<?php

namespace App\Filament\Widgets;

use App\Models\Department;
use App\Models\Feedback;
use Filament\Widgets\ChartWidget;

class HandlerPerformanceWidget extends ChartWidget
{
    protected ?string $heading = 'Avg Processing Time by Handler';

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

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

    protected function getData(): array
    {
        $user = auth()->user();

        $query = Feedback::query()
            ->whereIn('status', ['resolved', 'closed'])
            ->whereNotNull('assigned_to');

        if ($user->hasRole('manager')) {
            $deptIds = Department::where('manager_id', $user->id)->pluck('id');
            $query->whereIn('current_department_id', $deptIds);
        }

        $handlers = (clone $query)
            ->select('assigned_to')
            ->selectRaw('AVG(strftime("%s", updated_at) - strftime("%s", created_at)) / 60 as avg_minutes')
            ->groupBy('assigned_to')
            ->with('assignedTo')
            ->get();

        $labels = $handlers->map(fn ($h) => $h->assignedTo?->name ?? 'Unknown')->toArray();
        $data = $handlers->map(fn ($h) => round($h->avg_minutes, 1))->toArray();

        return [
            'datasets' => [
                [
                    'label' => 'Avg Time (minutes)',
                    'data' => $data,
                    'backgroundColor' => '#3b82f6',
                ],
            ],
            'labels' => $labels,
        ];
    }

    public static function canView(): bool
    {
        return auth()->user()?->hasRole(['admin', 'manager']) ?? false;
    }
}