import { Room , Client , PatchListener , ITrackerParams , IJsonPatch } from "../internal" ; interface IRelayRoomPlayer { data : any ; connected : boolean ; } interface IRelayRoomState { players : { [ id ] : IRelayRoomPlayer ; } ; [ key ] : any ; } export class RelayRoom extends Room { public maxPlayers ! : number ; public reconnectionTimeout ! : number ; public state ! : IRelayRoomState ; public listeners ! : Map < string , PatchListener < any > > ; public createState ( ) { return this . state ; } public createPatchTracker ( ) { return { onPatch : ( listener , params ) => { const { clientId } = params ; this . listeners . set ( clientId , listener ) ; return ( ) => { this . listeners . delete ( clientId ) ; } ; } , snapshot : ( ) => this . state , dispose : ( ) => this . listeners . clear ( ) , decodeMap : ( ) => { } , } ; } public startTracking ( client , params ? ) { super . startTracking ( client , { ... params , clientId : client . id } ) ; } public onCreate ( params ) { this . listeners = new Map < string , PatchListener < any > > ( ) ; const state = params && params . state || { } ; this . state = { ... state , players : { } } ; this . data = params && params . data || { } ; this . reconnectionTimeout = params && params . reconnectionTimeout ; this . maxPlayers = params && params . maxPlayers || Infinity ; } public onJoin ( client , params ) { this . addPlayer ( client , params ) ; client . send ( "room_state" , this . state ) ; this . broadcast ( "player_join" , client . id , client . id ) ; if ( this . clients . size >= this . maxPlayers && ! this . locked ) { this . lock ( ) ; } } public onMessage ( client , type , data ) { try { switch ( type ) { case "patch_state" : return this . patchState ( client , data ) ; case "update_room" : return this . updateRoom ( client , data ) ; case "private_message" : return this . sendMessage ( client , data ) ; } this . broadcast ( type , data , client . id ) ; } catch ( error ) { client . send ( "error" , error ) ; } } public async onLeave ( client , consented ? ) { if ( ! consented && this . reconnectionTimeout ) { this . setPlayerConection ( client , false ) ; try { await this . waitReconnection ( client , this . reconnectionTimeout ) ; this . setPlayerConection ( client , true ) ; return ; } catch ( e ) { } } this . removePlayer ( client ) ; this . broadcast ( "player_leave" , client . id , client . id ) ; } public onClose ( ) { this . broadcast ( "room_close" , this . id ) ; } public patchState ( client , patch ) { const path = patch . path . substr ( 1 ) . split ( "/" ) ; const key = path . pop ( ) as any ; let obj = this . state as any ; path . forEach ( ( id ) => { if ( ! obj [ id ] ) { obj [ id ] = + id ? [ ] : { } ; } obj = obj [ id ] ; } ) ; switch ( patch . op ) { case "add" : case "replace" : if ( Array . isArray ( obj ) && + key ) { obj . splice ( + key , 0 , patch . value ) ; } else { obj [ key ] = patch . value ; } break ; case "remove" : if ( Array . isArray ( obj ) && + key ) { obj . splice ( + key , 1 ) ; } else { delete obj [ key ] ; } break ; } this . listeners . forEach ( ( listener , clientId ) => { if ( clientId === client . id ) { return ; } listener ( patch , obj , this . state ) ; } ) ; } public updateRoom ( client , update ) { if ( client . id !== this . hostId ) { return ; } switch ( update . type ) { case "locked" : if ( update . value !== this . locked ) { this . locked = ! ! update . value ; this . updateCache ( ) ; } break ; case "data" : { this . data = update . value || { } ; this . updateCache ( ) ; } } this . broadcast ( "update_room" , update , client . id ) ; } public sendMessage ( client , data ) { const to = this . clients . get ( data . clientId ) ; if ( ! to ) { return ; } to . send ( "private_message" , { from : client . id , message : data . message } ) ; } public broadcastPatch ( client , patch ) { this . listeners . forEach ( ( listener , clientId ) => { if ( clientId === client . id ) { return ; } listener ( patch ) ; } ) ; } public addPlayer ( client , params = { } ) { const player = { connected : true , ... params , } ; if ( ! this . state . players ) { this . state . players = { } ; } this . state . players [ client . id ] = player ; this . broadcastPatch ( client , { op : "add" , path : "/players/" + client . id , value : player , } ) ; } public removePlayer ( client ) { if ( ! this . state . players ) { return ; } delete this . state . players [ client . id ] ; this . broadcastPatch ( client , { op : "remove" , path : "/players/" + client . id , } ) ; } public setPlayerConection ( client , value ) { const player = this . state . players && this . state . players [ client . id ] ; if ( ! player || player . connected === value ) { return ; } player . connected = value ; this . broadcastPatch ( client , { op : "replace" , path : "/players/" + client . id + "/connected" , value , } ) ; } }