Refined the design a bit

src/backend/server/Todo/Todo.Api/Controllers/TodosController.cs

@@ -16,20 +16,16 @@ public class TodosController : ControllerBase
     }
 
     [HttpPost]
-    public async Task<ActionResult<Core.Entities.Todo>> CreateTodo([FromBody] CreateTodoRequest request)
-    {
-        var todo = await _todoRepository.CreateTodoAsync(request.Title);
-
-        return Ok(todo);
-    }
+    public async Task<ActionResult<Core.Entities.Todo>> CreateTodo([FromBody] CreateTodoRequest request) =>
+        Ok(await _todoRepository.CreateTodoAsync(request.Title));
 
     [HttpGet]
-    public async Task<ActionResult<IEnumerable<Core.Entities.Todo>>> GetTodos()
-    {
-        var todos = await _todoRepository.GetTodosAsync();
+    public async Task<ActionResult<IEnumerable<Core.Entities.Todo>>> GetTodos() =>
+        Ok(await _todoRepository.GetTodosAsync());
 
-        return Ok(todos);
-    }
+    [HttpGet]
+    public async Task<ActionResult<IEnumerable<Core.Entities.Todo>>> GetNotDoneTodos() =>
+        Ok(await _todoRepository.GetNotDoneTodos());
 
     public record CreateTodoRequest
     {

src/backend/server/Todo/Todo.Api/Hubs/TodoHub.cs

@@ -18,26 +18,26 @@ namespace Todo.Api.Hubs
         {
             var _ = await _todoRepository.CreateTodoAsync(todoTitle);
 
-            var todos = await _todoRepository.GetTodosAsync();
+            var todos = await _todoRepository.GetNotDoneTodos();
             var serializedTodos =
                 JsonSerializer.Serialize(todos
                     .Select(t => new TodoResponse { Id = t.Id, Title = t.Title })
                     .ToList());
 
-            await Clients.Caller.SendAsync("todos", serializedTodos);
+            await Clients.Caller.SendAsync("getInboxTodos", serializedTodos);
         }
 
         public async Task UpdateTodo(string todoId, bool todoStatus)
         {
             await _todoRepository.UpdateTodoStatus(todoId, todoStatus);
 
-            var todos = await _todoRepository.GetTodosAsync();
+            var todos = await _todoRepository.GetNotDoneTodos();
             var serializedTodos =
                 JsonSerializer.Serialize(todos
                     .Select(t => new TodoResponse { Id = t.Id, Title = t.Title, Status = t.Status })
                     .ToList());
 
-            await Clients.Caller.SendAsync("todos", serializedTodos);
+            await Clients.Caller.SendAsync("getInboxTodos", serializedTodos);
         }
 
         public async Task GetTodos()
@@ -49,5 +49,16 @@ namespace Todo.Api.Hubs
 
             await Clients.Caller.SendAsync("todos", serializedTodos);
         }
+
+
+        public async Task GetInboxTodos()
+        {
+            var todos = await _todoRepository.GetNotDoneTodos();
+            var serializedTodos = JsonSerializer.Serialize(todos
+                .Select(t => new TodoResponse { Id = t.Id, Title = t.Title, Status = t.Status })
+                .ToList());
+
+            await Clients.Caller.SendAsync("getInboxTodos", serializedTodos);
+        }
     }
 }

src/backend/server/Todo/Todo.Core/Interfaces/Persistence/ITodoRepository.cs

@@ -5,4 +5,5 @@ public interface ITodoRepository
     Task<Entities.Todo> CreateTodoAsync(string title);
     Task<IEnumerable<Entities.Todo>> GetTodosAsync();
     Task UpdateTodoStatus(string todoId, bool todoStatus);
+    Task<IEnumerable<Entities.Todo>> GetNotDoneTodos();
 }

src/backend/server/Todo/Todo.Persistence/Mongo/Repositories/TodoRepository.cs

@@ -20,7 +20,7 @@ public class TodoRepository : ITodoRepository
     {
         var todo = new MongoTodo() { Title = title };
         await _todosCollection.InsertOneAsync(todo);
-        return new Core.Entities.Todo() { Id = todo.Id, Title = todo.Title };
+        return new Core.Entities.Todo() { Id = todo.Id, Title = todo.Title, Status = false};
     }
 
     public async Task<IEnumerable<Core.Entities.Todo>> GetTodosAsync()
@@ -38,4 +38,10 @@ public class TodoRepository : ITodoRepository
             .UpdateOneAsync(t => t.Id == todoId,
             Builders<MongoTodo>.Update.Set(t => t.Status, todoStatus));
     }
+
+    public async Task<IEnumerable<Core.Entities.Todo>> GetNotDoneTodos()
+    {
+        var todos = await GetTodosAsync();
+        return todos.Where(t => t.Status == false);
+    }
 }

src/client/.idea/runConfigurations/dev.xml

@@ -0,0 +1,13 @@
+<component name="ProjectRunConfigurationManager">
+  <configuration default="false" name="dev" type="js.build_tools.npm" nameIsGenerated="true">
+    <package-json value="$PROJECT_DIR$/package.json" />
+    <command value="run" />
+    <scripts>
+      <script value="dev" />
+    </scripts>
+    <node-interpreter value="project" />
+    <package-manager value="yarn" />
+    <envs />
+    <method v="2" />
+  </configuration>
+</component>

src/client/src/components/todos/addTodo.tsx

@@ -2,9 +2,11 @@ import { useState } from "react";
 import { CollapsedAddTodo } from "@src/components/todos/collapsed/collapsedAddTodo";
 import { AddTodoForm } from "@src/components/todos/collapsed/addTodoForm";
 import { CollapsedState } from "@src/components/todos/collapsed/collapsedState";
-import {HubConnection} from "@microsoft/signalr";
+import { useCreateTodo } from "@src/presentation/hooks/socketHooks";
+
+export function AddTodo(props: {}) {
+  const { createTodo } = useCreateTodo();
 
-export function AddTodo(props: {conn: HubConnection}) {
   const [collapsed, setCollapsed] = useState<CollapsedState>(
     CollapsedState.collapsed
   );
@@ -20,7 +22,7 @@ export function AddTodo(props: {conn: HubConnection}) {
   return (
     <AddTodoForm
       onAdd={(todoName) => {
-        props.conn.invoke("CreateTodo", todoName).catch(console.error)
+        createTodo(todoName);
       }}
       onClose={() => setCollapsed(CollapsedState.collapsed)}
     />

src/client/src/components/todos/collapsed/addTodoForm.tsx

@@ -7,29 +7,44 @@ export const AddTodoForm: FC<{
   const [todoName, setTodoName] = useState("");
 
   return (
-    <div className="p-2 space-y-1">
-      <div className="todo-input-form py-2 px-4 bg-gray-900 border border-gray-600">
+    <form
+      onSubmit={(e) => {
+        e.preventDefault();
+        onAdd(todoName);
+        setTodoName("");
+      }}
+    >
+      <div className="py-2 space-y-3">
+        <div className="todo-input-form py-2 px-4 bg-gray-800 border border-gray-500 rounded-lg">
           <input
             type="text"
             placeholder="Todo name"
             className="text-sm"
+            autoFocus
             value={todoName}
+            tabIndex={1}
             onChange={(e) => setTodoName(e.target.value)}
           />
         </div>
         <div className="space-x-2">
           <button
+            type="submit"
+            tabIndex={2}
             disabled={!todoName}
-          onClick={() => {
-            onAdd(todoName);
-            setTodoName("");
-          }}
-          className="disabled:text-gray-800 transition"
+            className="base-button dark:bg-accent-500 disabled:bg-accent-800 active:bg-accent-400"
           >
             Add todo
           </button>
-        <button onClick={onClose}>Cancel</button>
+          <button
+            tabIndex={3}
+            type="button"
+            className="base-button"
+            onClick={onClose}
+          >
+            Cancel
+          </button>
         </div>
       </div>
+    </form>
   );
 };

src/client/src/components/todos/collapsed/collapsedAddTodo.tsx

@@ -1,5 +1,12 @@
 import { FC } from "react";
 
 export const CollapsedAddTodo: FC<{ onClick: () => void }> = ({ onClick }) => {
-  return <div onClick={onClick}>Add todo</div>;
+  return (
+    <div
+      className="cursor-pointer select-none dark:text-gray-400"
+      onClick={onClick}
+    >
+      Add todo
+    </div>
+  );
 };

src/client/src/components/todos/todoCheckmark.tsx

@@ -11,7 +11,7 @@ export const TodoCheckmark: FC<TodoCheckmarkProps> = (props) => (
     onClick={() =>
       props.updateTodo({ ...props.todo, status: !props.todo.status })
     }
-    className={`h-5 w-5 rounded-full border dark:border-gray-700  ${
+    className={`h-5 w-5 rounded-full border dark:border-gray-500  ${
       props.todo.status === StatusState.done
         ? "dark:bg-gray-700"
         : "hover:dark:bg-gray-600"

src/client/src/components/todos/todoItem.tsx

@@ -8,7 +8,7 @@ interface TodoItemProps {
 }
 
 export const TodoItem: FC<TodoItemProps> = (props) => (
-  <div className="py-3 border-b border-gray-300 dark:border-gray-700">
+  <div className="py-3 border-b border-gray-300 dark:border-gray-600">
     <div className="flex items-center space-x-4">
       <TodoCheckmark {...props} />
       <span className="pb-1">{props.todo.title}</span>

src/client/src/components/todos/todoList.tsx

@@ -1,24 +1,28 @@
 import { Todo } from "@src/core/entities/todo";
 import { TodoItem } from "@src/components/todos/todoItem";
 import { AddTodo } from "@src/components/todos/addTodo";
-import { HubConnection } from "@microsoft/signalr";
+import { useUpdateTodoState } from "@src/presentation/hooks/socketHooks";
 
-export const TodoList = (props: { todos: Todo[]; conn: HubConnection }) => (
+export const TodoList = (props: { todos: Todo[]; hideDone: boolean }) => {
+  const { updateTodoState } = useUpdateTodoState();
+
+  return (
     <>
       <ul id="inbox">
-      {props.todos.map((t, i) => (
+        {props.todos
+          .filter((t) => t.status == false)
+          .map((t, i) => (
             <li key={i}>
               <TodoItem
                 todo={t}
                 updateTodo={(todo) => {
-              props.conn
-                .invoke("UpdateTodo", todo.id, todo.status)
-                .catch(console.error);
+                  updateTodoState(todo.id, todo.status);
                 }}
               />
             </li>
           ))}
       </ul>
-    <AddTodo conn={props.conn} />
+      <AddTodo />
     </>
   );
+};

src/client/src/core/entities/todo.tsx

@@ -1,6 +1,6 @@
 type NotDone = false;
 type Done = true;
-type StatusState = NotDone | Done;
+export type StatusState = NotDone | Done;
 export const StatusState: { done: Done; notDone: NotDone } = {
   done: true,
   notDone: false,
@@ -11,3 +11,19 @@ export interface Todo {
   title: string;
   status: StatusState;
 }
+
+export const asTodo = (item: Todo): Todo => {
+  if (!item.id) {
+    throw new Error("Validation failed: id is null");
+  }
+
+  if (!item.title) {
+    throw new Error("Validation failed: title is null");
+  }
+
+  if (!!item.status) {
+    throw new Error("Validation failed: status is null");
+  }
+
+  return item;
+};

src/client/src/pages/_app.tsx

@@ -1,9 +1,11 @@
 import { AppProps } from "next/app";
 
 import "@src/styles/tailwind.css";
+import SocketProvider from "@src/presentation/contexts/SocketContext";
 
 const MyApp = ({ Component, pageProps }: AppProps) => (
+  <SocketProvider>
     <Component {...pageProps} />
+  </SocketProvider>
 );
-
 export default MyApp;

src/client/src/pages/index.tsx

@@ -1,34 +1,15 @@
-import { useEffect, useState } from "react";
 import { PageHeading } from "@src/components/common/headings/pageHeading";
 import { TodoList } from "@src/components/todos";
-import * as signalR from "@microsoft/signalr";
-import { HubConnection } from "@microsoft/signalr";
-import { Todo } from "@src/core/entities/todo";
+import { useSelectInboxTodos } from "@src/presentation/hooks/socketHooks";
 
 const HomePage = () => {
-  const [conn, setConn] = useState<HubConnection>();
-  const [todos, setTodos] = useState<Todo[]>([]);
-
-  useEffect(() => {
-    const connection = new signalR.HubConnectionBuilder()
-      .withUrl("http://localhost:5000/hubs/todo")
-      .build();
-
-    connection.on("todos", (todos) => {
-      const parsedTodos = JSON.parse(todos);
-      setTodos(parsedTodos);
-    });
-
-    connection.start().then(() => connection.invoke("GetTodos"));
-
-    setConn(connection);
-  }, []);
+  const { todos, loading } = useSelectInboxTodos();
 
   return (
     <main className="py-8 px-14 space-y-6">
-      <section className="space-y-2">
+      <section className="space-y-2 mx-auto max-w-4xl">
         <PageHeading title="Inbox" />
-        <TodoList todos={todos} conn={conn} />
+        <TodoList todos={loading ? [] : todos} hideDone />
       </section>
     </main>
   );

src/client/src/presentation/contexts/SocketContext.tsx

@@ -0,0 +1,85 @@
+import { createContext, FC, useEffect, useState } from "react";
+import {
+  HubConnection,
+  HubConnectionBuilder,
+  LogLevel,
+} from "@microsoft/signalr";
+import { asTodo, StatusState, Todo } from "@src/core/entities/todo";
+
+interface SocketContextProps {
+  conn: HubConnection;
+  todos: Todo[];
+  inboxTodos: Todo[];
+  getTodos: () => void;
+  getInboxTodos: () => void;
+  createTodo: (todoName: string) => void;
+  updateTodo: (todoId: string, todoStatus: StatusState) => void;
+}
+
+export const SocketContext = createContext<SocketContextProps>({
+  conn: void 0,
+  todos: [],
+  inboxTodos: [],
+  getTodos: () => {},
+  getInboxTodos: () => {},
+  createTodo: (todoName) => {},
+  updateTodo: (todoId, todoStatus) => {},
+});
+
+export const SocketProvider: FC = (props) => {
+  const [conn, setConn] = useState<HubConnection>();
+  const [todos, setTodos] = useState<Todo[]>([]);
+  const [inboxTodos, setInboxTodos] = useState<Todo[]>([]);
+
+  useEffect(() => {
+    const connection = new HubConnectionBuilder()
+      .withUrl("http://localhost:5000/hubs/todo")
+      .withAutomaticReconnect()
+      .configureLogging(LogLevel.Information)
+      .build();
+
+    connection.on("getTodos", (rawTodos) => {
+      const newTodos = JSON.parse(rawTodos) as Todo[];
+      const validatedTodos = newTodos.map(asTodo);
+      setTodos(validatedTodos);
+    });
+
+    connection.on("getInboxTodos", (rawTodos) => {
+      const newTodos = JSON.parse(rawTodos) as Todo[];
+      const validatedTodos = newTodos
+        .map(asTodo)
+        .filter((t) => t.status == false);
+      setInboxTodos(validatedTodos);
+    });
+
+    connection.start().then(() => {
+      setConn(connection);
+    });
+  }, []);
+
+  return (
+    <SocketContext.Provider
+      value={{
+        conn,
+        todos,
+        inboxTodos,
+        getTodos: () => {
+          conn.invoke("GetTodos").catch(console.error);
+        },
+        getInboxTodos: () => {
+          conn.invoke("GetInboxTodos").catch(console.error);
+        },
+        createTodo: (todoName) => {
+          conn.invoke("CreateTodo", todoName).catch(console.error);
+        },
+        updateTodo: (todoId, todoStatus) => {
+          conn.invoke("UpdateTodo", todoId, todoStatus).catch(console.error);
+        },
+      }}
+    >
+      {conn ? props.children : "loading"}
+    </SocketContext.Provider>
+  );
+};
+
+export default SocketProvider;

src/client/src/presentation/hooks/socketHooks.tsx

@@ -0,0 +1,36 @@
+import { useContext, useEffect } from "react";
+import { SocketContext } from "@src/presentation/contexts/SocketContext";
+import { StatusState } from "@src/core/entities/todo";
+
+export const useSelectInboxTodos = () => {
+  const socketContext = useContext(SocketContext);
+
+  useEffect(() => {
+    socketContext.getInboxTodos();
+  }, []);
+
+  return {
+    loading: false,
+    todos: socketContext.inboxTodos,
+  };
+};
+
+export const useCreateTodo = () => {
+  const socketContext = useContext(SocketContext);
+
+  return {
+    createTodo: (todoName: string) => {
+      socketContext.createTodo(todoName);
+    },
+  };
+};
+
+export const useUpdateTodoState = () => {
+  const socketContext = useContext(SocketContext);
+
+  return {
+    updateTodoState: (todoId: string, todoState: StatusState) => {
+      socketContext.updateTodo(todoId, todoState);
+    },
+  };
+};

src/client/src/styles/tailwind.css

@@ -2,7 +2,7 @@
 @tailwind components;
 
 input {
-    @apply shadow-none placeholder-gray-300 dark:placeholder-gray-700 border-none outline-none;
+    @apply shadow-none placeholder-gray-50 dark:placeholder-gray-500 border-none outline-none;
     background: transparent;
 }
 
@@ -12,10 +12,26 @@ input {
 
 @tailwind utilities;
 
+.base-button {
+    @apply py-2
+    px-4
+    rounded-lg
+    transition
+    bg-gray-700
+    disabled:bg-gray-800
+    active:bg-gray-600
+    border
+    border-gray-500
+    disabled:border-gray-600
+    text-sm
+    font-semibold
+    disabled:text-gray-300
+}
+
 * {
-    @apply dark:text-gray-100
+    @apply dark:text-gray-50
 }
 
 body {
-    @apply h-screen dark:bg-black
+    @apply h-screen dark:bg-gray-700
 }

src/client/tailwind.config.js

@@ -5,7 +5,34 @@ module.exports = {
   },
   darkMode: "media", // or 'media' or 'class'
   theme: {
-    extend: {},
+    extend: {
+      colors: {
+        gray: {
+          50: "#eaeaea",
+          100: "#d4d4d5",
+          200: "#bfbfc0",
+          300: "#a9aaab",
+          400: "#949596",
+          500: "#535557",
+          600: "#3d3f42",
+          700: "#282A2D",
+          800: "#1c1d1f",
+          900: "#141517",
+        },
+        accent: {
+          50: "#fcf6e7",
+          100: "#faeccf",
+          200: "#f5d99e",
+          300: "#efc66e",
+          400: "#eab33d",
+          500: "#e5a00d",
+          600: "#b7800a",
+          700: "#896008",
+          800: "#5c4005",
+          900: "#2e2003",
+        },
+      },
+    },
   },
   variants: {
     extend: {},