feat: invitation accept screen and api

internal/domain/invite/inviteDomain.go

@@ -9,6 +9,8 @@ var ErrEmailHasAccount = errors.New("email already has an account")
 var ErrPendingInvite = errors.New("pending invite already exists")
 var ErrInviteNotFound = errors.New("invite not found")
 var ErrInviteEmailNotSent = errors.New("invite email not sent")
+var ErrInviteInvalid = errors.New("invite invalid")
+var ErrInviteExpired = errors.New("invite expired")
 
 const Lifetime = 3 * 24 * time.Hour
 

internal/domain/invite/inviteRepositoryInterface.go

@@ -1,7 +1,10 @@
 package invite
 
+import "time"
+
 type Repository interface {
 	Create(invite Invite) (Invite, error)
 	GetAll() []Invite
 	Delete(id uint32) error
+	MarkAccepted(id uint32, acceptedAt time.Time) error
 }

internal/domain/user/userDomain.go

@@ -14,6 +14,7 @@ var ErrAlreadyVerified = errors.New("user already verified")
 var ErrInvalidPasswordResetCode = errors.New("invalid password reset code")
 var ErrPasswordResetCodeExpired = errors.New("password reset code expired")
 var ErrInvalidDisplayName = errors.New("invalid display name")
+var ErrUsernameTaken = errors.New("username taken")
 
 type User struct {
 	ID                      uint32    `json:"id"`