<?php

namespace App\Models;

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

class SalesInvoice extends Model
{
    use HasFactory;

    protected $fillable = ['invoice_number', 'sales_order_id', 'customer_id', 'invoice_date', 'due_date', 'subtotal', 'vat_rate', 'vat_amount', 'total_amount', 'paid_amount', 'status', 'notes', 'created_by'];

    protected $casts = [
        'invoice_date' => 'date',
        'due_date' => 'date',
        'subtotal' => 'decimal:2',
        'vat_rate' => 'decimal:2',
        'vat_amount' => 'decimal:2',
        'total_amount' => 'decimal:2',
        'paid_amount' => 'decimal:2',
    ];

    public function salesOrder()
    {
        return $this->belongsTo(SalesOrder::class);
    }

    public function customer()
    {
        return $this->belongsTo(Customer::class);
    }

    public function paymentReceipts()
    {
        return $this->hasMany(PaymentReceipt::class);
    }

    public function createdBy()
    {
        return $this->belongsTo(\App\Models\User::class, 'created_by');
    }

    public function getOutstandingAttribute()
    {
        return $this->total_amount - $this->paid_amount;
    }
}