<?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',
        'customerMain_digipayInstallment',
        'productsMain_limitedOrder',
        'productsMain_archive',
        'productsMain_categories',
        'ordersMain',
        'copperConvertMain',
        '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',
    ];

    /** کلید عملیات ستون هر صفحه؛ با PAGE_TABLE_ACTIONS ادمین یکی بماند. */
    public const ACTIONS = [
        'customerMain_limitedOrder' => ['charge', 'tahesab', 'zarin', 'pargar', 'accountingCode', 'info', 'edit', 'referral', 'sms', 'approve', 'archive', 'active', 'trade'],
        'customerMain_archive' => ['restore', 'info'],
        'customerMain_specialPrice' => ['edit', 'toggle', 'delete'],
        'customerMain_goldCredit' => ['detail', 'edit', 'approve', 'reject'],
        'customerMain_digipayInstallment' => ['edit'],
        'productsMain_limitedOrder' => ['buy', 'sell', 'list', 'tv', 'edit', 'archive'],
        'productsMain_archive' => ['restore', 'info'],
        'ordersMain' => ['info'],
        'transactionsMain' => ['info'],
        'accountsMain' => ['toggle', 'delete'],
        'walletMain' => ['info'],
        'physicalWithdrawMain' => ['amount', 'approve', 'status', 'factor'],
        'withdrawMain' => ['confirm', 'factor', 'status', 'weight', 'tahesab', 'zarin'],
        'pricingMain' => ['details'],
        'priceTriggers' => ['edit', 'toggle', 'delete'],
        'conditionalOrders' => ['edit', 'toggle', 'delete'],
        'accountingMain' => ['doc', 'register', 'send'],
        'appNotifications' => ['recipients', 'readers', 'edit', 'toggle', 'delete'],
        'automations' => ['preview', 'log', 'edit', 'toggle', 'delete'],
        'giftCardMain' => ['info', 'codes', 'edit', 'delete'],
        'discounts' => ['edit'],
        'usersMain' => ['info', 'edit', 'delete'],
    ];

    private const ALIASES = [
        'dashboard' => 'dashboardMain',
        'main' => 'dashboardMain',
        'orders' => 'ordersMain',
        'copperConvert' => 'copperConvertMain',
        '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);
            $actions = null;
            if (is_array($row['actions'] ?? null)) {
                $actions = [];
                foreach (self::ACTIONS[$key] ?? [] as $actionKey) {
                    $actions[$actionKey] = self::toBool($row['actions'][$actionKey] ?? false);
                }
                if (array_key_exists('edit', $actions)) {
                    $edit = $actions['edit'];
                }
                if (array_key_exists('delete', $actions)) {
                    $delete = $actions['delete'];
                }
            }
            if ($edit || $delete || ($actions && in_array(true, $actions, true))) {
                $view = true;
            }
            if (!$view) {
                $edit = false;
                $delete = false;
                if (is_array($actions)) {
                    foreach ($actions as $actionKey => $enabled) {
                        $actions[$actionKey] = false;
                    }
                }
            }
            if (!$view && !$edit && !$delete && !($actions && in_array(true, $actions, true))) {
                continue;
            }
            $stored = [
                'view' => $view,
                'edit' => $edit,
                'delete' => $delete,
            ];
            if (is_array($actions) && $actions) {
                $stored['actions'] = $actions;
            }
            $out[$key] = $stored;
        }

        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' || $action === 'edit') {
            $actions = $row['actions'] ?? null;
            if (is_array($actions) && array_key_exists($action, $actions)) {
                return !empty($actions[$action]);
            }
            return !empty($row[$action]);
        }
        return !empty($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;
    }
}