From 460a06e782e188707b08165829cc8184d35084ef Mon Sep 17 00:00:00 2001
From: Tanya Baletska <t.baletska@gmail.com>
Date: Fri, 8 Nov 2024 16:26:03 +0200
Subject: [PATCH] add task solution

---
 package-lock.json                 |  12 +-
 package.json                      |   2 +-
 src/App.tsx                       | 132 ++++++++++++++------
 src/components/NewCommentForm.tsx | 173 +++++++++++++++++++-------
 src/components/PostDetails.tsx    | 198 +++++++++++++++++-------------
 src/components/PostsList.tsx      | 138 +++++++++------------
 src/components/UserSelector.tsx   |  88 ++++++++++---
 src/utils/fetchClient.ts          |  28 +++++
 8 files changed, 500 insertions(+), 271 deletions(-)

diff --git a/package-lock.json b/package-lock.json
index 3d91573bb..f6d70b30a 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -19,7 +19,7 @@
       },
       "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",
@@ -1183,10 +1183,11 @@
       }
     },
     "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,
+      "license": "MIT",
       "dependencies": {
         "@octokit/rest": "^17.11.2",
         "@types/get-port": "^4.2.0",
@@ -3256,7 +3257,8 @@
     "node_modules/classnames": {
       "version": "2.5.1",
       "resolved": "https://registry.npmjs.org/classnames/-/classnames-2.5.1.tgz",
-      "integrity": "sha512-saHYOzhIQs6wy2sVxTM6bUDsQO4F50V9RQ22qBpEdCW+I+/Wmke2HOl6lS6dTpdxVhb88/I6+Hs+438c3lfUow=="
+      "integrity": "sha512-saHYOzhIQs6wy2sVxTM6bUDsQO4F50V9RQ22qBpEdCW+I+/Wmke2HOl6lS6dTpdxVhb88/I6+Hs+438c3lfUow==",
+      "license": "MIT"
     },
     "node_modules/clean-stack": {
       "version": "2.2.0",
diff --git a/package.json b/package.json
index 4b5c5ff54..9786f26cd 100644
--- a/package.json
+++ b/package.json
@@ -15,7 +15,7 @@
   },
   "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",
diff --git a/src/App.tsx b/src/App.tsx
index 017957182..29536be4c 100644
--- a/src/App.tsx
+++ b/src/App.tsx
@@ -1,4 +1,8 @@
-import classNames from 'classnames';
+import { useEffect, useState } from 'react';
+import { getUsers, getUserPosts } from './utils/fetchClient';
+import { User } from './types/User';
+import { Post } from './types/Post';
+import cn from 'classnames';
 
 import 'bulma/css/bulma.css';
 import '@fortawesome/fontawesome-free/css/all.css';
@@ -9,52 +13,102 @@ 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>
+export const App: React.FC = () => {
+  const [users, setUsers] = useState<User[]>([]);
+  const [posts, setPosts] = useState<Post[]>([]);
+  const [currUser, setCurrUser] = useState<User | null>(null);
+  const [currPost, setCurrPost] = useState<Post | null>(null);
+  const [openModal, setOpenModal] = useState(false);
+  const [loading, setLoading] = useState(false);
+  const [error, setError] = useState(false);
 
-            <div className="block" data-cy="MainContent">
-              <p data-cy="NoSelectedUser">No user selected</p>
+  const searchUserPosts = (userId: number) => {
+    getUserPosts(userId)
+      .then(setPosts)
+      .catch(() => setError(true))
+      .finally(() => setLoading(false));
+  };
 
-              <Loader />
+  useEffect(() => {
+    getUsers().then(setUsers);
+  }, []);
 
-              <div
-                className="notification is-danger"
-                data-cy="PostsLoadingError"
-              >
-                Something went wrong!
-              </div>
+  useEffect(() => {
+    if (currUser) {
+      setLoading(true);
+      searchUserPosts(currUser.id);
+      setCurrPost(null);
+      setOpenModal(false);
+    }
+  }, [currUser]);
 
-              <div className="notification is-warning" data-cy="NoPostsYet">
-                No posts yet
+  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
+                  users={users}
+                  currUser={currUser}
+                  setCurrUser={setCurrUser}
+                />
               </div>
 
-              <PostsList />
+              <div className="block" data-cy="MainContent">
+                {!currUser && <p data-cy="NoSelectedUser">No user selected</p>}
+
+                {!loading &&
+                  !error &&
+                  currUser &&
+                  (posts.length > 0 ? (
+                    <PostsList
+                      posts={posts}
+                      currPost={currPost}
+                      setOpenModal={setOpenModal}
+                      setCurrPost={setCurrPost}
+                    />
+                  ) : (
+                    <div
+                      className="notification is-warning"
+                      data-cy="NoPostsYet"
+                    >
+                      No posts yet
+                    </div>
+                  ))}
+
+                {loading && <Loader />}
+
+                {error && (
+                  <div
+                    className="notification is-danger"
+                    data-cy="PostsLoadingError"
+                  >
+                    Something went wrong!
+                  </div>
+                )}
+              </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', 'is-8-desktop', 'Sidebar', {
+              'Sidebar--open': currPost,
+            })}
+          >
+            <div className="tile is-child box is-success ">
+              {currPost && (
+                <PostDetails
+                  currPost={currPost}
+                  openModal={openModal}
+                  setOpenModal={setOpenModal}
+                />
+              )}
+            </div>
           </div>
         </div>
       </div>
-    </div>
-  </main>
-);
+    </main>
+  );
+};
diff --git a/src/components/NewCommentForm.tsx b/src/components/NewCommentForm.tsx
index 73a8a0b45..3d8b9ec96 100644
--- a/src/components/NewCommentForm.tsx
+++ b/src/components/NewCommentForm.tsx
@@ -1,99 +1,188 @@
-import React from 'react';
+import React, { useState, ChangeEvent, FormEvent } from 'react';
+import { CommentData } from '../types/Comment';
+import cn from 'classnames';
+
+type Props = {
+  loader: boolean;
+  onAdd: (newComment: CommentData) => Promise<void>;
+};
+
+export const NewCommentForm: React.FC<Props> = ({ loader, onAdd }) => {
+  const [newComment, setNewComment] = useState<CommentData>({
+    name: '',
+    email: '',
+    body: '',
+  });
+  const [touched, setTouched] = useState({
+    name: false,
+    email: false,
+    body: false,
+  });
+
+  const handleInputChange = (
+    e: ChangeEvent<HTMLInputElement | HTMLTextAreaElement>,
+  ) => {
+    const { name, value } = e.target;
+
+    setNewComment(prevComment => ({ ...prevComment, [name]: value }));
+    setTouched(prevTouched => ({ ...prevTouched, [name]: true }));
+  };
+
+  const handleReset = () => {
+    setNewComment({
+      name: '',
+      email: '',
+      body: '',
+    });
+    setTouched({
+      name: false,
+      email: false,
+      body: false,
+    });
+  };
+
+  const handleSubmit = async (e: FormEvent) => {
+    e.preventDefault();
+
+    const isNameEmpty = newComment.name === '';
+    const isEmailEmpty = newComment.email === '';
+    const isBodyEmpty = newComment.body === '';
+
+    if (isNameEmpty || isEmailEmpty || isBodyEmpty) {
+      setTouched({
+        name: isNameEmpty,
+        email: isEmailEmpty,
+        body: isBodyEmpty,
+      });
+
+      return;
+    }
+
+    onAdd(newComment);
+    setNewComment(prevComment => ({ ...prevComment, body: '' }));
+    setTouched({ name: false, email: false, body: false });
+  };
 
-export const NewCommentForm: React.FC = () => {
   return (
-    <form data-cy="NewCommentForm">
+    <form data-cy="NewCommentForm" onSubmit={handleSubmit}>
       <div className="field" data-cy="NameField">
         <label className="label" htmlFor="comment-author-name">
           Author Name
         </label>
-
         <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"
+            value={newComment.name}
+            onChange={handleInputChange}
+            className={cn('input', {
+              'is-danger': touched.name && newComment.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>
         </div>
-
-        <p className="help is-danger" data-cy="ErrorMessage">
-          Name is required
-        </p>
+        {touched.name && newComment.name === '' && (
+          <>
+            <span
+              className="icon is-small is-right has-text-danger"
+              data-cy="ErrorIcon"
+            >
+              <i className="fas fa-exclamation-triangle" />
+            </span>
+            <p className="help is-danger" data-cy="ErrorMessage">
+              Name is required
+            </p>
+          </>
+        )}
       </div>
 
       <div className="field" data-cy="EmailField">
         <label className="label" htmlFor="comment-author-email">
           Author Email
         </label>
-
         <div className="control has-icons-left has-icons-right">
           <input
-            type="text"
+            type="email"
             name="email"
             id="comment-author-email"
             placeholder="email@test.com"
-            className="input is-danger"
+            value={newComment.email}
+            onChange={handleInputChange}
+            className={cn('input', {
+              'is-danger': touched.email && newComment.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>
         </div>
-
-        <p className="help is-danger" data-cy="ErrorMessage">
-          Email is required
-        </p>
+        {touched.email && newComment.email === '' && (
+          <>
+            <span
+              className="icon is-small is-right has-text-danger"
+              data-cy="ErrorIcon"
+            >
+              <i className="fas fa-exclamation-triangle" />
+            </span>
+            <p className="help is-danger" data-cy="ErrorMessage">
+              Email is required
+            </p>
+          </>
+        )}
       </div>
 
       <div className="field" data-cy="BodyField">
         <label className="label" htmlFor="comment-body">
           Comment Text
         </label>
-
         <div className="control">
           <textarea
             id="comment-body"
             name="body"
             placeholder="Type comment here"
-            className="textarea is-danger"
+            value={newComment.body}
+            onChange={handleInputChange}
+            className={cn('textarea', {
+              'is-danger': touched.body && newComment.body === '',
+            })}
           />
         </div>
-
-        <p className="help is-danger" data-cy="ErrorMessage">
-          Enter some text
-        </p>
+        {touched.body && newComment.body === '' && (
+          <>
+            <span
+              className="icon is-small is-right has-text-danger"
+              data-cy="ErrorIcon"
+            >
+              <i className="fas fa-exclamation-triangle" />
+            </span>
+            <p className="help is-danger" data-cy="ErrorMessage">
+              Text is required
+            </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': loader,
+            })}
+          >
             Add
           </button>
         </div>
-
         <div className="control">
-          {/* eslint-disable-next-line react/button-has-type */}
-          <button type="reset" className="button is-link is-light">
+          <button
+            type="reset"
+            className="button is-link is-light"
+            onClick={handleReset}
+          >
             Clear
           </button>
         </div>
diff --git a/src/components/PostDetails.tsx b/src/components/PostDetails.tsx
index 2f82db916..8954fb7e2 100644
--- a/src/components/PostDetails.tsx
+++ b/src/components/PostDetails.tsx
@@ -1,106 +1,132 @@
-import React from 'react';
+import React, { useEffect, useState } from 'react';
 import { Loader } from './Loader';
+import { Post } from '../types/Post';
 import { NewCommentForm } from './NewCommentForm';
+import { getComments, addComment, deleteComment } from '../utils/fetchClient';
+import { Comment, CommentData } from '../types/Comment';
 
-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>
-        </div>
+type Props = {
+  currPost: Post | null;
+  openModal: boolean;
+  setOpenModal: (value: boolean) => void;
+};
 
-        <div className="block">
-          <Loader />
+export const PostDetails: React.FC<Props> = ({
+  currPost,
+  openModal,
+  setOpenModal = () => {},
+}) => {
+  const [comments, setComments] = useState<Comment[]>([]);
+  const [error, setError] = useState(false);
+  const [btnLoader, setBtnLoader] = useState(false);
+  const [commentLoader, setCommentLoader] = useState(false);
 
-          <div className="notification is-danger" data-cy="CommentsError">
-            Something went wrong
-          </div>
+  const onAdd = ({ name, email, body }: CommentData) => {
+    setBtnLoader(true);
 
-          <p className="title is-4" data-cy="NoCommentsMessage">
-            No comments yet
-          </p>
+    const postId = currPost?.id || 0;
 
-          <p className="title is-4">Comments:</p>
+    return addComment({ postId, name, email, body })
+      .then(newComment => setComments([...comments, newComment]))
+      .catch(() => {
+        setError(true);
+      })
+      .finally(() => setBtnLoader(false));
+  };
 
-          <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>
+  const onDelete = (commentId: number) => {
+    setComments(currCommenst => {
+      return currCommenst.filter(comment => comment.id !== commentId);
+    });
 
-            <div className="message-body" data-cy="CommentBody">
-              Some comment
-            </div>
-          </article>
+    deleteComment(commentId)
+      .then(() => {})
+      .catch(() => setError(true));
+  };
 
-          <article className="message is-small" data-cy="Comment">
-            <div className="message-header">
-              <a href="mailto:misha@mate.academy" data-cy="CommentAuthor">
-                Misha Hrynko
-              </a>
+  useEffect(() => {
+    if (currPost) {
+      setCommentLoader(true);
+      getComments(currPost.id)
+        .then(setComments)
+        .catch(() => setError(true))
+        .finally(() => setCommentLoader(false));
+    }
+  }, [currPost, setComments]);
 
-              <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>
+  return (
+    <div className="content" data-cy="PostDetails">
+      <div className="content" data-cy="PostDetails">
+        <div className="block">
+          <h2 data-cy="PostTitle">{`#${currPost?.id}: ${currPost?.title}`}</h2>
 
-          <article className="message is-small" data-cy="Comment">
-            <div className="message-header">
-              <a href="mailto:misha@mate.academy" data-cy="CommentAuthor">
-                Misha Hrynko
-              </a>
+          <p data-cy="PostBody">{currPost?.body}</p>
+        </div>
 
-              <button
-                data-cy="CommentDelete"
-                type="button"
-                className="delete is-small"
-                aria-label="delete"
-              >
-                delete button
-              </button>
+        <div className="block">
+          {commentLoader && <Loader />}
+          {error && (
+            <div className="notification is-danger" data-cy="CommentsError">
+              Something went wrong
             </div>
+          )}
 
-            <div className="message-body" data-cy="CommentBody">
-              {'Multi\nline\ncomment'}
-            </div>
-          </article>
+          {!commentLoader && !error && (
+            <>
+              {comments.length > 0 ? (
+                <>
+                  <p className="title is-4">Comments:</p>
 
-          <button
-            data-cy="WriteCommentButton"
-            type="button"
-            className="button is-link"
-          >
-            Write a comment
-          </button>
-        </div>
+                  {comments.map(comment => (
+                    <article
+                      className="message is-small"
+                      data-cy="Comment"
+                      key={comment.id}
+                    >
+                      <div className="message-header">
+                        <a
+                          href={`mailto:${comment.email}`}
+                          data-cy="CommentAuthor"
+                        >
+                          {comment.name}
+                        </a>
+                        <button
+                          data-cy="CommentDelete"
+                          type="button"
+                          className="delete is-small"
+                          aria-label="delete"
+                          onClick={() => onDelete(comment.id)}
+                        >
+                          delete button
+                        </button>
+                      </div>
 
-        <NewCommentForm />
+                      <div className="message-body" data-cy="CommentBody">
+                        {comment.body}
+                      </div>
+                    </article>
+                  ))}
+                </>
+              ) : (
+                <p className="title is-4" data-cy="NoCommentsMessage">
+                  No comments yet
+                </p>
+              )}
+              {openModal ? (
+                <NewCommentForm onAdd={onAdd} loader={btnLoader} />
+              ) : (
+                <button
+                  data-cy="WriteCommentButton"
+                  type="button"
+                  className="button is-link"
+                  onClick={() => setOpenModal(true)}
+                >
+                  Write a comment
+                </button>
+              )}
+            </>
+          )}
+        </div>
       </div>
     </div>
   );
diff --git a/src/components/PostsList.tsx b/src/components/PostsList.tsx
index cf90f04b0..fd193cd8f 100644
--- a/src/components/PostsList.tsx
+++ b/src/components/PostsList.tsx
@@ -1,86 +1,66 @@
 import React from 'react';
+import { Post } from '../types/Post';
+import cn from 'classnames';
 
-export const PostsList: React.FC = () => (
-  <div data-cy="PostsList">
-    <p className="title">Posts:</p>
+type Props = {
+  posts: Post[];
+  currPost: Post | null;
+  setOpenModal: (value: boolean) => void;
+  setCurrPost: (postId: Post | null) => void;
+};
 
-    <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>
+export const PostsList: React.FC<Props> = ({
+  posts,
+  currPost,
+  setOpenModal = () => {},
+  setCurrPost = () => {},
+}) => {
+  const onOpenPost = (post: Post) => {
+    const isSamePost = currPost && currPost?.id === post.id;
 
-      <tbody>
-        <tr data-cy="Post">
-          <td data-cy="PostId">17</td>
+    if (isSamePost) {
+      setCurrPost(null);
+    } else {
+      setCurrPost(post);
+      setOpenModal(false);
+    }
+  };
 
-          <td data-cy="PostTitle">
-            fugit voluptas sed molestias voluptatem provident
-          </td>
+  return (
+    <div data-cy="PostsList">
+      <p className="title">Posts:</p>
 
-          <td className="has-text-right is-vcentered">
-            <button
-              type="button"
-              data-cy="PostButton"
-              className="button is-link is-light"
-            >
-              Open
-            </button>
-          </td>
-        </tr>
+      <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>
 
-        <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>
-);
+        <tbody>
+          {posts.map(post => (
+            <tr data-cy="Post" key={post.id}>
+              <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"
+                  onClick={() => onOpenPost(post)}
+                  className={cn('button is-link', {
+                    'is-light': currPost?.id !== post.id,
+                  })}
+                >
+                  {currPost?.id === post.id ? 'Close' : 'Open'}
+                </button>
+              </td>
+            </tr>
+          ))}
+        </tbody>
+      </table>
+    </div>
+  );
+};
diff --git a/src/components/UserSelector.tsx b/src/components/UserSelector.tsx
index c89442841..cbb1572c2 100644
--- a/src/components/UserSelector.tsx
+++ b/src/components/UserSelector.tsx
@@ -1,16 +1,69 @@
-import React from 'react';
+import React, { useState, useRef, useEffect } from 'react';
+import { User } from '../types/User';
+import cn from 'classnames';
+
+type Props = {
+  users: User[];
+  currUser: User | null;
+  setCurrUser: (currUser: User) => void;
+};
+
+export const UserSelector: React.FC<Props> = ({
+  users,
+  currUser,
+  setCurrUser = () => {},
+}) => {
+  const [menuIsVisible, setMenuIsVisible] = useState(false);
+
+  const dropdownRef = useRef(null);
+
+  const onOutsideClick = (event: MouseEvent) => {
+    if (
+      dropdownRef.current &&
+      !(dropdownRef.current as HTMLElement).contains(event.target as Node)
+    ) {
+      setMenuIsVisible(false);
+    }
+  };
+
+  useEffect(() => {
+    document.addEventListener('mousedown', onOutsideClick);
+
+    return () => {
+      document.removeEventListener('mousedown', onOutsideClick);
+    };
+  }, []);
+
+  const selectUserFunc = (
+    e: React.MouseEvent<HTMLAnchorElement, MouseEvent>,
+    user: User,
+  ) => {
+    e.preventDefault();
+    setCurrUser(user);
+    setMenuIsVisible(false);
+  };
 
-export const UserSelector: React.FC = () => {
   return (
-    <div data-cy="UserSelector" className="dropdown is-active">
+    <div
+      data-cy="UserSelector"
+      ref={dropdownRef}
+      className={cn('dropdown', {
+        'is-active': users.length > 0 && menuIsVisible,
+      })}
+    >
       <div className="dropdown-trigger">
         <button
           type="button"
           className="button"
           aria-haspopup="true"
           aria-controls="dropdown-menu"
+          onClick={() => setMenuIsVisible(true)}
         >
-          <span>Choose a user</span>
+          <span>
+            {currUser && currUser.name.length > 0
+              ? currUser.name
+              : 'Choose a user'}
+          </span>
 
           <span className="icon is-small">
             <i className="fas fa-angle-down" aria-hidden="true" />
@@ -20,21 +73,18 @@ export const UserSelector: React.FC = () => {
 
       <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>
+          {users.map(user => (
+            <a
+              key={user.id}
+              href={`user-${user.id}`}
+              onClick={e => selectUserFunc(e, user)}
+              className={cn('dropdown-item', {
+                'is-active': user.id === currUser?.id,
+              })}
+            >
+              {user.name}
+            </a>
+          ))}
         </div>
       </div>
     </div>
diff --git a/src/utils/fetchClient.ts b/src/utils/fetchClient.ts
index feb6915ce..ff84bb8ef 100644
--- a/src/utils/fetchClient.ts
+++ b/src/utils/fetchClient.ts
@@ -1,3 +1,6 @@
+import { Comment } from '../types/Comment';
+import { User } from '../types/User';
+import { Post } from '../types/Post';
 /* eslint-disable @typescript-eslint/no-explicit-any */
 const BASE_URL = 'https://mate.academy/students-api';
 
@@ -38,3 +41,28 @@ export const client = {
   patch: <T>(url: string, data: any) => request<T>(url, 'PATCH', data),
   delete: (url: string) => request(url, 'DELETE'),
 };
+
+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,
+  name,
+  email,
+  body,
+}: Omit<Comment, 'id'>) => {
+  return client.post<Comment>('/comments', { postId, name, email, body });
+};
+
+export const deleteComment = (commentId: number) => {
+  return client.delete(`/comments/${commentId}`);
+};