<?php

declare(strict_types=1);

namespace App\Models\FormBuilder;

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

/**
 * Filter pivot for multi-value fields (MULTISELECT, CHECKBOX_LIST, TAG_PICKER).
 * Rows rebuilt by FormValueObserver on each save. No timestamps — ephemeral,
 * always regenerated from form_values.value.
 */
final class FormValueOption extends Model
{
    use HasFactory;

    public $timestamps = false;

    protected $fillable = [
        'form_value_id',
        'form_field_id',
        'form_submission_id',
        'option_value',
    ];

    public function value(): BelongsTo
    {
        return $this->belongsTo(FormValue::class, 'form_value_id');
    }

    public function field(): BelongsTo
    {
        return $this->belongsTo(FormField::class, 'form_field_id');
    }

    public function submission(): BelongsTo
    {
        return $this->belongsTo(FormSubmission::class, 'form_submission_id');
    }
}