start

README.md

@@ -18,7 +18,7 @@ that will suggest people matching an entered text.
 - Install Prettier Extention and use this [VSCode settings](https://mate-academy.github.io/fe-program/tools/vscode/settings.json) to enable format on save.
 - Implement a solution following the [React task guideline](https://github.com/mate-academy/react_task-guideline#react-tasks-guideline).
 - Use the [React TypeScript cheat sheet](https://mate-academy.github.io/fe-program/js/extra/react-typescript).
-- Replace `<your_account>` with your Github username in the [DEMO LINK](https://<your_account>.github.io/react_autocomplete/) and add it to the PR description.
+- Replace `<your_account>` with your Github username in the [DEMO LINK](https://flyman13.github.io/react_autocomplete/) and add it to the PR description.
 - Don't remove the `data-qa` attributes. It is required for tests.
 
 ## Troubleshooting

package.json

@@ -16,7 +16,7 @@
   "devDependencies": {
     "@cypress/react18": "^2.0.1",
     "@faker-js/faker": "^8.4.1",
-    "@mate-academy/scripts": "^1.8.5",
+    "@mate-academy/scripts": "^2.1.3",
     "@mate-academy/students-ts-config": "*",
     "@mate-academy/stylelint-config": "*",
     "@types/lodash.debounce": "^4.0.9",

src/App.tsx

@@ -1,73 +1,26 @@
-import React from 'react';
+import React, { useState } from 'react';
 import './App.scss';
 import { peopleFromServer } from './data/people';
+import { Person } from './types/Person';
+import Autocomplete from './components/Autocomplete';
 
 export const App: React.FC = () => {
-  const { name, born, died } = peopleFromServer[0];
+  const [selected, setSelected] = useState<Person | null>(null);
 
   return (
     <div className="container">
       <main className="section is-flex is-flex-direction-column">
         <h1 className="title" data-cy="title">
-          {`${name} (${born} - ${died})`}
+          {selected
+            ? `${selected.name} (${selected.born} - ${selected.died})`
+            : 'No selected person'}
         </h1>
 
-        <div className="dropdown is-active">
-          <div className="dropdown-trigger">
-            <input
-              type="text"
-              placeholder="Enter a part of the name"
-              className="input"
-              data-cy="search-input"
-            />
-          </div>
-
-          <div className="dropdown-menu" role="menu" data-cy="suggestions-list">
-            <div className="dropdown-content">
-              <div className="dropdown-item" data-cy="suggestion-item">
-                <p className="has-text-link">Pieter Haverbeke</p>
-              </div>
-
-              <div className="dropdown-item" data-cy="suggestion-item">
-                <p className="has-text-link">Pieter Bernard Haverbeke</p>
-              </div>
-
-              <div className="dropdown-item" data-cy="suggestion-item">
-                <p className="has-text-link">Pieter Antone Haverbeke</p>
-              </div>
-
-              <div className="dropdown-item" data-cy="suggestion-item">
-                <p className="has-text-danger">Elisabeth Haverbeke</p>
-              </div>
-
-              <div className="dropdown-item" data-cy="suggestion-item">
-                <p className="has-text-link">Pieter de Decker</p>
-              </div>
-
-              <div className="dropdown-item" data-cy="suggestion-item">
-                <p className="has-text-danger">Petronella de Decker</p>
-              </div>
-
-              <div className="dropdown-item" data-cy="suggestion-item">
-                <p className="has-text-danger">Elisabeth Hercke</p>
-              </div>
-            </div>
-          </div>
-        </div>
-
-        <div
-          className="
-            notification
-            is-danger
-            is-light
-            mt-3
-            is-align-self-flex-start
-          "
-          role="alert"
-          data-cy="no-suggestions-message"
-        >
-          <p className="has-text-danger">No matching suggestions</p>
-        </div>
+        <Autocomplete
+          people={peopleFromServer}
+          debounceMs={300}
+          onSelected={p => setSelected(p)}
+        />
       </main>
     </div>
   );

src/components/Autocomplete.tsx

@@ -0,0 +1,156 @@
+import React, { useCallback, useEffect, useRef, useState } from 'react';
+import debounce from 'lodash.debounce';
+import { Person } from '../types/Person';
+
+type Props = {
+  people: Person[];
+  debounceMs?: number;
+  onSelected?: (person: Person | null) => void;
+};
+
+export const Autocomplete: React.FC<Props> = ({
+  people,
+  debounceMs = 300,
+  onSelected,
+}) => {
+  const [inputValue, setInputValue] = useState('');
+  const [isOpen, setIsOpen] = useState(false);
+  const [suggestions, setSuggestions] = useState<Person[]>([]);
+
+  // Keep last queried string to avoid re-filtering when identical
+  const lastQueryRef = useRef<string | null>(null);
+  // Track whether the last action was a selection (so we can avoid clearing it immediately)
+  const selectedNameRef = useRef<string | null>(null);
+
+  // Filtering function
+  const doFilter = useCallback(
+    (query: string) => {
+      const q = query.trim().toLowerCase();
+
+      if (lastQueryRef.current === q) {
+        return; // don't run again if query hasn't changed
+      }
+
+      lastQueryRef.current = q;
+
+      if (q === '') {
+        setSuggestions(people);
+
+        return;
+      }
+
+      const filtered = people.filter(p => p.name.toLowerCase().includes(q));
+
+      setSuggestions(filtered);
+    },
+    [people],
+  );
+
+  // Debounced version
+  // eslint-disable-next-line react-hooks/exhaustive-deps
+  const debouncedFilter = useCallback(
+    debounce((q: string) => doFilter(q), debounceMs),
+    [doFilter, debounceMs],
+  );
+
+  useEffect(() => {
+    return () => {
+      debouncedFilter.cancel();
+    };
+  }, [debouncedFilter]);
+
+  const onChange = (e: React.ChangeEvent<HTMLInputElement>) => {
+    const v = e.target.value;
+
+    setInputValue(v);
+
+    // if there was a selected person and the user changed the input, clear selection
+    if (selectedNameRef.current && v !== selectedNameRef.current) {
+      selectedNameRef.current = null;
+      onSelected?.(null);
+    }
+
+    // open dropdown for new input
+    setIsOpen(true);
+
+    // Trigger debounce filtering
+    debouncedFilter(v);
+  };
+
+  const onFocus = () => {
+    // when focused and empty show all
+    setIsOpen(true);
+    if (inputValue.trim() === '') {
+      // show all immediately
+      lastQueryRef.current = '';
+      setSuggestions(people);
+    } else {
+      debouncedFilter(inputValue);
+    }
+  };
+
+  const onSuggestionClick = (p: Person) => {
+    setInputValue(p.name);
+    setIsOpen(false);
+    selectedNameRef.current = p.name;
+    lastQueryRef.current = p.name.trim().toLowerCase();
+    setSuggestions([]);
+    onSelected?.(p);
+  };
+
+  const onBlur = () => {
+    // Delay closing to allow click event on suggestion to fire
+    requestAnimationFrame(() => {
+      setIsOpen(false);
+    });
+  };
+
+  return (
+    <div className={`dropdown ${isOpen ? 'is-active' : ''}`}>
+      <div className="dropdown-trigger">
+        <input
+          type="text"
+          placeholder="Enter a part of the name"
+          className="input"
+          data-cy="search-input"
+          value={inputValue}
+          onChange={onChange}
+          onFocus={onFocus}
+          onBlur={onBlur}
+        />
+      </div>
+
+      {isOpen && (
+        <div className="dropdown-menu" role="menu" data-cy="suggestions-list">
+          <div className="dropdown-content">
+            {suggestions.length > 0 ? (
+              suggestions.map(p => (
+                <div
+                  key={p.slug}
+                  className="dropdown-item"
+                  data-cy="suggestion-item"
+                  onMouseDown={ev => ev.preventDefault()}
+                  onClick={() => onSuggestionClick(p)}
+                >
+                  <p className="has-text-link">{p.name}</p>
+                </div>
+              ))
+            ) : (
+              <div className="dropdown-item">
+                <div
+                  className="notification is-danger is-light"
+                  role="alert"
+                  data-cy="no-suggestions-message"
+                >
+                  <p className="has-text-danger">No matching suggestions</p>
+                </div>
+              </div>
+            )}
+          </div>
+        </div>
+      )}
+    </div>
+  );
+};
+
+export default Autocomplete;