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sinch_gateway.go
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sinch_gateway.go
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package sms
import (
"context"
"encoding/base64"
"fmt"
"net/http"
"time"
"github.com/coretrix/hitrix/pkg/helper"
"github.com/coretrix/hitrix/service/component/clock"
)
const (
javascriptISOString = `2006-01-02T15:04:05.999Z07:00`
)
type SinchGateway struct {
Clock clock.IClock
AppID string
AppSecret string
MsgURL string
FromNumber string
CallURL string
CallerNumber string
}
func (g *SinchGateway) SendOTPSMS(otp *OTP) (string, error) {
return g.SendSMSMessage(&Message{
Text: fmt.Sprintf(otp.Template, otp.OTP),
Number: otp.Phone.Number,
})
}
func (g *SinchGateway) SendOTPCallout(otp *OTP) (string, error) {
return g.SendCalloutMessage(&Message{
Text: fmt.Sprintf(otp.Template, otp.OTP),
Number: otp.Phone.Number,
})
}
func (g *SinchGateway) SendSMSMessage(message *Message) (string, error) {
body := struct {
From string `json:"from"`
Message string `json:"message"`
Caller string `json:"caller"`
}{
From: g.FromNumber,
Message: message.Text,
Caller: message.Number,
}
headers := g.getSinchHeaders()
responseBody, _, code, err := helper.Call(
context.Background(),
"POST",
g.MsgURL+"/"+message.Number,
headers,
time.Duration(timeoutInSeconds)*time.Second,
body,
nil)
if err != nil {
return failure, err
}
if code != http.StatusOK {
return failure, fmt.Errorf("expected status code OK, but got %v Response: %s", code, string(responseBody))
}
return success, nil
}
type ttsCallOut struct {
CLI string `json:"cli"`
Domain string `json:"domain"`
Locale string `json:"locale"`
Text string `json:"text"`
Destination *destination `json:"destination"`
}
type destination struct {
Type string `json:"type"`
Endpoint string `json:"endpoint"`
}
func (g *SinchGateway) SendCalloutMessage(message *Message) (string, error) {
body := struct {
Method string `json:"method"`
TTSCallOut *ttsCallOut `json:"ttsCallOut"`
}{
Method: "ttsCallout",
TTSCallOut: &ttsCallOut{
CLI: g.CallerNumber,
Domain: "pstn",
Locale: "en-US",
Text: message.Text + "...." + message.Text + "...." + message.Text,
Destination: &destination{
Type: "number",
Endpoint: message.Number,
},
},
}
headers := g.getSinchHeaders()
responseBody, _, code, err := helper.Call(
context.Background(),
g.CallURL,
"POST",
headers,
time.Duration(timeoutInSeconds)*time.Second,
body,
nil)
if err != nil {
return failure, err
}
if code != http.StatusOK {
return failure, fmt.Errorf("expected status code OK, but got %v Response: %s", code, string(responseBody))
}
return success, nil
}
func (g *SinchGateway) getSinchHeaders() map[string]string {
base64Credentials := base64.StdEncoding.EncodeToString([]byte(g.AppID + ":" + g.AppSecret))
return map[string]string{
"Content-Type": "application/json",
"Authorization": "Basic " + base64Credentials,
"X-Timestamp": g.Clock.Now().Format(javascriptISOString),
}
}
func (g *SinchGateway) SendVerificationSMS(_ *OTP) (string, error) {
panic("not implemented.")
}
func (g *SinchGateway) SendVerificationCallout(_ *OTP) (string, error) {
panic("not implemented.")
}
func (g *SinchGateway) VerifyCode(_ *OTP) (string, error) {
panic("not implemented.")
}