<?php

declare(strict_types=1);

namespace Tests\Framework\Context;

use App\Framework\Context\ContextType;
use App\Framework\Context\ExecutionContext;
use App\Framework\Discovery\Cache\DiscoveryCacheIdentifiers;

describe('ExecutionContext Cache Key Generation', function () {
    beforeEach(function () {
        // Clear any environment variables that might affect detection
        unset($_ENV['APP_ENV']);
        unset($_SERVER['REQUEST_METHOD']);
        unset($_SERVER['HTTP_HOST']);
        unset($_SERVER['SERVER_NAME']);
    });

    it('generates different cache keys for different execution contexts', function () {
        $paths = ['/test/src'];

        // Create different execution contexts
        $consoleContext = ExecutionContext::forConsole();
        $webContext = ExecutionContext::forWeb();
        $workerContext = ExecutionContext::forWorker();
        $testContext = ExecutionContext::forTest();

        // Generate cache keys for each context
        $consoleKey = DiscoveryCacheIdentifiers::fullDiscoveryKey($paths, $consoleContext->getType()->value);
        $webKey = DiscoveryCacheIdentifiers::fullDiscoveryKey($paths, $webContext->getType()->value);
        $workerKey = DiscoveryCacheIdentifiers::fullDiscoveryKey($paths, $workerContext->getType()->value);
        $testKey = DiscoveryCacheIdentifiers::fullDiscoveryKey($paths, $testContext->getType()->value);

        // All keys should be different
        $keys = [$consoleKey, $webKey, $workerKey, $testKey];
        $uniqueKeys = array_unique(array_map(fn ($key) => $key->toString(), $keys));

        expect(count($uniqueKeys))->toBe(4);
    });

    it('console and cli-script contexts have separate cache keys', function () {
        $paths = ['/test/src'];

        $consoleKey = DiscoveryCacheIdentifiers::fullDiscoveryKey($paths, 'console');
        $cliScriptKey = DiscoveryCacheIdentifiers::fullDiscoveryKey($paths, 'cli-script');

        expect($consoleKey->toString())->not->toBe($cliScriptKey->toString());

        // Both should contain their respective context type
        expect($consoleKey->toString())->toContain('console');
        expect($cliScriptKey->toString())->toContain('cli-script');
    });

    it('cache keys are consistent for the same context', function () {
        $paths = ['/test/src'];
        $context = 'console';

        $key1 = DiscoveryCacheIdentifiers::fullDiscoveryKey($paths, $context);
        $key2 = DiscoveryCacheIdentifiers::fullDiscoveryKey($paths, $context);

        expect($key1->toString())->toBe($key2->toString());
    });

    it('cache keys change with different paths', function () {
        $paths1 = ['/test/src'];
        $paths2 = ['/test/src', '/test/additional'];
        $context = 'console';

        $key1 = DiscoveryCacheIdentifiers::fullDiscoveryKey($paths1, $context);
        $key2 = DiscoveryCacheIdentifiers::fullDiscoveryKey($paths2, $context);

        expect($key1->toString())->not->toBe($key2->toString());
    });

    it('validates cache key format is safe for storage', function () {
        $paths = ['/test/src'];
        $contexts = ['console', 'cli-script', 'web', 'worker', 'test'];

        foreach ($contexts as $context) {
            $key = DiscoveryCacheIdentifiers::fullDiscoveryKey($paths, $context);

            // Cache key should only contain safe characters
            expect($key->toString())->toMatch('/^[a-zA-Z0-9_\-:\.]+$/');

            // Should not be empty
            expect($key->toString())->not->toBeEmpty();

            // Should have reasonable length (not too short or too long)
            expect(strlen($key->toString()))->toBeGreaterThan(10);
            expect(strlen($key->toString()))->toBeLessThan(200);
        }
    });
});

describe('ExecutionContext Detection and Metadata', function () {
    it('can detect different execution contexts', function () {
        // Test forced contexts
        $consoleContext = ExecutionContext::forConsole();
        expect($consoleContext->isConsole())->toBeTrue();
        expect($consoleContext->isCli())->toBeTrue();
        expect($consoleContext->isWeb())->toBeFalse();

        $webContext = ExecutionContext::forWeb();
        expect($webContext->isWeb())->toBeTrue();
        expect($webContext->isCli())->toBeFalse();
        expect($webContext->isConsole())->toBeFalse();

        $workerContext = ExecutionContext::forWorker();
        expect($workerContext->isWorker())->toBeTrue();
        expect($workerContext->isCli())->toBeTrue();
        expect($workerContext->isWeb())->toBeFalse();

        $testContext = ExecutionContext::forTest();
        expect($testContext->isTest())->toBeTrue();
        expect($testContext->isCli())->toBeFalse(); // Test context is separate from CLI
    });

    it('provides consistent metadata for cache key generation', function () {
        $context = ExecutionContext::forConsole();

        $metadata1 = $context->getMetadata();
        $metadata2 = $context->getMetadata();

        // Metadata should be consistent
        expect($metadata1['type'])->toBe($metadata2['type']);
        expect($metadata1['sapi'])->toBe($metadata2['sapi']);

        // Type should match context
        expect($metadata1['type'])->toBe('console');
    });

    it('includes execution context type in metadata', function () {
        $contexts = [
            ExecutionContext::forConsole(),
            ExecutionContext::forWeb(),
            ExecutionContext::forWorker(),
            ExecutionContext::forTest(),
        ];

        foreach ($contexts as $context) {
            $metadata = $context->getMetadata();

            expect($metadata)->toHaveKey('type');
            expect($metadata['type'])->toBe($context->getType()->value);
            expect($metadata)->toHaveKey('sapi');
            expect($metadata)->toHaveKey('pid');
        }
    });
});

describe('ExecutionContext ContextType Enum', function () {
    it('has all required context types', function () {
        $types = [
            ContextType::CONSOLE,
            ContextType::WEB,
            ContextType::WORKER,
            ContextType::TEST,
            ContextType::CLI_SCRIPT,
        ];

        foreach ($types as $type) {
            expect($type)->toBeInstanceOf(ContextType::class);
            expect($type->value)->toBeString();
            expect($type->value)->not->toBeEmpty();
        }
    });

    it('context type values are suitable for cache keys', function () {
        $types = [
            ContextType::CONSOLE,
            ContextType::WEB,
            ContextType::WORKER,
            ContextType::TEST,
            ContextType::CLI_SCRIPT,
        ];

        foreach ($types as $type) {
            // Values should be valid for cache keys (no spaces, special chars)
            expect($type->value)->toMatch('/^[a-z\-]+$/');
            expect($type->value)->not->toContain(' ');
            expect($type->value)->not->toContain('/');
            expect($type->value)->not->toContain('\\');
        }
    });

    it('console and cli-script are different types', function () {
        expect(ContextType::CONSOLE->value)->not->toBe(ContextType::CLI_SCRIPT->value);
        expect(ContextType::CONSOLE->value)->toBe('console');
        expect(ContextType::CLI_SCRIPT->value)->toBe('cli-script');
    });
});

describe('Cache Key Collision Prevention', function () {
    it('prevents cache collisions between console.php and other CLI scripts', function () {
        $paths = ['/test/src'];

        // Before the fix, console.php was detected as CLI_SCRIPT
        // Now it should be handled separately as CONSOLE context
        $consoleKey = DiscoveryCacheIdentifiers::fullDiscoveryKey($paths, ContextType::CONSOLE->value);
        $cliScriptKey = DiscoveryCacheIdentifiers::fullDiscoveryKey($paths, ContextType::CLI_SCRIPT->value);

        expect($consoleKey->toString())->not->toBe($cliScriptKey->toString());

        // Verify the fix: different contexts should have distinct cache keys
        $keyDifferences = array_diff_assoc(
            str_split($consoleKey->toString()),
            str_split($cliScriptKey->toString())
        );

        // There should be differences between the keys
        expect(count($keyDifferences))->toBeGreaterThan(0);
    });

    it('ensures discovery cache separation between execution contexts', function () {
        $paths = ['/test/src'];

        // All different contexts should produce different cache keys
        $contexts = ['console', 'cli-script', 'web', 'worker', 'test'];
        $keys = [];

        foreach ($contexts as $context) {
            $key = DiscoveryCacheIdentifiers::fullDiscoveryKey($paths, $context);
            $keys[$context] = $key->toString();
        }

        // All keys should be unique
        $uniqueKeys = array_unique($keys);
        expect(count($uniqueKeys))->toBe(count($contexts));

        // Each key should be identifiable by its context
        foreach ($contexts as $context) {
            expect($keys[$context])->toContain($context);
        }
    });
});