package Ġhu . b me . aut . text analyzer auth . feature . registration . service Ċ Ċ import Ġhu . b me . aut . text analyzer auth . domain . Role Ċ import Ġhu . b me . aut . text analyzer auth . domain . User Ċ import Ġhu . b me . aut . text analyzer auth . exception . User AlreadyExists Exception Ċ import Ġhu . b me . aut . text analyzer auth . feature . registration . dto . Registration Request Ċ import Ġhu . b me . aut . text analyzer auth . feature . registration . dto . Registration Response Ċ import Ġhu . b me . aut . text analyzer auth . feature . registration . dto . to Registration Response Ċ import Ġhu . b me . aut . text analyzer auth . repository . UserRepository Ċ import Ġorg . springframework . security . crypto . password . Password Encoder Ċ import Ġorg . springframework . stereotype . Service Ċ Ċ @ Service Ċ class ĠRegistration ServiceImpl ( ĊĠĠĠĠĠĠĠ Ġval Ġpassword Encoder : ĠPassword Encoder , ĊĠĠĠĠĠĠĠ Ġval Ġuser Repository : ĠUser Repository Ċ ) Ġ: ĠRegistration Service Ġ{ ĊĊĠĠĠ Ġoverride Ġfun Ġregister ( registration Request : ĠRegistration Request ): ĠRegistration Response Ġ{ ĊĠĠĠĠĠĠĠ Ġcheck Email Exists ( registration Request . email ) ĊĠĠĠĠĠĠĠ Ġcheck Username Exists ( registration Request . username ) ĊĊĠĠĠĠĠĠĠ Ġval Ġuser Ġ= ĠUser ( ĊĠĠĠĠĠĠĠĠĠĠĠĠĠĠĠ Ġusername Ġ= Ġregistration Request . username , ĊĠĠĠĠĠĠĠĠĠĠĠĠĠĠĠ Ġemail Ġ= Ġregistration Request . email , ĊĠĠĠĠĠĠĠĠĠĠĠĠĠĠĠ Ġpassword Ġ= Ġpassword Encoder . encode ( registration Request . password ), ĊĠĠĠĠĠĠĠĠĠĠĠĠĠĠĠ Ġrole Ġ= ĠRole . USER ĊĠĠĠĠĠĠĠ Ġ) ĊĊĠĠĠĠĠĠĠ Ġreturn Ġuser Repository . save ( user ). to Registration Response () ĊĠĠĠ Ġ} ĊĊĠĠĠ Ġprivate Ġfun Ġcheck Email Exists ( email : ĠString ) Ġ{ ĊĠĠĠĠĠĠĠ Ġuser Repository . findBy Email ( email )?. let Ġ{ Ġthrow ĠUser AlreadyExists Exception ( email ) Ġ} ĊĠĠĠ Ġ} ĊĊĠĠĠ Ġprivate Ġfun Ġcheck Username Exists ( username : ĠString ) Ġ{ ĊĠĠĠĠĠĠĠ Ġuser Repository . findBy Username ( username )?. let Ġ{ Ġthrow ĠUser AlreadyExists Exception ( username ) Ġ} ĊĠĠĠ Ġ} Ċ } Ċ