<?php

namespace App\Filament\Traits;

use App\Models\Article;
use Filament\Forms\Get;
use Filament\Forms\Set;
use Filament\Forms\Components\Select;
use Filament\Forms\Components\TimePicker;
use Filament\Forms\Components\TextInput;
use Filament\Forms\Components\Actions\Action;
use Filament\Support\Enums\MaxWidth;

trait HasArticleSelection
{
    protected static function getArticleSelectionField(): Select
    {
        return Select::make('article_id')
            ->label('Article')
            ->relationship('article', 'name')
            ->searchable()
            ->preload()
            ->required()
            ->live()
            ->afterStateUpdated(function (Get $get, Set $set, $state, $livewire, $component) {
                // Set price from article
                if ($state) {
                    $article = Article::find($state);
                    if($article){
                        $set('price', $article->price);
                        $set('unit', $article->unit);
                        $set('quantity', $article->unit === 'hour' ? 0 : 1);
                        // Auto-open the modal if unit is hour
                        if ($article->unit === 'hour') {
                            $livewire->mountFormComponentAction(
                                $component->getStatePath(),
                                'show_time_modal'
                            );
                        }
                        static::calculateLineItemTotal($get, $set);
                        static::calculateTotals($get, $set);
                    }
                }
            })
            ->registerActions([
                Action::make('show_time_modal')
                    ->label('Calculate Time')
                    ->modalHeading('Work Time Calculation')
                    ->modalWidth(MaxWidth::Small)
                    ->form([
                        TimePicker::make('from_time')->required()->seconds(false),
                        TimePicker::make('to_time')->required()->seconds(false),
                        TextInput::make('lunch_break')->label('Lunch Break (minutes)')->required()->numeric(),
                    ])
                    ->action(function (array $data, Get $get, Set $set) {
                        $from = \Carbon\Carbon::parse($data['from_time']);
                        $to = \Carbon\Carbon::parse($data['to_time']);
                        $hours = $from->floatDiffInHours($to);

                        $lunchBreakHours = (float) $data['lunch_break'] / 60;
                        $finalHours = $hours - $lunchBreakHours;

                        // Set quantity (hours)
                        $set('quantity', number_format($finalHours, 2));

                        // Append to description
                        $currentDescription = $get('description') ?? '';
                        $timeDetails = "{$data['from_time']} - {$data['to_time']} inc {$data['lunch_break']}min break";

                        $newDescription = $currentDescription
                            ? "{$currentDescription}\n{$timeDetails}"
                            : $timeDetails;

                        $set('description', $newDescription);
                    })
                    ->mountUsing(function ($form) {
                        $form->fill([
                            'from_time' => now()->format('H:i'),
                            'to_time' => now()->addHour()->format('H:i'),
                        ]);
                    })
                    ->modalSubmitActionLabel('Apply')
                    ->modalCancelActionLabel('Cancel'),
            ]);
    }

    protected static function getUnitSelectField(): Select
    {
        return Select::make('unit')
            ->required()
            ->options([
                'hour' => 'hour',
                'm2' => 'm2',
                'piece' => 'piece',
                'length' => 'length',
            ])
            ->preload();
    }
}