<?php

namespace App\Filament\Widgets;

use App\Models\Line;
use Filament\Widgets\ChartWidget;

class CumulativeChart extends ChartWidget
{
    protected static ?string $heading = 'Production Line Count';

    protected $listeners = ['cumulativeChart'];

    protected static ?string $maxHeight = '350px';


    protected int|string|array $columnSpan = 12;
    protected function getData(): array
    {
        $selectedPlant = session('selected_plant');
        $activeFilter = $this->filter;

        // Define date range based on filter
        switch ($activeFilter) {
            case 'yesterday':
                $startDate = now()->subDay()->startOfDay();
                $endDate = now()->subDay()->endOfDay();
                break;
            case 'this_week':
                $startDate = now()->startOfWeek();
                $endDate = now()->endOfWeek();
                break;
            case 'this_month':
                $startDate = now()->startOfMonth();
                $endDate = now()->endOfMonth();
                break;
            default: // today
                $startDate = now()->startOfDay();
                $endDate = now()->endOfDay();
                break;
        }

        // Get all lines for selected plant
        $lines = Line::where('plant_id', $selectedPlant)
            ->pluck('name', 'id')
            ->toArray();

        // Get total production per line in the date range
        $production = \DB::table('production_quantities')
            ->select('line_id', \DB::raw('COUNT(*) as total_quantity'))
            ->whereBetween('created_at', [$startDate, $endDate])
            ->whereIn('line_id', array_keys($lines))
            ->groupBy('line_id')
            ->pluck('total_quantity', 'line_id')
            ->toArray();

        // Match quantities with lines (fill 0 if missing)
        $labels = [];
        $data = [];

        foreach ($lines as $lineId => $lineName) {
            $labels[] = $lineName;
            $data[] = $production[$lineId] ?? 0;
        }

        return [
            'labels' => $labels,
            'datasets' => [
                [
                    'label' => match ($activeFilter) {
                        'yesterday' => "Production Quantity (Yesterday)",
                        'this_week' => "Daily Production This Week",
                        'this_month' => "Weekly Production This Month",
                        default => "Today's Production",
                },
                    'data' => $data,
                ],
            ],
        ];
    }


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

    protected function getFilters(): ?array
    {
        return [
            'today' => 'Today',
            'yesterday' => 'Yesterday',
            'this_week'=> 'This Week',
            'this_month'=> 'This Month',
        ];
    }

    protected function getOptions(): array
    {
        return [
            'scales' => [
                'y' => [
                    'beginAtZero' => true, //Start Y-axis from 0
                    'ticks' => [
                        'stepSize' => 0.5,
                    ],
                ],
            ],

        ];
    }

}