<?php

declare(strict_types=1);

use App\Framework\DateTime\SystemClock;
use App\Framework\DateTime\SystemHighResolutionClock;
use App\Framework\LiveComponents\Attributes\Action;
use App\Framework\LiveComponents\ComponentEventDispatcher;
use App\Framework\LiveComponents\Contracts\LiveComponentContract;
use App\Framework\LiveComponents\LiveComponentHandler;
use App\Framework\LiveComponents\ParameterBinding\ParameterBinder;
use App\Framework\LiveComponents\Security\ActionAuthorizationChecker;
use App\Framework\LiveComponents\Services\LiveComponentRateLimiter;
use App\Framework\LiveComponents\Validation\SchemaCache;
use App\Framework\LiveComponents\ValueObjects\ActionParameters;
use App\Framework\LiveComponents\ValueObjects\ComponentId;
use App\Framework\LiveComponents\Performance\ActionProfiler;
use App\Framework\Performance\MemoryMonitor;
use App\Framework\Performance\NestedPerformanceTracker;
use App\Framework\Performance\PerformanceCategory;

/**
 * Integration Tests for LiveComponent Performance Profiling
 *
 * Tests the integration between:
 * - LiveComponentHandler
 * - NestedPerformanceTracker
 * - ActionProfiler
 * - Component Lifecycle Profiling
 */
describe('LiveComponent Profiling Integration', function () {
    beforeEach(function () {
        // Initialize performance tracking infrastructure
        $this->tracker = new NestedPerformanceTracker(
            new SystemClock(),
            new SystemHighResolutionClock(),
            new MemoryMonitor()
        );

        $this->profiler = new ActionProfiler($this->tracker);

        // Mock dependencies for LiveComponentHandler
        $this->eventDispatcher = new ComponentEventDispatcher();

        // Simple anonymous class mocks instead of Mockery (to avoid readonly property issues)
        $this->session = new class implements \App\Framework\Http\Session\SessionInterface {
            public readonly object $csrf;
            public readonly object $validation;
            public readonly object $form;

            public function __construct()
            {
                $this->csrf = new class {
                    public function validateToken(string $formId, string $token): bool
                    {
                        return true;
                    }
                };
                $this->validation = new class {};
                $this->form = new class {};
            }

            public function get(string $key, mixed $default = null): mixed { return $default; }
            public function set(string $key, mixed $value): void {}
            public function has(string $key): bool { return false; }
            public function remove(string $key): void {}
            public function clear(): void {}
            public function all(): array { return []; }
            public function getId(): \App\Framework\Http\Session\SessionId { return new \App\Framework\Http\Session\SessionId('test-session-id'); }
            public static function fromArray(\App\Framework\Http\Session\SessionId $sessionId, \App\Framework\DateTime\Clock $clock, \App\Framework\Security\CsrfTokenGenerator $csrfTokenGenerator, array $data): self { return new self(); }
        };

        $this->authChecker = new class implements \App\Framework\LiveComponents\Security\ActionAuthorizationChecker {
            public function isAuthorized($component, string $method, $permissionAttribute): bool
            {
                return true;
            }

            public function getUserPermissions(): array
            {
                return [];
            }

            public function hasPermission(string $permission): bool
            {
                return true;
            }

            public function isAuthenticated(): bool
            {
                return true;
            }
        };

        $this->schemaCache = new SchemaCache();

        $this->rateLimiter = new class {
            public function checkActionLimit($component, string $method, string $clientId, $actionAttr): \App\Framework\LiveComponents\ValueObjects\RateLimitResult
            {
                return new \App\Framework\LiveComponents\ValueObjects\RateLimitResult(
                    allowed: true,
                    limit: 100,
                    current: 1,
                    retryAfter: null
                );
            }
        };

        $this->idempotency = new class {
            public function execute(mixed $key, callable $operation, mixed $ttl): mixed
            {
                return $operation();
            }
        };

        $this->parameterBinder = new class {
            public function bindParameters(\ReflectionMethod $method, ActionParameters $params): array
            {
                return [];
            }
        };

        $this->frameworkDispatcher = new class {
            public function dispatch($event): void {}
        };

        // Create handler with performance tracker
        $this->handler = new LiveComponentHandler(
            $this->eventDispatcher,
            $this->session,
            $this->authChecker,
            $this->schemaCache,
            $this->rateLimiter,
            $this->idempotency,
            $this->parameterBinder,
            $this->frameworkDispatcher,
            $this->tracker // PerformanceTracker injected here
        );
    });

    it('tracks performance for component action execution', function () {
        // Create test component
        $component = new class implements LiveComponentContract {
            public ComponentId $id;
            public object $state;

            public function __construct()
            {
                $this->id = ComponentId::create('test-counter', 'profiling-1');
                $this->state = new class {
                    public int $count = 0;

                    public function toArray(): array
                    {
                        return ['count' => $this->count];
                    }
                };
            }

            #[Action]
            public function increment(): object
            {
                // Simulate some work
                usleep(5000); // 5ms

                $newState = clone $this->state;
                $newState->count++;

                return $newState;
            }
        };

        // Execute action
        $params = ActionParameters::create([
            '_csrf_token' => 'valid-token'
        ]);

        $this->handler->handle($component, 'increment', $params);

        // Verify performance tracking
        $timeline = $this->tracker->generateTimeline();

        expect($timeline)->toBeArray();
        expect($timeline)->not->toBeEmpty();

        // Find the main component action measurement
        $componentMeasurements = array_filter($timeline, function ($event) {
            return str_contains($event['name'], 'livecomponent.test-counter.increment');
        });

        expect($componentMeasurements)->not->toBeEmpty();

        $mainMeasurement = array_values($componentMeasurements)[0];
        expect($mainMeasurement['category'])->toBe('custom');
        expect($mainMeasurement['duration_ms'])->toBeGreaterThan(4); // At least 5ms from usleep
    });

    it('tracks nested profiling for schema derivation', function () {
        $component = new class implements LiveComponentContract {
            public ComponentId $id;
            public object $state;

            public function __construct()
            {
                $this->id = ComponentId::create('schema-test', 'nested-1');
                $this->state = new class {
                    public string $value = 'test';

                    public function toArray(): array
                    {
                        return ['value' => $this->value];
                    }
                };
            }

            #[Action]
            public function update(): object
            {
                return $this->state;
            }
        };

        $params = ActionParameters::create(['_csrf_token' => 'valid-token']);

        $this->handler->handle($component, 'update', $params);

        $timeline = $this->tracker->generateTimeline();

        // Should have nested measurements for:
        // 1. Main component action
        // 2. Schema derivation
        // 3. Action execution
        // 4. State validation

        $schemaMeasurements = array_filter($timeline, fn($e) => str_contains($e['name'], 'schema.derive'));
        $actionMeasurements = array_filter($timeline, fn($e) => str_contains($e['name'], 'action.execute'));
        $validationMeasurements = array_filter($timeline, fn($e) => str_contains($e['name'], 'state.validate'));

        expect($schemaMeasurements)->not->toBeEmpty();
        expect($actionMeasurements)->not->toBeEmpty();
        expect($validationMeasurements)->not->toBeEmpty();
    });

    it('tracks lifecycle hook performance (onMount)', function () {
        $component = new class implements LiveComponentContract, \App\Framework\LiveComponents\Contracts\LifecycleAware {
            public ComponentId $id;
            public object $state;
            public bool $mountCalled = false;

            public function __construct()
            {
                $this->id = ComponentId::create('lifecycle-test', 'mount-1');
                $this->state = new class {
                    public array $data = [];

                    public function toArray(): array
                    {
                        return $this->data;
                    }
                };
            }

            public function onMount(): void
            {
                // Simulate initialization work
                usleep(2000); // 2ms
                $this->mountCalled = true;
            }

            public function onUpdate(): void
            {
                // Not tested here
            }

            #[Action]
            public function test(): object
            {
                return $this->state;
            }
        };

        // Call onMount via handler
        $this->handler->callMountHook($component);

        expect($component->mountCalled)->toBeTrue();

        $timeline = $this->tracker->generateTimeline();

        $mountMeasurements = array_filter($timeline, fn($e) => str_contains($e['name'], 'lifecycle.onMount'));

        expect($mountMeasurements)->not->toBeEmpty();

        $mountMeasurement = array_values($mountMeasurements)[0];
        expect($mountMeasurement['duration_ms'])->toBeGreaterThan(1); // At least 2ms
        expect($mountMeasurement['context'])->toHaveKey('component');
        expect($mountMeasurement['context']['component'])->toBe('lifecycle-test');
    });

    it('tracks lifecycle hook performance (onUpdate)', function () {
        $component = new class implements LiveComponentContract, \App\Framework\LiveComponents\Contracts\LifecycleAware {
            public ComponentId $id;
            public object $state;
            public bool $updateCalled = false;

            public function __construct()
            {
                $this->id = ComponentId::create('lifecycle-test', 'update-1');
                $this->state = new class {
                    public int $counter = 0;

                    public function toArray(): array
                    {
                        return ['counter' => $this->counter];
                    }
                };
            }

            public function onMount(): void
            {
                // Not tested here
            }

            public function onUpdate(): void
            {
                // Simulate update work
                usleep(3000); // 3ms
                $this->updateCalled = true;
            }

            #[Action]
            public function increment(): object
            {
                $newState = clone $this->state;
                $newState->counter++;
                return $newState;
            }
        };

        $params = ActionParameters::create(['_csrf_token' => 'valid-token']);

        $this->handler->handle($component, 'increment', $params);

        expect($component->updateCalled)->toBeTrue();

        $timeline = $this->tracker->generateTimeline();

        $updateMeasurements = array_filter($timeline, fn($e) => str_contains($e['name'], 'lifecycle.onUpdate'));

        expect($updateMeasurements)->not->toBeEmpty();

        $updateMeasurement = array_values($updateMeasurements)[0];
        expect($updateMeasurement['duration_ms'])->toBeGreaterThan(2); // At least 3ms
    });

    it('provides context data for all profiled operations', function () {
        $component = new class implements LiveComponentContract {
            public ComponentId $id;
            public object $state;

            public function __construct()
            {
                $this->id = ComponentId::create('context-component', 'ctx-1');
                $this->state = new class {
                    public string $name = 'test';

                    public function toArray(): array
                    {
                        return ['name' => $this->name];
                    }
                };
            }

            #[Action]
            public function doSomething(): object
            {
                usleep(1000);
                return $this->state;
            }
        };

        $params = ActionParameters::create(['_csrf_token' => 'valid-token']);

        $this->handler->handle($component, 'doSomething', $params);

        $timeline = $this->tracker->generateTimeline();

        // Check that context is provided for measurements
        foreach ($timeline as $event) {
            if (str_contains($event['name'], 'livecomponent.context-component')) {
                expect($event)->toHaveKey('context');
                expect($event['context'])->toHaveKey('component');
                expect($event['context']['component'])->toBe('context-component');

                if (str_contains($event['name'], 'livecomponent.context-component.doSomething')) {
                    expect($event['context'])->toHaveKey('action');
                    expect($event['context']['action'])->toBe('doSomething');
                }
            }
        }
    });

    it('tracks memory usage for component actions', function () {
        $component = new class implements LiveComponentContract {
            public ComponentId $id;
            public object $state;

            public function __construct()
            {
                $this->id = ComponentId::create('memory-test', 'mem-1');
                $this->state = new class {
                    public array $data = [];

                    public function toArray(): array
                    {
                        return $this->data;
                    }
                };
            }

            #[Action]
            public function allocateMemory(): object
            {
                // Allocate some memory
                $data = array_fill(0, 5000, str_repeat('x', 100)); // ~0.5MB

                $newState = clone $this->state;
                $newState->data = $data;

                return $newState;
            }
        };

        $params = ActionParameters::create(['_csrf_token' => 'valid-token']);

        $this->handler->handle($component, 'allocateMemory', $params);

        $timeline = $this->tracker->generateTimeline();

        // Find component action measurement
        $componentMeasurements = array_filter($timeline, function ($event) {
            return str_contains($event['name'], 'livecomponent.memory-test.allocateMemory');
        });

        expect($componentMeasurements)->not->toBeEmpty();

        $measurement = array_values($componentMeasurements)[0];

        // Should have memory tracking
        expect($measurement)->toHaveKey('memory_delta_mb');
        expect($measurement['memory_delta_mb'])->toBeGreaterThan(0);
    });

    it('integrates with ActionProfiler for detailed metrics', function () {
        $component = new class implements LiveComponentContract {
            public ComponentId $id;
            public object $state;

            public function __construct()
            {
                $this->id = ComponentId::create('profiler-test', 'prof-1');
                $this->state = new class {
                    public int $value = 0;

                    public function toArray(): array
                    {
                        return ['value' => $this->value];
                    }
                };
            }

            #[Action]
            public function process(): object
            {
                usleep(10000); // 10ms
                return $this->state;
            }
        };

        $params = ActionParameters::create(['_csrf_token' => 'valid-token']);

        // Execute action multiple times
        for ($i = 0; $i < 3; $i++) {
            $this->handler->handle($component, 'process', $params);
            $this->tracker->reset(); // Reset for next execution
        }

        // Note: ActionProfiler methods would need to be used here
        // This test verifies the integration point exists
        expect($this->profiler)->toBeInstanceOf(ActionProfiler::class);
    });

    it('handles fast actions without overhead', function () {
        $component = new class implements LiveComponentContract {
            public ComponentId $id;
            public object $state;

            public function __construct()
            {
                $this->id = ComponentId::create('fast-action', 'fast-1');
                $this->state = new class {
                    public bool $flag = false;

                    public function toArray(): array
                    {
                        return ['flag' => $this->flag];
                    }
                };
            }

            #[Action]
            public function toggle(): object
            {
                // Very fast action - no usleep
                $newState = clone $this->state;
                $newState->flag = !$newState->flag;
                return $newState;
            }
        };

        $params = ActionParameters::create(['_csrf_token' => 'valid-token']);

        $start = microtime(true);
        $this->handler->handle($component, 'toggle', $params);
        $duration = (microtime(true) - $start) * 1000;

        // Performance tracking should add minimal overhead (<5ms for very fast actions)
        expect($duration)->toBeLessThan(10);

        $timeline = $this->tracker->generateTimeline();
        expect($timeline)->not->toBeEmpty();
    });

    it('tracks performance categories correctly', function () {
        $component = new class implements LiveComponentContract {
            public ComponentId $id;
            public object $state;

            public function __construct()
            {
                $this->id = ComponentId::create('category-test', 'cat-1');
                $this->state = new class {
                    public array $items = [];

                    public function toArray(): array
                    {
                        return ['items' => $this->items];
                    }
                };
            }

            #[Action]
            public function load(): object
            {
                return $this->state;
            }
        };

        $params = ActionParameters::create(['_csrf_token' => 'valid-token']);

        $this->handler->handle($component, 'load', $params);

        $timeline = $this->tracker->generateTimeline();

        // Verify categories
        $categoryCounts = [];
        foreach ($timeline as $event) {
            $category = $event['category'];
            $categoryCounts[$category] = ($categoryCounts[$category] ?? 0) + 1;
        }

        // Should have:
        // - CUSTOM for main component action
        // - CACHE for schema derivation
        expect($categoryCounts)->toHaveKey('custom');
        expect($categoryCounts)->toHaveKey('cache');
    });
});

describe('LiveComponent Profiling - Error Scenarios', function () {
    beforeEach(function () {
        $this->tracker = new NestedPerformanceTracker(
            new SystemClock(),
            new SystemHighResolutionClock(),
            new MemoryMonitor()
        );

        $this->profiler = new ActionProfiler($this->tracker);
        $this->eventDispatcher = new ComponentEventDispatcher();

        // Simple mocks (copy from first describe block)
        $this->session = new class {
            public readonly object $csrf;
            public readonly object $validation;
            public readonly object $form;

            public function __construct()
            {
                $this->csrf = new class {
                    public function validateToken(string $formId, string $token): bool { return true; }
                };
                $this->validation = new class {};
                $this->form = new class {};
            }
        };

        $this->authChecker = new class implements \App\Framework\LiveComponents\Security\ActionAuthorizationChecker {
            public function isAuthorized($component, string $method, $permissionAttribute): bool { return true; }
            public function getUserPermissions(): array { return []; }
            public function hasPermission(string $permission): bool { return true; }
            public function isAuthenticated(): bool { return true; }
        };

        $this->schemaCache = new SchemaCache();

        $this->rateLimiter = new class {
            public function checkActionLimit($component, string $method, string $clientId, $actionAttr): \App\Framework\LiveComponents\ValueObjects\RateLimitResult {
                return new \App\Framework\LiveComponents\ValueObjects\RateLimitResult(allowed: true, limit: 100, current: 1, retryAfter: null);
            }
        };

        $this->idempotency = new class {
            public function execute(mixed $key, callable $operation, mixed $ttl): mixed { return $operation(); }
        };

        $this->parameterBinder = new class {
            public function bindParameters(\ReflectionMethod $method, ActionParameters $params): array { return []; }
        };

        $this->frameworkDispatcher = new class {
            public function dispatch($event): void {}
        };

        $this->handler = new LiveComponentHandler(
            $this->eventDispatcher,
            $this->session,
            $this->authChecker,
            $this->schemaCache,
            $this->rateLimiter,
            $this->idempotency,
            $this->parameterBinder,
            $this->frameworkDispatcher,
            $this->tracker
        );
    });

    it('tracks performance even when action throws exception', function () {
        $component = new class implements LiveComponentContract {
            public ComponentId $id;
            public object $state;

            public function __construct()
            {
                $this->id = ComponentId::create('error-test', 'err-1');
                $this->state = new class {
                    public function toArray(): array
                    {
                        return [];
                    }
                };
            }

            #[Action]
            public function failing(): object
            {
                usleep(3000); // 3ms before error
                throw new \RuntimeException('Action failed');
            }
        };

        $params = ActionParameters::create(['_csrf_token' => 'valid-token']);

        try {
            $this->handler->handle($component, 'failing', $params);
            expect(true)->toBeFalse('Should have thrown exception');
        } catch (\RuntimeException $e) {
            expect($e->getMessage())->toBe('Action failed');
        }

        // Performance should still be tracked even though action failed
        $timeline = $this->tracker->generateTimeline();

        $actionMeasurements = array_filter($timeline, fn($e) => str_contains($e['name'], 'action.execute'));

        expect($actionMeasurements)->not->toBeEmpty();

        // The execution time should reflect the work done before the exception
        $measurement = array_values($actionMeasurements)[0];
        expect($measurement['duration_ms'])->toBeGreaterThan(2);
    });

    it('handles lifecycle hook errors gracefully while still tracking', function () {
        $component = new class implements LiveComponentContract, \App\Framework\LiveComponents\Contracts\LifecycleAware {
            public ComponentId $id;
            public object $state;

            public function __construct()
            {
                $this->id = ComponentId::create('lifecycle-error', 'err-2');
                $this->state = new class {
                    public function toArray(): array
                    {
                        return [];
                    }
                };
            }

            public function onMount(): void
            {
                usleep(1000);
                throw new \Exception('Mount failed');
            }

            public function onUpdate(): void
            {
                // Not tested
            }

            #[Action]
            public function test(): object
            {
                return $this->state;
            }
        };

        // Should not throw - lifecycle hook errors are caught
        $this->handler->callMountHook($component);

        $timeline = $this->tracker->generateTimeline();

        // Performance tracking should still work
        $mountMeasurements = array_filter($timeline, fn($e) => str_contains($e['name'], 'lifecycle.onMount'));

        expect($mountMeasurements)->not->toBeEmpty();
    });
});

describe('LiveComponent Profiling - Performance Benchmarks', function () {
    beforeEach(function () {
        $this->tracker = new NestedPerformanceTracker(
            new SystemClock(),
            new SystemHighResolutionClock(),
            new MemoryMonitor()
        );

        $this->profiler = new ActionProfiler($this->tracker);
        $this->eventDispatcher = new ComponentEventDispatcher();

        // Simple mocks (copy from first describe block)
        $this->session = new class {
            public readonly object $csrf;
            public readonly object $validation;
            public readonly object $form;

            public function __construct()
            {
                $this->csrf = new class {
                    public function validateToken(string $formId, string $token): bool { return true; }
                };
                $this->validation = new class {};
                $this->form = new class {};
            }
        };

        $this->authChecker = new class implements \App\Framework\LiveComponents\Security\ActionAuthorizationChecker {
            public function isAuthorized($component, string $method, $permissionAttribute): bool { return true; }
            public function getUserPermissions(): array { return []; }
            public function hasPermission(string $permission): bool { return true; }
            public function isAuthenticated(): bool { return true; }
        };

        $this->schemaCache = new SchemaCache();

        $this->rateLimiter = new class {
            public function checkActionLimit($component, string $method, string $clientId, $actionAttr): \App\Framework\LiveComponents\ValueObjects\RateLimitResult {
                return new \App\Framework\LiveComponents\ValueObjects\RateLimitResult(allowed: true, limit: 100, current: 1, retryAfter: null);
            }
        };

        $this->idempotency = new class {
            public function execute(mixed $key, callable $operation, mixed $ttl): mixed { return $operation(); }
        };

        $this->parameterBinder = new class {
            public function bindParameters(\ReflectionMethod $method, ActionParameters $params): array { return []; }
        };

        $this->frameworkDispatcher = new class {
            public function dispatch($event): void {}
        };

        $this->handler = new LiveComponentHandler(
            $this->eventDispatcher,
            $this->session,
            $this->authChecker,
            $this->schemaCache,
            $this->rateLimiter,
            $this->idempotency,
            $this->parameterBinder,
            $this->frameworkDispatcher,
            $this->tracker
        );
    });

    it('measures overhead of profiling system', function () {
        $component = new class implements LiveComponentContract {
            public ComponentId $id;
            public object $state;

            public function __construct()
            {
                $this->id = ComponentId::create('benchmark', 'bench-1');
                $this->state = new class {
                    public int $counter = 0;

                    public function toArray(): array
                    {
                        return ['counter' => $this->counter];
                    }
                };
            }

            #[Action]
            public function noop(): object
            {
                // Minimal work - just to measure overhead
                return $this->state;
            }
        };

        $params = ActionParameters::create(['_csrf_token' => 'valid-token']);

        // Execute multiple times to get average
        $executions = 100;
        $totalTime = 0;

        for ($i = 0; $i < $executions; $i++) {
            $start = microtime(true);
            $this->handler->handle($component, 'noop', $params);
            $totalTime += (microtime(true) - $start) * 1000;
            $this->tracker->reset();
        }

        $avgTime = $totalTime / $executions;

        // Average execution time should be reasonable (<5ms per action with profiling)
        expect($avgTime)->toBeLessThan(5);

        // Should be able to handle 200+ actions per second
        $actionsPerSecond = 1000 / $avgTime;
        expect($actionsPerSecond)->toBeGreaterThan(200);
    });
});