<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;

class RecipeIngredient extends Model
{
    use HasFactory;

    protected $fillable = [
        'recipe_id',
        'ingredient_id',
        'option_set_item_id',
        'quantity',
        'unit',
        'notes',
    ];

    protected $casts = [
        'quantity' => 'decimal:4',
    ];

    public function recipe(): BelongsTo
    {
        return $this->belongsTo(Recipe::class);
    }

    public function ingredient(): BelongsTo
    {
        return $this->belongsTo(Ingredient::class);
    }

    public function sizeOption(): BelongsTo
    {
        return $this->belongsTo(OptionSetItem::class, 'option_set_item_id');
    }

    public function getEffectiveUnit(): string
    {
        return $this->unit ?? $this->ingredient->unit;
    }

    public function getCost(): float
    {
        return $this->quantity * $this->ingredient->cost_per_unit;
    }
}
