<?php

declare(strict_types=1);

use App\Framework\ExceptionHandling\Context\ExceptionContextData;
use App\Framework\ExceptionHandling\Context\ExceptionContextProvider;
use App\Framework\ExceptionHandling\Factory\ExceptionFactory;
use App\Framework\ExceptionHandling\Scope\ErrorScope;
use App\Framework\ExceptionHandling\Scope\ErrorScopeContext;

describe('Exception Context Integration', function () {
    beforeEach(function () {
        $this->contextProvider = ExceptionContextProvider::instance();
        $this->errorScope = new ErrorScope();
        $this->factory = new ExceptionFactory($this->contextProvider, $this->errorScope);

        // Clear any existing contexts
        $this->contextProvider->clear();
    });

    it('creates slim exception with external context via WeakMap', function () {
        $context = ExceptionContextData::forOperation('user.create', 'UserService')
            ->addData(['user_id' => '123', 'email' => 'test@example.com']);

        $exception = $this->factory->create(
            RuntimeException::class,
            'User creation failed',
            $context
        );

        // Exception is slim (pure PHP)
        expect($exception)->toBeInstanceOf(RuntimeException::class);
        expect($exception->getMessage())->toBe('User creation failed');

        // Context is stored externally
        $storedContext = $this->contextProvider->get($exception);
        expect($storedContext)->not->toBeNull();
        expect($storedContext->operation)->toBe('user.create');
        expect($storedContext->component)->toBe('UserService');
        expect($storedContext->data)->toBe([
            'user_id' => '123',
            'email' => 'test@example.com'
        ]);
    });

    it('automatically enriches context from error scope', function () {
        // Enter HTTP scope
        $scopeContext = ErrorScopeContext::http(
            request: createMockRequest(),
            operation: 'api.request',
            component: 'ApiController'
        )->withUserId('user-456');

        $this->errorScope->enter($scopeContext);

        // Create exception without explicit context
        $exception = $this->factory->create(
            RuntimeException::class,
            'API request failed'
        );

        // Context is enriched from scope
        $storedContext = $this->contextProvider->get($exception);
        expect($storedContext)->not->toBeNull();
        expect($storedContext->userId)->toBe('user-456');
        expect($storedContext->metadata)->toHaveKey('scope_type');
        expect($storedContext->metadata['scope_type'])->toBe('http');
    });

    it('supports WeakMap automatic garbage collection', function () {
        $exception = new RuntimeException('Test exception');
        $context = ExceptionContextData::forOperation('test.operation');

        $this->contextProvider->attach($exception, $context);

        // Context exists
        expect($this->contextProvider->has($exception))->toBeTrue();

        // Unset exception reference
        unset($exception);

        // Force garbage collection
        gc_collect_cycles();

        // WeakMap automatically cleaned up (we can't directly test this,
        // but stats should reflect fewer contexts after GC)
        $stats = $this->contextProvider->getStats();
        expect($stats)->toHaveKey('total_contexts');
    });

    it('enhances existing exception with additional context', function () {
        $exception = new RuntimeException('Original error');
        $originalContext = ExceptionContextData::forOperation('operation.1')
            ->addData(['step' => 1]);

        $this->contextProvider->attach($exception, $originalContext);

        // Enhance with additional context
        $additionalContext = ExceptionContextData::empty()
            ->addData(['step' => 2, 'error_code' => 'E001']);

        $this->factory->enhance($exception, $additionalContext);

        // Context is merged
        $storedContext = $this->contextProvider->get($exception);
        expect($storedContext->data)->toBe([
            'step' => 2, // Overwrites
            'error_code' => 'E001' // Adds
        ]);
    });

    it('supports fiber-aware error scopes', function () {
        // Main scope
        $mainScope = ErrorScopeContext::generic(
            'main',
            'main.operation'
        );
        $this->errorScope->enter($mainScope);

        // Create fiber scope
        $fiber = new Fiber(function () {
            $fiberScope = ErrorScopeContext::generic(
                'fiber',
                'fiber.operation'
            );
            $this->errorScope->enter($fiberScope);

            $exception = $this->factory->create(
                RuntimeException::class,
                'Fiber error'
            );

            // Context from fiber scope
            $context = $this->contextProvider->get($exception);
            expect($context->operation)->toBe('fiber.operation');

            $this->errorScope->exit();
        });

        $fiber->start();

        // Main scope still active
        $exception = $this->factory->create(
            RuntimeException::class,
            'Main error'
        );
        $context = $this->contextProvider->get($exception);
        expect($context->operation)->toBe('main.operation');
    });

    it('creates exception with convenience factory methods', function () {
        // forOperation
        $exception1 = $this->factory->forOperation(
            InvalidArgumentException::class,
            'Invalid user data',
            'user.validate',
            'UserValidator',
            ['email' => 'invalid']
        );

        $context1 = $this->contextProvider->get($exception1);
        expect($context1->operation)->toBe('user.validate');
        expect($context1->component)->toBe('UserValidator');
        expect($context1->data['email'])->toBe('invalid');

        // withData
        $exception2 = $this->factory->withData(
            RuntimeException::class,
            'Database error',
            ['query' => 'SELECT * FROM users']
        );

        $context2 = $this->contextProvider->get($exception2);
        expect($context2->data['query'])->toBe('SELECT * FROM users');
    });

    it('serializes Value Objects to strings in toArray()', function () {
        $context = ExceptionContextData::forOperation('test.operation')
            ->withClientIp(\App\Framework\Http\IpAddress::from('192.168.1.1'))
            ->withUserAgent(\App\Framework\UserAgent\UserAgent::fromString('Mozilla/5.0'))
            ->withSessionId(\App\Framework\Http\Session\SessionId::fromString('session-12345678901234567890123456789012'))
            ->withRequestId('req-123');

        $array = $context->toArray();

        expect($array['client_ip'])->toBe('192.168.1.1');
        expect($array['user_agent'])->toBe('Mozilla/5.0');
        expect($array['session_id'])->toBe('session-12345678901234567890123456789012');
        expect($array['request_id'])->toBe('req-123');
    });

    it('serializes strings to strings in toArray() (backward compatibility)', function () {
        $context = ExceptionContextData::forOperation('test.operation')
            ->withClientIp('192.168.1.1')
            ->withUserAgent('Mozilla/5.0')
            ->withSessionId('session-123')
            ->withRequestId('req-123');

        $array = $context->toArray();

        expect($array['client_ip'])->toBe('192.168.1.1');
        expect($array['user_agent'])->toBe('Mozilla/5.0');
        expect($array['session_id'])->toBe('session-123');
        expect($array['request_id'])->toBe('req-123');
    });

    it('handles nested error scopes correctly', function () {
        // Outer scope
        $outerScope = ErrorScopeContext::http(
            request: createMockRequest(),
            operation: 'outer.operation'
        );
        $this->errorScope->enter($outerScope);

        // Inner scope
        $innerScope = ErrorScopeContext::generic(
            'inner',
            'inner.operation'
        );
        $this->errorScope->enter($innerScope);

        // Exception gets inner scope context
        $exception = $this->factory->create(
            RuntimeException::class,
            'Inner error'
        );

        $context = $this->contextProvider->get($exception);
        expect($context->operation)->toBe('inner.operation');

        // Exit inner scope
        $this->errorScope->exit();

        // New exception gets outer scope context
        $exception2 = $this->factory->create(
            RuntimeException::class,
            'Outer error'
        );

        $context2 = $this->contextProvider->get($exception2);
        expect($context2->operation)->toBe('outer.operation');
    });
});

// Helper function to create mock request
function createMockRequest(): \App\Framework\Http\HttpRequest
{
    return new \App\Framework\Http\HttpRequest(
        method: \App\Framework\Http\Method::GET,
        path: '/test',
        id: new \App\Framework\Http\RequestId('test-secret')
    );
}