package Ġtech . es per o . gr uber . full stack challenge . controller Ċ Ċ import Ġio . swagger . v 3 . o as . annotations . Operation Ċ import Ġorg . springframework . beans . factory . annotation . Autowired Ċ import Ġorg . springframework . http . HttpStatus Ċ import Ġorg . springframework . http . Response Entity Ċ import Ġorg . springframework . security . authentication . Authentication Manager Ċ import Ġorg . springframework . security . authentication . Bad Credentials Exception Ċ import Ġorg . springframework . security . authentication . Disabled Exception Ċ import Ġorg . springframework . security . authentication . Username Password Authentication Token Ċ import Ġorg . springframework . web . bind . annotation . RequestBody Ċ import Ġorg . springframework . web . bind . annotation . RequestMapping Ċ import Ġorg . springframework . web . bind . annotation . Request Method Ċ import Ġorg . springframework . web . bind . annotation . RestController Ċ import Ġtech . es per o . gr uber . full stack challenge . exceptions . Status Exception Ċ import Ġtech . es per o . gr uber . full stack challenge . security . Jwt Token Util Ċ import Ġtech . es per o . gr uber . full stack challenge . security . Jwt UserDetails Service Ċ Ċ /** Ċ Ġ* ĠRest Ġcontroller Ġhandling Ġthe ĠJWT - based Ġauthentication . Ċ Ġ*/ Ċ @ RestController Ċ class ĠAuth Controller Ġ{ ĊĠĠĠ Ġ@ Autowired ĊĠĠĠ Ġprivate Ġ Ġlateinit Ġvar Ġauthentication Manager : ĠAuthentication Manager ĊĊĠĠĠ Ġ@ Autowired ĊĠĠĠ Ġprivate Ġlateinit Ġvar Ġjwt Token Util : ĠJwt Token Util ĊĊĠĠĠ Ġ@ Autowired ĊĠĠĠ Ġprivate Ġlateinit Ġvar Ġuser Details Service : ĠJwt UserDetails Service ĊĊĠĠĠ Ġdata Ġclass ĠJwt Request ( val Ġusername : ĠString , Ġval Ġpassword : ĠString ) ĊĠĠĠ Ġdata Ġclass ĠJwt Response ( val Ġtoken : ĠString ) ĊĊĠĠĠ Ġ/** ĊĠĠĠĠ Ġ* ĠAuth entic ates Ġa Ġuser Ġby Ġusername Ġand Ġpassword . ĊĠĠĠĠ Ġ*/ ĊĠĠĠ Ġ@ Operation ( summary Ġ= Ġ" Auth entic ates Ġa Ġuser Ġby Ġusername Ġand Ġpassword .") ĊĠĠĠ Ġ@ RequestMapping ( value Ġ= Ġ["/ authenticate "], Ġmethod Ġ= Ġ[ Request Method . POST ]) ĊĠĠĠ Ġfun Ġcreate Authentication Token (@ RequestBody Ġauthentication Request : ĠJwt Request ): ĠResponseEntity < Jwt Response > Ġ{ ĊĠĠĠĠĠĠĠ Ġauthenticate ( authentication Request . username , Ġauthentication Request . password ) ĊĠĠĠĠĠĠĠ Ġval Ġuser Details Ġ= Ġuser Details Service . load User By Username ( authentication Request . username ) ĊĠĠĠĠĠĠĠ Ġval Ġtoken : ĠString Ġ= Ġjwt Token Util . generate Token ( user Details ) ĊĠĠĠĠĠĠĠ Ġreturn ĠResponseEntity . ok ( Jwt Response ( token )) ĊĠĠĠ Ġ} ĊĊĠĠĠ Ġ/** ĊĠĠĠĠ Ġ* ĠAuth entic ates Ġthe Ġuser ĊĠĠĠĠ Ġ*/ ĊĠĠĠ Ġprivate Ġfun Ġauthenticate ( username : ĠString , Ġpassword : ĠString ) Ġ{ ĊĠĠĠĠĠĠĠ Ġtry Ġ{ ĊĠĠĠĠĠĠĠĠĠĠĠ Ġauthentication Manager . authenticate ( Username Password Authentication Token ( username , Ġpassword )) ĊĠĠĠĠĠĠĠ Ġ} Ġcatch Ġ( e : ĠDisabled Exception ) Ġ{ ĊĠĠĠĠĠĠĠĠĠĠĠ Ġthrow ĠStatus Exception (" User Ġwas Ġdisabled ", ĠHttpStatus . FOR BID DEN ) ĊĠĠĠĠĠĠĠ Ġ} Ġcatch Ġ( e : ĠBad Credentials Exception ) Ġ{ ĊĠĠĠĠĠĠĠĠĠĠĠ Ġthrow ĠStatus Exception (" Invalid Ġusername Ġor Ġpassword ", ĠHttpStatus . FOR BID DEN ) ĊĠĠĠĠĠĠĠ Ġ} ĊĠĠĠ Ġ} Ċ } Ċ