Rishi Maharaj
98 lines
1.7 KiB
Go
98 lines
1.7 KiB
Go
package entity
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import (
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"time"
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"golang.org/x/crypto/bcrypt"
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)
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//User data
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type User struct {
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ID ID
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Email string
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Password string
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FirstName string
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LastName string
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CreatedAt time.Time
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UpdatedAt time.Time
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Books []ID
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}
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//NewUser create a new user
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func NewUser(email, password, firstName, lastName string) (*User, error) {
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u := &User{
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ID: NewID(),
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Email: email,
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FirstName: firstName,
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LastName: lastName,
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CreatedAt: time.Now(),
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}
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pwd, err := generatePassword(password)
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if err != nil {
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return nil, err
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}
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u.Password = pwd
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err = u.Validate()
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if err != nil {
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return nil, ErrInvalidEntity
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}
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return u, nil
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}
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//AddBook add a book
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func (u *User) AddBook(id ID) error {
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_, err := u.GetBook(id)
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if err == nil {
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return ErrBookAlreadyBorrowed
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}
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u.Books = append(u.Books, id)
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return nil
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}
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//RemoveBook remove a book
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func (u *User) RemoveBook(id ID) error {
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for i, j := range u.Books {
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if j == id {
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u.Books = append(u.Books[:i], u.Books[i+1:]...)
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return nil
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}
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}
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return ErrNotFound
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}
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//GetBook get a book
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func (u *User) GetBook(id ID) (ID, error) {
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for _, v := range u.Books {
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if v == id {
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return id, nil
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}
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}
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return id, ErrNotFound
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}
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//Validate validate data
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func (u *User) Validate() error {
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if u.Email == "" || u.FirstName == "" || u.LastName == "" {
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return ErrInvalidEntity
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}
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return nil
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}
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//ValidatePassword validate user password
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func (u *User) ValidatePassword(p string) error {
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err := bcrypt.CompareHashAndPassword([]byte(u.Password), []byte(p))
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if err != nil {
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return err
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}
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return nil
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}
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func generatePassword(raw string) (string, error) {
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hash, err := bcrypt.GenerateFromPassword([]byte(raw), 10)
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if err != nil {
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return "", err
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}
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return string(hash), nil
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}
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