<?php
// error_reporting(E_ALL | E_STRICT);
// ini_set('display_errors', 1);
require_once($_SERVER['DOCUMENT_ROOT']."/ajax/vue_php_function.php");
require_once($_SERVER['DOCUMENT_ROOT']."/api/complex/Controllers/MediaController.php");

function handleCors() {
    header("Access-Control-Allow-Origin: *");
    header("Access-Control-Allow-Methods: GET, POST, PUT, DELETE, OPTIONS");
    header("Access-Control-Allow-Headers: Content-Type, Authorization");
    header('Content-Type: application/json');


    if ($_SERVER['REQUEST_METHOD'] === 'OPTIONS') {
        http_response_code(200);
        exit();
    }
}

handleCors();

$authUser = null;
$method = $_SERVER['REQUEST_METHOD'];
$uri = $_SERVER['REQUEST_URI'];

$uri = str_replace('/api/complex', '', $uri);
$uri = strtok($uri, '?');

$segments = explode('/', trim($uri, '/'));

$controller = new MediaController();

$routes = [
    'home/{homeId}/media/completion' => [
        'GET' => ['action' => 'getHouseMediaCompletionPercentage', 'middleware' => ['auth', 'can:view|modify']],
    ],
    'home/{homeId}/media/thumbnails'    => [
        'GET' => ['action' => 'getMediaThumbnails', 'middleware' => ['auth', 'can:view|modify']],
    ],
    'home/{homeId}/media/{media_id}' => [
        'DELETE' => ['action' => 'delete', 'middleware' => ['auth', 'can:modify']],
    ],
    'home/{homeId}/media' => [
        'GET' => ['action' => 'index', 'middleware' => ['auth', 'can:view|modify']],
        'POST' => ['action' => 'store', 'middleware' => ['auth', 'can:modify']],
    ],
    'home/{homeId}/media-sets/{set_id}/rooms' => [
        'POST'  => ['action' => 'connectSetToRooms', 'middleware' => ['auth', 'can:modify']],
    ],
    'home/{homeId}/media-sets/{set_id}' => [
        'DELETE'  => ['action' => 'deleteMediaSet', 'middleware' => ['auth', 'can:modify']],
        'PUT'     => ['action' => 'updateMediaSet', 'middleware' => ['auth', 'can:modify']],
    ],
    'home/{homeId}/media-sets' => [
        'POST'  => ['action' => 'createMediaSet', 'middleware' => ['auth', 'can:modify']],
        'GET'   => ['action' => 'getMediaSets', 'middleware' => ['auth', 'can:view|modify']],
    ],
    'home/{homeId}/room/{roomId}/media' => [
        'GET'   => ['action' => 'getMediaSetForRoom', 'middleware' => ['auth', 'can:view|modify']],
    ],
];

$segmentCount = count($segments);
$queryParams = [];
if (!empty($_SERVER['QUERY_STRING'])) {
    parse_str($_SERVER['QUERY_STRING'], $queryParams);
}


foreach ($routes as $pattern => $methods) {
    $patternSegments = explode('/', $pattern);

    // Quick segment count check
    if ($segmentCount !== count($patternSegments)) continue;

    $params = [];
    $match = true;
    foreach ($patternSegments as $i => $patSegment) {
        if (substr($patSegment, 0, 1) === '{' && substr($patSegment, -1) === '}') {
            $paramName = trim($patSegment, '{}');
            $params[$paramName] = $segments[$i];
        } elseif ($patSegment !== $segments[$i]) {
            $match = false;
            break;
        }
    }

    if ($match && isset($methods[$method])) {
        $routeConfig = $methods[$method];
        $action = null;

        if (is_string($routeConfig)) {
            $action = $routeConfig;
            $middlewares = [];
        } else {
            $action = $routeConfig['action'];
            $middlewares = isset($routeConfig['middleware']) ? $routeConfig['middleware'] : [];
        }

        foreach ($middlewares as $mw) {
            switch ($mw) {
                case 'auth':
                    authenticate($params);
                    break;
                case 'can:view|modify':
                    if (!canModifyResource($authUser) && !canViewResource($authUser)) {
                        unauthorized('Неправильные доступы.');
                    }
                    break;
                case 'can:modify':
                    if ($_SESSION['pay']) {
                        unauthorized('Вы не сможете отредактировать медиаматериалы, так как у вас не оплачен тариф.');
                    }

                    if (!canModifyResource($authUser)) {
                        unauthorized('Неправильные доступы отредактирования.');
                    }

                    break;
            }
        }

        $body = null;
        if ($method === 'POST' || $method === 'PUT') {
            // For form-urlencoded or multipart/form-data
            $body = [
                'fields' => $_POST
            ];

            // If you expect JSON payload
            $input = file_get_contents('php://input');
            if ($input) {
                $decoded = json_decode($input, true);
                if ($decoded) {
                    $body = [
                        'fields' => $decoded
                    ];
                }
            }

            if (count($_FILES)) {
                $body['files'] = $_FILES;
            }
        }

        // Call the controller dynamically
        if (strpos($action, 'delete') !== false) {
            $entityId = isset($segments[3]) ? (int)$segments[3] : null;
            $controller->$action((int)$params['homeId'], $entityId);
        } elseif ($method === 'POST' || $method === 'PUT') {
            $controller->$action($params, $body);
        } else {
            $controller->$action($params, $queryParams);
        }
    }
}

function authenticate($params)
{
    global $controller, $authUser;

    $sessionId = null;
    $session = $_SESSION;

    if (!isset($session['id']) || !$session['id']) {
        unauthorized('Требуется авторизация.');
    }

    $sessionId = $session['id'];

    $authUser = $controller->findUser($sessionId);

    if (!validateSession($sessionId, $authUser, $params)) {
        unauthorized('Invalid session');
    }
}

function unauthorized($message = 'Unauthorized')
{
    http_response_code(401);
    echo json_encode(['error' => $message]);
    exit;
}

function validateSession($sessionId, $authUser, $params)
{
    global $controller;

    if (!isset($authUser['id']))
        return false;

    $houseComplexAgencyId = $controller->findHouseComplexAgency($params['homeId']);
    
    return $authUser && ($authUser['id'] == $sessionId) && $houseComplexAgencyId === $_SESSION['agency_id'];
}

function canModifyResource($authUser)
{
    if (!isset($_SESSION['ahatnc']))
        return false;
    
    $agenciesHaveAccessToNewComplexes = unserialize(base64_decode($_SESSION['ahatnc']));

    $userModel = new User;
    $hasMenuPermission = $userModel->checkMenuPermissions("menu_complexes");
    $authUserHasPermission = ($authUser['agency'] || $authUser['users_admin'] || $hasMenuPermission);
    $agencyHasPermission = in_array($_SESSION['agency_id'] , $agenciesHaveAccessToNewComplexes);

    if ($hasMenuPermission || ($authUserHasPermission && $agencyHasPermission)) {
        return true;
    }

    return false;
}

function canViewResource($authUser)
{
    return $authUser['role_developer'];
}