<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;
use Illuminate\Database\Eloquent\Relations\HasMany;

class Invoice extends Model
{
    protected $fillable = [
        'student_id',
        'period_start',
        'period_end',
        'total',
        'status',
        'pdf_path',
    ];

    /**
     * The student this invoice is for.
     */
    public function student(): BelongsTo
    {
        return $this->belongsTo(StudentProfile::class, 'student_id');
    }

    /**
     * All invoice line items associated with this invoice.
     */
    public function items(): HasMany
    {
        return $this->hasMany(InvoiceItem::class);
    }
}