParsedUri;
use Tests\Performance\PerformanceTestCase;
use Tests\Performance\PerformanceBenchmarkResult;

/**
 * Performance benchmarks for routing system
 *
 * Tests routing performance including:
 * - Route matching speed
 * - Parameter extraction
 * - Middleware resolution
 * - Static vs dynamic routes
 */
final readonly class RoutingBenchmark extends PerformanceTestCase
{
    public function __construct(
        PerformanceCollectorInterface $collector,
        private HttpRouter $router
    ) {
        parent::__construct($collector);
    }

    /**
     * Benchmark static route matching (no parameters)
     */
    public function benchmarkStaticRouteMatching(): PerformanceBenchmarkResult
    {
        $request = $this->createRequest('/api/health', Method::GET);

        $result = $this->benchmark(
            operation: fn() => $this->router->match($request),
            iterations: 10000,
            name: 'Static Route Matching'
        );

        // Assert performance threshold: static routes should be very fast
        $this->assertPerformanceThreshold($result, maxAvgTimeMs: 0.1);

        // Record metrics
        $this->recordBenchmark($result, PerformanceCategory::ROUTING);

        return $result;
    }

    /**
     * Benchmark dynamic route matching (with parameters)
     */
    public function benchmarkDynamicRouteMatching(): PerformanceBenchmarkResult
    {
        $request = $this->createRequest('/api/users/123', Method::GET);

        $result = $this->benchmark(
            operation: fn() => $this->router->match($request),
            iterations: 10000,
            name: 'Dynamic Route Matching'
        );

        // Assert performance threshold: dynamic routes can be slightly slower
        $this->assertPerformanceThreshold($result, maxAvgTimeMs: 0.5);

        $this->recordBenchmark($result, PerformanceCategory::ROUTING);

        return $result;
    }

    /**
     * Benchmark complex route matching (multiple parameters)
     */
    public function benchmarkComplexRouteMatching(): PerformanceBenchmarkResult
    {
        $request = $this->createRequest('/api/v1/users/123/posts/456/comments', Method::GET);

        $result = $this->benchmark(
            operation: fn() => $this->router->match($request),
            iterations: 10000,
            name: 'Complex Route Matching'
        );

        // Assert performance threshold: complex routes with multiple params
        $this->assertPerformanceThreshold($result, maxAvgTimeMs: 1.0);

        $this->recordBenchmark($result, PerformanceCategory::ROUTING);

        return $result;
    }

    /**
     * Benchmark route matching with query parameters
     */
    public function benchmarkRouteWithQueryParams(): PerformanceBenchmarkResult
    {
        $request = $this->createRequest(
            '/api/search?q=test&limit=10&offset=0&sort=name',
            Method::GET
        );

        $result = $this->benchmark(
            operation: fn() => $this->router->match($request),
            iterations: 10000,
            name: 'Route Matching with Query Params'
        );

        $this->assertPerformanceThreshold($result, maxAvgTimeMs: 0.2);

        $this->recordBenchmark($result, PerformanceCategory::ROUTING);

        return $result;
    }

    /**
     * Benchmark route not found scenario
     */
    public function benchmarkRouteNotFound(): PerformanceBenchmarkResult
    {
        $request = $this->createRequest('/non-existent-route', Method::GET);

        $result = $this->benchmark(
            operation: function() use ($request) {
                try {
                    $this->router->match($request);
                } catch (\Exception $e) {
                    // Expected - route not found
                }
            },
            iterations: 10000,
            name: 'Route Not Found'
        );

        // Route not found should still be fast (fail fast principle)
        $this->assertPerformanceThreshold($result, maxAvgTimeMs: 0.1);

        $this->recordBenchmark($result, PerformanceCategory::ROUTING);

        return $result;
    }

    /**
     * Benchmark POST route matching
     */
    public function benchmarkPostRouteMatching(): PerformanceBenchmarkResult
    {
        $request = $this->createRequest('/api/users', Method::POST);

        $result = $this->benchmark(
            operation: fn() => $this->router->match($request),
            iterations: 10000,
            name: 'POST Route Matching'
        );

        $this->assertPerformanceThreshold($result, maxAvgTimeMs: 0.2);

        $this->recordBenchmark($result, PerformanceCategory::ROUTING);

        return $result;
    }

    /**
     * Run all routing benchmarks and return summary
     */
    public function runAllBenchmarks(): array
    {
        return [
            'static_route' => $this->benchmarkStaticRouteMatching(),
            'dynamic_route' => $this->benchmarkDynamicRouteMatching(),
            'complex_route' => $this->benchmarkComplexRouteMatching(),
            'query_params' => $this->benchmarkRouteWithQueryParams(),
            'route_not_found' => $this->benchmarkRouteNotFound(),
            'post_route' => $this->benchmarkPostRouteMatching(),
        ];
    }

    /**
     * Helper: Create HTTP request for testing
     */
    private function createRequest(string $uri, Method $method): HttpRequest
    {
        $parsedUri = ParsedUri::fromString('https://localhost' . $uri);

        $server = new ServerEnvironment([
            'REQUEST_METHOD' => $method->value,
            'REQUEST_URI' => $uri,
            'SERVER_NAME' => 'localhost',
            'SERVER_PORT' => '443',
            'HTTPS' => 'on'
        ]);

        return new HttpRequest(
            method: $method,
            uri: $parsedUri,
            server: $server,
            headers: [],
            body: '',
            parsedBody: null,
            queryParameters: $parsedUri->query ?? [],
            cookies: [],
            files: []
        );
    }
}