<?php

namespace App\Filament\Widgets;

use App\Models\WalletTransaction;
use Filament\Widgets\ChartWidget;
use Illuminate\Support\Facades\DB;
use Morilog\Jalali\Jalalian;

/**
 * Layer 2 (left) — 7-day revenue trend chart, spanning 8/12 of the body grid.
 */
class TransactionChartWidget extends ChartWidget
{
    protected static ?int $sort = 8;

    protected static ?string $pollingInterval = '60s';

    protected static ?string $heading = 'روند تراکنش‌های ۷ روز اخیر';

    protected static ?string $maxHeight = '320px';

    protected int|string|array $columnSpan = 12;

    protected function getData(): array
    {
        $data = WalletTransaction::select(
                DB::raw('DATE(created_at) as date'),
                DB::raw('SUM(CASE WHEN type = "deposit" AND status = "completed" THEN amount ELSE 0 END) as deposits'),
                DB::raw('SUM(CASE WHEN type IN ("withdrawal", "order_payment") AND status = "completed" THEN amount ELSE 0 END) as withdrawals')
            )
            ->where('created_at', '>=', now()->subDays(7))
            ->groupBy('date')
            ->orderBy('date')
            ->get();

        $labels = $data->pluck('date')->map(function ($date) {
            return Jalalian::fromCarbon(\Carbon\Carbon::parse($date))->format('l d');
        })->toArray();
        $deposits = $data->pluck('deposits')->map(fn ($v) => (float) $v)->toArray();
        $withdrawals = $data->pluck('withdrawals')->map(fn ($v) => (float) $v)->toArray();

        return [
            'datasets' => [
                [
                    'label' => 'واریزی‌ها',
                    'data' => $deposits,
                    'borderColor' => '#10b981',
                    'backgroundColor' => 'rgba(16, 185, 129, 0.15)',
                    'fill' => true,
                    'tension' => 0.4,
                    'pointRadius' => 3,
                    'pointHoverRadius' => 5,
                    'pointBackgroundColor' => '#10b981',
                ],
                [
                    'label' => 'برداشت‌ها',
                    'data' => $withdrawals,
                    'borderColor' => '#f59e0b',
                    'backgroundColor' => 'rgba(245, 158, 11, 0.15)',
                    'fill' => true,
                    'tension' => 0.4,
                    'pointRadius' => 3,
                    'pointHoverRadius' => 5,
                    'pointBackgroundColor' => '#f59e0b',
                ],
            ],
            'labels' => $labels,
        ];
    }

    protected function getType(): string
    {
        return 'line';
    }

    protected function getOptions(): array
    {
        return [
            'plugins' => [
                'legend' => [
                    'position' => 'top',
                    'align' => 'end',
                    'labels' => [
                        'font' => [
                            'family' => 'Vazirmatn',
                            'size' => 12,
                        ],
                        'usePointStyle' => true,
                        'boxWidth' => 8,
                    ],
                ],
                'tooltip' => [
                    'callbacks' => [
                        'label' => 'function(context) {
                            var v = context.parsed.y;
                            if (v === null || v === undefined) return "";
                            return context.dataset.label + ": " + v.toLocaleString("fa-IR") + " ریال";
                        }',
                    ],
                ],
            ],
            'scales' => [
                'y' => [
                    'beginAtZero' => true,
                    'ticks' => [
                        'callback' => 'function(value) { return value.toLocaleString("fa-IR"); }',
                        'font' => ['family' => 'Vazirmatn', 'size' => 11],
                    ],
                    'grid' => [
                        'color' => 'rgba(0, 0, 0, 0.05)',
                    ],
                ],
                'x' => [
                    'ticks' => [
                        'maxRotation' => 0,
                        'font' => ['family' => 'Vazirmatn', 'size' => 11],
                    ],
                    'grid' => [
                        'display' => false,
                    ],
                ],
            ],
            'maintainAspectRatio' => false,
        ];
    }
}