// Enable method enables an Integration at OpsGenie.
func (cli *OpsGenieIntegrationClient) Enable(req integration.EnableIntegrationRequest) (*integration.EnableIntegrationResponse, error) {
	req.APIKey = cli.apiKey
	resp, err := cli.sendRequest(cli.buildPostRequest(enableIntegrationURL, req))

	if resp == nil {
		return nil, err
	}
	defer resp.Body.Close()

	var enableIntegrationResp integration.EnableIntegrationResponse
	if err = resp.Body.FromJsonTo(&enableIntegrationResp); err != nil {
		message := "Server response can not be parsed, " + err.Error()
		logging.Logger().Warn(message)
		return nil, errors.New(message)
	}

	return &enableIntegrationResp, nil
}
func (cli *OpsGenieIntegrationClient) Enable(req integration.EnableIntegrationRequest) (*integration.EnableIntegrationResponse, error) {
	req.ApiKey = cli.apiKey
	// validate mandatory fields: id/name, apiKey
	if req.ApiKey == "" && req.Id == "" {
		return nil, errors.New("Api Key or Id should be provided")
	}
	if req.ApiKey != "" && req.Id != "" {
		return nil, errors.New("Either Api Key or Id should be provided, not both")
	}
	// send the request
	var resp *goreq.Response
	var err error
	for i := 0; i < cli.retries; i++ {
		resp, err = cli.buildRequest("POST", ENABLE_INTEGRATION_URL, req).Do()
		if err == nil {
			break
		}
		time.Sleep(TIME_SLEEP_BETWEEN_REQUESTS)
	}
	if err != nil {
		return nil, errors.New("Can not enable the integration, unable to send the request")
	}
	// check for the returning http status, 4xx: client errors, 5xx: server errors
	statusCode := resp.StatusCode
	if statusCode >= 400 && statusCode < 500 {
		return nil, errors.New(fmt.Sprintf("Client error %d occured", statusCode))
	}
	if statusCode >= 500 {
		return nil, errors.New(fmt.Sprintf("Server error %d occured", statusCode))
	}
	// try to parse the returning JSON into the response
	var enableIntegrationResp integration.EnableIntegrationResponse
	if err = resp.Body.FromJsonTo(&enableIntegrationResp); err != nil {
		return nil, errors.New("Server response can not be parsed")
	}
	// parsed successfuly with no errors
	return &enableIntegrationResp, nil
}