<?php
// index.php - Enrutador central RESTful de MathKids Perú para cPanel

require_once __DIR__ . '/../src/helpers.php';
require_once __DIR__ . '/../src/Controllers/AuthController.php';
require_once __DIR__ . '/../src/Controllers/StudentController.php';
require_once __DIR__ . '/../src/Controllers/ParentController.php';
require_once __DIR__ . '/../src/Controllers/AdminController.php';

// Habilitar CORS
setupCors();

// Analizar la petición
$requestUri = $_SERVER['REQUEST_URI'] ?? '/';
$parsedUrl = parse_url($requestUri);
$path = $parsedUrl['path'] ?? '/';

// Normalizar ruta remota quitando la base '/api' si viene de redirección .htaccess
$basePath = '/api';
if (strpos($path, $basePath) === 0) {
    $path = substr($path, strlen($basePath));
}

// Asegurar que si la ruta queda vacía apunte a /
if (empty($path)) {
    $path = '/';
}

$method = $_SERVER['REQUEST_METHOD'];

try {
    // RUTA DE BIENVENIDA (Para verificar que la API responde)
    if ($path === '/' && $method === 'GET') {
        jsonResponse([
            'status' => 'online',
            'message' => 'API de MathKids Perú está lista y respondiendo.'
        ]);
    }

    // 1. RUTAS DE AUTENTICACIÓN
    elseif ($path === '/auth/login' && $method === 'POST') {
        AuthController::login();
    } 
    elseif ($path === '/auth/select-profile' && $method === 'POST') {
        AuthController::selectProfile();
    }
    
    // 2. RUTAS DEL ESTUDIANTE
    elseif ($path === '/student/dashboard' && $method === 'GET') {
        StudentController::getDashboard();
    } 
    elseif ($path === '/student/questions' && $method === 'GET') {
        StudentController::getQuestions();
    } 
    elseif (preg_match('#^/student/questions/(\d+)$#', $path, $matches) && $method === 'GET') {
        StudentController::getQuestionDetail($matches[1]);
    } 
    elseif (preg_match('#^/student/questions/(\d+)/attempt$#', $path, $matches) && $method === 'POST') {
        StudentController::attemptQuestion($matches[1]);
    } 
    elseif (preg_match('#^/student/questions/(\d+)/hint$#', $path, $matches) && $method === 'GET') {
        StudentController::getHint($matches[1]);
    } 
    elseif (preg_match('#^/student/questions/(\d+)/solution$#', $path, $matches) && $method === 'GET') {
        StudentController::getSolution($matches[1]);
    }
    
    // 3. RUTAS DEL PADRE
    elseif ($path === '/parent/children' && $method === 'GET') {
        ParentController::getChildren();
    } 
    elseif ($path === '/parent/children' && $method === 'POST') {
        ParentController::createChild();
    } 
    elseif (preg_match('#^/parent/children/(\d+)/progress$#', $path, $matches) && $method === 'GET') {
        ParentController::getChildProgress($matches[1]);
    } 
    elseif (preg_match('#^/parent/children/(\d+)/help-controls$#', $path, $matches) && $method === 'PUT') {
        ParentController::updateHelpControls($matches[1]);
    }
    
    // 4. RUTAS DE ADMINISTRACIÓN
    elseif ($path === '/admin/questions' && $method === 'GET') {
        AdminController::getQuestions();
    } 
    elseif ($path === '/admin/questions' && $method === 'POST') {
        AdminController::createQuestion();
    } 
    elseif (preg_match('#^/admin/questions/(\d+)$#', $path, $matches) && $method === 'PUT') {
        AdminController::updateQuestion($matches[1]);
    } 
    elseif ($path === '/admin/questions/ai-generate' && $method === 'POST') {
        AdminController::generateAiQuestion();
    }
    elseif ($path === '/admin/questions/import-pdf' && $method === 'POST') {
        AdminController::importPdf();
    }
    
    // 5. RUTA NO ENCONTRADA
    else {
        jsonResponse([
            'error' => 'No encontrado',
            'message' => "La ruta '$path' [$method] no existe."
        ], 404);
    }
} catch (Exception $e) {
    jsonResponse([
        'error' => 'Server Error',
        'message' => $e->getMessage()
    ], 500);
}