cache hub proxy working

.vscode/launch.json

@@ -8,10 +8,10 @@
             "name": "Selector.Web",
             "type": "coreclr",
             "request": "launch",
-            "preLaunchTask": "build",
+            "preLaunchTask": "buildWeb",
             "program": "${workspaceFolder}/Selector.Web/bin/Debug/net5.0/Selector.Web.dll",
             "args": [],
-            "cwd": "${workspaceFolder}",
+            "cwd": "${workspaceFolder}/Selector.Web",
             "stopAtEntry": false,
             "serverReadyAction": {
                 "action": "openExternally",
@@ -29,7 +29,7 @@
             "name": "Selector.CLI",
             "type": "coreclr",
             "request": "launch",
-            "preLaunchTask": "build",
+            "preLaunchTask": "buildCLI",
             "program": "${workspaceFolder}/Selector.CLI/bin/Debug/net5.0/Selector.CLI.dll",
             "env": {
                 "DOTNET_ENVIRONMENT": "Development"

.vscode/tasks.json

@@ -2,7 +2,19 @@
     "version": "2.0.0",
     "tasks": [
         {
-            "label": "build",
+            "label": "buildWeb",
+            "command": "dotnet",
+            "type": "process",
+            "args": [
+                "build",
+                "${workspaceFolder}/Selector.Web/Selector.Web.csproj",
+                "/property:GenerateFullPaths=true",
+                "/consoleloggerparameters:NoSummary"
+            ],
+            "problemMatcher": "$msCompile"
+        },
+        {
+            "label": "buildCLI",
             "command": "dotnet",
             "type": "process",
             "args": [

Selector.Cache/Consumer/PublisherConsumer.cs

@@ -43,6 +43,7 @@ namespace Selector.Cache
 
             Logger.LogTrace($"Publishing current for [{e.Username}]");
             
+            // TODO: currently using spotify username for cache key, use db username
             var receivers = await Subscriber.PublishAsync(Key.CurrentlyPlaying(e.Username), payload);
 
             Logger.LogDebug($"Published current for [{e.Username}], {receivers} receivers");

Selector.Cache/DTO.cs

@@ -5,7 +5,7 @@ using SpotifyAPI.Web;
 namespace Selector.Cache {
 
     public class CurrentlyPlayingDTO {
-        public CurrentlyPlayingContext Context { get; set; }
+        public CurrentlyPlayingContextDTO Context { get; set; }
         public string Username { get; set; }
 
         public FullTrack Track { get; set; }
@@ -36,5 +36,38 @@ namespace Selector.Cache {
                 throw new ArgumentException("Unknown item item");
             }
         }
+
+        public override string ToString() => $"[{Username}] [{Context}]";
+    }
+
+    public class CurrentlyPlayingContextDTO
+    {
+        public Device Device { get; set; }
+        public string RepeatState { get; set; }
+        public bool ShuffleState { get; set; }
+        public Context Context { get; set; }
+        public long Timestamp { get; set; }
+        public int ProgressMs { get; set; }
+        public bool IsPlaying { get; set; }
+        
+        public string CurrentlyPlayingType { get; set; }
+        public Actions Actions { get; set; }
+
+        public static implicit operator CurrentlyPlayingContextDTO(CurrentlyPlayingContext context)
+        {
+            return new CurrentlyPlayingContextDTO {
+                Device = context.Device,
+                RepeatState = context.RepeatState,
+                ShuffleState = context.ShuffleState,
+                Context = context.Context,
+                Timestamp = context.Timestamp,
+                ProgressMs = context.ProgressMs,
+                IsPlaying = context.IsPlaying,
+                CurrentlyPlayingType = context.CurrentlyPlayingType,
+                Actions = context.Actions
+            };
+        }
+
+        public override string ToString() => $"{IsPlaying}, {Device?.DisplayString()}";
     }
 }

Selector.Web/Pages/Now.cs

@@ -35,7 +35,7 @@ namespace Selector.Web.Pages
 
         public void OnGet()
         {
-            HubProxy.FormMapping(MappingFactory.Get(UserManager.GetUserId(User)));
+            
         }
     }
 }

Selector.Web/Services/CacheHubProxy.cs

@@ -17,11 +17,11 @@ namespace Selector.Web.Service
     {
         private readonly ILogger<CacheHubProxy> Logger;
         private readonly ISubscriber Subscriber;
-        private readonly ServiceProvider Services;
+        private readonly IServiceProvider Services;
 
         public CacheHubProxy(ILogger<CacheHubProxy> logger,
             ISubscriber subscriber,
-            ServiceProvider services
+            IServiceProvider services
         )
         {
             Logger = logger;
@@ -35,37 +35,4 @@ namespace Selector.Web.Service
             mapping.ConstructMapping(Subscriber, context);
         }
     }
-
-    // public class CacheHubProxy<THub, T> 
-    //     where THub: Hub<T> 
-    //     where T: class
-    // {
-    //     private readonly ILogger<CacheHubProxy<THub, T>> Logger;
-    //     private readonly ISubscriber Subscriber;
-    //     private readonly IHubContext<THub, T> HubContext;
-    //     private readonly List<ICacheHubMapping<THub, T>> Mappings;
-
-    //     public CacheHubProxy(ILogger<CacheHubProxy<THub, T>> logger,
-    //         ISubscriber subscriber,
-    //         IHubContext<THub, T> hubContext,
-    //         IEnumerable<ICacheHubMapping<THub, T>> mappings 
-    //     )
-    //     {
-    //         Logger = logger;
-    //         Subscriber = subscriber;
-    //         HubContext = hubContext;
-    //         Mappings = mappings.ToList();
-    //     }
-
-    //     public void FormMapping(ICacheHubMapping<THub, T> mapping)
-    //     {
-    //         mapping.ConstructMapping(Subscriber, HubContext);
-    //     }
-
-    //     public void AddMapping(ICacheHubMapping<THub, T> mapping)
-    //     {
-    //         Mappings.Add(mapping);
-    //         FormMapping(mapping);
-    //     }
-    // }
 }

Selector.Web/Services/CacheHubProxyService.cs

@@ -1,6 +1,8 @@
 using System;
+using System.Collections.Generic;
 using System.Threading;
 using System.Threading.Tasks;
+using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Hosting;
 using Microsoft.Extensions.Logging;
 
@@ -10,19 +12,31 @@ namespace Selector.Web.Service
     {
         private readonly ILogger<CacheHubProxyService> Logger;
         private readonly CacheHubProxy Proxy;
+        private readonly IServiceScopeFactory ScopeFactory;
 
         public CacheHubProxyService(
             ILogger<CacheHubProxyService> logger,
-            CacheHubProxy proxy
+            CacheHubProxy proxy,
+            IServiceScopeFactory scopeFactory
         )
         {
             Logger = logger;
             Proxy = proxy;
+            ScopeFactory = scopeFactory;
         }
 
         public Task StartAsync(CancellationToken cancellationToken)
         {
             Logger.LogInformation("Starting cache hub proxy");
+
+            using(var scope = ScopeFactory.CreateScope())
+            {   
+                foreach(var mapping in scope.ServiceProvider.GetServices<IUserMapping>())
+                {
+                    mapping.FormAll();
+                }          
+            }
+
             return Task.CompletedTask;
         }
 

Selector.Web/Services/Mappings/NowPlayingMapping.cs

@@ -14,19 +14,32 @@ namespace Selector.Web.Service
 {
     public class NowPlayingMapping : ICacheHubMapping<NowPlayingHub, INowPlayingHubClient>
     {
+        private readonly ILogger<NowPlayingMapping> Logger;
         private readonly string UserId;
+        private readonly string Username;
 
-        public NowPlayingMapping(ILogger<NowPlayingMapping> logger, string userId)
+        public NowPlayingMapping(ILogger<NowPlayingMapping> logger, string userId, string username)
         {
+            Logger = logger;
             UserId = userId;
+            Username = username;
         }
 
         public async Task ConstructMapping(ISubscriber subscriber, IHubContext<NowPlayingHub, INowPlayingHubClient> hub)
         {
-            (await subscriber.SubscribeAsync(Key.CurrentlyPlaying(UserId))).OnMessage(async message => {
+            var key = Key.CurrentlyPlaying(Username);
+            (await subscriber.SubscribeAsync(key)).OnMessage(async message => {
                 
-                var deserialised = JsonSerializer.Deserialize<CurrentlyPlayingDTO>(message.ToString());
+                try{
+                    var trimmedMessage = message.ToString().Substring(key.Length + 1);
+                    var deserialised = JsonSerializer.Deserialize<CurrentlyPlayingDTO>(trimmedMessage);
+                    Logger.LogDebug($"Received new currently playing [{deserialised.Username}] [{deserialised.Username}]");
                     await hub.Clients.User(UserId).OnNewPlaying(deserialised);
+                }
+                catch(Exception e)
+                {
+                    Logger.LogError(e, $"Error parsing new currently playing [{message}]");
+                }
             });
         }
     }

Selector.Web/Services/Mappings/NowPlayingMappingFactory.cs

@@ -1,18 +1,22 @@
 using System;
-using System.Collections.Generic;
-using System.Text;
-using System.Threading.Tasks;
 using Microsoft.AspNetCore.SignalR;
 using Microsoft.Extensions.Logging;
-using Microsoft.Extensions.Logging.Abstractions;
+
-using SpotifyAPI.Web;
+using Selector.Web.Hubs;
 
 namespace Selector.Web.Service
 {
-    public interface INowPlayingMappingFactory {
+    public interface IUserMappingFactory<out TMap, THub, T>
-        public NowPlayingMapping Get(string userId);
+        where TMap : ICacheHubMapping<THub, T> 
+        where THub : Hub<T>
+        where T : class
+    {
+        public TMap Get(string userId, string username);
     }
 
+    public interface INowPlayingMappingFactory: IUserMappingFactory<NowPlayingMapping, NowPlayingHub, INowPlayingHubClient>
+    { }
+    
     public class NowPlayingMappingFactory : INowPlayingMappingFactory {
 
         private readonly ILoggerFactory LoggerFactory;
@@ -22,11 +26,12 @@ namespace Selector.Web.Service
             LoggerFactory = loggerFactory;
         }
 
-        public NowPlayingMapping Get(string userId)
+        public NowPlayingMapping Get(string userId, string username)
         {
             return new NowPlayingMapping(
                 LoggerFactory?.CreateLogger<NowPlayingMapping>(),
-                userId
+                userId,
+                username
             );
         }
     }

Selector.Web/Services/Mappings/UserMapping.cs

@@ -0,0 +1,37 @@
+using System;
+using System.Linq;
+
+using Selector.Model;
+
+namespace Selector.Web.Service
+{
+    public interface IUserMapping {
+        public void FormAll();
+    }
+
+    public class NowPlayingUserMapping: IUserMapping
+    {
+        private readonly ApplicationDbContext Db;
+        private readonly CacheHubProxy Proxy;
+        private readonly INowPlayingMappingFactory NowPlayingMappingFactory;
+
+        public NowPlayingUserMapping(
+            ApplicationDbContext db,
+            CacheHubProxy proxy,
+            INowPlayingMappingFactory nowPlayingMappingFactory
+        )
+        {
+            Db = db;
+            Proxy = proxy;
+            NowPlayingMappingFactory = nowPlayingMappingFactory;
+        }
+
+        public void FormAll()
+        {
+            foreach(var user in Db.Users)
+            {
+                Proxy.FormMapping(NowPlayingMappingFactory.Get(user.Id, user.UserName));
+            }
+        }
+    }
+}

Selector.Web/Startup.cs

@@ -117,9 +117,11 @@ namespace Selector.Web
                 services.AddTransient<ISubscriber>(services => services.GetService<ConnectionMultiplexer>().GetSubscriber());
             }
 
-            // HOSTED
             services.AddSingleton<CacheHubProxy>();
-            services.AddSingleton<INowPlayingMappingFactory, NowPlayingMappingFactory>();
+            services.AddHostedService<CacheHubProxyService>();
+
+            services.AddTransient<INowPlayingMappingFactory, NowPlayingMappingFactory>();
+            services.AddScoped<IUserMapping, NowPlayingUserMapping>();
         }
 
         // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.

Selector.Web/scripts/HubInterfaces.ts

@@ -1,6 +1,25 @@
 
+export interface SignalR {  
+    nowPlayingHub: nowPlayingProxy;
+}
+export interface nowPlayingProxy {  
+    client: NowPlayingHubClient;
+    server: NowPlayingHub;
+}
+
+export interface NowPlayingHubClient {
+    OnNewPlaying: (context: CurrentlyPlayingDTO) => void;
+}
+
 export interface NowPlayingHub {
+    SendNewPlaying(context: CurrentlyPlayingDTO): void;
+}
 
+export interface CurrentlyPlayingDTO {
+    context: CurrentlyPlayingContextDTO;
+    username: string;
+    track: FullTrack;
+    episode: FullEpisode;
 }
 
 export interface ListeningChangeEventArgs {
@@ -9,6 +28,18 @@ export interface ListeningChangeEventArgs {
     username: string;
 }
 
+export interface CurrentlyPlayingContextDTO {
+    device: Device;
+    repeatState: string;
+    shuffleState: boolean;
+    context: Context;
+    timestamp: number;
+    progressMs: number;
+    isPlaying: boolean;
+    currentlyPlayingType: string;
+    actions: Actions;
+}
+
 export interface CurrentlyPlayingContext {
     device: Device;
     repeatState: string;

Selector.Web/scripts/now.ts

@@ -1,11 +1,11 @@
 import * as signalR from "@microsoft/signalr";
-import { FullTrack } from "./HubInterfaces";
+import { FullTrack, CurrentlyPlayingDTO } from "./HubInterfaces";
 
 const connection = new signalR.HubConnectionBuilder()
     .withUrl("/hub")
     .build();
 
-connection.on("OnNewPlaying", context => console.log(context));
+connection.on("OnNewPlaying", (context: CurrentlyPlayingDTO) => console.log(context));
 
 connection.start().catch(err => console.error(err));