<?php

namespace App\Services;

use App\Models\User;

class AdminPageAccess
{
    public const DEPLOY_ADMIN_MOBILE_CORE = '9128081392';

    /** کلید برگ‌ها؛ با ADMIN_PAGE_TREE در ادمین یکی بماند. */
    public const LEAF_KEYS = [
        'dashboardMain',
        'customerMain_limitedOrder',
        'customerMain_archive',
        'customerMain_online',
        'customerMain_specialPrice',
        'customerMain_goldCredit',
        'productsMain_limitedOrder',
        'productsMain_archive',
        'productsMain_categories',
        'ordersMain',
        'transactionsMain',
        'accountsMain',
        'walletMain',
        'physicalWithdrawMain',
        'withdrawMain',
        'pricingMain',
        'priceTriggers',
        'conditionalOrders',
        'colleagueOrdersMain',
        'accountingMain',
        'supportMain',
        'websiteLandingSite',
        'websiteLandingHeader',
        'websiteLandingHero',
        'websiteLandingLivePrice',
        'websiteLandingCalculator',
        'websiteLandingFeature',
        'websiteLandingSteps',
        'websiteLandingTrust',
        'websiteLandingFaq',
        'websiteLandingBottomCta',
        'websiteLandingFooter',
        'configuration',
        'captureSitesMain',
        'advancedConfiguration',
        'smsPanelMain',
        'tradingHours',
        'banners',
        'appNotifications',
        'automations',
        'smsMain',
        'giftCardMain',
        'discounts',
        'usersMain',
    ];

    private const ALIASES = [
        'dashboard' => 'dashboardMain',
        'main' => 'dashboardMain',
        'orders' => 'ordersMain',
        'transactions' => 'transactionsMain',
        'support' => 'supportMain',
        'factor' => 'withdrawMain',
    ];

    public static function hasFullAccess(?User $user): bool
    {
        if (!$user) {
            return false;
        }
        if (self::isDeployAdmin($user)) {
            return true;
        }
        $access = $user->page_access;
        return $access === null;
    }

    public static function isDeployAdmin(?User $user): bool
    {
        if (!$user) {
            return false;
        }
        return self::normalizeMobile($user->mobile ?? '') === self::DEPLOY_ADMIN_MOBILE_CORE;
    }

    /**
     * null = دسترسی کامل. آرایه = فقط کلیدهای شناخته‌شده.
     */
    public static function normalize($value): ?array
    {
        if ($value === null || $value === '' || $value === false) {
            return null;
        }
        if (is_string($value)) {
            $decoded = json_decode($value, true);
            $value = is_array($decoded) ? $decoded : null;
            if ($value === null) {
                return null;
            }
        }
        if (!is_array($value)) {
            return null;
        }

        $out = [];
        foreach (self::LEAF_KEYS as $key) {
            $row = $value[$key] ?? null;
            if (!is_array($row)) {
                continue;
            }
            $view = self::toBool($row['view'] ?? false);
            $edit = self::toBool($row['edit'] ?? false);
            $delete = self::toBool($row['delete'] ?? false);
            if ($edit || $delete) {
                $view = true;
            }
            if (!$view) {
                $edit = false;
                $delete = false;
            }
            if (!$view && !$edit && !$delete) {
                continue;
            }
            $out[$key] = [
                'view' => $view,
                'edit' => $edit,
                'delete' => $delete,
            ];
        }

        return $out;
    }

    public static function hasAnyView(?array $access): bool
    {
        if ($access === null) {
            return true;
        }
        foreach ($access as $row) {
            if (!empty($row['view'])) {
                return true;
            }
        }
        return false;
    }

    public static function allows(?User $user, string $routeName, string $action): bool
    {
        if (self::hasFullAccess($user)) {
            return true;
        }
        $leaf = self::ALIASES[$routeName] ?? $routeName;
        if (!in_array($leaf, self::LEAF_KEYS, true)) {
            return false;
        }
        $access = $user->page_access;
        if (!is_array($access)) {
            return false;
        }
        $row = $access[$leaf] ?? null;
        if (!is_array($row)) {
            return false;
        }
        if ($action === 'delete') {
            return !empty($row['delete']);
        }
        if ($action === 'edit') {
            return !empty($row['edit']);
        }
        return !empty($row['view']);
    }

    public static function isReadPost(string $path): bool
    {
        $path = strtolower(trim($path, '/'));
        if (str_contains($path, '/table') || substr($path, -5) === 'table') {
            return true;
        }
        if (str_contains($path, 'preview')) {
            return true;
        }
        if (str_contains($path, 'get_customer_list') || str_contains($path, 'products-by-categories')) {
            return true;
        }
        if (str_contains($path, 'mande-by-codes')) {
            return true;
        }
        $exact = [
            'getbalance',
            'prices',
            'prices/chart',
            'gateway',
            'finance',
            'check_card',
            'dashboard',
            'dashboard/finance',
            'dashboard/customer/all_sell',
            'dashboard/customer/single/all_sell',
            'dashboard/customer/flow',
            'dashboard/customer/order-peak-hours',
            'dashboard/profit-conversions',
            'dashboard/montzar-reconcile',
        ];
        if (in_array($path, $exact, true)) {
            return true;
        }
        if (preg_match('#^customers/\d+/(referrals|funds|piggy-funds)$#', $path)) {
            return true;
        }
        if (preg_match('#^customers/\d+/assets/\d+/(piggy-funds|transactions)$#', $path)) {
            return true;
        }
        if (preg_match('#^customers/\d+/piggy-funds/\d+/transactions$#', $path)) {
            return true;
        }
        if (preg_match('#^customers/\d+/gold_credit/installments$#', $path)) {
            return true;
        }
        if (preg_match('#^chat/(focus|unfocus|ensure-webhook)$#', $path)) {
            return true;
        }
        return false;
    }

    private static function toBool($value): bool
    {
        if (is_bool($value)) {
            return $value;
        }
        if (is_numeric($value)) {
            return (int) $value === 1;
        }
        $text = strtolower(trim((string) $value));
        return in_array($text, ['1', 'true', 'yes', 'on'], true);
    }

    private static function normalizeMobile(?string $mobile): string
    {
        $digits = preg_replace('/\D+/', '', (string) $mobile) ?? '';
        if (str_starts_with($digits, '98') && strlen($digits) >= 12) {
            $digits = substr($digits, 2);
        }
        if (strlen($digits) === 11 && str_starts_with($digits, '0')) {
            $digits = substr($digits, 1);
        }
        return $digits;
    }
}