add task P3

README.md

@@ -47,4 +47,4 @@ Implement the ability to edit a todo title on double click:
 
 - Implement a solution following the [React task guideline](https://github.com/mate-academy/react_task-guideline#react-tasks-guideline).
 - Use the [React TypeScript cheat sheet](https://mate-academy.github.io/fe-program/js/extra/react-typescript).
-- Replace `<your_account>` with your Github username in the [DEMO LINK](https://<your_account>.github.io/react_todo-app-with-api/) and add it to the PR description.
+- Replace `<your_account>` with your Github username in the [DEMO LINK](https://ArtemNosachenko.github.io/react_todo-app-with-api/) and add it to the PR description.

src/App.tsx

@@ -1,26 +1,372 @@
-/* eslint-disable max-len */
+/* eslint-disable jsx-a11y/label-has-associated-control */
 /* eslint-disable jsx-a11y/control-has-associated-label */
 import React from 'react';
 import { UserWarning } from './UserWarning';
+import {
+  USER_ID,
+  getTodos,
+  addTodo,
+  deleteTodo,
+  updateTodo,
+} from './api/todos';
+import { Todo } from './types/Todo';
+import classNames from 'classnames';
+import { FilterType } from './types/FilterType';
+import { ErrorNotification } from './components/ErrorNotification';
+import { Header } from './components/Header';
+import { Footer } from './components/Footer';
 
-const USER_ID = 0;
+export enum ErrorMessage {
+  LOAD_TODOS = 'Unable to load todos',
+  ADD_TODO = 'Unable to add a todo',
+  DELETE_TODO = 'Unable to delete a todo',
+  UPDATE_TODO = 'Unable to update a todo',
+  EMPTY_TITLE = 'Title should not be empty',
+}
 
 export const App: React.FC = () => {
+  const [todos, setTodos] = React.useState<Todo[]>([]);
+  const [errorMessage, setErrorMessage] = React.useState('');
+  const [filter, setFilter] = React.useState(FilterType.All);
+  const activeTodos = todos.filter(todo => !todo.completed);
+  const visibleTodos = todos.filter(todo => {
+    switch (filter) {
+      case FilterType.Active:
+        return !todo.completed;
+
+      case FilterType.Completed:
+        return todo.completed;
+
+      default:
+        return true;
+    }
+  });
+
+  const [query, setQuery] = React.useState('');
+  const inputRef = React.useRef<HTMLInputElement>(null);
+  const [tempTodo, setTempTodo] = React.useState<Todo | null>(null);
+  const [isSubmitting, setIsSubmitting] = React.useState(false);
+  const [loadingTodoIds, setLoadingTodoIds] = React.useState<number[]>([]);
+  const [editingTodoId, setEditingTodoId] = React.useState<number | null>(null);
+  const [editingTitle, setEditingTitle] = React.useState('');
+  const [, setIsTodosLoading] = React.useState(true);
+
+  React.useEffect(() => {
+    setIsTodosLoading(true);
+
+    getTodos()
+      .then(setTodos)
+      .catch(() => {
+        setErrorMessage(ErrorMessage.LOAD_TODOS);
+      })
+      .finally(() => {
+        setIsTodosLoading(false);
+      });
+  }, []);
+
+  React.useEffect(() => {
+    if (!errorMessage) {
+      return;
+    }
+
+    const timer = setTimeout(() => {
+      setErrorMessage('');
+    }, 3000);
+
+    return () => clearTimeout(timer);
+  }, [errorMessage]);
+
+  React.useEffect(() => {
+    inputRef.current?.focus();
+  }, []);
+
+  const handleSubmit = async (event: React.FormEvent<HTMLFormElement>) => {
+    event.preventDefault();
+
+    const trimmedTitle = query.trim();
+
+    if (!trimmedTitle) {
+      setErrorMessage(ErrorMessage.EMPTY_TITLE);
+
+      return;
+    }
+
+    const temporaryTodo: Todo = {
+      id: 0,
+      title: trimmedTitle,
+      completed: false,
+      userId: USER_ID,
+    };
+
+    setTempTodo(temporaryTodo);
+    setIsSubmitting(true);
+
+    try {
+      const createdTodo = await addTodo({
+        title: trimmedTitle,
+        completed: false,
+        userId: USER_ID,
+      });
+
+      setTodos(current => [...current, createdTodo]);
+      setQuery('');
+    } catch {
+      setErrorMessage(ErrorMessage.ADD_TODO);
+    } finally {
+      setTempTodo(null);
+      setIsSubmitting(false);
+      setTimeout(() => {
+        inputRef.current?.focus();
+      }, 0);
+    }
+  };
+
+  const preparedTodos = tempTodo ? [...visibleTodos, tempTodo] : visibleTodos;
+  const completedTodos = todos.filter(todo => todo.completed);
+
+  const handleDelete = async (id: number) => {
+    setLoadingTodoIds(prev => [...prev, id]);
+
+    try {
+      await deleteTodo(id);
+
+      setTodos(current => current.filter(todo => todo.id !== id));
+    } catch {
+      setErrorMessage(ErrorMessage.DELETE_TODO);
+    } finally {
+      setLoadingTodoIds(prev => prev.filter(todoId => todoId !== id));
+
+      inputRef.current?.focus();
+    }
+  };
+
+  const handleClearCompleted = async () => {
+    const completed = todos.filter(todo => todo.completed);
+
+    const promises = completed.map(todo => {
+      setLoadingTodoIds(prev => [...prev, todo.id]);
+
+      return deleteTodo(todo.id)
+        .then(() => {
+          setTodos(current => current.filter(t => t.id !== todo.id));
+        })
+        .catch(() => {
+          setErrorMessage(ErrorMessage.DELETE_TODO);
+        })
+        .finally(() => {
+          setLoadingTodoIds(prev => prev.filter(id => id !== todo.id));
+        });
+    });
+
+    await Promise.allSettled(promises);
+
+    inputRef.current?.focus();
+  };
+
+  const handleToggle = async (todo: Todo) => {
+    setLoadingTodoIds(prev => [...prev, todo.id]);
+
+    try {
+      const updatedTodo = await updateTodo(todo.id, {
+        completed: !todo.completed,
+      });
+
+      setTodos(current =>
+        current.map(t => (t.id === todo.id ? updatedTodo : t)),
+      );
+    } catch {
+      setErrorMessage(ErrorMessage.UPDATE_TODO);
+    } finally {
+      setLoadingTodoIds(prev => prev.filter(id => id !== todo.id));
+    }
+  };
+
+  const handleToggleAll = async () => {
+    const newStatus = activeTodos.length > 0;
+
+    const todosToUpdate = todos.filter(todo => todo.completed !== newStatus);
+
+    await Promise.all(
+      todosToUpdate.map(async todo => {
+        setLoadingTodoIds(prev => [...prev, todo.id]);
+
+        try {
+          const updatedTodo = await updateTodo(todo.id, {
+            completed: newStatus,
+          });
+
+          setTodos(current =>
+            current.map(t => (t.id === todo.id ? updatedTodo : t)),
+          );
+        } catch {
+          setErrorMessage(ErrorMessage.UPDATE_TODO);
+        } finally {
+          setLoadingTodoIds(prev => prev.filter(id => id !== todo.id));
+        }
+      }),
+    );
+  };
+
+  const handleRename = async (todo: Todo) => {
+    const trimmedTitle = editingTitle.trim();
+
+    if (trimmedTitle === todo.title) {
+      setEditingTodoId(null);
+
+      return;
+    }
+
+    if (!trimmedTitle) {
+      handleDelete(todo.id);
+
+      return;
+    }
+
+    setLoadingTodoIds(prev => [...prev, todo.id]);
+
+    try {
+      const updatedTodo = await updateTodo(todo.id, {
+        title: trimmedTitle,
+      });
+
+      setTodos(current =>
+        current.map(t => (t.id === todo.id ? updatedTodo : t)),
+      );
+
+      setEditingTodoId(null);
+    } catch {
+      setErrorMessage(ErrorMessage.UPDATE_TODO);
+    } finally {
+      setLoadingTodoIds(prev => prev.filter(id => id !== todo.id));
+    }
+  };
+
   if (!USER_ID) {
     return <UserWarning />;
   }
 
+  const handleRenameSubmit = (
+    event: React.FormEvent<HTMLFormElement>,
+    todo: Todo,
+  ) => {
+    event.preventDefault();
+    handleRename(todo);
+  };
+
+  const handleEditKeyUp = (event: React.KeyboardEvent<HTMLInputElement>) => {
+    if (event.key === 'Escape') {
+      setEditingTodoId(null);
+    }
+  };
+
+  const handleStartEditing = (todo: Todo) => {
+    setEditingTodoId(todo.id);
+    setEditingTitle(todo.title);
+  };
+
   return (
-    <section className="section container">
-      <p className="title is-4">
-        Copy all you need from the prev task:
-        <br />
-        <a href="https://github.com/mate-academy/react_todo-app-add-and-delete#react-todo-app-add-and-delete">
-          React Todo App - Add and Delete
-        </a>
-      </p>
-
-      <p className="subtitle">Styles are already copied</p>
-    </section>
+    <div className="todoapp">
+      <h1 className="todoapp__title">todos</h1>
+
+      <div className="todoapp__content">
+        <Header
+          hasTodos={todos.length > 0}
+          allCompleted={activeTodos.length === 0}
+          query={query}
+          isSubmitting={isSubmitting}
+          inputRef={inputRef}
+          onSubmit={handleSubmit}
+          onQueryChange={setQuery}
+          onToggleAll={handleToggleAll}
+        />
+
+        <section className="todoapp__main" data-cy="TodoList">
+          {preparedTodos.map(todo => {
+            const isLoading = todo.id === 0 || loadingTodoIds.includes(todo.id);
+
+            return (
+              <div
+                key={todo.id}
+                data-cy="Todo"
+                className={classNames('todo', {
+                  completed: todo.completed,
+                })}
+              >
+                <label className="todo__status-label">
+                  <input
+                    data-cy="TodoStatus"
+                    type="checkbox"
+                    className="todo__status"
+                    checked={todo.completed}
+                    onChange={() => handleToggle(todo)}
+                  />
+                </label>
+
+                {editingTodoId === todo.id ? (
+                  <form onSubmit={e => handleRenameSubmit(e, todo)}>
+                    <input
+                      data-cy="TodoTitleField"
+                      type="text"
+                      className="todo__title-field"
+                      value={editingTitle}
+                      onChange={e => setEditingTitle(e.target.value)}
+                      onBlur={() => handleRename(todo)}
+                      onKeyUp={handleEditKeyUp}
+                      autoFocus
+                    />
+                  </form>
+                ) : (
+                  <span
+                    data-cy="TodoTitle"
+                    className="todo__title"
+                    onDoubleClick={() => {
+                      handleStartEditing(todo);
+                    }}
+                  >
+                    {todo.title}
+                  </span>
+                )}
+
+                {editingTodoId !== todo.id && (
+                  <button
+                    type="button"
+                    className="todo__remove"
+                    data-cy="TodoDelete"
+                    onClick={() => handleDelete(todo.id)}
+                  >
+                    ×
+                  </button>
+                )}
+
+                <div
+                  data-cy="TodoLoader"
+                  className={classNames('modal overlay', {
+                    hidden: !isLoading,
+                    'is-active': isLoading,
+                  })}
+                >
+                  <div className="loader" />
+                </div>
+              </div>
+            );
+          })}
+        </section>
+
+        {todos.length > 0 && (
+          <Footer
+            activeCount={activeTodos.length}
+            completedCount={completedTodos.length}
+            filter={filter}
+            onFilterChange={setFilter}
+            onClearCompleted={handleClearCompleted}
+          />
+        )}
+      </div>
+
+      <ErrorNotification
+        errorMessage={errorMessage}
+        onClose={() => setErrorMessage('')}
+      />
+    </div>
   );
 };