/
validationkit.go
52 lines (42 loc) · 1.09 KB
/
validationkit.go
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package validationkit
import (
"log"
"math/rand"
"regexp"
"time"
)
const UsernameRegex string = `^@?(\w){1,15}$`
const EmailRegex = `(?i)^[_a-z0-9-]+(\.[_a-z0-9-]+)*@[a-z0-9-]+(\.[a-z0-9-]+)*(\.[a-z]{2,3})+$`
func CheckUsernameSyntax(username string) bool {
validationResult := false
r, err := regexp.Compile(UsernameRegex)
if err != nil {
log.Fatal(err)
}
validationResult = r.MatchString(username)
return validationResult
}
func CheckEmailSyntax(email string) bool {
validationResult := false
r, err := regexp.Compile(EmailRegex)
if err != nil {
log.Fatal(err)
}
validationResult = r.MatchString(email)
return validationResult
}
func GenerateRandomUsername() string {
rand.Seed(time.Now().UnixNano())
usernameLength := rand.Intn(15) + 1
var letterRunes = []rune("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_")
b := make([]rune, usernameLength)
for i := range b {
b[i] = letterRunes[rand.Intn(len(letterRunes))]
}
randomUsername := string(b)
zeroOrOne := rand.Intn(2)
if zeroOrOne == 1 {
randomUsername = "@" + randomUsername
}
return randomUsername
}