<?php

declare(strict_types=1);

namespace App\Filament\Charts;

use App\Support\ViewStats;
use Filament\Widgets\ChartWidget;

/**
 * Reads per day, one line per language. Lives outside `Filament/Widgets` so
 * the dashboard does not discover it: it belongs to the statistics page,
 * which says which period to draw.
 */
class ViewsByLanguageChart extends ChartWidget
{
    public int $days = 30;

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

    protected ?string $maxHeight = '280px';

    public function getHeading(): string
    {
        return __('panel.statistics.daily');
    }

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

    protected function getData(): array
    {
        $daily = (new ViewStats($this->days))->daily();
        $colors = ['#f59e0b', '#3b82f6', '#10b981', '#ef4444', '#8b5cf6'];

        return [
            'labels' => $daily['labels'],
            'datasets' => collect($daily['series'])
                ->values()
                ->map(fn (array $data, int $i) => [
                    'label' => config('locales.supported.'.array_keys($daily['series'])[$i].'.native'),
                    'data' => $data,
                    'borderColor' => $colors[$i % count($colors)],
                    'backgroundColor' => $colors[$i % count($colors)],
                    'tension' => 0.3,
                ])
                ->all(),
        ];
    }
}