init module

This commit is contained in:
Nam Huynh 2021-08-09 11:41:57 +07:00
parent de0b9eb004
commit 445617624a
12 changed files with 503 additions and 1 deletions

2
.gitignore vendored
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@ -13,3 +13,5 @@
# Dependency directories (remove the comment below to include it) # Dependency directories (remove the comment below to include it)
# vendor/ # vendor/
.idea

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# vietguys # vietguys

10
constant.go Normal file
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package vietguys
// Constant
const (
logCollectionName = "log_sms_vietguys"
SMSTypeOTP = "otp"
SellyOTPContent = "Selly - Ma xac nhan cua ban la %s"
)

8
go.mod Normal file
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module github.com/Selly-Modules/vietguys
go 1.16
require (
github.com/Selly-Modules/mongodb v0.0.0-20210809042025-449f377c954a
go.mongodb.org/mongo-driver v1.7.1
)

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go.sum Normal file
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helper.go Normal file
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package vietguys
import (
"time"
"go.mongodb.org/mongo-driver/bson"
)
const (
otpValidMinute = 30
)
// Check phone or ip can send sms
func (s Service) checkCanSend(phone, ip string) bool {
var (
canSend = true
startOfToday = startOfDate(time.Now())
)
// Check phone number first
if len(phone) > 0 && s.PhoneMaxSendPerDay > 0 {
total, _ := s.DB.CountDocuments(bgCtx, bson.M{
"phoneNumber": phone,
"createdAt": bson.M{
"$gte": startOfToday,
},
})
canSend = total > int64(s.PhoneMaxSendPerDay)
}
// Check ip, but only check if can send
if canSend && len(ip) > 0 && s.IPMaxSendPerDay > 0 {
total, _ := s.DB.CountDocuments(bgCtx, bson.M{
"ip": ip,
"createdAt": bson.M{
"$gte": startOfToday,
},
})
canSend = total > int64(s.IPMaxSendPerDay)
}
return canSend
}
// Check otp right or not
func (s Service) checkOTP(phone, otpCode string) bool {
var (
timeAgo = timeBeforeNowInMin(otpValidMinute)
)
total, _ := s.DB.CountDocuments(bgCtx, bson.M{
"phoneNumber": phone,
"code": otpCode,
"isCodeValid": true,
"createdAt": bson.M{
"$gte": timeAgo,
},
})
isValid := total > 0
// If success, set code valid to false
if isValid {
s.DB.UpdateOne(bgCtx, bson.M{
"code": otpCode,
}, bson.M{
"$set": bson.M{
"isCodeValid": false,
},
})
}
return isValid
}

33
log.go Normal file
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package vietguys
import (
"fmt"
"time"
"go.mongodb.org/mongo-driver/bson/primitive"
)
// Log ...
type Log struct {
ID primitive.ObjectID `bson:"_id"`
Carrier string `bson:"carrier"`
Type string `bson:"type"`
PhoneNumber string `bson:"phoneNumber"`
Code string `bson:"code"`
IsCodeValid bool `bson:"isCodeValid"`
Content string `bson:"content"`
IP string `bson:"ip"`
Success bool `bson:"success"`
Result string `bson:"result"`
CreatedAt time.Time `bson:"createdAt"`
tableName string
}
// Save log to db
func (s Service) saveLog(doc Log) {
if _, err := s.DB.InsertOne(bgCtx, doc); err != nil {
fmt.Println("*** Error when create log", err)
fmt.Println("*** Log", doc)
}
}

30
random_otp.go Normal file
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package vietguys
import (
"math/rand"
"time"
)
// Constant ...
const (
otpCharacters = "123456789"
otpLength = 6
)
// randomIntBetweenRange ...
func randomIntBetweenRange(min int, max int) int {
rand.Seed(time.Now().UnixNano())
return rand.Intn(max-min) + min
}
// randomOTPCode ...
func randomOTPCode() string {
var code string
var length = len(otpCharacters)
for i := 0; i < otpLength; i++ {
// Random character index
randIndex := randomIntBetweenRange(0, length)
code += string(otpCharacters[randIndex])
}
return code
}

106
send_otp.go Normal file
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package vietguys
import (
"encoding/json"
"errors"
"fmt"
"io/ioutil"
"net/http"
"net/url"
"strings"
"github.com/Selly-Modules/mongodb"
)
// SendOTPResult ...
type SendOTPResult struct {
Carrier string
Error int
ErrorCode int
MsgID string
Message string
Log string
}
// SendOTP to phone number
// Phone format: 84935123456
// Content must have "%s", for otp code substitution
func (s Service) SendOTP(phone, ip, contentFormat string) error {
// Generate otp code
otpCode := randomOTPCode()
// Format content
content := fmt.Sprintf(contentFormat, otpCode)
// Just remove char "+" if existed
strings.Replace(phone, "+", "", 1)
// Check that phone or ip is not over quota
canSend := s.checkCanSend(phone, ip)
if canSend {
return errors.New("ip or phone has reached over limited quota per day")
}
// Create payload
params := url.Values{}
params.Add("u", s.User)
params.Add("pwd", s.Password)
params.Add("from", s.From)
params.Add("json", "1")
params.Add("phone", phone)
params.Add("sms", content)
payload := strings.NewReader(params.Encode())
// Create request
client := s.Client
req, err := http.NewRequest(http.MethodPost, s.Endpoint, payload)
if err != nil {
return err
}
// Add necessary headers
req.Header.Add("Content-Type", "application/x-www-form-urlencoded")
// Call
res, err := client.Do(req)
if err != nil {
return err
}
// Make sure close body
defer res.Body.Close()
// Ready body
body, err := ioutil.ReadAll(res.Body)
rawResult := string(body)
fmt.Println(rawResult)
if err != nil {
fmt.Println("error : ", err.Error())
return err
}
var result SendOTPResult
if err = json.Unmarshal(body, &result); err != nil {
return err
}
go func() {
// Save log to db
log := Log{
ID: mongodb.NewObjectID(),
Carrier: result.Carrier,
Type: SMSTypeOTP,
Code: otpCode,
IsCodeValid: true,
PhoneNumber: phone,
IP: ip,
Content: content,
CreatedAt: now(),
Success: result.Error == 0,
Result: rawResult,
}
s.saveLog(log)
}()
return nil
}

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time.go Normal file
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package vietguys
import "time"
//
// NOTE: due to unique timezone in server's code, all using time will be convert to HCM timezone (UTC +7)
// All functions generate time, must be call util functions here
// WARNING: don't accept call time.Now() directly
//
const timezoneHCM = "Asia/Ho_Chi_Minh"
// getHCMLocation ...
func getHCMLocation() *time.Location {
l, _ := time.LoadLocation(timezoneHCM)
return l
}
// Now ...
func now() time.Time {
return time.Now().In(getHCMLocation())
}
// TimeBeforeNowInMin ...
func timeBeforeNowInMin(min int) time.Time {
return time.Now().Add(time.Minute * time.Duration(min) * -1).In(getHCMLocation())
}
// StartOfDate ...
func startOfDate(t time.Time) time.Time {
return time.Date(t.Year(), t.Month(), t.Day(), 0, 0, 0, 0, getHCMLocation())
}

11
verify_otp.go Normal file
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package vietguys
import "strings"
// VerifyOTP verify otp code is right or not
func (s Service) VerifyOTP(phone, otpCode string) bool {
// Just remove char "+" if existed
strings.Replace(phone, "+", "", 1)
return s.checkOTP(phone, otpCode)
}

78
vietguys.go Normal file
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package vietguys
import (
"context"
"errors"
"fmt"
"net/http"
"github.com/Selly-Modules/mongodb"
"go.mongodb.org/mongo-driver/mongo"
)
// MongoDBConfig ...
type MongoDBConfig struct {
Host, User, Password, DBName, Mechanism, Source string
}
// Config ...
type Config struct {
// Endpoint which will use to call api
Endpoint string
// For auth
User string
// For auth
Password string
// Brand name
From string
// MongoDB config, for save documents
MongoDB MongoDBConfig
// Limit send time per ip
IPMaxSendPerDay int
// Limit send time per phone number
PhoneMaxSendPerDay int
}
// Service ...
type Service struct {
Config
Client *http.Client
DB *mongo.Collection
}
var s *Service
var bgCtx = context.Background()
// NewInstance for using send sms method
func NewInstance(config Config) error {
if config.Endpoint == "" || config.User == "" || config.Password == "" || config.From == "" || config.MongoDB.Host == "" {
return errors.New("please provide all information that needed: endpoint, user, password, from, mongodb")
}
// Connect MongoDB
err := mongodb.Connect(
config.MongoDB.Host,
config.MongoDB.User,
config.MongoDB.Password,
config.MongoDB.DBName,
config.MongoDB.Mechanism,
config.MongoDB.Source,
)
if err != nil {
fmt.Println("Cannot init module VIETGUYS", err)
return err
}
s = &Service{
Config: config,
Client: &http.Client{},
DB: mongodb.GetInstance().Collection(logCollectionName),
}
return nil
}
// GetInstance ...
func GetInstance() *Service {
return s
}