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smsdeliveryservice.go
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smsdeliveryservice.go
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package twilio
import (
"encoding/json"
"errors"
"fmt"
"io/ioutil"
"net/http"
"net/url"
"strings"
"github.com/kadisoka/iam/pkg/iamserver/pnv10n"
)
// SendTextMessage is use for send text message using sms delivery service
func (sms *SMSDeliveryService) SendTextMessage(recipient, text string) error {
endPoint := fmt.Sprintf(sms.endpointURL, sms.config.AccountSID)
bodyReq := url.Values{}
bodyReq.Set("To", recipient)
bodyReq.Set("From", sms.config.Sender)
bodyReq.Set("Body", text)
payload := strings.NewReader(bodyReq.Encode())
req, err := http.NewRequest("POST", endPoint, payload)
if err != nil {
return errors.New("Unable to build new request -> " + err.Error())
}
req.SetBasicAuth(sms.config.AccountSID, sms.config.AuthToken)
req.Header.Add("Accept", "application/json")
req.Header.Add("Content-Type", "application/x-www-form-urlencoded")
// https://medium.com/@nate510/don-t-use-go-s-default-http-client-4804cb19f779
httpClient := &http.Client{}
resp, err := httpClient.Do(req)
if err != nil {
return err
}
// resp.StatusCode is between 200 and 300.
// This is because an HTTP status code with the form 2XX signifies a successful HTTP POST request
if resp.StatusCode >= 200 && resp.StatusCode < 300 {
return nil
}
var errorData twilioErrorResponse
errBody, err := ioutil.ReadAll(resp.Body)
err = json.Unmarshal(errBody, &errorData)
if err != nil {
return err
}
switch errorData.Code {
case 20003:
return pnv10n.ConfigurationError{Err: errors.New(string(errBody))}
case 20404:
return pnv10n.GatewayError{Err: errors.New(string(errBody))}
case 21211: // Invalid phone number
return pnv10n.InvalidPhoneNumberError{Err: errors.New(string(errBody))}
case 21408: // Permission to send an SMS has not been enabled for the region
return pnv10n.PhoneNumberRegionNotSupportedError{Err: errors.New(string(errBody))}
case 21614: // Not a mobile phone number
return pnv10n.InvalidPhoneNumberError{Err: errors.New(string(errBody))}
case 30008: // Unknown error
return pnv10n.GatewayError{Err: errors.New(string(errBody))}
}
return nil
}
type twilioErrorResponse struct {
Code int64 `json:"code"`
Message string `json:"message"`
MoreInfo string `json:"more_info"`
Status int64 `json:"status"`
}