From 274d478056d688272be099f865fa82cac56c6ee6 Mon Sep 17 00:00:00 2001
From: Yuliia Nudyk <yulyayu833@gmail.com>
Date: Wed, 25 Sep 2024 15:40:09 +0300
Subject: [PATCH 1/5] solution

---
 src/App.tsx                          |  99 ++++++++------
 src/components/CommentItem.tsx       |  50 +++++++
 src/components/CommentsList.tsx      |  30 +++++
 src/components/ErrorNotification.tsx |  15 +++
 src/components/NewCommentForm.tsx    | 146 +++++++++++++++-----
 src/components/PostDetails.tsx       | 190 ++++++++++++++-------------
 src/components/PostItem.tsx          |  36 +++++
 src/components/PostsList.tsx         | 140 ++++++++------------
 src/components/UserPosts.tsx         |  66 ++++++++++
 src/components/UserSelector.tsx      |  72 ++++++----
 src/hooks/useOutsideClick.ts         |  23 ++++
 src/services/comments.ts             |  14 ++
 src/services/posts.ts                |   6 +
 src/services/users.ts                |   6 +
 14 files changed, 618 insertions(+), 275 deletions(-)
 create mode 100644 src/components/CommentItem.tsx
 create mode 100644 src/components/CommentsList.tsx
 create mode 100644 src/components/ErrorNotification.tsx
 create mode 100644 src/components/PostItem.tsx
 create mode 100644 src/components/UserPosts.tsx
 create mode 100644 src/hooks/useOutsideClick.ts
 create mode 100644 src/services/comments.ts
 create mode 100644 src/services/posts.ts
 create mode 100644 src/services/users.ts

diff --git a/src/App.tsx b/src/App.tsx
index 017957182..380768ad0 100644
--- a/src/App.tsx
+++ b/src/App.tsx
@@ -1,60 +1,77 @@
-import classNames from 'classnames';
+// #region imports
+import cn from 'classnames';
 
 import 'bulma/css/bulma.css';
 import '@fortawesome/fontawesome-free/css/all.css';
 import './App.scss';
 
-import { PostsList } from './components/PostsList';
+import { useEffect, useState } from 'react';
 import { PostDetails } from './components/PostDetails';
 import { UserSelector } from './components/UserSelector';
-import { Loader } from './components/Loader';
-
-export const App = () => (
-  <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 />
-            </div>
+import { UserPosts } from './components/UserPosts';
+import { getUsers } from './services/users';
+import { Post } from './types/Post';
+import { User } from './types/User';
+// #endregion
 
-            <div className="block" data-cy="MainContent">
-              <p data-cy="NoSelectedUser">No user selected</p>
+export const App = () => {
+  // #region states
+  const [users, setUsers] = useState<User[]>([]);
+  const [selectedUserId, setSelectedUserId] = useState<number | null>(null);
+  const [selectedPost, setSelectedPost] = useState<Post | null>(null);
+  // #endregion
 
-              <Loader />
+  useEffect(() => {
+    getUsers().then(setUsers);
+  }, []);
 
-              <div
-                className="notification is-danger"
-                data-cy="PostsLoadingError"
-              >
-                Something went wrong!
+  return (
+    <main className="section">
+      <div className="container">
+        <div className="tile is-ancestor columns">
+          <div className="tile is-parent column">
+            <div className="tile is-child box is-success">
+              <div className="block">
+                <UserSelector
+                  users={users}
+                  selectedId={selectedUserId}
+                  onSelectId={setSelectedUserId}
+                />
               </div>
 
-              <div className="notification is-warning" data-cy="NoPostsYet">
-                No posts yet
-              </div>
+              <div className="block" data-cy="MainContent">
+                {!selectedUserId && (
+                  <p data-cy="NoSelectedUser">No user selected</p>
+                )}
 
-              <PostsList />
+                {selectedUserId && (
+                  <UserPosts
+                    userId={selectedUserId}
+                    selectedPostId={selectedPost?.id || null}
+                    onPostSelect={setSelectedPost}
+                  />
+                )}
+              </div>
             </div>
           </div>
-        </div>
 
-        <div
-          data-cy="Sidebar"
-          className={classNames(
-            'tile',
-            'is-parent',
-            'is-8-desktop',
-            'Sidebar',
-            'Sidebar--open',
-          )}
-        >
-          <div className="tile is-child box is-success ">
-            <PostDetails />
+          <div
+            data-cy="Sidebar"
+            className={cn(
+              'tile',
+              'is-parent',
+              'column',
+              'is-half-desktop',
+              'Sidebar',
+              { 'Sidebar--open': selectedPost },
+            )}
+          >
+            <div className="tile is-child box is-success ">
+              {selectedPost && <PostDetails post={selectedPost} />}
+            </div>
           </div>
         </div>
       </div>
-    </div>
-  </main>
-);
+    </main>
+  );
+};
diff --git a/src/components/CommentItem.tsx b/src/components/CommentItem.tsx
new file mode 100644
index 000000000..d94075299
--- /dev/null
+++ b/src/components/CommentItem.tsx
@@ -0,0 +1,50 @@
+import React, { memo } from 'react';
+import { Comment } from '../types/Comment';
+import { ErrorNotification } from './ErrorNotification';
+
+type Props = {
+  comment: Comment;
+  onDelete: (id: number) => void;
+  deletingErrorPostIds: number[];
+};
+
+export const CommentItem: React.FC<Props> = memo(function CommentItem({
+  comment,
+  onDelete,
+  deletingErrorPostIds,
+}) {
+  const { id, name, email, body } = comment;
+
+  return (
+    <>
+      <article className="message is-small" data-cy="Comment">
+        <div className="message-header">
+          <a href={`mailto:${email}`} data-cy="CommentAuthor">
+            {name}
+          </a>
+          <button
+            data-cy="CommentDelete"
+            type="button"
+            className="delete is-small"
+            aria-label="delete"
+            onClick={() => {
+              onDelete(id);
+            }}
+          ></button>
+        </div>
+
+        <div className="message-body" data-cy="CommentBody">
+          {body}
+        </div>
+      </article>
+
+      {deletingErrorPostIds.includes(id) && (
+        <ErrorNotification
+          errorMessage="
+                Unable to delete the comment. Try again!
+              "
+        />
+      )}
+    </>
+  );
+});
diff --git a/src/components/CommentsList.tsx b/src/components/CommentsList.tsx
new file mode 100644
index 000000000..4a9331778
--- /dev/null
+++ b/src/components/CommentsList.tsx
@@ -0,0 +1,30 @@
+import React, { memo } from 'react';
+import { Comment } from '../types/Comment';
+import { CommentItem } from './CommentItem';
+
+type Props = {
+  comments: Comment[];
+  onDelete: (id: number) => void;
+  deletingErrorPostIds: number[];
+};
+
+export const CommentsList: React.FC<Props> = memo(function CommentsList({
+  comments,
+  onDelete,
+  deletingErrorPostIds,
+}) {
+  return (
+    <>
+      <p className="title is-4">Comments:</p>
+
+      {comments.map(comment => (
+        <CommentItem
+          key={comment.id}
+          comment={comment}
+          onDelete={onDelete}
+          deletingErrorPostIds={deletingErrorPostIds}
+        />
+      ))}
+    </>
+  );
+});
diff --git a/src/components/ErrorNotification.tsx b/src/components/ErrorNotification.tsx
new file mode 100644
index 000000000..3ec822120
--- /dev/null
+++ b/src/components/ErrorNotification.tsx
@@ -0,0 +1,15 @@
+import React, { memo } from 'react';
+
+type Props = {
+  errorMessage: string;
+};
+
+export const ErrorNotification: React.FC<Props> = memo(
+  function ErrorNotification({ errorMessage }) {
+    return (
+      <div className="notification is-danger" data-cy="CommentsError">
+        {errorMessage}
+      </div>
+    );
+  },
+);
diff --git a/src/components/NewCommentForm.tsx b/src/components/NewCommentForm.tsx
index 73a8a0b45..86334883b 100644
--- a/src/components/NewCommentForm.tsx
+++ b/src/components/NewCommentForm.tsx
@@ -1,8 +1,61 @@
-import React from 'react';
+// #region imports
+import React, { memo, useState } from 'react';
+import cn from 'classnames';
+import { useForm } from 'react-hook-form';
+import { addPostComment } from '../services/comments';
+import { Comment } from '../types/Comment';
+import { ErrorNotification } from './ErrorNotification';
+// #endregion
+
+type Props = {
+  postId: number;
+  onCommentAdding: (comment: Comment) => void;
+};
+
+type FormData = {
+  name: string;
+  email: string;
+  body: string;
+};
+
+export const NewCommentForm: React.FC<Props> = memo(function NewCommentForm({
+  postId,
+  onCommentAdding,
+}) {
+  const {
+    register,
+    setValue,
+    handleSubmit,
+    formState: { errors },
+  } = useForm<FormData>();
+
+  const [isLoading, setIsLoading] = useState(false);
+  const [isAddingError, setIsAddingError] = useState(false);
+
+  const onSubmit = handleSubmit(formData => {
+    const newComment = {
+      postId,
+      ...formData,
+    };
+
+    setIsAddingError(false);
+    setIsLoading(true);
+
+    addPostComment(newComment)
+      .then(addedComment => {
+        onCommentAdding(addedComment);
+        setValue('body', '');
+      })
+      .catch(() => setIsAddingError(true))
+      .finally(() => setIsLoading(false));
+  });
+
+  const onReset = () => {
+    setIsAddingError(false);
+  };
 
-export const NewCommentForm: React.FC = () => {
   return (
-    <form data-cy="NewCommentForm">
+    <form data-cy="NewCommentForm" onSubmit={onSubmit} onReset={onReset}>
       <div className="field" data-cy="NameField">
         <label className="label" htmlFor="comment-author-name">
           Author Name
@@ -11,27 +64,33 @@ export const NewCommentForm: React.FC = () => {
         <div className="control has-icons-left has-icons-right">
           <input
             type="text"
-            name="name"
             id="comment-author-name"
             placeholder="Name Surname"
-            className="input is-danger"
+            {...register('name', { required: true })}
+            className={cn('input', {
+              'is-danger': errors.name,
+            })}
           />
 
           <span className="icon is-small is-left">
             <i className="fas fa-user" />
           </span>
 
-          <span
-            className="icon is-small is-right has-text-danger"
-            data-cy="ErrorIcon"
-          >
-            <i className="fas fa-exclamation-triangle" />
-          </span>
+          {errors.name && (
+            <span
+              className="icon is-small is-right has-text-danger"
+              data-cy="ErrorIcon"
+            >
+              <i className="fas fa-exclamation-triangle" />
+            </span>
+          )}
         </div>
 
-        <p className="help is-danger" data-cy="ErrorMessage">
-          Name is required
-        </p>
+        {errors.name && (
+          <p className="help is-danger" data-cy="ErrorMessage">
+            Name is required
+          </p>
+        )}
       </div>
 
       <div className="field" data-cy="EmailField">
@@ -41,28 +100,34 @@ export const NewCommentForm: React.FC = () => {
 
         <div className="control has-icons-left has-icons-right">
           <input
-            type="text"
-            name="email"
+            type="email"
             id="comment-author-email"
             placeholder="email@test.com"
-            className="input is-danger"
+            {...register('email', { required: true })}
+            className={cn('input', {
+              'is-danger': errors.email,
+            })}
           />
 
           <span className="icon is-small is-left">
             <i className="fas fa-envelope" />
           </span>
 
-          <span
-            className="icon is-small is-right has-text-danger"
-            data-cy="ErrorIcon"
-          >
-            <i className="fas fa-exclamation-triangle" />
-          </span>
+          {errors.email && (
+            <span
+              className="icon is-small is-right has-text-danger"
+              data-cy="ErrorIcon"
+            >
+              <i className="fas fa-exclamation-triangle" />
+            </span>
+          )}
         </div>
 
-        <p className="help is-danger" data-cy="ErrorMessage">
-          Email is required
-        </p>
+        {errors.email && (
+          <p className="help is-danger" data-cy="ErrorMessage">
+            Email is required
+          </p>
+        )}
       </div>
 
       <div className="field" data-cy="BodyField">
@@ -73,20 +138,27 @@ export const NewCommentForm: React.FC = () => {
         <div className="control">
           <textarea
             id="comment-body"
-            name="body"
             placeholder="Type comment here"
-            className="textarea is-danger"
+            {...register('body', { required: true })}
+            className={cn('textarea', {
+              'is-danger': errors.body,
+            })}
           />
         </div>
 
-        <p className="help is-danger" data-cy="ErrorMessage">
-          Enter some text
-        </p>
+        {errors.body && (
+          <p className="help is-danger" data-cy="ErrorMessage">
+            Enter some text
+          </p>
+        )}
       </div>
 
       <div className="field is-grouped">
         <div className="control">
-          <button type="submit" className="button is-link is-loading">
+          <button
+            type="submit"
+            className={cn('button is-link', { 'is-loading': isLoading })}
+          >
             Add
           </button>
         </div>
@@ -98,6 +170,14 @@ export const NewCommentForm: React.FC = () => {
           </button>
         </div>
       </div>
+
+      {isAddingError && (
+        <ErrorNotification
+          errorMessage="
+              Unable to add a comment. Try again!
+            "
+        />
+      )}
     </form>
   );
-};
+});
diff --git a/src/components/PostDetails.tsx b/src/components/PostDetails.tsx
index 2f82db916..9a9f7f7f3 100644
--- a/src/components/PostDetails.tsx
+++ b/src/components/PostDetails.tsx
@@ -1,107 +1,113 @@
-import React from 'react';
+// #region imports
+import React, { memo, useCallback, useEffect, useState } from 'react';
+import { CommentsList } from './CommentsList';
+import { ErrorNotification } from './ErrorNotification';
 import { Loader } from './Loader';
 import { NewCommentForm } from './NewCommentForm';
+import { deleteComment, getPostComments } from '../services/comments';
+import { Comment } from '../types/Comment';
+import { Post } from '../types/Post';
+// #endregion
+
+type Props = {
+  post: Post;
+};
+
+export const PostDetails: React.FC<Props> = memo(function PostDetails({
+  post,
+}) {
+  // #region states
+  const [comments, setComments] = useState<Comment[]>([]);
+
+  const [isLoading, setIsLoading] = useState(false);
+  const [isLoadingError, setIsLoadingError] = useState(false);
+  const [deletingErrorPostIds, setDeletingErrorPostIds] = useState<number[]>(
+    [],
+  );
+  const [isFormCommentOpen, setIsFormCommentOpen] = useState(false);
+  // #endregion
+
+  useEffect(() => {
+    if (!post) {
+      return;
+    }
+
+    setIsLoading(true);
+
+    getPostComments(post.id)
+      .then(setComments)
+      .catch(() => setIsLoadingError(true))
+      .finally(() => setIsLoading(false));
+  }, [post]);
+
+  // #region comments handlings
+  const handleCommentDelete = useCallback(
+    (id: number) => {
+      setComments(currentComments =>
+        currentComments.filter(comment => comment.id !== id),
+      );
+
+      deleteComment(id).catch(() => {
+        setDeletingErrorPostIds(currentIds => [...currentIds, id]);
+        setComments(comments);
+      });
+    },
+    [comments],
+  );
+
+  const handleCommentAdd = useCallback((newComment: Comment) => {
+    setComments(currentComments => [...currentComments, newComment]);
+  }, []);
+  // #endregion
 
-export const PostDetails: React.FC = () => {
   return (
     <div className="content" data-cy="PostDetails">
       <div className="content" data-cy="PostDetails">
         <div className="block">
-          <h2 data-cy="PostTitle">
-            #18: voluptate et itaque vero tempora molestiae
-          </h2>
-
-          <p data-cy="PostBody">
-            eveniet quo quis laborum totam consequatur non dolor ut et est
-            repudiandae est voluptatem vel debitis et magnam
-          </p>
+          <h2 data-cy="PostTitle">{`#${post.id}: ${post.title}`}</h2>
+
+          <p data-cy="PostBody">{post.body}</p>
         </div>
 
         <div className="block">
-          <Loader />
-
-          <div className="notification is-danger" data-cy="CommentsError">
-            Something went wrong
-          </div>
-
-          <p className="title is-4" data-cy="NoCommentsMessage">
-            No comments yet
-          </p>
-
-          <p className="title is-4">Comments:</p>
-
-          <article className="message is-small" data-cy="Comment">
-            <div className="message-header">
-              <a href="mailto:misha@mate.academy" data-cy="CommentAuthor">
-                Misha Hrynko
-              </a>
-              <button
-                data-cy="CommentDelete"
-                type="button"
-                className="delete is-small"
-                aria-label="delete"
-              >
-                delete button
-              </button>
-            </div>
-
-            <div className="message-body" data-cy="CommentBody">
-              Some comment
-            </div>
-          </article>
-
-          <article className="message is-small" data-cy="Comment">
-            <div className="message-header">
-              <a href="mailto:misha@mate.academy" data-cy="CommentAuthor">
-                Misha Hrynko
-              </a>
-
-              <button
-                data-cy="CommentDelete"
-                type="button"
-                className="delete is-small"
-                aria-label="delete"
-              >
-                delete button
-              </button>
-            </div>
-            <div className="message-body" data-cy="CommentBody">
-              One more comment
-            </div>
-          </article>
-
-          <article className="message is-small" data-cy="Comment">
-            <div className="message-header">
-              <a href="mailto:misha@mate.academy" data-cy="CommentAuthor">
-                Misha Hrynko
-              </a>
-
-              <button
-                data-cy="CommentDelete"
-                type="button"
-                className="delete is-small"
-                aria-label="delete"
-              >
-                delete button
-              </button>
-            </div>
-
-            <div className="message-body" data-cy="CommentBody">
-              {'Multi\nline\ncomment'}
-            </div>
-          </article>
-
-          <button
-            data-cy="WriteCommentButton"
-            type="button"
-            className="button is-link"
-          >
-            Write a comment
-          </button>
+          {isLoading && <Loader />}
+
+          {isLoadingError && (
+            <ErrorNotification errorMessage="Something went wrong" />
+          )}
+
+          {!isLoading &&
+            !isLoadingError &&
+            (!comments.length ? (
+              <p className="title is-4" data-cy="NoCommentsMessage">
+                No comments yet
+              </p>
+            ) : (
+              <CommentsList
+                comments={comments}
+                onDelete={handleCommentDelete}
+                deletingErrorPostIds={deletingErrorPostIds}
+              />
+            ))}
+
+          {!isFormCommentOpen && (
+            <button
+              data-cy="WriteCommentButton"
+              type="button"
+              className="button is-link"
+              onClick={() => {
+                setIsFormCommentOpen(true);
+              }}
+            >
+              Write a comment
+            </button>
+          )}
         </div>
 
-        <NewCommentForm />
+        {post && isFormCommentOpen && (
+          <NewCommentForm postId={post.id} onCommentAdding={handleCommentAdd} />
+        )}
       </div>
     </div>
   );
-};
+});
diff --git a/src/components/PostItem.tsx b/src/components/PostItem.tsx
new file mode 100644
index 000000000..36ed6177b
--- /dev/null
+++ b/src/components/PostItem.tsx
@@ -0,0 +1,36 @@
+import cn from 'classnames';
+import React, { memo } from 'react';
+import { Post } from '../types/Post';
+
+type Props = {
+  post: Post;
+  selectedPostId: number | null;
+  onSelect: (post: Post) => void;
+};
+
+export const PostItem: React.FC<Props> = memo(function PostItem({
+  post,
+  selectedPostId,
+  onSelect,
+}) {
+  return (
+    <tr data-cy="Post">
+      <td data-cy="PostId">{post.id}</td>
+
+      <td data-cy="PostTitle">{post.title}</td>
+
+      <td className="has-text-right is-vcentered">
+        <button
+          type="button"
+          data-cy="PostButton"
+          className={cn('button is-link', {
+            'is-light': post.id !== selectedPostId,
+          })}
+          onClick={() => onSelect(post)}
+        >
+          {post.id === selectedPostId ? 'Close' : 'Open'}
+        </button>
+      </td>
+    </tr>
+  );
+});
diff --git a/src/components/PostsList.tsx b/src/components/PostsList.tsx
index cf90f04b0..021bc6967 100644
--- a/src/components/PostsList.tsx
+++ b/src/components/PostsList.tsx
@@ -1,86 +1,54 @@
-import React from 'react';
-
-export const PostsList: React.FC = () => (
-  <div data-cy="PostsList">
-    <p className="title">Posts:</p>
-
-    <table className="table is-fullwidth is-striped is-hoverable is-narrow">
-      <thead>
-        <tr className="has-background-link-light">
-          <th>#</th>
-          <th>Title</th>
-          {/* eslint-disable-next-line jsx-a11y/control-has-associated-label */}
-          <th> </th>
-        </tr>
-      </thead>
-
-      <tbody>
-        <tr data-cy="Post">
-          <td data-cy="PostId">17</td>
-
-          <td data-cy="PostTitle">
-            fugit voluptas sed molestias voluptatem provident
-          </td>
-
-          <td className="has-text-right is-vcentered">
-            <button
-              type="button"
-              data-cy="PostButton"
-              className="button is-link is-light"
-            >
-              Open
-            </button>
-          </td>
-        </tr>
-
-        <tr data-cy="Post">
-          <td data-cy="PostId">18</td>
-
-          <td data-cy="PostTitle">
-            voluptate et itaque vero tempora molestiae
-          </td>
-
-          <td className="has-text-right is-vcentered">
-            <button
-              type="button"
-              data-cy="PostButton"
-              className="button is-link"
-            >
-              Close
-            </button>
-          </td>
-        </tr>
-
-        <tr data-cy="Post">
-          <td data-cy="PostId">19</td>
-          <td data-cy="PostTitle">adipisci placeat illum aut reiciendis qui</td>
-
-          <td className="has-text-right is-vcentered">
-            <button
-              type="button"
-              data-cy="PostButton"
-              className="button is-link is-light"
-            >
-              Open
-            </button>
-          </td>
-        </tr>
-
-        <tr data-cy="Post">
-          <td data-cy="PostId">20</td>
-          <td data-cy="PostTitle">doloribus ad provident suscipit at</td>
-
-          <td className="has-text-right is-vcentered">
-            <button
-              type="button"
-              data-cy="PostButton"
-              className="button is-link is-light"
-            >
-              Open
-            </button>
-          </td>
-        </tr>
-      </tbody>
-    </table>
-  </div>
-);
+import React, { memo, useCallback } from 'react';
+import { Post } from '../types/Post';
+import { PostItem } from './PostItem';
+
+type Props = {
+  posts: Post[];
+  selectedPostId: number | null;
+  onPostSelect: (post: Post | null) => void;
+};
+
+export const PostsList: React.FC<Props> = memo(function PostsList({
+  posts,
+  selectedPostId,
+  onPostSelect,
+}) {
+  const handleSelect = useCallback(
+    (post: Post) => {
+      if (post.id === selectedPostId) {
+        onPostSelect(null);
+      } else {
+        onPostSelect(post);
+      }
+    },
+    [selectedPostId, onPostSelect],
+  );
+
+  return (
+    <div data-cy="PostsList">
+      <p className="title">Posts:</p>
+
+      <table className="table is-fullwidth is-striped is-hoverable is-narrow">
+        <thead>
+          <tr className="has-background-link-light">
+            <th>#</th>
+            <th>Title</th>
+            {/* eslint-disable-next-line jsx-a11y/control-has-associated-label */}
+            <th> </th>
+          </tr>
+        </thead>
+
+        <tbody>
+          {posts.map(post => (
+            <PostItem
+              key={post.id}
+              post={post}
+              selectedPostId={selectedPostId}
+              onSelect={handleSelect}
+            />
+          ))}
+        </tbody>
+      </table>
+    </div>
+  );
+});
diff --git a/src/components/UserPosts.tsx b/src/components/UserPosts.tsx
new file mode 100644
index 000000000..4a42495a7
--- /dev/null
+++ b/src/components/UserPosts.tsx
@@ -0,0 +1,66 @@
+// #region imports
+import React, { memo, useEffect, useState } from 'react';
+import { getUserPosts } from '../services/posts';
+import { Post } from '../types/Post';
+import { ErrorNotification } from './ErrorNotification';
+import { Loader } from './Loader';
+import { PostsList } from './PostsList';
+// #endregion
+
+type Props = {
+  userId: number | null;
+  selectedPostId: number | null;
+  onPostSelect: (post: Post | null) => void;
+};
+
+export const UserPosts: React.FC<Props> = memo(function UserPosts({
+  userId,
+  selectedPostId,
+  onPostSelect,
+}) {
+  // #region states
+  const [posts, setPosts] = useState<Post[]>([]);
+  const [isLoading, setIsLoading] = useState(false);
+  const [isError, setIsError] = useState(false);
+  // #endregion
+
+  useEffect(() => {
+    if (!userId) {
+      return;
+    }
+
+    setIsError(false);
+    setIsLoading(true);
+
+    getUserPosts(userId)
+      .then(setPosts)
+      .catch(() => {
+        setIsError(true);
+      })
+      .finally(() => {
+        setIsLoading(false);
+      });
+  }, [userId]);
+
+  return (
+    <>
+      {isLoading && <Loader />}
+
+      {isError && <ErrorNotification errorMessage="Something went wrong!" />}
+
+      {!isLoading &&
+        !isError &&
+        (!posts.length ? (
+          <div className="notification is-warning" data-cy="NoPostsYet">
+            No posts yet
+          </div>
+        ) : (
+          <PostsList
+            posts={posts}
+            selectedPostId={selectedPostId}
+            onPostSelect={onPostSelect}
+          />
+        ))}
+    </>
+  );
+});
diff --git a/src/components/UserSelector.tsx b/src/components/UserSelector.tsx
index c89442841..a0fab807c 100644
--- a/src/components/UserSelector.tsx
+++ b/src/components/UserSelector.tsx
@@ -1,16 +1,40 @@
-import React from 'react';
+import classNames from 'classnames';
+import React, { memo, useState } from 'react';
+import { useOutsideClick } from '../hooks/useOutsideClick';
+import { User } from '../types/User';
+
+type Props = {
+  users: User[];
+  selectedId?: number | null;
+  onSelectId: (id: number) => void;
+};
+
+export const UserSelector: React.FC<Props> = memo(function UserSelector({
+  users,
+  selectedId,
+  onSelectId,
+}) {
+  const [isMenuShowed, setIsMenuShowed] = useState(false);
+
+  const dropDownRef = useOutsideClick(() => setIsMenuShowed(false));
+
+  const selectedUser = users.find(({ id }) => id === selectedId);
 
-export const UserSelector: React.FC = () => {
   return (
-    <div data-cy="UserSelector" className="dropdown is-active">
+    <div
+      ref={dropDownRef}
+      data-cy="UserSelector"
+      className="dropdown is-active"
+    >
       <div className="dropdown-trigger">
         <button
           type="button"
           className="button"
           aria-haspopup="true"
           aria-controls="dropdown-menu"
+          onClick={() => setIsMenuShowed(!isMenuShowed)}
         >
-          <span>Choose a user</span>
+          <span>{selectedUser ? selectedUser.name : 'Choose a user'}</span>
 
           <span className="icon is-small">
             <i className="fas fa-angle-down" aria-hidden="true" />
@@ -18,25 +42,27 @@ export const UserSelector: React.FC = () => {
         </button>
       </div>
 
-      <div className="dropdown-menu" id="dropdown-menu" role="menu">
-        <div className="dropdown-content">
-          <a href="#user-1" className="dropdown-item">
-            Leanne Graham
-          </a>
-          <a href="#user-2" className="dropdown-item is-active">
-            Ervin Howell
-          </a>
-          <a href="#user-3" className="dropdown-item">
-            Clementine Bauch
-          </a>
-          <a href="#user-4" className="dropdown-item">
-            Patricia Lebsack
-          </a>
-          <a href="#user-5" className="dropdown-item">
-            Chelsey Dietrich
-          </a>
+      {isMenuShowed && (
+        <div className="dropdown-menu" id="dropdown-menu" role="menu">
+          <div className="dropdown-content">
+            {users.map(({ id, name }) => (
+              <a
+                key={id}
+                href={`#user-${id}`}
+                className={classNames('dropdown-item', {
+                  'is-active': id === selectedId,
+                })}
+                onClick={() => {
+                  onSelectId(id);
+                  setIsMenuShowed(false);
+                }}
+              >
+                {name}
+              </a>
+            ))}
+          </div>
         </div>
-      </div>
+      )}
     </div>
   );
-};
+});
diff --git a/src/hooks/useOutsideClick.ts b/src/hooks/useOutsideClick.ts
new file mode 100644
index 000000000..4b903704c
--- /dev/null
+++ b/src/hooks/useOutsideClick.ts
@@ -0,0 +1,23 @@
+import { useEffect, useRef } from 'react';
+
+export const useOutsideClick = (callback: () => void) => {
+  const ref = useRef<HTMLDivElement>(null);
+
+  useEffect(() => {
+    const handleClickOutside = (event: MouseEvent | TouchEvent) => {
+      if (ref.current && !ref.current.contains(event.target as Node)) {
+        callback();
+      }
+    };
+
+    document.addEventListener('mouseup', handleClickOutside);
+    document.addEventListener('touchend', handleClickOutside);
+
+    return () => {
+      document.removeEventListener('mouseup', handleClickOutside);
+      document.removeEventListener('touchend', handleClickOutside);
+    };
+  }, [callback]);
+
+  return ref;
+};
diff --git a/src/services/comments.ts b/src/services/comments.ts
new file mode 100644
index 000000000..b3061b1a0
--- /dev/null
+++ b/src/services/comments.ts
@@ -0,0 +1,14 @@
+import { Comment, CommentData } from '../types/Comment';
+import { client } from '../utils/fetchClient';
+
+export const getPostComments = (postId: number) => {
+  return client.get<Comment[]>(`/comments?postId=${postId}`);
+};
+
+export const addPostComment = (comment: CommentData) => {
+  return client.post<Comment>('/comments', comment);
+};
+
+export const deleteComment = (commentId: number) => {
+  return client.delete(`/comments/${commentId}`);
+};
diff --git a/src/services/posts.ts b/src/services/posts.ts
new file mode 100644
index 000000000..93fadf72b
--- /dev/null
+++ b/src/services/posts.ts
@@ -0,0 +1,6 @@
+import { Post } from '../types/Post';
+import { client } from '../utils/fetchClient';
+
+export const getUserPosts = (userId: number) => {
+  return client.get<Post[]>(`/posts?userId=${userId}`);
+};
diff --git a/src/services/users.ts b/src/services/users.ts
new file mode 100644
index 000000000..816c8274b
--- /dev/null
+++ b/src/services/users.ts
@@ -0,0 +1,6 @@
+import { User } from '../types/User';
+import { client } from '../utils/fetchClient';
+
+export const getUsers = () => {
+  return client.get<User[]>('/users');
+};

From 38e01b66da4b2dfd874977e568ec66e778272042 Mon Sep 17 00:00:00 2001
From: Yuliia Nudyk <yulyayu833@gmail.com>
Date: Wed, 25 Sep 2024 16:11:50 +0300
Subject: [PATCH 2/5] solution

---
 package.json | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/package.json b/package.json
index 4b5c5ff54..4ecab066a 100644
--- a/package.json
+++ b/package.json
@@ -11,11 +11,12 @@
     "classnames": "^2.5.1",
     "react": "^18.3.1",
     "react-dom": "^18.3.1",
+    "react-hook-form": "^7.53.0",
     "react-transition-group": "^4.4.5"
   },
   "devDependencies": {
     "@cypress/react18": "^2.0.1",
-    "@mate-academy/scripts": "^1.8.5",
+    "@mate-academy/scripts": "^1.9.12",
     "@mate-academy/students-ts-config": "*",
     "@mate-academy/stylelint-config": "*",
     "@types/node": "^20.14.10",

From 51ccbc2269fc3bf953090c019990dc32d8a29b3d Mon Sep 17 00:00:00 2001
From: Yuliia Nudyk <yulyayu833@gmail.com>
Date: Wed, 25 Sep 2024 16:19:22 +0300
Subject: [PATCH 3/5] Solution

---
 package-lock.json | 24 ++++++++++++++++++++----
 1 file changed, 20 insertions(+), 4 deletions(-)

diff --git a/package-lock.json b/package-lock.json
index 3d91573bb..74155a8be 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -15,11 +15,12 @@
         "classnames": "^2.5.1",
         "react": "^18.3.1",
         "react-dom": "^18.3.1",
+        "react-hook-form": "^7.53.0",
         "react-transition-group": "^4.4.5"
       },
       "devDependencies": {
         "@cypress/react18": "^2.0.1",
-        "@mate-academy/scripts": "^1.8.5",
+        "@mate-academy/scripts": "^1.9.12",
         "@mate-academy/students-ts-config": "*",
         "@mate-academy/stylelint-config": "*",
         "@types/node": "^20.14.10",
@@ -1183,9 +1184,9 @@
       }
     },
     "node_modules/@mate-academy/scripts": {
-      "version": "1.8.5",
-      "resolved": "https://registry.npmjs.org/@mate-academy/scripts/-/scripts-1.8.5.tgz",
-      "integrity": "sha512-mHRY2FkuoYCf5U0ahIukkaRo5LSZsxrTSgMJheFoyf3VXsTvfM9OfWcZIDIDB521kdPrScHHnRp+JRNjCfUO5A==",
+      "version": "1.9.12",
+      "resolved": "https://registry.npmjs.org/@mate-academy/scripts/-/scripts-1.9.12.tgz",
+      "integrity": "sha512-/OcmxMa34lYLFlGx7Ig926W1U1qjrnXbjFJ2TzUcDaLmED+A5se652NcWwGOidXRuMAOYLPU2jNYBEkKyXrFJA==",
       "dev": true,
       "dependencies": {
         "@octokit/rest": "^17.11.2",
@@ -8720,6 +8721,21 @@
         "react": "^18.3.1"
       }
     },
+    "node_modules/react-hook-form": {
+      "version": "7.53.0",
+      "resolved": "https://registry.npmjs.org/react-hook-form/-/react-hook-form-7.53.0.tgz",
+      "integrity": "sha512-M1n3HhqCww6S2hxLxciEXy2oISPnAzxY7gvwVPrtlczTM/1dDadXgUxDpHMrMTblDOcm/AXtXxHwZ3jpg1mqKQ==",
+      "engines": {
+        "node": ">=18.0.0"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/react-hook-form"
+      },
+      "peerDependencies": {
+        "react": "^16.8.0 || ^17 || ^18 || ^19"
+      }
+    },
     "node_modules/react-is": {
       "version": "16.13.1",
       "resolved": "https://registry.npmjs.org/react-is/-/react-is-16.13.1.tgz",

From 07acf97df7ec9dbf2bb9ede9f3ddc26a96606aad Mon Sep 17 00:00:00 2001
From: Yuliia Nudyk <yulyayu833@gmail.com>
Date: Fri, 27 Sep 2024 12:53:15 +0300
Subject: [PATCH 4/5] solution-edited

---
 src/components/NewCommentForm.tsx |  8 ++++----
 src/components/PostDetails.tsx    | 12 +++++-------
 2 files changed, 9 insertions(+), 11 deletions(-)

diff --git a/src/components/NewCommentForm.tsx b/src/components/NewCommentForm.tsx
index 86334883b..99a0e7f33 100644
--- a/src/components/NewCommentForm.tsx
+++ b/src/components/NewCommentForm.tsx
@@ -1,5 +1,5 @@
 // #region imports
-import React, { memo, useState } from 'react';
+import React, { useState } from 'react';
 import cn from 'classnames';
 import { useForm } from 'react-hook-form';
 import { addPostComment } from '../services/comments';
@@ -18,10 +18,10 @@ type FormData = {
   body: string;
 };
 
-export const NewCommentForm: React.FC<Props> = memo(function NewCommentForm({
+export const NewCommentForm: React.FC<Props> = ({
   postId,
   onCommentAdding,
-}) {
+}) => {
   const {
     register,
     setValue,
@@ -180,4 +180,4 @@ export const NewCommentForm: React.FC<Props> = memo(function NewCommentForm({
       )}
     </form>
   );
-});
+};
diff --git a/src/components/PostDetails.tsx b/src/components/PostDetails.tsx
index 9a9f7f7f3..b89ee1de7 100644
--- a/src/components/PostDetails.tsx
+++ b/src/components/PostDetails.tsx
@@ -1,5 +1,5 @@
 // #region imports
-import React, { memo, useCallback, useEffect, useState } from 'react';
+import React, { useCallback, useEffect, useState } from 'react';
 import { CommentsList } from './CommentsList';
 import { ErrorNotification } from './ErrorNotification';
 import { Loader } from './Loader';
@@ -13,9 +13,7 @@ type Props = {
   post: Post;
 };
 
-export const PostDetails: React.FC<Props> = memo(function PostDetails({
-  post,
-}) {
+export const PostDetails: React.FC<Props> = ({ post }) => {
   // #region states
   const [comments, setComments] = useState<Comment[]>([]);
 
@@ -55,9 +53,9 @@ export const PostDetails: React.FC<Props> = memo(function PostDetails({
     [comments],
   );
 
-  const handleCommentAdd = useCallback((newComment: Comment) => {
+  const handleCommentAdd = (newComment: Comment) => {
     setComments(currentComments => [...currentComments, newComment]);
-  }, []);
+  };
   // #endregion
 
   return (
@@ -110,4 +108,4 @@ export const PostDetails: React.FC<Props> = memo(function PostDetails({
       </div>
     </div>
   );
-});
+};

From 2339d7d8a4aabae6ebe7d879d9bb3219fd41ebfa Mon Sep 17 00:00:00 2001
From: Yuliia Nudyk <yulyayu833@gmail.com>
Date: Fri, 27 Sep 2024 13:52:46 +0300
Subject: [PATCH 5/5] solution-edited-2

---
 src/components/NewCommentForm.tsx | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/src/components/NewCommentForm.tsx b/src/components/NewCommentForm.tsx
index 99a0e7f33..326d0b13a 100644
--- a/src/components/NewCommentForm.tsx
+++ b/src/components/NewCommentForm.tsx
@@ -54,6 +54,8 @@ export const NewCommentForm: React.FC<Props> = ({
     setIsAddingError(false);
   };
 
+  const strValidation = (value: string) => value.trim().length > 0;
+
   return (
     <form data-cy="NewCommentForm" onSubmit={onSubmit} onReset={onReset}>
       <div className="field" data-cy="NameField">
@@ -66,7 +68,10 @@ export const NewCommentForm: React.FC<Props> = ({
             type="text"
             id="comment-author-name"
             placeholder="Name Surname"
-            {...register('name', { required: true })}
+            {...register('name', {
+              required: true,
+              validate: strValidation,
+            })}
             className={cn('input', {
               'is-danger': errors.name,
             })}
@@ -139,7 +144,10 @@ export const NewCommentForm: React.FC<Props> = ({
           <textarea
             id="comment-body"
             placeholder="Type comment here"
-            {...register('body', { required: true })}
+            {...register('body', {
+              required: true,
+              validate: strValidation,
+            })}
             className={cn('textarea', {
               'is-danger': errors.body,
             })}