<?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;
use Illuminate\Database\Eloquent\Relations\HasMany;

/**
 * EAV storage row. Int PK for fast joins (ARCH §4.4). Typed columns are
 * populated by FormValueObserver based on field.value_storage_hint.
 */
final class FormValue extends Model
{
    use HasFactory;

    protected $fillable = [
        'form_submission_id',
        'form_field_id',
        'value',
        'value_indexed',
        'value_number',
        'value_date',
        'value_bool',
        'value_anonymised',
    ];

    /** @var array<string, string> */
    protected $casts = [
        'value' => 'array',
        'value_number' => 'decimal:4',
        'value_date' => 'date',
        'value_bool' => 'bool',
        'value_anonymised' => 'bool',
    ];

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

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

    public function options(): HasMany
    {
        return $this->hasMany(FormValueOption::class);
    }
}