calculator-service.go

package cdekapi

import (
	"context"
	"errors"
	"fmt"
	"time"
)

func (c *Client) Calculator(ctx context.Context, request CalculatorRequest) (CalculatorResponse, error) {

	var ret CalculatorResponse

	req := c.calculatorPrepare(&request)

	resp, err := c.getRequest(ctx).
		SetResult(&CalculatorResponse{}).
		SetBody(req).
		SetError(&ErrorApiV2{}).
		Post(apiCalculator)

	if err != nil {
		return ret, err
	}

	if resp.StatusCode() > 399 {
		return ret, fmt.Errorf("http error: %s", resp.Status())
	}

	if result, ok := resp.Result().(*CalculatorResponse); ok {
		if len(result.Errors) > 0 {
			return ret, errors.New(result.Errors[0].Message)
		}

		return *result, nil
	}

	return ret, errors.New("can't convert response to calculator response struct")
}

func (c Client) calculatorPrepare(request *CalculatorRequest) *CalculatorRequest {
	if request.Date == "" {
		request.Date = time.Now().Format("2006-01-02T15:04:05-0700")
	}

	return request
}