<?php

namespace App\Models;

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

class Invoice extends Model
{
    use HasFactory;

    /**
     * The attributes that are mass assignable.
     *
     * @var array<int, string>
     */
    protected $fillable = [
        'tenant_id',
        'amount',
        'status',
        'due_date',
        'student_user_id',
        'payer_user_id',
    ];

    /**
     * The attributes that should be cast.
     *
     * @var array<string, string>
     */
    protected $casts = [
        'amount' => 'decimal:2',
        'due_date' => 'date',
    ];

    /**
     * Get the tenant that owns the invoice.
     */
    public function tenant(): BelongsTo
    {
        return $this->belongsTo(Tenant::class);
    }

    /**
     * Get the student user that owns the invoice.
     */
    public function student(): BelongsTo
    {
        return $this->belongsTo(User::class, 'student_user_id');
    }

    /**
     * Get the payer user that owns the invoice.
     */
    public function payer(): BelongsTo
    {
        return $this->belongsTo(User::class, 'payer_user_id');
    }
}