React_dynamic-list-of-posts

README.md

@@ -34,3 +34,5 @@ form to add new comments.
 1. Implement comment deletion
     - Delete the commnet immediately not waiting for the server response to improve the UX.
 1. (*) Handle `Add` and `Delete` errors so the user can retry
+
+[DEMO LINK](https://ArtemKravcov85.github.io/react_dynamic-list-of-posts/)

cypress.json

@@ -1,6 +1,5 @@
 {
   "baseUrl": "http://localhost:3000",
-  "defaultCommandTimeout": 2000,
   "video": true,
   "viewportHeight": 1920,
   "viewportWidth": 1080,

cypress/support/index.d.ts

@@ -1,9 +1 @@
 import '@mate-academy/cypress-tools/support';
-
-declare global {
-  namespace Cypress {
-    interface Chainable<Subject> {
-      byDataCy(name: string, text: string): Chainable<JQuery>;
-    }
-  }
-}

cypress/support/index.js

@@ -1,19 +1 @@
 require('@mate-academy/cypress-tools/support');
-
-Cypress.Commands.add(
-  'byDataCy',
-  { prevSubject: 'optional' },
-
-  (subject, name, text = '') => {
-    const target = subject || cy;
-    const selector = `[data-cy="${name}"]`;
-
-    if (text) {
-      return target.contain(selector, text);
-    }
-
-    return subject
-      ? subject.find(selector)
-      : cy.get(selector);
-  },
-);

package.json

@@ -21,7 +21,7 @@
     "@cypress/webpack-dev-server": "^1.8.4",
     "@mate-academy/cypress-tools": "^1.0.5",
     "@mate-academy/eslint-config-react-typescript": "^1.0.5",
-    "@mate-academy/scripts": "^1.2.3",
+    "@mate-academy/scripts": "^1.2.8",
     "@mate-academy/students-ts-config": "*",
     "@mate-academy/stylelint-config": "*",
     "@types/node": "^17.0.23",

src/App.tsx

@@ -1,60 +1,192 @@
-import React from 'react';
-import 'bulma/bulma.sass';
-import '@fortawesome/fontawesome-free/css/all.css';
-import './App.scss';
+import React, { useEffect, useState } from 'react';
+import cn from 'classnames';
 
-import classNames from 'classnames';
+import { UserSelector } from './components/UserSelector';
 import { PostsList } from './components/PostsList';
 import { PostDetails } from './components/PostDetails';
-import { UserSelector } from './components/UserSelector';
 import { Loader } from './components/Loader';
+import { User } from './types/User';
+import {
+  addComment,
+  deleteComment,
+  getComments,
+  getUserPosts,
+  getUsers,
+} from './api/api';
+import { Post } from './types/Post';
+import { Comment } from './types/Comment';
+
+import './App.scss';
+import 'bulma/bulma.sass';
+import '@fortawesome/fontawesome-free/css/all.css';
 
 export const App: React.FC = () => {
+  const [users, setUsers] = useState<User[]>([]);
+  const [userPosts, setUserPosts] = useState<Post[]>([]);
+  const [selectedUser, setSelectedUser] = useState<User | null>(null);
+  const [selectedPost, setSelectedPost] = useState<Post | null>(null);
+  const [comments, setComments] = useState<Comment[]>([]);
+
+  const [isCommentsLoading, setIsCommentsLoading] = useState(false);
+  const [isLoading, setIsLoading] = useState(false);
+  const [isError, setIsError] = useState(false);
+  const [isCommentError, setIsCommentError] = useState(false);
+  const [canWriteComment, setCanWriteComment] = useState(false);
+
+  useEffect(() => {
+    getUsers()
+      .then((userFromServer: User[]) => setUsers(userFromServer))
+      .catch(() => setIsCommentError(true));
+  }, []);
+
+  const getUserPostsFromServer = (userId: number) => {
+    setIsLoading(true);
+
+    getUserPosts(userId)
+      .then((data) => {
+        setUserPosts(data);
+        setIsError(false);
+      })
+      .catch(() => setIsError(true))
+      .finally(() => setIsLoading(false));
+  };
+
+  const getCommentsFromServer = (postId: number) => {
+    setIsCommentsLoading(true);
+
+    getComments(postId)
+      .then((data) => {
+        setComments(data);
+        setIsCommentError(false);
+      })
+      .catch(() => setIsCommentError(true))
+      .finally(() => {
+        setIsLoading(false);
+        setIsCommentsLoading(false);
+      });
+  };
+
+  const handleUserSelect = (
+    event: React.MouseEvent<HTMLAnchorElement, MouseEvent>,
+    user: User,
+  ) => {
+    event.preventDefault();
+
+    getUserPostsFromServer(user.id);
+    setSelectedUser(user);
+    setSelectedPost(null);
+  };
+
+  const handleSelectPost = (post: Post) => {
+    setSelectedPost((currentPost) => {
+      if (currentPost?.id === post.id) {
+        return null;
+      }
+
+      return post;
+    });
+
+    getCommentsFromServer(post.id);
+    setCanWriteComment(false);
+  };
+
+  const handleAddNewComment = async (
+    postId: number,
+    name: string,
+    email: string,
+    body: string,
+  ) => {
+    const newComment = await addComment(postId, name, email, body);
+
+    const filteredComments
+      = comments.filter(comment => selectedPost?.id === comment.postId);
+
+    setComments([...filteredComments, newComment]);
+  };
+
+  const handleDeleteComment = (commentId: number) => {
+    deleteComment(commentId)
+      .then(() => {
+        const filteredComments
+          = comments.filter(comment => comment.id !== commentId);
+
+        setComments(filteredComments);
+      });
+  };
+
   return (
     <main className="section">
       <div className="container">
         <div className="tile is-ancestor">
           <div className="tile is-parent">
             <div className="tile is-child box is-success">
               <div className="block">
-                <UserSelector />
+                <UserSelector
+                  users={users}
+                  handleUserSelect={handleUserSelect}
+                  selectedUser={selectedUser}
+                />
               </div>
 
               <div className="block" data-cy="MainContent">
-                <p data-cy="NoSelectedUser">
-                  No user selected
-                </p>
+                {!selectedUser && (
+                  <p data-cy="NoSelectedUser">No user selected</p>
+                )}
 
-                <Loader />
+                {isLoading && <Loader />}
 
-                <div
-                  className="notification is-danger"
-                  data-cy="PostsLoadingError"
-                >
-                  Something went wrong!
-                </div>
+                {isError && !isLoading && (
+                  <div
+                    className="notification is-danger"
+                    data-cy="PostsLoadingError"
+                  >
+                    Something went wrong!
+                  </div>
+                )}
 
-                <div className="notification is-warning" data-cy="NoPostsYet">
-                  No posts yet
-                </div>
+                {!userPosts.length
+                  && selectedUser
+                  && !isLoading
+                  && !isError
+                  && (
+                    <div
+                      className="notification is-warning"
+                      data-cy="NoPostsYet"
+                    >
+                      No posts yet
+                    </div>
+                  )}
 
-                <PostsList />
+                {userPosts.length > 0 && !isLoading && (
+                  <PostsList
+                    userPosts={userPosts}
+                    handleSelectPost={handleSelectPost}
+                    selectedPost={selectedPost}
+                  />
+                )}
               </div>
             </div>
           </div>
 
           <div
             data-cy="Sidebar"
-            className={classNames(
-              'tile',
-              'is-parent',
-              'is-8-desktop',
-              'Sidebar',
-              'Sidebar--open',
-            )}
+            className={cn('tile', 'is-parent', 'is-8-desktop', 'Sidebar', {
+              'Sidebar--open': selectedPost,
+            })}
           >
             <div className="tile is-child box is-success ">
-              <PostDetails />
+              {selectedPost && (
+                <PostDetails
+                  selectedPost={selectedPost}
+                  comments={comments}
+                  isCommentError={isCommentError}
+                  canWriteComment={canWriteComment}
+                  setCanWriteComment={setCanWriteComment}
+                  handleAddNewComment={handleAddNewComment}
+                  handleDeleteComment={handleDeleteComment}
+                  isCommentsLoading={isCommentsLoading}
+                />
+              )}
             </div>
           </div>
         </div>

src/api/api.ts

@@ -0,0 +1,34 @@
+import { Comment } from '../types/Comment';
+import { Post } from '../types/Post';
+import { User } from '../types/User';
+import { client } from '../utils/fetchClient';
+
+export const getUsers = () => {
+  return client.get<User[]>('/users');
+};
+
+export const getUserPosts = (userId: number) => {
+  return client.get<Post[]>(`/posts?userId=${userId}`);
+};
+
+export const getComments = (postId: number) => {
+  return client.get<Comment[]>(`/comments?postId=${postId}`);
+};
+
+export const addComment = (
+  postId: number,
+  name: string,
+  email: string,
+  body: string,
+) => {
+  return client.post<Comment>('/comments', {
+    postId,
+    name,
+    email,
+    body,
+  });
+};
+
+export const deleteComment = (commentId: number) => {
+  return client.delete(`/comments/${commentId}`);
+};