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smssender.go
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smssender.go
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package bouyguestelecom
import (
"github.com/pkg/errors"
"log"
"net/url"
"regexp"
"strconv"
"strings"
)
type smsSender interface {
SendSms(msg string, to string) error
}
type httpSmsSender struct {
client httpClient
smsLeftGetter smsLeftGetter
}
func (sender *httpSmsSender) SendSms(msg message, phoneNumbers phoneNumbers) (SmsLeft, error) {
err := sender.checkSmsLeft(phoneNumbers)
if err != nil {
return NoSmsLeft, err
}
err = sender.composeMessage(msg, phoneNumbers)
if err != nil {
return NoSmsLeft, err
}
return sender.confirmMessage()
}
func (sender *httpSmsSender) checkSmsLeft(phonenumbers phoneNumbers) error {
log.Println("Checking SMS left...")
smsLeft, err := sender.smsLeftGetter.Get()
if err != nil {
return err
}
if smsLeft.IsExceeded() {
return errors.New("No SMS left")
}
if int(smsLeft) < len(phonenumbers) {
return errors.Errorf("too many phone numbers compared to SMS left (%d phone numbers, %d SMS left)", len(phonenumbers), smsLeft)
}
log.Printf("SMS left before sending: %d\n", smsLeft)
return err
}
func (sender *httpSmsSender) composeMessage(msg message, phoneNumbers phoneNumbers) error {
log.Printf("Composing message to %s\n", phoneNumbers)
msgForm := make(url.Values)
msgForm.Add("fieldMsisdn", phoneNumbers.String())
msgForm.Add("fieldMessage", msg.String())
msgForm.Add("Verif.x", "51")
msgForm.Add("Verif.y", "16")
sendMessageURL := "https://www.secure.bbox.bouyguestelecom.fr/services/SMSIHD/confirmSendSMS.phtml"
body, err := sender.client.PostForm(sendMessageURL, msgForm)
if err != nil {
return errors.Wrap(err, "unable to compose sms")
}
if !strings.Contains(body, ">Validation<") {
return errors.Errorf("validation of message failed. Body: %s", body)
}
log.Println("Message composed")
return nil
}
func (sender *httpSmsSender) confirmMessage() (SmsLeft, error) {
log.Println("Confirming message...")
body, err := sender.client.Get("https://www.secure.bbox.bouyguestelecom.fr/services/SMSIHD/resultSendSMS.phtml")
if err != nil {
return NoSmsLeft, err
}
if !strings.Contains(body, "Votre message a bien été envoyé") {
return NoSmsLeft, errors.Errorf("unable to confirm message sending (last step results in unattended message). Body: %s", body)
}
regex := regexp.MustCompile("(\\d*) message(s)? gratuit(s)?")
matches := regex.FindStringSubmatch(body)
if len(matches) < 2 {
return NoSmsLeft, errors.Errorf("unable to read SMS left. Body: %s", body)
}
smsLeft, err := strconv.Atoi(matches[1])
if err != nil {
return NoSmsLeft, errors.Wrapf(err, "unable to convert %v to int", matches[1])
}
log.Printf("Message confirmed. SMS left after sending: %d", smsLeft)
return SmsLeft(smsLeft), nil
}