<?php

namespace App\Filament\Widgets;

use App\Models\PurchaseHistory;
use Filament\Widgets\LineChartWidget;

class RevenueTrendWidget extends LineChartWidget
{
    protected static ?int $sort = 1;

    protected int|string|array $columnSpan = 'full';

    public function getHeading(): ?string
    {
        return __('admin.widgets.revenue_trend.heading');
    }

    protected function getData(): array
    {
        $start = now()->startOfMonth()->subMonths(11);
        $months = collect(range(0, 11))->map(fn (int $offset) => $start->copy()->addMonths($offset));

        $records = PurchaseHistory::query()
            ->where('purchased_at', '>=', $start)
            ->get(['purchased_at', 'price']);

        $grouped = $records->groupBy(fn (PurchaseHistory $history) => $history->purchased_at?->format('Y-m'));

        $labels = [];
        $values = [];

        foreach ($months as $month) {
            $key = $month->format('Y-m');
            $labels[] = $month->translatedFormat('M Y');
            $total = $grouped->get($key, collect())->sum(fn (PurchaseHistory $history) => (float) $history->price);
            $values[] = round($total, 2);
        }

        return [
            'datasets' => [
                [
                    'label' => __('admin.widgets.revenue_trend.series'),
                    'data' => $values,
                    'borderColor' => '#ec4899',
                    'backgroundColor' => 'rgba(236, 72, 153, 0.2)',
                    'tension' => 0.4,
                    'fill' => 'origin',
                ],
            ],
            'labels' => $labels,
        ];
    }
}