Initialize project

Lab10/Lab10_201920756/public/manifest.json

+{
+  "short_name": "React App",
+  "name": "Create React App Sample",
+  "icons": [
+    {
+      "src": "favicon.ico",
+      "sizes": "64x64 32x32 24x24 16x16",
+      "type": "image/x-icon"
+    },
+    {
+      "src": "logo192.png",
+      "type": "image/png",
+      "sizes": "192x192"
+    },
+    {
+      "src": "logo512.png",
+      "type": "image/png",
+      "sizes": "512x512"
+    }
+  ],
+  "start_url": ".",
+  "display": "standalone",
+  "theme_color": "#000000",
+  "background_color": "#ffffff"
+}

Lab10/Lab10_201920756/public/robots.txt

+# https://www.robotstxt.org/robotstxt.html
+User-agent: *
+Disallow:

Lab10/Lab10_201920756/src/App.css

+.Completed {
+  text-decoration: line-through;
+}

Lab10/Lab10_201920756/src/App.js

+import "./App.css";
+import React, { useState, useEffect } from "react";
+import Statistics from "./Component/Statistics";
+import Utils from "./Component/Utils";
+import Tasks from "./Component/Tasks";
+import TodoContext from "./TodoContext";
+
+function App() {
+  const [todos, setTodos] = useState([]);
+  const [numTotalRequests, setNumTotalRequests] = useState(0);
+
+  const fetchTodos = async () => {
+    try {
+      const response = await fetch("/api/todos");
+      const result = await response.json();
+      setTodos(result);
+      setNumTotalRequests((prevNum) => prevNum + 1);
+    } catch (error) {
+      console.error("Error fetching todos:", error);
+    }
+  };
+
+  useEffect(() => {
+    fetchTodos();
+  }, []);
+
+  const toggleTodoState = async (id) => {
+    try {
+      await fetch(`/api/todos/${id}/toggle`, { method: "PUT" });
+      fetchTodos();
+    } catch (error) {
+      console.error("Error toggling todo state:", error);
+    }
+  };
+
+  const addTodo = async (content, priority, state) => {
+    try {
+      await fetch("/api/todos", {
+        method: "POST",
+        headers: {
+          "Content-Type": "application/json",
+        },
+        body: JSON.stringify({ content, priority, state }),
+      });
+      fetchTodos();
+    } catch (error) {
+      console.error("Error adding todo:", error);
+    }
+  };
+
+  const addSubtask = async (parentId, content, priority, state) => {
+    try {
+      await fetch(`/api/todos/${parentId}`, {
+        method: "POST",
+        headers: {
+          "Content-Type": "application/json",
+        },
+        body: JSON.stringify({ content, priority, state }),
+      });
+      fetchTodos();
+    } catch (error) {
+      console.error("Error adding subtask:", error);
+    }
+  };
+
+  const removeTodo = async (id) => {
+    try {
+      await fetch(`/api/todos/${id}`, { method: "DELETE" });
+      fetchTodos();
+    } catch (error) {
+      console.error("Error removing todo:", error);
+    }
+  };
+
+  return (
+    <TodoContext.Provider value={{ todos, numTotalRequests }}>
+      <div>
+        <h1>Todo List</h1>
+        <button onClick={fetchTodos}>Load Todos</button>
+        <Statistics />
+        <Utils
+          addTodo={addTodo}
+          addSubtask={addSubtask}
+          removeTodo={removeTodo}
+        />
+        <Tasks toggleTodoState={toggleTodoState} />
+      </div>
+    </TodoContext.Provider>
+  );
+}
+
+export default App;

Lab10/Lab10_201920756/src/App.test.js

+import { render, screen } from '@testing-library/react';
+import App from './App';
+
+test('renders learn react link', () => {
+  render(<App />);
+  const linkElement = screen.getByText(/learn react/i);
+  expect(linkElement).toBeInTheDocument();
+});

Lab10/Lab10_201920756/src/Component/Statistics.js

+import React, { useState, useContext, useEffect } from "react";
+import TodoContext from "../TodoContext";
+
+const Statistics = () => {
+  const { todos, numTotalRequests } = useContext(TodoContext);
+  const [numTotalTasks, setNumTotalTasks] = useState(0);
+
+  const getNumTotalTasks = (todos) => {
+    let total = 0;
+
+    todos.forEach((todo) => {
+      total += 1;
+
+      if (todo.subtasks.length > 0) {
+        total += getNumTotalTasks(todo.subtasks);
+      }
+    });
+
+    return total;
+  };
+
+  useEffect(() => {
+    setNumTotalTasks(getNumTotalTasks(todos));
+    // eslint-disable-next-line
+  }, [todos]);
+
+  return (
+    <div>
+      <p>Total Tasks: {numTotalTasks}</p>
+      <p>Total Requests: {numTotalRequests}</p>
+    </div>
+  );
+};
+
+export default Statistics;

Lab10/Lab10_201920756/src/Component/Tasks.js

+import React, { useContext } from "react";
+import TodoContext from "../TodoContext";
+
+const Tasks = ({ toggleTodoState }) => {
+  const { todos } = useContext(TodoContext);
+
+  const toggleSubtaskState = (todo) => {
+    toggleTodoState(todo._id);
+    todo.subtasks.forEach((subtask) => toggleSubtaskState(subtask));
+  };
+
+  const renderTasks = (todos) => {
+    return todos.map((todo) => (
+      <li key={todo._id}>
+        <div className={todo.state ? "Completed" : ""}>
+          <input
+            type="checkbox"
+            checked={todo.state}
+            onChange={() => toggleSubtaskState(todo)}
+          />
+          {todo.content} / {todo.priority}
+        </div>
+        {todo.subtasks.length > 0 && <ul>{renderTasks(todo.subtasks)}</ul>}
+      </li>
+    ));
+  };
+
+  return (
+    <div>
+      <ul>{renderTasks(todos)}</ul>
+    </div>
+  );
+};
+
+export default Tasks;

Lab10/Lab10_201920756/src/Component/Utils.js

+import React, { useState } from "react";
+
+const Utils = ({ addTodo, addSubtask, removeTodo }) => {
+  const [todoContent, setTodoContent] = useState("");
+  const [todoPriority, setTodoPriority] = useState("");
+  const [parentId, setParentId] = useState("");
+  const [subtaskContent, setSubtaskContent] = useState("");
+  const [subtaskPriority, setSubtaskPriority] = useState("");
+  const [deleteId, setDeleteId] = useState("");
+
+  const handleAddTodo = () => {
+    addTodo(todoContent, todoPriority, false);
+    setTodoContent("");
+    setTodoPriority("");
+  };
+
+  const handleAddSubtask = () => {
+    addSubtask(parentId, subtaskContent, subtaskPriority, false);
+    setParentId("");
+    setSubtaskContent("");
+    setSubtaskPriority("");
+  };
+
+  const handleRemoveTodo = () => {
+    removeTodo(deleteId);
+    setDeleteId("");
+  };
+
+  return (
+    <div>
+      <form onSubmit={handleAddTodo}>
+        <input
+          type="text"
+          placeholder="Content"
+          value={todoContent}
+          onChange={(e) => setTodoContent(e.target.value)}
+        />
+        <input
+          type="text"
+          placeholder="Priority"
+          value={todoPriority}
+          onChange={(e) => setTodoPriority(e.target.value)}
+        />
+        <button type="submit">Add Todo</button>
+      </form>
+      <form onSubmit={handleAddSubtask}>
+        <input
+          type="text"
+          placeholder="Parent ID"
+          value={parentId}
+          onChange={(e) => setParentId(e.target.value)}
+        />
+        <input
+          type="text"
+          placeholder="Content"
+          value={subtaskContent}
+          onChange={(e) => setSubtaskContent(e.target.value)}
+        />
+        <input
+          type="text"
+          placeholder="Priority"
+          value={subtaskPriority}
+          onChange={(e) => setSubtaskPriority(e.target.value)}
+        />
+        <button type="submit">Add Subtask</button>
+      </form>
+      <form onSubmit={handleRemoveTodo}>
+        <input
+          type="text"
+          placeholder="Delete ID"
+          value={deleteId}
+          onChange={(e) => setDeleteId(e.target.value)}
+        />
+        <button type="submit">Remove Todo</button>
+      </form>
+    </div>
+  );
+};
+
+export default Utils;

Lab10/Lab10_201920756/src/TodoContext.js

+import { createContext } from "react";
+
+const TodoContext = createContext();
+
+export default TodoContext;

Lab10/Lab10_201920756/src/index.css

+body {
+  margin: 0;
+  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
+    'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue',
+    sans-serif;
+  -webkit-font-smoothing: antialiased;
+  -moz-osx-font-smoothing: grayscale;
+}
+
+code {
+  font-family: source-code-pro, Menlo, Monaco, Consolas, 'Courier New',
+    monospace;
+}

Lab10/Lab10_201920756/src/index.js

+import React from "react";
+import ReactDOM from "react-dom/client";
+import "./index.css";
+import App from "./App";
+import reportWebVitals from "./reportWebVitals";
+
+const root = ReactDOM.createRoot(document.getElementById("root"));
+root.render(
+  <>
+    <App />
+  </>
+);
+
+// If you want to start measuring performance in your app, pass a function
+// to log results (for example: reportWebVitals(console.log))
+// or send to an analytics endpoint. Learn more: https://bit.ly/CRA-vitals
+reportWebVitals();

Lab10/Lab10_201920756/src/logo.svg

+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 841.9 595.3"><g fill="#61DAFB"><path d="M666.3 296.5c0-32.5-40.7-63.3-103.1-82.4 14.4-63.6 8-114.2-20.2-130.4-6.5-3.8-14.1-5.6-22.4-5.6v22.3c4.6 0 8.3.9 11.4 2.6 13.6 7.8 19.5 37.5 14.9 75.7-1.1 9.4-2.9 19.3-5.1 29.4-19.6-4.8-41-8.5-63.5-10.9-13.5-18.5-27.5-35.3-41.6-50 32.6-30.3 63.2-46.9 84-46.9V78c-27.5 0-63.5 19.6-99.9 53.6-36.4-33.8-72.4-53.2-99.9-53.2v22.3c20.7 0 51.4 16.5 84 46.6-14 14.7-28 31.4-41.3 49.9-22.6 2.4-44 6.1-63.6 11-2.3-10-4-19.7-5.2-29-4.7-38.2 1.1-67.9 14.6-75.8 3-1.8 6.9-2.6 11.5-2.6V78.5c-8.4 0-16 1.8-22.6 5.6-28.1 16.2-34.4 66.7-19.9 130.1-62.2 19.2-102.7 49.9-102.7 82.3 0 32.5 40.7 63.3 103.1 82.4-14.4 63.6-8 114.2 20.2 130.4 6.5 3.8 14.1 5.6 22.5 5.6 27.5 0 63.5-19.6 99.9-53.6 36.4 33.8 72.4 53.2 99.9 53.2 8.4 0 16-1.8 22.6-5.6 28.1-16.2 34.4-66.7 19.9-130.1 62-19.1 102.5-49.9 102.5-82.3zm-130.2-66.7c-3.7 12.9-8.3 26.2-13.5 39.5-4.1-8-8.4-16-13.1-24-4.6-8-9.5-15.8-14.4-23.4 14.2 2.1 27.9 4.7 41 7.9zm-45.8 106.5c-7.8 13.5-15.8 26.3-24.1 38.2-14.9 1.3-30 2-45.2 2-15.1 0-30.2-.7-45-1.9-8.3-11.9-16.4-24.6-24.2-38-7.6-13.1-14.5-26.4-20.8-39.8 6.2-13.4 13.2-26.8 20.7-39.9 7.8-13.5 15.8-26.3 24.1-38.2 14.9-1.3 30-2 45.2-2 15.1 0 30.2.7 45 1.9 8.3 11.9 16.4 24.6 24.2 38 7.6 13.1 14.5 26.4 20.8 39.8-6.3 13.4-13.2 26.8-20.7 39.9zm32.3-13c5.4 13.4 10 26.8 13.8 39.8-13.1 3.2-26.9 5.9-41.2 8 4.9-7.7 9.8-15.6 14.4-23.7 4.6-8 8.9-16.1 13-24.1zM421.2 430c-9.3-9.6-18.6-20.3-27.8-32 9 .4 18.2.7 27.5.7 9.4 0 18.7-.2 27.8-.7-9 11.7-18.3 22.4-27.5 32zm-74.4-58.9c-14.2-2.1-27.9-4.7-41-7.9 3.7-12.9 8.3-26.2 13.5-39.5 4.1 8 8.4 16 13.1 24 4.7 8 9.5 15.8 14.4 23.4zM420.7 163c9.3 9.6 18.6 20.3 27.8 32-9-.4-18.2-.7-27.5-.7-9.4 0-18.7.2-27.8.7 9-11.7 18.3-22.4 27.5-32zm-74 58.9c-4.9 7.7-9.8 15.6-14.4 23.7-4.6 8-8.9 16-13 24-5.4-13.4-10-26.8-13.8-39.8 13.1-3.1 26.9-5.8 41.2-7.9zm-90.5 125.2c-35.4-15.1-58.3-34.9-58.3-50.6 0-15.7 22.9-35.6 58.3-50.6 8.6-3.7 18-7 27.7-10.1 5.7 19.6 13.2 40 22.5 60.9-9.2 20.8-16.6 41.1-22.2 60.6-9.9-3.1-19.3-6.5-28-10.2zM310 490c-13.6-7.8-19.5-37.5-14.9-75.7 1.1-9.4 2.9-19.3 5.1-29.4 19.6 4.8 41 8.5 63.5 10.9 13.5 18.5 27.5 35.3 41.6 50-32.6 30.3-63.2 46.9-84 46.9-4.5-.1-8.3-1-11.3-2.7zm237.2-76.2c4.7 38.2-1.1 67.9-14.6 75.8-3 1.8-6.9 2.6-11.5 2.6-20.7 0-51.4-16.5-84-46.6 14-14.7 28-31.4 41.3-49.9 22.6-2.4 44-6.1 63.6-11 2.3 10.1 4.1 19.8 5.2 29.1zm38.5-66.7c-8.6 3.7-18 7-27.7 10.1-5.7-19.6-13.2-40-22.5-60.9 9.2-20.8 16.6-41.1 22.2-60.6 9.9 3.1 19.3 6.5 28.1 10.2 35.4 15.1 58.3 34.9 58.3 50.6-.1 15.7-23 35.6-58.4 50.6zM320.8 78.4z"/><circle cx="420.9" cy="296.5" r="45.7"/><path d="M520.5 78.1z"/></g></svg>
\ No newline at end of file

Lab10/Lab10_201920756/src/reportWebVitals.js

+const reportWebVitals = onPerfEntry => {
+  if (onPerfEntry && onPerfEntry instanceof Function) {
+    import('web-vitals').then(({ getCLS, getFID, getFCP, getLCP, getTTFB }) => {
+      getCLS(onPerfEntry);
+      getFID(onPerfEntry);
+      getFCP(onPerfEntry);
+      getLCP(onPerfEntry);
+      getTTFB(onPerfEntry);
+    });
+  }
+};
+
+export default reportWebVitals;

Lab10/Lab10_201920756/src/setupProxy.js

+const { createProxyMiddleware } = require("http-proxy-middleware");
+
+module.exports = function (app) {
+  app.use(
+    createProxyMiddleware("/api", {
+      target: "http://localhost:3080",
+      changeOrigin: true,
+    })
+  );
+};

Lab10/Lab10_201920756/src/setupTests.js

+// jest-dom adds custom jest matchers for asserting on DOM nodes.
+// allows you to do things like:
+// expect(element).toHaveTextContent(/react/i)
+// learn more: https://github.com/testing-library/jest-dom
+import '@testing-library/jest-dom';