<?php
/**
 * Validation Script for Phase 1
 *
 * Validates that all Phase 1 tasks have been completed successfully.
 *
 * @package ROITheme
 */

declare(strict_types=1);

class Phase1Validator
{
    private int $totalChecks = 0;
    private int $passedChecks = 0;
    private array $errors = [];

    public function run(): void
    {
        echo "\n";
        echo "========================================\n";
        echo "  VALIDACIÓN DE FASE 1 - ROI THEME     \n";
        echo "========================================\n\n";

        $this->checkFolderStructure();
        $this->checkComposerAutoloader();
        $this->checkDIContainer();
        $this->checkInterfaces();
        $this->checkBootstrap();
        $this->checkTests();

        $this->printResults();
    }

    private function check(string $description, callable $test): void
    {
        $this->totalChecks++;

        try {
            $result = $test();

            if ($result) {
                echo "✓ {$description}\n";
                $this->passedChecks++;
            } else {
                echo "✗ {$description}\n";
                $this->errors[] = $description;
            }
        } catch (Exception $e) {
            echo "✗ {$description} (Error: {$e->getMessage()})\n";
            $this->errors[] = $description . ': ' . $e->getMessage();
        }
    }

    private function checkFolderStructure(): void
    {
        echo "Validando estructura de carpetas...\n";

        $requiredDirs = [
            'src/Domain/Component',
            'src/Domain/Component/ValueObjects',
            'src/Domain/Component/Exceptions',
            'src/Domain/Shared/ValueObjects',
            'src/Application/UseCases/SaveComponent',
            'src/Application/UseCases/GetComponent',
            'src/Application/UseCases/DeleteComponent',
            'src/Application/UseCases/SyncSchema',
            'src/Application/DTO',
            'src/Application/Contracts',
            'src/Infrastructure/Persistence/WordPress/Repositories',
            'src/Infrastructure/API/WordPress',
            'src/Infrastructure/Services',
            'src/Infrastructure/DI',
            'src/Infrastructure/Facades',
            'src/Infrastructure/Presentation/Public/Renderers',
            'src/Infrastructure/Presentation/Admin/FormBuilders',
            'src/Infrastructure/UI/Assets',
            'src/Infrastructure/UI/Views',
            'tests/Unit/Domain/Component',
            'tests/Unit/Application/UseCases',
            'tests/Unit/Infrastructure/Persistence',
            'tests/Unit/Infrastructure/Services',
            'tests/Integration',
            'tests/E2E',
            'schemas',
            'templates/admin',
            'templates/public',
        ];

        foreach ($requiredDirs as $dir) {
            $this->check(
                "Carpeta {$dir} existe",
                fn() => is_dir(__DIR__ . '/../' . $dir)
            );
        }

        echo "\n";
    }

    private function checkComposerAutoloader(): void
    {
        echo "Validando Composer y autoloader...\n";

        $this->check(
            'composer.json existe',
            fn() => file_exists(__DIR__ . '/../composer.json')
        );

        $this->check(
            'vendor/autoload.php existe',
            fn() => file_exists(__DIR__ . '/../vendor/autoload.php')
        );

        $this->check(
            'PSR-4 autoloading configurado',
            function () {
                $composer = json_decode(file_get_contents(__DIR__ . '/../composer.json'), true);
                return isset($composer['autoload']['psr-4']['ROITheme\\']);
            }
        );

        echo "\n";
    }

    private function checkDIContainer(): void
    {
        echo "Validando DI Container...\n";

        require_once __DIR__ . '/../vendor/autoload.php';

        $this->check(
            'DIContainer class existe',
            fn() => class_exists('ROITheme\Infrastructure\DI\DIContainer')
        );

        $this->check(
            'DIContainer es singleton',
            function () {
                $instance1 = \ROITheme\Infrastructure\DI\DIContainer::getInstance();
                $instance2 = \ROITheme\Infrastructure\DI\DIContainer::getInstance();
                return $instance1 === $instance2;
            }
        );

        $this->check(
            'DIContainer tiene método set()',
            fn() => method_exists('ROITheme\Infrastructure\DI\DIContainer', 'set')
        );

        $this->check(
            'DIContainer tiene método get()',
            fn() => method_exists('ROITheme\Infrastructure\DI\DIContainer', 'get')
        );

        $this->check(
            'DIContainer tiene método has()',
            fn() => method_exists('ROITheme\Infrastructure\DI\DIContainer', 'has')
        );

        $this->check(
            'DIContainer tiene métodos de servicio',
            function () {
                return method_exists('ROITheme\Infrastructure\DI\DIContainer', 'getComponentRepository')
                    && method_exists('ROITheme\Infrastructure\DI\DIContainer', 'getValidationService')
                    && method_exists('ROITheme\Infrastructure\DI\DIContainer', 'getCacheService');
            }
        );

        echo "\n";
    }

    private function checkInterfaces(): void
    {
        echo "Validando interfaces...\n";

        $this->check(
            'ComponentRepositoryInterface existe',
            fn() => interface_exists('ROITheme\Domain\Component\ComponentRepositoryInterface')
        );

        $this->check(
            'ValidationServiceInterface existe',
            fn() => interface_exists('ROITheme\Application\Contracts\ValidationServiceInterface')
        );

        $this->check(
            'CacheServiceInterface existe',
            fn() => interface_exists('ROITheme\Application\Contracts\CacheServiceInterface')
        );

        $this->check(
            'Component entity existe',
            fn() => class_exists('ROITheme\Domain\Component\Component')
        );

        echo "\n";
    }

    private function checkBootstrap(): void
    {
        echo "Validando bootstrap en functions.php...\n";

        $functionsContent = file_get_contents(__DIR__ . '/../functions.php');

        $this->check(
            'functions.php existe',
            fn() => file_exists(__DIR__ . '/../functions.php')
        );

        $this->check(
            'functions.php carga Composer autoloader',
            fn() => strpos($functionsContent, "require_once __DIR__ . '/vendor/autoload.php'") !== false
        );

        $this->check(
            'functions.php importa DIContainer',
            fn() => strpos($functionsContent, 'use ROITheme\Infrastructure\DI\DIContainer') !== false
        );

        $this->check(
            'functions.php define roi_container()',
            fn() => strpos($functionsContent, 'function roi_container()') !== false
        );

        echo "\n";
    }

    private function checkTests(): void
    {
        echo "Validando tests unitarios...\n";

        $this->check(
            'phpunit.xml configurado',
            fn() => file_exists(__DIR__ . '/../phpunit.xml')
        );

        $this->check(
            'DIContainerTest existe',
            fn() => file_exists(__DIR__ . '/../tests/Unit/Infrastructure/DI/DIContainerTest.php')
        );

        // Run PHPUnit tests
        $baseDir = dirname(__DIR__);
        $phpunitPath = $baseDir . DIRECTORY_SEPARATOR . 'vendor' . DIRECTORY_SEPARATOR . 'bin' . DIRECTORY_SEPARATOR . 'phpunit';

        // For Windows compatibility
        if (PHP_OS_FAMILY === 'Windows') {
            $command = "cd /d \"$baseDir\" && \"$phpunitPath\" --testsuite Unit 2>&1";
        } else {
            $command = "cd \"$baseDir\" && \"$phpunitPath\" --testsuite Unit 2>&1";
        }

        exec($command, $output, $returnCode);

        $this->check(
            'Tests unitarios pasan',
            fn() => $returnCode === 0
        );

        echo "\n";
    }

    private function printResults(): void
    {
        echo "========================================\n";
        echo "  RESULTADOS DE VALIDACIÓN\n";
        echo "========================================\n\n";

        $percentage = $this->totalChecks > 0
            ? round(($this->passedChecks / $this->totalChecks) * 100, 2)
            : 0;

        echo "Checks pasados: {$this->passedChecks}/{$this->totalChecks} ({$percentage}%)\n\n";

        if (count($this->errors) > 0) {
            echo "ERRORES ENCONTRADOS:\n";
            foreach ($this->errors as $error) {
                echo "  - {$error}\n";
            }
            echo "\n";
            exit(1);
        } else {
            echo "✓ ¡FASE 1 COMPLETADA EXITOSAMENTE!\n\n";
            echo "Todas las validaciones pasaron correctamente.\n";
            echo "La arquitectura base está lista para la Fase 2.\n\n";
            exit(0);
        }
    }
}

// Run validation
$validator = new Phase1Validator();
$validator->run();