first solution

src/App.tsx

@@ -1,16 +1,20 @@
 import './App.scss';
+import { useState } from 'react';
 import { MoviesList } from './components/MoviesList';
 import { NewMovie } from './components/NewMovie';
+import { Movie } from './types/Movie';
 import moviesFromServer from './api/movies.json';
 
-export const App = () => {
+export const App: React.FC = () => {
+  const [movies, setMovies] = useState<Movie[]>(moviesFromServer);
+
   return (
     <div className="page">
       <div className="page-content">
-        <MoviesList movies={moviesFromServer} />
+        <MoviesList movies={movies} />
       </div>
       <div className="sidebar">
-        <NewMovie /* onAdd={(movie) => {}} */ />
+        <NewMovie onAdd={movie => setMovies([...movies, movie])} />
       </div>
     </div>
   );

src/components/NewMovie/NewMovie.tsx

@@ -1,45 +1,92 @@
 import { useState } from 'react';
 import { TextField } from '../TextField';
+import { Movie } from '../../types/Movie';
 
-export const NewMovie = () => {
+interface Props {
+  onAdd: (movie: Movie) => void;
+}
+
+export const NewMovie: React.FC<Props> = ({ onAdd }) => {
   // Increase the count after successful form submission
   // to reset touched status of all the `Field`s
-  const [count] = useState(0);
+  const [count, setCount] = useState(0);
+  const [title, setTitle] = useState('');
+  const [description, setDescription] = useState('');
+  const [imgUrl, setImgUrl] = useState('');
+  const [imdbUrl, setImdbUrl] = useState('');
+  const [imdbId, setImdbId] = useState('');
+
+  const reset = () => {
+    setTitle('');
+    setDescription('');
+    setImgUrl('');
+    setImdbUrl('');
+    setImdbId('');
+  };
+
+  const handleSubmit = (event: React.FormEvent<HTMLFormElement>) => {
+    event.preventDefault();
+
+    onAdd({
+      title,
+      description,
+      imgUrl,
+      imdbUrl,
+      imdbId,
+    });
+
+    setCount(newCount => newCount + 1);
+
+    reset();
+  };
+
+  const isDisabled = !title || !imgUrl || !imdbUrl || !imdbId;
 
   return (
-    <form className="NewMovie" key={count}>
+    <form
+      className="NewMovie"
+      key={count}
+      onSubmit={handleSubmit}
+    >
       <h2 className="title">Add a movie</h2>
 
       <TextField
         name="title"
         label="Title"
-        value=""
-        onChange={() => {}}
+        value={title}
+        onChange={setTitle}
         required
       />
 
       <TextField
         name="description"
         label="Description"
-        value=""
+        value={description}
+        onChange={setDescription}
       />
 
       <TextField
         name="imgUrl"
         label="Image URL"
-        value=""
+        value={imgUrl}
+        onChange={setImgUrl}
+        required
       />
 
       <TextField
         name="imdbUrl"
         label="Imdb URL"
-        value=""
+        value={imdbUrl}
+        onChange={setImdbUrl}
+        required
       />
 
       <TextField
         name="imdbId"
         label="Imdb ID"
-        value=""
+        value={imdbId}
+        onChange={setImdbId}
+        required
       />
 
       <div className="field is-grouped">
@@ -48,6 +95,7 @@ export const NewMovie = () => {
             type="submit"
             data-cy="submit-button"
             className="button is-link"
+            disabled={isDisabled}
           >
             Add
           </button>