<?php

namespace kernel\app_modules\card\services;

use kernel\app_modules\card\models\Card;
use kernel\app_modules\card\models\CardTemplate;
use kernel\app_modules\card\models\CardTransaction;
use kernel\FormModel;

class CardTransactionService
{
    protected array $errors = [];

    public function create(FormModel $form_model): false|CardTransaction
    {
        $model = new CardTransaction();

        $fromId = (int)$form_model->getItem('from');
        $toId = (int)$form_model->getItem('to');

        if ($fromId !== 1001){
            $fromCard = Card::where("id", $form_model->getItem('from'))->first();
            if (!$fromCard){
                $this->errors[] = ["error_id" => 3, "error_msg" => "Sender not found"];
                return false;
            }
            $model->from_balance = $fromCard->balance;
        }

        if ($toId !== 1001){
            $toCard = Card::where("id", $form_model->getItem('to'))->first();
            if (!$toCard){
                $this->errors[] = ["error_id" => 3, "error_msg" => "Recipient not found"];
                return false;
            }
            $model->to_balance = $toCard->balance;
        }

        if ($fromId !== 1001){
            if ($fromCard->balance < $form_model->getItem('amount')){
                $this->errors[] = ["error_id" => 3, "error_msg" => "Insufficient funds of the sender"];
            }
        }

        // Пример заполнения:
        $model->from = $form_model->getItem('from');
        $model->to = $form_model->getItem('to');
        $model->status = $form_model->getItem('status');
        $model->type = $form_model->getItem('type');
        $model->amount = $form_model->getItem('amount');
        // $model->slug = Slug::createSlug($form_model->getItem('title'), Card::class); // Генерация уникального slug

        if ($model->save()) {
            if (isset($fromCard)){
                $fromCard->balance = $fromCard->balance - (int)$form_model->getItem('amount');
                $fromCard->save();
            }
            if (isset($toCard)){
                $toCard->balance = $toCard->balance + (int)$form_model->getItem('amount');
                $toCard->save();
            }

            return $model;
        }

        return false;
    }

    public function update(FormModel $form_model, CardTransaction $cardTransaction): false|CardTransaction
    {
        $fromCard = Card::where("id", $form_model->getItem('from'))->first();
        if (!$fromCard){
            $this->errors[] = ["error_id" => 3, "error_msg" => "Sender not found"];
            return false;
        }

        $toCard = Card::where("id", $form_model->getItem('to'))->first();
        if (!$toCard){
            $this->errors[] = ["error_id" => 3, "error_msg" => "Recipient not found"];
            return false;
        }

        if ($fromCard->balance < $form_model->getItem('amount')){
            $this->errors[] = ["error_id" => 3, "error_msg" => "Insufficient funds of the sender"];
        }
        // Пример обновления:
        $cardTransaction->from = $form_model->getItem('from');
        $cardTransaction->to = $form_model->getItem('to');
        $cardTransaction->amount = $form_model->getItem('amount');
        $cardTransaction->type = $form_model->getItem('type');
        $cardTransaction->status = $form_model->getItem('status');

        if ($cardTransaction->save()) {
            return $cardTransaction;
        }

        return false;
    }

    public function getErrorsString(): string
    {
        $errStr = "";
        foreach ($this->errors as $error){
            $errStr .= $error['error_msg'] . ". ";
        }

        return $errStr;
    }

}