<?php

namespace App\Models;

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

class ClientTierHistory extends Model
{
    protected $table = 'client_tier_history';

    public $timestamps = false;

    protected $fillable = [
        'client_id',
        'old_tier_id',
        'new_tier_id',
        'total_at_change',
        'reason',
        'changed_at',
    ];

    protected $casts = [
        'total_at_change' => 'decimal:2',
        'changed_at' => 'datetime',
    ];

    /**
     * Cliente con historial de niveles
     */
    public function client(): BelongsTo
    {
        return $this->belongsTo(Client::class);
    }

    /**
     * Nivel anterior
     */
    public function oldTier(): BelongsTo
    {
        return $this->belongsTo(ClientTier::class, 'old_tier_id');
    }

    /**
     * Nivel nuevo
     */
    public function newTier(): BelongsTo
    {
        return $this->belongsTo(ClientTier::class, 'new_tier_id');
    }
}