<?php

namespace App\Filament\Widgets;

use App\Enums\ShipmentStatus;
use App\Models\Shipment;
use App\Models\Wallet;
use App\Models\WalletTransaction;
use Filament\Widgets\StatsOverviewWidget;
use Filament\Widgets\StatsOverviewWidget\Stat;
use Illuminate\Support\Carbon;

/**
 * Layer 1 — Top KPI row on the IFNEX dashboard.
 *
 * Returns exactly 4 stat cards in a 4-column grid:
 *   1. سفارشات در انتظار تأیید   — amber (clock)
 *   2. درآمد امروز                — green (trending up)
 *   3. پرداخت‌های معوق            — red (banknotes)
 *   4. موجودی کیف پول‌ها          — blue (wallet)
 */
class FinanceOverviewWidget extends StatsOverviewWidget
{
    protected static ?string $pollingInterval = '30s';

    protected static ?int $sort = 1;

    protected static bool $isLazy = false;

    // ردیف هدر گرید ۱۲ ستونه است: 10/12 برای KPIها + 2/12 کارت ساعت (DashboardInfoWidget)
    protected int | string | array $columnSpan = 10;

    /**
     * Stat cards render in a 4-column responsive grid:
     *   - default (mobile): 1 col   (stacked)
     *   - sm:                2 cols
     *   - lg:                4 cols   (the canonical IFNEX layout)
     */
    protected int|string|array $columns = 4;

    protected function getStats(): array
    {
        $today = today();
        $yesterday = today()->subDay();

        // ─── KPI 1: سفارشات در انتظار تأیید ───
        $pendingApprovalCount = Shipment::where('status', ShipmentStatus::PendingApproval)->count();
        $approvedUnpaidCount = Shipment::where('status', ShipmentStatus::Approved)->count();
        $pendingOrdersTotal = $pendingApprovalCount + $approvedUnpaidCount;

        $pendingSparkline = [];
        for ($i = 6; $i >= 0; $i--) {
            $date = today()->subDays($i);
            $pendingSparkline[] = (int) Shipment::whereDate('created_at', $date)
                ->whereIn('status', [ShipmentStatus::PendingApproval, ShipmentStatus::Approved])
                ->count();
        }

        // ─── KPI 2: درآمد امروز ───
        $todayRevenue = (float) WalletTransaction::where('type', 'order_payment')
            ->where('status', 'completed')
            ->where('amount', '>', 0)
            ->whereDate('created_at', $today)
            ->sum('amount');

        $yesterdayRevenue = (float) WalletTransaction::where('type', 'order_payment')
            ->where('status', 'completed')
            ->where('amount', '>', 0)
            ->whereDate('created_at', $yesterday)
            ->sum('amount');

        [$revPercent, $revDirection, $revFormatted] = ifnex_trend_percent($todayRevenue, $yesterdayRevenue);

        $revenueSparkline = [];
        for ($i = 6; $i >= 0; $i--) {
            $date = today()->subDays($i);
            $revenueSparkline[] = (float) WalletTransaction::where('type', 'order_payment')
                ->where('status', 'completed')
                ->where('amount', '>', 0)
                ->whereDate('created_at', $date)
                ->sum('amount');
        }

        // ─── KPI 3: پرداخت‌های معوق ───
        $pendingAmount = (float) Shipment::where('status', ShipmentStatus::Approved)->sum('total_fee');
        $pendingShipmentsCount = Shipment::where('status', ShipmentStatus::Approved)->count();

        $yesterdayPendingAmount = (float) Shipment::where('status', ShipmentStatus::Approved)
            ->whereDate('updated_at', '<', $today)
            ->sum('total_fee');
        [$pendingPercent, $pendingDirection, $pendingFormatted] = ifnex_trend_percent(
            $pendingAmount,
            $yesterdayPendingAmount
        );

        // ─── KPI 4: موجودی کیف پول‌ها ───
        $totalWalletBalance = (float) Wallet::sum('balance');
        $activeWallets = Wallet::where('balance', '>', 0)->count();

        $walletSparkline = [];
        for ($i = 6; $i >= 0; $i--) {
            $date = today()->subDays($i);
            $walletSparkline[] = (float) WalletTransaction::where('status', 'completed')
                ->where('amount', '>', 0)
                ->whereDate('created_at', $date)
                ->sum('amount');
        }

        return [
            Stat::make('سفارشات در انتظار', ifnex_persian_digits(number_format($pendingOrdersTotal)))
                ->description(
                    $pendingOrdersTotal > 0
                        ? sprintf('%s در انتظار تأیید، %s آماده پرداخت',
                            ifnex_persian_digits(number_format($pendingApprovalCount)),
                            ifnex_persian_digits(number_format($approvedUnpaidCount)))
                        : 'سفارش جدیدی نیست'
                )
                ->descriptionIcon('heroicon-m-clock')
                ->icon('heroicon-o-clock')
                ->color('warning')
                ->chart($pendingSparkline)
                ->url(
                    $pendingOrdersTotal > 0
                        ? route('filament.admin.resources.shipments.index')
                        : null
                ),

            Stat::make('درآمد امروز', ifnex_format_number($todayRevenue))
                ->description(
                    $revDirection === 'up' ? sprintf('↑ %s نسبت به دیروز', $revFormatted) :
                    ($revDirection === 'down' ? sprintf('↓ %s نسبت به دیروز', $revFormatted) :
                    'بدون تغییر نسبت به دیروز')
                )
                ->descriptionIcon(
                    $revDirection === 'up' ? 'heroicon-m-arrow-trending-up' :
                    ($revDirection === 'down' ? 'heroicon-m-arrow-trending-down' : 'heroicon-m-minus')
                )
                ->icon('heroicon-o-arrow-trending-up')
                ->color(
                    $revDirection === 'up' ? 'success' :
                    ($revDirection === 'down' ? 'danger' : 'gray')
                )
                ->chart($revenueSparkline)
                ->url(route('filament.admin.resources.wallet-transactions.index')),

            Stat::make('پرداخت‌های معوق', ifnex_format_number($pendingAmount))
                ->description(
                    $pendingShipmentsCount > 0
                        ? sprintf('%s سفارش در انتظار پرداخت — %s',
                            ifnex_persian_digits(number_format($pendingShipmentsCount)),
                            $pendingDirection === 'up' ? sprintf('↑ %s', $pendingFormatted) :
                            ($pendingDirection === 'down' ? sprintf('↓ %s', $pendingFormatted) : 'بدون تغییر'))
                        : 'پرداخت معوقی نیست'
                )
                ->descriptionIcon(
                    $pendingDirection === 'up' ? 'heroicon-m-arrow-trending-up' :
                    ($pendingDirection === 'down' ? 'heroicon-m-arrow-trending-down' : 'heroicon-m-minus')
                )
                ->icon('heroicon-o-banknotes')
                ->color('danger')
                ->chart($pendingSparkline)
                ->url(
                    $pendingShipmentsCount > 0
                        ? route('filament.admin.resources.shipments.index')
                        : null
                ),

            Stat::make('موجودی کیف پول‌ها', ifnex_format_number($totalWalletBalance))
                ->description(
                    sprintf('%s کیف پول فعال', ifnex_persian_digits(number_format($activeWallets)))
                )
                ->descriptionIcon('heroicon-m-wallet')
                ->icon('heroicon-o-wallet')
                ->color('info')
                ->chart($walletSparkline)
                ->url(route('filament.admin.resources.wallets.index')),
        ];
    }
}