qiwi.go

package qiwi

import (
	"bytes"
	"encoding/json"
	"errors"
	"fmt"
	"io"
	"io/ioutil"
	"net/http"
	"time"
)

const (
	MaxIdleConnections int    = 20000
	RequestTimeout     int    = 25
	ApiUrl             string = "https://edge.qiwi.com"
)

type QiwiPersonalApi struct {
	httpClient *http.Client
	apiKey     string
}

func NewQiwiPersonalApiWithHttpClient(apiKey string, client *http.Client) *QiwiPersonalApi {
	qiwi := new(QiwiPersonalApi)
	qiwi.httpClient = client
	qiwi.apiKey = apiKey
	return qiwi
}

func NewQiwiPersonalApi(apiKey string) *QiwiPersonalApi {
	client := &http.Client{
		Transport: &http.Transport{
			MaxIdleConnsPerHost: MaxIdleConnections,
		},
		Timeout: time.Duration(RequestTimeout) * time.Second,
	}

	return NewQiwiPersonalApiWithHttpClient(apiKey, client)
}

func (qiwi *QiwiPersonalApi) newRequest(apiKey, method, spath string, data map[string]interface{}) (req *http.Request, err error) {
	var path = ApiUrl + spath
	var body io.Reader
	if len(data) > 0 {
		s, err := json.Marshal(data)

		if err != nil {
			return nil, err
		}
		body = bytes.NewBuffer(s)
	}
	req, err = http.NewRequest(method, path, body)
	if err != nil {
		return nil, err
	}

	req.Header.Add("Content-Type", "application/json")
	req.Header.Add("Accept", "application/json")
	req.Header.Set("Authorization", "Bearer "+apiKey)

	return req, err
}

type QiwiTransError struct {
	Code    string
	Message string
}

func (qiwi *QiwiPersonalApi) sendRequest(apiKey, method, spath string, data map[string]interface{}) (body []byte, err error) {
	req, err := qiwi.newRequest(apiKey, method, spath, data)
	response, err := qiwi.httpClient.Do(req)
	if err != nil && response == nil {
		return nil, err
	} else {
		body, err := ioutil.ReadAll(response.Body)

		if err != nil {
			if response.Body != nil {
				response.Body.Close()
			}
			return nil, err
		}
		if response.StatusCode == 400 {
			var res QiwiTransError
			err = json.Unmarshal(body, &res)
			if err != nil {
				return nil, err
			}
			return nil, fmt.Errorf("%s : %s", res.Code, res.Message)
		}
		if response.StatusCode != 200 {
			return nil, errors.New(response.Status)
		}
		if response.Body != nil {
			response.Body.Close()
		}
		return body, nil
	}
}

type Currency int

const (
	CURRENCY_RUB Currency = 643
	CURRENCY_USD Currency = 840
	CURRENCY_EUR Currency = 978
)

type IdentificationLevel string

const (
	ID_LEVEL_SIMPLE    IdentificationLevel = "SIMPLE"
	ID_LEVEL_VERIFIED  IdentificationLevel = "VERIFIED"
	ID_LEVEL_FULL      IdentificationLevel = "FULL"
	ID_LEVEL_ANONYMOUS IdentificationLevel = "ANONYMOUS"
)

type PaymentSource string

const (
	PAY_SOURCE_QW_RUB PaymentSource = "QW_RUB"
	PAY_SOURCE_QW_USD PaymentSource = "QW_USD"
	PAY_SOURCE_QW_EUR PaymentSource = "QW_EUR"
	PAY_SOURCE_CARD   PaymentSource = "CARD"
	PAY_SOURCE_MK     PaymentSource = "MK"
)

type PaymentHistoryOperation string

const (
	PH_OPERATION_ALL       PaymentHistoryOperation = "ALL"
	PH_OPERATION_IN        PaymentHistoryOperation = "IN"
	PH_OPERATION_OUT       PaymentHistoryOperation = "OUT"
	PH_OPERATION_QIWI_CARD PaymentHistoryOperation = "QIWI_CARD"
)

type PaymentStatus string

const (
	PAY_STATUS_WAITING PaymentStatus = "WAITING"
	PAY_STATUS_SUCCESS PaymentStatus = "SUCCESS"
	PAY_STATUS_ERROR   PaymentStatus = "ERROR"
)

/*
99 - Перевод на QIWI Wallet
1963 - Перевод на карту Visa (карты российских банков)
21013 - Перевод на карту MasterCard (карты российских банков)
Для карт, выпущенных банками стран Азербайджан, Армения, Белоруссия, Грузия, Казахстан, Киргизия, Молдавия, Таджикистан, Туркменистан, Украина, Узбекистан:
1960 – Перевод на карту Visa
21012 – Перевод на карту MasterCard
31652 - национальная платежная система МИР
466 - Тинькофф Банк
464 - Альфа-Банк
*/

type PaymentProvider string

const (
	PROVIDER_QIWI_WALLET    PaymentProvider = "99"
	PROVIDER_VISA           PaymentProvider = "1963"
	PROVIDER_MASTERCARD     PaymentProvider = "21013"
	PROVIDER_VISA_CIS       PaymentProvider = "1960"
	PROVIDER_MASTERCARD_CIS PaymentProvider = "21012"
	PROVIDER_MIR            PaymentProvider = "31652"
	PROVIDER_TINKOFF        PaymentProvider = "466"
	PROVIDER_ALFABANK       PaymentProvider = "464"
)