feat: change email, export my data, delete account (with data anonymization)

internal/domain/user/userDomain.go

@@ -22,9 +22,16 @@ var ErrPasswordTooLong = errors.New("password too long")
 var ErrRoleChanged = errors.New("user role changed concurrently")
 var ErrInvalidTransfer = errors.New("invalid ownership transfer")
 var ErrConfirmationMismatch = errors.New("confirmation email does not match")
+var ErrWrongPassword = errors.New("wrong password")
+var ErrSameEmail = errors.New("new email is the current email")
+var ErrNoPendingEmailChange = errors.New("no pending email change")
+var ErrInvalidEmailChangeCode = errors.New("invalid email change code")
+var ErrEmailUnavailable = errors.New("email unavailable")
 
 const MaxLookupIDs = 100
 
+const EmailChangeLifetime = 2 * time.Hour
+
 const MaxPasswordBytes = 72
 
 func ValidatePassword(password string) error {
@@ -47,6 +54,9 @@ type User struct {
 	VerificationCode        string    `json:"verification_code"`
 	VerificationExpiration  time.Time `json:"verification_expiration"`
 	PasswordResetExpiration time.Time `json:"password_reset_expiration"`
+	PendingEmail            string    `json:"pending_email"`
+	EmailChangeCode         string    `json:"email_change_code"`
+	EmailChangeExpiration   time.Time `json:"email_change_expiration"`
 	TokenVersion            uint32    `json:"token_version"`
 	CreatedAt               time.Time `json:"created_at"`
 	UpdatedAt               time.Time `json:"updated_at"`