package Ġde . r ki . cor on aw arn app . risk Ċ Ċ import Ġandroidx . annotation . Visible ForTesting Ċ import Ġcom . google . android . gms . near by . ex posure notification . Exposure Window Ċ import Ġdagger . Re usable Ċ import Ġde . r ki . cor on aw arn app . app config . AppConfig Provider Ċ import Ġde . r ki . cor on aw arn app . app config . Exposure Window Risk Calculation Config Ċ import Ġde . r ki . cor on aw arn app . risk . result . Exposure Window Day Risk Ċ import Ġde . r ki . cor on aw arn app . util . Time And Date Extensions . to LocalDate Utc Ċ import Ġkotlinx . coroutines . flow . first Ċ import Ġorg . joda . time . DateTime Zone Ċ import Ġorg . joda . time . Instant Ċ import Ġjavax . inject . Inject Ċ Ċ @ Re usable Ċ class ĠEx posure Windows Filter Ġ@ Inject Ġconstructor ( ĊĠĠĠ Ġprivate Ġval Ġapp Config Provider : ĠApp Config Provider , Ċ ) Ġ{ ĊĊĠĠĠ Ġinternal Ġfun Ġfilter By Age ( ĊĠĠĠĠĠĠĠ Ġconfig : ĠEx posure Window Risk Calculation Config , ĊĠĠĠĠĠĠĠ Ġlist : ĠList < Exposure Window >, ĊĠĠĠĠĠĠĠ Ġnow Utc : ĠInstant ĊĠĠĠ Ġ): ĠList < Exposure Window > Ġ= Ġlist . filter By Age ( ĊĠĠĠĠĠĠĠ Ġmax Age In Days Ġ= Ġconfig . max Encounter Age In Days , ĊĠĠĠĠĠĠĠ Ġnow Utc Ġ= Ġnow Utc ĊĠĠĠ Ġ) ĊĊĠĠĠ Ġinternal Ġsuspend Ġfun Ġfilter Day R is ks By Age ( ĊĠĠĠĠĠĠĠ Ġlist : ĠList < Exposure Window Day Risk >, ĊĠĠĠĠĠĠĠ Ġcalculated At : ĠInstant ĊĠĠĠ Ġ): ĠList < Exposure Window Day Risk > Ġ{ ĊĠĠĠĠĠĠĠ Ġval Ġconfig Ġ= Ġapp Config Provider . current Config . first () ĊĠĠĠĠĠĠĠ Ġval Ġdeadline Ġ= Ġconfig . get Deadline ( calculated At ). to LocalDate Utc () ĊĠĠĠĠĠĠĠ Ġreturn Ġlist . filter Ġ{ Ġew Day Risk Ġ-> ĊĠĠĠĠĠĠĠĠĠĠĠ Ġ! ew Day Risk . local Date Utc . is Before ( deadline ) ĊĠĠĠĠĠĠĠ Ġ} ĊĠĠĠ Ġ} ĊĊĠĠĠ Ġprivate Ġfun ĠEx posure Window Risk Calculation Config . get Deadline ( now Utc : ĠInstant ): ĠInstant Ġ= ĊĠĠĠĠĠĠĠ Ġnow Utc . minus Days ( max Encounter Age In Days ). to Instant () Ċ } Ċ Ċ @ Visible ForTesting Ċ internal Ġfun ĠList < Exposure Window >. filter By Age ( ĊĠĠĠ Ġmax Age In Days : ĠInt , ĊĠĠĠ Ġnow Utc : ĠInstant Ċ ): ĠList < Exposure Window > Ġ{ ĊĠĠĠ Ġval Ġdeadline Ġ= Ġnow Utc . minus Days ( max Age In Days ). millis ĊĠĠĠ Ġreturn Ġfilter Ġ{ ĊĠĠĠĠĠĠĠ Ġit . date Millis Since Epoch Ġ>= Ġdeadline ĊĠĠĠ Ġ} Ċ } Ċ Ċ private Ġfun ĠInstant . minus Days ( days : ĠInt ) Ġ= Ġto LocalDate Utc (). minus Days ( days ). to DateTime At Start OfDay ( DateTime Zone . UTC ) Ċ