start register and login page

models/userModel.go

@@ -0,0 +1,84 @@
+package models
+
+import (
+	"math/rand"
+	"strings"
+	"time"
+
+	"go.mongodb.org/mongo-driver/bson/primitive"
+	"golang.org/x/crypto/bcrypt"
+)
+
+var (
+	lowerCharSet   = "abcdedfghijklmnopqrst"
+	upperCharSet   = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
+	specialCharSet = "!@#$%&*?,.`~"
+	numberSet      = "0123456789"
+	allCharSet     = lowerCharSet + upperCharSet + specialCharSet + numberSet
+)
+
+type User struct {
+	ID           primitive.ObjectID `bson:"_id"`
+	Username     string             `json:"username" validate:"required"`
+	Email        string             `json:"email" validate:"required"`
+	Password     string             `json:"-" validate:"min=10,max=32"`
+	TempPassword bool               `json:"temppassword"`
+	AccountType  string             `json:"accounttype"`
+	PhotoName    string             `json:"photoname"` // name of photo in db
+	Created_at   time.Time          `json:"created_at"`
+	Updated_at   time.Time          `json:"updated_at"`
+}
+
+func (u *User) HashPassword(password string) string {
+	hash, _ := bcrypt.GenerateFromPassword([]byte(password), 14)
+	return string(hash)
+}
+
+func (u *User) ComparePasswords(password string) bool {
+	err := bcrypt.CompareHashAndPassword([]byte(u.Password), []byte(password))
+	if err != nil {
+		return false
+	}
+	return true
+}
+
+func (u *User) CheckPasswordStrength(password string) bool {
+	if strings.ContainsAny(password, specialCharSet) && strings.ContainsAny(password, upperCharSet) && strings.ContainsAny(password, lowerCharSet) {
+		return true
+	} else {
+		return false
+	}
+}
+
+func (u *User) GeneratePassword(passwordLength, minSpecialChar, minNum, minUpperCase int) string {
+	var password strings.Builder
+
+	//Set special character
+	for i := 0; i < minSpecialChar; i++ {
+		random := rand.Intn(len(specialCharSet))
+		password.WriteString(string(specialCharSet[random]))
+	}
+
+	//Set numeric
+	for i := 0; i < minNum; i++ {
+		random := rand.Intn(len(numberSet))
+		password.WriteString(string(numberSet[random]))
+	}
+
+	//Set uppercase
+	for i := 0; i < minUpperCase; i++ {
+		random := rand.Intn(len(upperCharSet))
+		password.WriteString(string(upperCharSet[random]))
+	}
+
+	remainingLength := passwordLength - minSpecialChar - minNum - minUpperCase
+	for i := 0; i < remainingLength; i++ {
+		random := rand.Intn(len(allCharSet))
+		password.WriteString(string(allCharSet[random]))
+	}
+	inRune := []rune(password.String())
+	rand.Shuffle(len(inRune), func(i, j int) {
+		inRune[i], inRune[j] = inRune[j], inRune[i]
+	})
+	return string(inRune)
+}