diff --git a/.gitignore b/.gitignore index 66fd13c..bbfd2cb 100644 --- a/.gitignore +++ b/.gitignore @@ -13,3 +13,5 @@ # Dependency directories (remove the comment below to include it) # vendor/ + +.idea \ No newline at end of file diff --git a/README.md b/README.md index 3e9bdff..27b650b 100644 --- a/README.md +++ b/README.md @@ -1 +1 @@ -# vietguys \ No newline at end of file +# vietguys diff --git a/constant.go b/constant.go new file mode 100644 index 0000000..09f9393 --- /dev/null +++ b/constant.go @@ -0,0 +1,10 @@ +package vietguys + +// Constant +const ( + logCollectionName = "log_sms_vietguys" + + SMSTypeOTP = "otp" + + SellyOTPContent = "Selly - Ma xac nhan cua ban la %s" +) diff --git a/go.mod b/go.mod new file mode 100644 index 0000000..8b1a999 --- /dev/null +++ b/go.mod @@ -0,0 +1,8 @@ +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 +) diff --git 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/dev/null +++ b/helper.go @@ -0,0 +1,72 @@ +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 +} diff --git a/log.go b/log.go new file mode 100644 index 0000000..d13a7d9 --- /dev/null +++ b/log.go @@ -0,0 +1,33 @@ +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) + } +} diff --git a/random_otp.go b/random_otp.go new file mode 100644 index 0000000..a4d00e3 --- /dev/null +++ b/random_otp.go @@ -0,0 +1,30 @@ +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 +} diff --git a/send_otp.go b/send_otp.go new file mode 100644 index 0000000..1016951 --- /dev/null +++ b/send_otp.go @@ -0,0 +1,106 @@ +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 +} diff --git a/time.go b/time.go new file mode 100644 index 0000000..41035ba --- /dev/null +++ b/time.go @@ -0,0 +1,32 @@ +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()) +} diff --git a/verify_otp.go b/verify_otp.go new file mode 100644 index 0000000..83a0fae --- /dev/null +++ b/verify_otp.go @@ -0,0 +1,11 @@ +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) +} diff --git a/vietguys.go b/vietguys.go new file mode 100644 index 0000000..c7c580f --- /dev/null +++ b/vietguys.go @@ -0,0 +1,78 @@ +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 +}