<?php
namespace App\Filament\Pages;

use Filament\Forms\Components\Select;
use Filament\Forms\Components\TextInput;
use Filament\Forms\Form;
use Filament\Pages\Dashboard\Concerns\HasFiltersForm;
use Filament\Tables\Filters\SelectFilter;
use Illuminate\Support\Facades\DB;
use App\Models\Plant;


class Dashboard extends \Filament\Pages\Dashboard
{
   use HasFiltersForm;

   public function filtersForm(Form $form): Form
   {
    $selectedPlant = session('selected_plant', request()->input('filters.Plant'));
    return $form->schema([
             // Plant Filter
             Select::make('Plant')
             ->options(Plant::pluck('name', 'id')) // Fetch plant names with their IDs
             ->label('Select Plant')
             ->reactive()
             ->afterStateUpdated(function ($state, callable $set) use ($selectedPlant) {
                session(['selected_plant' => $state]);
                session()->forget('selected_line');
                $set('Plant', $state);
                $set('Line', null);
                $this->triggerChartUpdate();
            }),

            // Line Filter
            Select::make('Line')
                ->options(function ($get) {
                    $plantId = $get('Plant');
                    return $plantId ? Plant::find($plantId)->getLineNames()->pluck('name', 'id') : [];
                })
                ->label('Select Line')
                ->reactive()
                ->afterStateUpdated(function ($state) {
                    session(['selected_line' => $state]); // Store in session
                    $this->triggerChartUpdate(); // Notify chart to refresh
                }),
     ]);
   }

   // Helper to check if both filters are set
    public function triggerChartUpdate(): void
    {
        if (session()->has('selected_plant') && session()->has('selected_line')) {
            $this->dispatch('filtersUpdated');
        }
    }
}