<?php
require_once __DIR__ . '/../vendor/autoload.php';
require_once __DIR__ . '/../db.php';

use App\Controllers\AuthController;
use App\Controllers\ProjectController;
use App\Controllers\TaskController;

// Simple routing
$requestUri = parse_url($_SERVER['REQUEST_URI'], PHP_URL_PATH);
$method = $_SERVER['REQUEST_METHOD'];

// Serve HTML files for non-API routes
if (!str_starts_with($requestUri, '/api/')) {
    switch ($requestUri) {
        case '/':
        case '/index.html':
            readfile(__DIR__ . '/index.html');
            exit;
        case '/dashboard.html':
            readfile(__DIR__ . '/dashboard.html');
            exit;
        case '/project.html':
            readfile(__DIR__ . '/project.html');
            exit;
        default:
            // Try to serve static file if it exists
            $filePath = __DIR__ . $requestUri;
            if (file_exists($filePath) && is_file($filePath)) {
                $extension = pathinfo($filePath, PATHINFO_EXTENSION);
                $mimeTypes = [
                    'css' => 'text/css',
                    'js' => 'application/javascript',
                    'json' => 'application/json',
                    'png' => 'image/png',
                    'jpg' => 'image/jpeg',
                    'jpeg' => 'image/jpeg',
                    'gif' => 'image/gif',
                    'svg' => 'image/svg+xml',
                ];
                if (isset($mimeTypes[$extension])) {
                    header('Content-Type: ' . $mimeTypes[$extension]);
                }
                readfile($filePath);
                exit;
            }
    }
}

// Headers for JSON responses
header('Content-Type: application/json');

try {
    switch (true) {
        case $requestUri === '/api/register' && $method === 'POST':
            $data = json_decode(file_get_contents('php://input'), true);
            $authController = new AuthController();
            echo json_encode($authController->register(
                $data['name'], 
                $data['email'], 
                $data['password']
            ));
            break;

        case $requestUri === '/api/login' && $method === 'POST':
            $data = json_decode(file_get_contents('php://input'), true);
            $authController = new AuthController();
            echo json_encode($authController->login(
                $data['email'], 
                $data['password']
            ));
            break;

        case $requestUri === '/api/logout' && $method === 'POST':
            $authController = new AuthController();
            echo json_encode($authController->logout());
            break;

        case $requestUri === '/api/projects' && $method === 'GET':
            if (!AuthController::isAuthenticated()) {
                http_response_code(401);
                echo json_encode(['error' => 'Unauthorized']);
                break;
            }
            $projectController = new ProjectController();
            echo json_encode($projectController->getUserProjects());
            break;

        case $requestUri === '/api/projects' && $method === 'POST':
            if (!AuthController::isAuthenticated()) {
                http_response_code(401);
                echo json_encode(['error' => 'Unauthorized']);
                break;
            }
            $data = json_decode(file_get_contents('php://input'), true);
            $projectController = new ProjectController();
            echo json_encode($projectController->createProject(
                $data['name'], 
                $data['description']
            ));
            break;

        case preg_match('/^\/api\/projects\/(\d+)$/', $requestUri, $matches) && $method === 'GET':
            if (!AuthController::isAuthenticated()) {
                http_response_code(401);
                echo json_encode(['error' => 'Unauthorized']);
                break;
            }
            $projectController = new ProjectController();
            echo json_encode($projectController->getProjectDetails($matches[1]));
            break;

        case $requestUri === '/api/tasks' && $method === 'POST':
            if (!AuthController::isAuthenticated()) {
                http_response_code(401);
                echo json_encode(['error' => 'Unauthorized']);
                break;
            }
            $data = json_decode(file_get_contents('php://input'), true);
            $taskController = new TaskController();
            echo json_encode($taskController->createTask(
                $data['name'], 
                $data['description'], 
                $data['project_id'], 
                $data['status'] ?? 'created'
            ));
            break;

        case preg_match('/^\/api\/tasks\/(\d+)\/status$/', $requestUri, $matches) && $method === 'PUT':
            if (!AuthController::isAuthenticated()) {
                http_response_code(401);
                echo json_encode(['error' => 'Unauthorized']);
                break;
            }
            $data = json_decode(file_get_contents('php://input'), true);
            $taskController = new TaskController();
            echo json_encode($taskController->updateTaskStatus(
                $matches[1], 
                $data['status']
            ));
            break;

        case preg_match('/^\/api\/tasks\/(\d+)$/', $requestUri, $matches) && $method === 'GET':
            if (!AuthController::isAuthenticated()) {
                http_response_code(401);
                echo json_encode(['error' => 'Unauthorized']);
                break;
            }
            $taskController = new TaskController();
            echo json_encode($taskController->getTask($matches[1]));
            break;

        case preg_match('/^\/api\/tasks\/(\d+)$/', $requestUri, $matches) && $method === 'PUT':
            if (!AuthController::isAuthenticated()) {
                http_response_code(401);
                echo json_encode(['error' => 'Unauthorized']);
                break;
            }
            $data = json_decode(file_get_contents('php://input'), true);
            $taskController = new TaskController();
            echo json_encode($taskController->updateTask(
                $matches[1],
                $data['name'],
                $data['description']
            ));
            break;

        default:
            http_response_code(404);
            echo json_encode(['error' => 'Not Found']);
            break;
    }
} catch (Exception $e) {
    http_response_code(500);
    echo json_encode(['error' => $e->getMessage()]);
}