solution

src/App.tsx

@@ -1,16 +1,30 @@
+import React, { useState } from 'react';
 import './App.scss';
 import { MoviesList } from './components/MoviesList';
 import { NewMovie } from './components/NewMovie';
 import moviesFromServer from './api/movies.json';
 
-export const App = () => {
+// write code
+export const App: React.FC = () => {
+  const [movies, setMovies] = useState(moviesFromServer);
+
+  const handleAddMovie = (newMovie: {
+    title: string;
+    description?: string;
+    imgUrl: string;
+    imdbUrl: string;
+    imdbId: string;
+  }) => {
+    setMovies(prevMovies => [newMovie, ...prevMovies]);
+  };
+
   return (
     <div className="page">
       <div className="page-content">
-        <MoviesList movies={moviesFromServer} />
+        <MoviesList movies={movies} />
       </div>
       <div className="sidebar">
-        <NewMovie /* onAdd={(movie) => {}} */ />
+        <NewMovie onAdd={handleAddMovie} />
       </div>
     </div>
   );

src/components/NewMovie/NewMovie.tsx

@@ -1,37 +1,144 @@
-import { useState } from 'react';
+import React, { useState } from 'react';
 import { TextField } from '../TextField';
 
-export const NewMovie = () => {
-  // Increase the count after successful form submission
-  // to reset touched status of all the `Field`s
-  const [count] = useState(0);
+const urlPattern =
+  // eslint-disable-next-line max-len
+  /^((([A-Za-z]{3,9}:(?:\/\/)?)(?:[-;:&=+$,\w]+@)?[A-Za-z0-9.-]+|(?:www\.|[-;:&=+$,\w]+@)[A-Za-z0-9.-]+)((?:\/[+~%/.\w-_]*)?\??(?:[-+=&;%@,.\w_]*)#?(?:[,.!/\\\w]*))?)$/;
+
+type NewMovieProps = {
+  onAdd: (movie: {
+    title: string;
+    description?: string;
+    imgUrl: string;
+    imdbUrl: string;
+    imdbId: string;
+  }) => void;
+};
+
+export const NewMovie: React.FC<NewMovieProps> = ({ onAdd }) => {
+  const [formValues, setFormValues] = useState({
+    title: '',
+    description: '',
+    imgUrl: '',
+    imdbUrl: '',
+    imdbId: '',
+  });
+
+  const [touched, setTouched] = useState({
+    title: false,
+    imgUrl: false,
+    imdbUrl: false,
+    imdbId: false,
+  });
+
+  const [key, setKey] = useState(0);
+
+  const handleInputChange = (field: string, value: string) => {
+    setFormValues(prev => ({ ...prev, [field]: value }));
+  };
+
+  const handleBlur = (field: string) => {
+    setTouched(prev => ({ ...prev, [field]: true }));
+  };
+
+  const isFieldValid = (field: string) => {
+    const value = formValues[field];
+
+    if (field === 'imgUrl' || field === 'imdbUrl') {
+      return urlPattern.test(value.trim());
+    }
+
+    return value.trim() !== '';
+  };
+
+  const isFormValid = () =>
+    ['title', 'imgUrl', 'imdbUrl', 'imdbId'].every(field =>
+      isFieldValid(field),
+    );
+
+  const handleSubmit = (event: React.FormEvent) => {
+    event.preventDefault();
+    if (!isFormValid()) {
+      return;
+    }
+
+    onAdd(formValues);
+
+    // Reset form state
+    setFormValues({
+      title: '',
+      description: '',
+      imgUrl: '',
+      imdbUrl: '',
+      imdbId: '',
+    });
+    setTouched({
+      title: false,
+      imgUrl: false,
+      imdbUrl: false,
+      imdbId: false,
+    });
+
+    // Reset form key to reinitialize fields
+    setKey(prev => prev + 1);
+  };
 
   return (
-    <form className="NewMovie" key={count}>
+    <form className="NewMovie" key={key} onSubmit={handleSubmit}>
       <h2 className="title">Add a movie</h2>
 
       <TextField
         name="title"
         label="Title"
-        value=""
-        onChange={() => {}}
+        value={formValues.title}
+        onChange={value => handleInputChange('title', value)}
+        onBlur={() => handleBlur('title')}
         required
       />
 
-      <TextField name="description" label="Description" value="" />
+      <TextField
+        name="description"
+        label="Description"
+        value={formValues.description}
+        onChange={value => handleInputChange('description', value)}
+      />
 
-      <TextField name="imgUrl" label="Image URL" value="" />
+      <TextField
+        name="imgUrl"
+        label="Image URL"
+        value={formValues.imgUrl}
+        onChange={value => handleInputChange('imgUrl', value)}
+        onBlur={() => handleBlur('imgUrl')}
+        required
+        validationCallback={value => urlPattern.test(value)}
+      />
 
-      <TextField name="imdbUrl" label="Imdb URL" value="" />
+      <TextField
+        name="imdbUrl"
+        label="IMDB URL"
+        value={formValues.imdbUrl}
+        onChange={value => handleInputChange('imdbUrl', value)}
+        onBlur={() => handleBlur('imdbUrl')}
+        required
+        validationCallback={value => urlPattern.test(value)}
+      />
 
-      <TextField name="imdbId" label="Imdb ID" value="" />
+      <TextField
+        name="imdbId"
+        label="IMDB ID"
+        value={formValues.imdbId}
+        onChange={value => handleInputChange('imdbId', value)}
+        onBlur={() => handleBlur('imdbId')}
+        required
+      />
 
       <div className="field is-grouped">
         <div className="control">
           <button
             type="submit"
             data-cy="submit-button"
             className="button is-link"
+            disabled={!isFormValid()}
           >
             Add
           </button>

src/components/TextField/TextField.tsx

@@ -8,6 +8,7 @@ type Props = {
   placeholder?: string;
   required?: boolean;
   onChange?: (newValue: string) => void;
+  validationCallback?: (value: string) => boolean; // for custom validation
 };
 
 function getRandomDigits() {
@@ -21,13 +22,16 @@ export const TextField: React.FC<Props> = ({
   placeholder = `Enter ${label}`,
   required = false,
   onChange = () => {},
+  validationCallback = () => true, // default to always valid
 }) => {
-  // generate a unique id once on component load
   const [id] = useState(() => `${name}-${getRandomDigits()}`);
 
-  // To show errors only if the field was touched (onBlur)
+  // Track whether the field was touched
   const [touched, setTouched] = useState(false);
-  const hasError = touched && required && !value;
+
+  // Check if the field has an error
+  const hasError =
+    touched && ((required && !value.trim()) || !validationCallback(value));
 
   return (
     <div className="field">
@@ -41,12 +45,12 @@ export const TextField: React.FC<Props> = ({
           id={id}
           data-cy={`movie-${name}`}
           className={classNames('input', {
-            'is-danger': hasError,
+            'is-danger': hasError, // Add red border for errors
           })}
           placeholder={placeholder}
           value={value}
           onChange={event => onChange(event.target.value)}
-          onBlur={() => setTouched(true)}
+          onBlur={() => setTouched(true)} // Mark as touched on blur
         />
       </div>