<?php

namespace App\Services\Concerns;

use App\Enums\CashTransactionType;
use App\Models\CashAccount;
use App\Models\CashTransaction;
use Illuminate\Validation\ValidationException;

trait HandlesCashTransactions
{
    private function getCashAccount(): CashAccount
    {
        return CashAccount::firstOrFail();
    }

    private function creditCash(int $amount, string $description, CashTransactionType $type = CashTransactionType::DEPOSIT): CashTransaction
    {
        $cashAccount = $this->getCashAccount();
        $newBalance = $cashAccount->balance + $amount;

        $cashAccount->update(['balance' => $newBalance]);

        return CashTransaction::create([
            'cash_account_id' => $cashAccount->id,
            'created_by_id' => auth()->id(),
            'amount' => $amount,
            'balance_after' => $newBalance,
            'type' => $type,
            'description' => $description,
        ]);
    }

    private function debitCash(int $amount, string $description, CashTransactionType $type = CashTransactionType::EXPENSE): CashTransaction
    {
        $cashAccount = $this->getCashAccount();

        if ($cashAccount->balance < $amount) {
            throw ValidationException::withMessages([
                'amount' => 'Saldo tidak mencukupi.',
            ]);
        }

        $newBalance = $cashAccount->balance - $amount;
        $cashAccount->update(['balance' => $newBalance]);

        return CashTransaction::create([
            'cash_account_id' => $cashAccount->id,
            'created_by_id' => auth()->id(),
            'amount' => $amount,
            'balance_after' => $newBalance,
            'type' => $type,
            'description' => $description,
        ]);
    }
}