<?php

namespace App\Models;

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

class PurchaseOrderItem extends Model
{
    use HasFactory;

    protected $fillable = [
        'purchase_order_id',
        'part_id',
        'quantity_ordered',
        'quantity_received',
        'unit_cost',
        'total_cost',
        'notes',
    ];

    protected $casts = [
        'quantity_ordered' => 'integer',
        'quantity_received' => 'integer',
        'unit_cost' => 'decimal:2',
        'total_cost' => 'decimal:2',
    ];

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

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

    public function getQuantityPendingAttribute(): int
    {
        return $this->quantity_ordered - $this->quantity_received;
    }

    public function getIsCompleteAttribute(): bool
    {
        return $this->quantity_received >= $this->quantity_ordered;
    }

    public function getIsPartialAttribute(): bool
    {
        return $this->quantity_received > 0 && $this->quantity_received < $this->quantity_ordered;
    }
}