ch11.3

internal/models/users.go

@@ -2,7 +2,12 @@ package models
 
 import (
 	"database/sql"
+	"errors"
+	"strings"
 	"time"
+
+	"github.com/go-sql-driver/mysql"
+	"golang.org/x/crypto/bcrypt"
 )
 
 type User struct {
@@ -18,6 +23,24 @@ type UserModel struct {
 }
 
 func (m *UserModel) Insert(name, email, password string) error {
+	hashedPassword, err := bcrypt.GenerateFromPassword([]byte(password), 12)
+	if err != nil {
+		return err
+	}
+
+	stmt := `INSERT INTO users (name, email, hashed_password, created) 
+	VALUES(?, ?, ?, UTC_TIMESTAMP())`
+
+	_, err = m.DB.Exec(stmt, name, email, string(hashedPassword))
+	if err != nil {
+		var mySQLError *mysql.MySQLError
+		if errors.As(err, &mySQLError) {
+			if mySQLError.Number == 1062 && strings.Contains(mySQLError.Message, "users_uc_email") {
+				return ErrDuplicateEmail
+			}
+		}
+		return err
+	}
 	return nil
 }
 

internal/validator/validator.go

@@ -1,6 +1,7 @@
 package validator
 
 import (
+	"regexp"
 	"strings"
 	"unicode/utf8"
 )
@@ -44,3 +45,13 @@ func PermittedInt(value int, permittedValues ...int) bool {
 	}
 	return false
 }
+
+var EmailRX = regexp.MustCompile("^[a-zA-Z0-9.!#$%&'*+\\/=?^_`{|}~-]+@[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(?:\\.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)*$")
+
+func MinChars(value string, n int) bool {
+	return utf8.RuneCountInString(value) >= n
+}
+
+func Matches(value string, rx *regexp.Regexp) bool {
+	return rx.MatchString(value)
+}