package Ġme . h uf man . android aut oid rive . music . spotify Ċ Ċ import Ġandroid . util . Log Ċ import Ġcom . adam rat z man . spotify . Spot ify Exception Ċ import Ġcom . adam rat z man . spotify . models . Token Ċ import Ġme . h uf man . android aut oid rive . AppSettings Ċ import Ġme . h uf man . android aut oid rive . Mutable AppSettings Ċ import Ġnet . openid . app auth .* Ċ import Ġorg . json . JSONException Ċ import Ġjava . lang . Exception Ċ Ċ /** Ċ Ġ* ĠSpotify Ġmanager Ġfor Ġan Ġ[ Auth State ] Ġinstance Ġthat Ġis Ġcreated Ġfrom Ġand Ġmut ates Ġa ĠJSON Ġstored Ġ[ Auth State ] Ċ Ġ* Ġin Ġ[ AppSettings ]. ĠThis Ġclass Ġis Ġa Ġsingleton . Ċ Ġ*/ Ċ class ĠSpotify Auth StateManager Ġprivate Ġconstructor ( val Ġapp Settings : ĠMutable AppSettings ) Ġ{ Ċ ĉ comp anion Ġobject Ġ{ Ċĉ ĉ const Ġval ĠTAG Ġ= Ġ" Auth StateManager " ĊĊĉ ĉ private Ġvar Ġauth StateManager Instance : ĠSpotify Auth StateManager ? Ġ= Ġnull ĊĊĉ ĉ /** Ċĉĉ Ġ* ĠRetrieves Ġthe Ġcurrent Ġ[ Spot ify Auth StateManager ] Ġinstance , Ġcreating Ġone Ġif Ġit Ġthere Ġare Ġno Ċĉĉ Ġ* Ġcurrent Ġinstances . Ċĉĉ Ġ*/ Ċĉ ĉ fun ĠgetInstance ( app Settings : ĠMutable AppSettings ): ĠSpotify Auth StateManager Ġ{ Ċĉĉ ĉ if Ġ( auth StateManager Instance Ġ== Ġnull ) Ġ{ Ċĉĉĉ ĉ auth StateManager Instance Ġ= ĠSpotify Auth StateManager ( app Settings ) Ċĉĉ ĉ } Ċĉĉ ĉ return Ġauth StateManager Instance Ġas ĠSpotify Auth StateManager Ċĉ ĉ } Ċ ĉ } ĊĊ ĉ var Ġcurrent State : ĠAuth State ĊĊ ĉ init Ġ{ Ċĉ ĉ currentState Ġ= Ġread State () Ċ ĉ } ĊĊ ĉ /** Ċĉ Ġ* ĠReturns Ġthe Ġauthorization Ġcode Ġlast Ġsaved Ġto Ġthe Ġ[ Auth State ]. Ċĉ Ġ*/ Ċ ĉ fun Ġget Authorization Code (): ĠString ? Ġ{ Ċĉ ĉ return Ġcurrent State . last Authorization Response ?. authorization Code Ċ ĉ } ĊĊ ĉ /** Ċĉ Ġ* ĠReturns Ġthe Ġaccess Ġtoken Ġlast Ġsaved Ġto Ġthe Ġ[ Auth State ]. Ċĉ Ġ*/ Ċ ĉ fun Ġget AccessToken (): ĠString ? Ġ{ Ċĉ ĉ return Ġcurrent State . accessToken Ċ ĉ } ĊĊ ĉ /** Ċĉ Ġ* ĠReturns Ġthe Ġaccess Ġtoken Ġtime Ġremaining Ġbefore Ġit Ġis Ġexpired Ġfrom Ġwhat Ġwas Ġlast Ġsaved Ġto Ġthe Ċĉ Ġ* Ġ[ Auth State ]. Ċĉ Ġ*/ Ċ ĉ fun Ġget AccessToken Expiration In (): ĠLong Ġ{ Ċĉ ĉ return Ġcurrent State . accessToken Expiration Time ?. minus ( System . currentTimeMillis ()) ?. div ( 1 0 0 0 ) Ġ?: Ġ 0 Ċ ĉ } ĊĊ ĉ /** Ċĉ Ġ* ĠReturns Ġthe Ġrefresh Ġtoken Ġlast Ġsaved Ġto Ġthe Ġ[ Auth State ]. Ċĉ Ġ*/ Ċ ĉ fun Ġget RefreshToken (): ĠString ? Ġ{ Ċĉ ĉ return Ġcurrent State . refresh Token Ċ ĉ } ĊĊ ĉ /** Ċĉ Ġ* ĠReturns Ġa Ġcon solid ated Ġstring Ġof Ġall Ġthe Ġscopes Ġauthorized Ġin Ġthe Ġprevious Ġauthorization Ċĉ Ġ* Ġresponse Ġsaved Ġto Ġthe Ġ[ Auth State ]. Ċĉ Ġ*/ Ċ ĉ fun Ġget Scope String (): ĠString ? Ġ{ Ċĉ ĉ return Ġcurrent State . scope Ċ ĉ } ĊĊ ĉ /** Ċĉ Ġ* ĠReturns Ġthe Ġlast Ġ[ Authorization Service Configuration ] Ġsaved Ġto Ġthe Ġ[ Auth State ]. Ċĉ Ġ*/ Ċ ĉ fun Ġget Authorization Service Configuration (): ĠAuthorization Service Configuration ? Ġ{ Ċĉ ĉ return Ġcurrent State . authorization Service Configuration Ċ ĉ } ĊĊ ĉ /** Ċĉ Ġ* ĠReturns Ġif Ġthe Ġcurrent Ġ[ Auth State ] Ġis Ġauthorized . Ċĉ Ġ*/ Ċ ĉ fun Ġis Authorized (): ĠBoolean Ġ{ Ċĉ ĉ return Ġcurrent State . is Authorized Ċ ĉ } ĊĊ ĉ /** Ċĉ Ġ* ĠUpdates Ġthe Ġ[ Auth State ] Ġwith Ġthe Ġauthorization Ġresponse Ġand Ġauthorization Ġexception , Ġreplacing Ċĉ Ġ* Ġthe Ġold ĠAuth State Ġin Ġthe Ġshared Ġpreferences Ġfile Ġwith Ġthe Ġnew Ġone . Ċĉ Ġ*/ Ċ ĉ fun Ġupdate Authorization Response ( response : ĠAuthorization Response ?, Ġex : ĠAuthorization Exception ?) Ġ{ Ċĉ ĉ currentState . update ( response , Ġex ) Ċĉ ĉ write State ( currentState ) Ċ ĉ } ĊĊ ĉ /** Ċĉ Ġ* ĠUpdates Ġthe Ġ[ Auth State ] Ġwith Ġthe Ġprovided Ġ[ Token ], Ġreplacing Ġthe Ġold ĠAuth State Ġwith Ġthe Ġnew Ġone . Ċĉ Ġ*/ Ċ ĉ fun Ġupdate Token Response With Token ( token : ĠToken , ĠclientId : ĠString ) Ġ{ Ċĉ ĉ val Ġtoken Request Ġ= ĠToken Request . Builder ( get Authorization Service Configuration () !! , ĠclientId ) Ċĉĉĉ ĉ . set RefreshToken ( token . refresh Token ) Ċĉĉĉ ĉ . set Grant Type ( Grant Type Values . REFRESH _ TOKEN ) Ċĉĉĉ ĉ . build () Ċĉ ĉ val Ġtoken Response Ġ= ĠToken Response . Builder ( token Request ) Ċĉĉĉ ĉ . set AccessToken ( token . accessToken ) Ċĉĉĉ ĉ . set RefreshToken ( token . refresh Token ) Ċĉĉĉ ĉ . set AccessToken Expiration Time ( token . expires At ) Ċĉĉĉ ĉ . set Scopes ( token . scopes ?. map Ġ{ Ġit . uri Ġ}) Ċĉĉĉ ĉ . build () Ċĉ ĉ update Token Response ( token Response , Ġnull ) Ċ ĉ } ĊĊ ĉ /** Ċĉ Ġ* ĠUpdates Ġthe Ġ[ Auth State ] Ġlast Ġtoken Ġresponse Ġwith Ġan Ġ[ Authorization Exception ]. Ċĉ Ġ*/ Ċ ĉ fun Ġadd AccessToken Authorization Exception ( e : ĠException ) Ġ{ Ċĉ ĉ val Ġauthorization Exception Ġ= ĠAuthorization Exception ( Authorization Exception . TYPE _ O AUTH _ TOKEN _ ERROR , Ġ- 1 , Ġ" Access ĠToken ĠAuthentication ĠError ", Ġ" Authentication Ġfailed Ġwith Ġthe Ġmessage : Ġ${ e . message }", Ġnull , Ġe ) Ċĉ ĉ update Token Response ( null , Ġauthorization Exception ) Ċ ĉ } ĊĊ ĉ /** Ċĉ Ġ* ĠUpdates Ġthe Ġ[ Auth State ] Ġlast Ġauthorization Ġcode Ġresponse Ġwith Ġan Ġ[ Authorization Exception ]. Ċĉ Ġ*/ Ċ ĉ fun Ġadd Authorization Code Authorization Exception ( e : ĠSpotify Exception . Authentication Exception ) Ġ{ Ċĉ ĉ val Ġauthorization Exception Ġ= ĠAuthorization Exception ( Authorization Exception . TYPE _ O AUTH _ AUTHORIZATION _ ERROR , Ġ- 1 , Ġ" Authorization ĠCode ĠAuthentication ĠError ", Ġ" Authentication Ġfailed Ġwith Ġthe Ġmessage : Ġ${ e . message }", Ġnull , Ġe ) Ċĉ ĉ update Authorization Response ( null , Ġauthorization Exception ) Ċ ĉ } ĊĊ ĉ /** Ċĉ Ġ* ĠRe places Ġthe Ġcurrent Ġ[ Auth State ] Ġwith Ġthe Ġprovided Ġ[ Auth State ]. Ċĉ Ġ*/ Ċ ĉ fun Ġreplace Auth State ( auth State : ĠAuth State ) Ġ{ Ċĉ ĉ currentState Ġ= Ġauth State Ċĉ ĉ write State ( auth State ) Ċ ĉ } ĊĊ ĉ /** Ċĉ Ġ* ĠFor get Ġan Ġexisting Ġauth Ġsession Ċĉ Ġ*/ Ċ ĉ fun Ġclear () Ġ{ Ċĉ ĉ currentState Ġ= ĠAuth State () Ċĉ ĉ write State ( currentState ) Ċĉ ĉ // Ġsuppress Ġthe Ġnotification Ġpopup Ġfor Ġthe Ġfuture Ċĉ ĉ app Settings [ AppSettings . KEYS . SP OT IFY _ SHOW _ UN AUTHENT IC ATED _ NOTIFICATION ] Ġ= Ġ" false " Ċ ĉ } ĊĊ ĉ /** Ċĉ Ġ* ĠUpdates Ġthe Ġ[ Auth State ] Ġwith Ġthe Ġtoken Ġresponse Ġand Ġauthorization Ġexception , Ġreplacing Ġthe Ġold Ċĉ Ġ* ĠAuth State Ġwith Ġthe Ġnew Ġone . Ċĉ Ġ*/ Ċ ĉ private Ġfun Ġupdate Token Response ( response : ĠToken Response ?, Ġex : ĠAuthorization Exception ?) Ġ{ Ċĉ ĉ currentState . update ( response , Ġex ) Ċĉ ĉ write State ( currentState ) Ċ ĉ } ĊĊ ĉ /** Ċĉ Ġ* ĠWrites Ġthe Ġnew Ġ[ Auth State ] Ġto Ġ[ AppSettings . KEYS . SP OT IFY _ SHOW _ UN AUTHENT IC ATED _ NOTIFICATION ], Ċĉ Ġ* Ġreplacing Ġthe Ġexisting Ġ[ Auth State ] Ġwith Ġthe Ġnew Ġone . Ċĉ Ġ*/ Ċ ĉ private Ġfun Ġwrite State ( state : ĠAuth State ) Ġ{ Ċĉ ĉ Log . d ( TAG , Ġ" Writing Ġnew ĠAuth State Ġto Ġshared Ġprefs ") Ċĉ ĉ app Settings [ AppSettings . KEYS . SP OT IFY _ AUTH _ STATE _ JSON ] Ġ= Ġstate . json Serialize String () Ċ ĉ } ĊĊ ĉ /** Ċĉ Ġ* ĠReads Ġthe Ġexisting Ġ[ Auth State ] Ġfrom Ġ[ AppSettings . KEYS . SP OT IFY _ SHOW _ UN AUTHENT IC ATED _ NOTIFICATION ]. Ċĉ Ġ* ĠIf Ġthe Ġ[ Auth State ] Ġdoesn 't Ġexist Ġor Ġcan 't Ġbe Ġread Ġthen Ġan Ġempty Ġun authenticated Ġ[ Auth State ] Ġis Ċĉ Ġ* Ġreturned . Ċĉ Ġ*/ Ċ ĉ private Ġfun Ġread State (): ĠAuth State Ġ{ Ċĉ ĉ Log . d ( TAG , Ġ" Reading ĠAuth State Ġfrom Ġshared Ġprefs ") Ċĉ ĉ val Ġstr Json Ġ= Ġapp Settings [ AppSettings . KEYS . SP OT IFY _ AUTH _ STATE _ JSON ] Ċĉ ĉ if Ġ( str Json Ġ== Ġ"") Ġ{ Ċĉĉ ĉ return ĠAuth State () Ċĉ ĉ } Ċĉ ĉ return Ġtry Ġ{ Ċĉĉ ĉ Auth State . json Deserialize ( str Json ) Ċĉ ĉ } Ġcatch Ġ( ex : ĠJSON Exception ) Ġ{ Ċĉĉ ĉ Log . d ( TAG , Ġ" Failed Ġto Ġdeserialize Ġstored Ġauth Ġstate Ġ- Ġdiscard ing ") Ċĉĉ ĉ Auth State () Ċĉ ĉ } Ċ ĉ } Ċ }