<?php

namespace App\Models;

use App\Enums\CompanyMergeSubject;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;

/**
 * Ein verschobener Datensatz innerhalb einer Zusammenführung (Roadmap 1a.3).
 * Nur über `CompanyMerge` sinnvoll; ohne Zeitstempel, weil der am Vorgang
 * steht.
 */
class CompanyMergeMove extends Model
{
    public $timestamps = false;

    protected $fillable = [
        'company_merge_id',
        'subject',
        'subject_id',
        'from_company_id',
        'field',
        'previous_value',
        'merged_value',
        'dropped',
    ];

    /**
     * @return array<string, string>
     */
    protected function casts(): array
    {
        return [
            'subject' => CompanyMergeSubject::class,
            'dropped' => 'boolean',
        ];
    }

    /**
     * @return BelongsTo<CompanyMerge, $this>
     */
    public function merge(): BelongsTo
    {
        return $this->belongsTo(CompanyMerge::class, 'company_merge_id');
    }
}