<?php

namespace App\Models;

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

class Advance extends Model
{
    use HasFactory;

    protected $fillable = [
        'date',
        'user_id',
        'amount',
        'advance_type_id',
    ];

    protected function casts(): array
    {
        return [
            'date' => 'date',
            'amount' => 'decimal:2',
        ];
    }

    protected static function booted(): void
    {
        static::saving(function (Advance $advance) {
            $typeName = AdvanceType::whereKey($advance->advance_type_id)->value('name');
            $amount = abs((float) $advance->amount);

            $advance->amount = $typeName === 'Wpłata' ? $amount : -$amount;
        });

        static::saved(function (Advance $advance) {
            static::refreshUserAdvanceBalance($advance->user_id);

            if ($advance->wasChanged('user_id')) {
                static::refreshUserAdvanceBalance($advance->getOriginal('user_id'));
            }
        });

        static::deleted(function (Advance $advance) {
            static::refreshUserAdvanceBalance($advance->user_id);
        });
    }

    private static function refreshUserAdvanceBalance(int $userId): void
    {
        $balance = static::where('user_id', $userId)->sum('amount');

        UserAdvanceBalance::updateOrCreate(
            ['user_id' => $userId],
            ['balance' => (float) $balance]
        );
    }

    public function user(): BelongsTo
    {
        return $this->belongsTo(User::class);
    }

    public function type(): BelongsTo
    {
        return $this->belongsTo(AdvanceType::class, 'advance_type_id');
    }
}