<?php

declare(strict_types=1);

namespace App\Services;

use App\Models\CommonCatalogItem;
use App\Models\Setting;

class TechnicalDescriptionService
{
    public const MODE_CHARACTERISTICS_SHORT = 'characteristics_short';
    public const MODE_CHARACTERISTICS_FULL = 'characteristics_full';
    public const MODE_SHORT = 'short';
    public const MODE_FULL = 'full';
    public const MODE_CHARACTERISTICS = 'characteristics';

    public const DESCRIPTION_MODES = [
        self::MODE_CHARACTERISTICS_SHORT => 'Характеристики + краткое описание',
        self::MODE_CHARACTERISTICS_FULL => 'Характеристики + полное описание',
        self::MODE_SHORT => 'Только краткое описание',
        self::MODE_FULL => 'Только полное описание',
        self::MODE_CHARACTERISTICS => 'Только характеристики',
    ];

    public function priceField(): string
    {
        return Setting::technicalDescriptionPriceField();
    }

    public function priceLabel(): string
    {
        return CommonCatalogItem::PRICE_FIELDS[$this->priceField()];
    }

    public function price(CommonCatalogItem $item): ?float
    {
        $value = $item->{$this->priceField()};

        return $value === null ? null : (float) $value;
    }

    public function formattedPrice(CommonCatalogItem $item): string
    {
        $price = $this->price($item);

        return $price === null ? '' : number_format($price, 2, '.', ' ');
    }

    public function description(CommonCatalogItem $item, string $mode): string
    {
        $parts = match ($mode) {
            self::MODE_CHARACTERISTICS_SHORT => [$item->characteristics, $item->technical_description_short],
            self::MODE_CHARACTERISTICS_FULL => [$item->characteristics, $item->technical_description],
            self::MODE_SHORT => [$item->technical_description_short],
            self::MODE_FULL => [$item->technical_description],
            default => [$item->characteristics],
        };

        return collect($parts)
            ->map(fn (mixed $value): string => trim((string) $value))
            ->filter()
            ->implode("\n");
    }
}