package service

import (
	"context"
	"time"

	"git.gocasts.ir/ebhomengo/niki/domain/wallet/entity"
	"git.gocasts.ir/ebhomengo/niki/domain/wallet/param"
	richerror "git.gocasts.ir/ebhomengo/niki/pkg/rich_error"
	"git.gocasts.ir/ebhomengo/niki/pkg/types"

	//"git.gocasts.ir/ebhomengo/niki/pkg/types"
	"github.com/shopspring/decimal"
)

func (s Service) CreateTransaction(ctx context.Context, request param.CreateTransactionRequest) (param.InsertTransactionResponse, error) {

	const op = richerror.Op("wallet.service.CreateTransaction")

	currencyRate := s.convertCurrency(request.Currency)

	convertedAmount, _ := decimal.NewFromString(request.Amount)

	transaction := entity.Transaction{
		ID:         0,
		UserID:     request.UserID,
		Amount:     convertedAmount,
		Currency:   request.Currency,
		ActionType: request.ActionType,
		Timestamp:  request.Timestamp,
		CreatedAt:  time.Now(),
	}

	balance, walletCurrency, inErr := s.repo.InsertTransaction(ctx, transaction, currencyRate)
	if inErr != nil {
		return param.InsertTransactionResponse{}, richerror.New(op).WithErr(inErr)
	}

	return param.InsertTransactionResponse{Balance: balance, Currency: walletCurrency}, nil

}

func (s Service) convertCurrency(currency types.Currency) decimal.Decimal {

	if currency != types.IRR {
		currencyRate, cErr := s.currencyRateProvider.GetCurrencyPriceRateInIRR(currency)
		if cErr != nil {
			// log //  fallback or change provider
			return decimal.Zero // if 0 => transaction commited with currency but wallet doesn't update or add 0 to wallet
		}

		return currencyRate

	}
	return decimal.NewFromInt(1)

}