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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,143 @@ | ||
| import { | ||
| IonContent, | ||
| IonPage, | ||
| IonHeader, | ||
| IonToolbar, | ||
| IonTitle, | ||
| IonButton, | ||
| IonInput, | ||
| IonItem, | ||
| IonLabel, | ||
| IonList, | ||
| IonInfiniteScroll, | ||
| IonInfiniteScrollContent, | ||
| } from '@ionic/react'; | ||
| import { InputChangeEventDetail } from '@ionic/core'; | ||
| import React, { useState, useEffect, useContext } from 'react'; | ||
| import { AuthContext } from '../AuthContext'; | ||
| import { db } from '../firebaseConfig'; | ||
| import { collection, query, orderBy, startAfter, getDocs, addDoc, Timestamp, limit, DocumentData, QueryDocumentSnapshot } from 'firebase/firestore'; | ||
|
|
||
| const News: React.FC = () => { | ||
| const { user } = useContext(AuthContext); | ||
| const [articles, setArticles] = useState<DocumentData[]>([]); | ||
| const [newArticleTitle, setNewArticleTitle] = useState<string>(''); | ||
| const [newArticleContent, setNewArticleContent] = useState<string>(''); | ||
| const [lastVisible, setLastVisible] = useState<QueryDocumentSnapshot<DocumentData> | null>(null); | ||
| const [isInfiniteDisabled, setIsInfiniteDisabled] = useState(false); | ||
|
|
||
| const fetchArticles = async (lastVisibleDoc: QueryDocumentSnapshot<DocumentData> | null) => { | ||
| const newsCollection = collection(db, 'newsArticles'); | ||
| let articlesQuery; | ||
|
|
||
| if (lastVisibleDoc) { | ||
| articlesQuery = query(newsCollection, orderBy('timestamp', 'desc'), startAfter(lastVisibleDoc), limit(10)); | ||
| } else { | ||
| articlesQuery = query(newsCollection, orderBy('timestamp', 'desc'), limit(10)); | ||
| } | ||
|
|
||
| const snapshot = await getDocs(articlesQuery); | ||
| const fetchedArticles = snapshot.docs.map(doc => doc.data()); | ||
| const lastDoc = snapshot.docs[snapshot.docs.length - 1]; | ||
|
|
||
| setArticles(prev => [...prev, ...fetchedArticles]); | ||
| setLastVisible(lastDoc); | ||
|
|
||
| if (snapshot.docs.length < 10) { | ||
| setIsInfiniteDisabled(true); | ||
| } | ||
| }; | ||
|
|
||
| useEffect(() => { | ||
| fetchArticles(null); | ||
| }, []); | ||
|
|
||
| const submitUserNews = async () => { | ||
| if (!newArticleTitle?.trim() || !newArticleContent?.trim()) return; | ||
|
|
||
| const userNews = { | ||
| title: newArticleTitle, | ||
| content: newArticleContent, | ||
| author: user?.email || 'Anonymous', | ||
| timestamp: Timestamp.now() | ||
| }; | ||
|
|
||
| const userNewsCollection = collection(db, 'userNews'); | ||
| await addDoc(userNewsCollection, userNews); | ||
| }; | ||
|
|
||
| const handleTitleChange = (event: CustomEvent<InputChangeEventDetail>) => { | ||
| setNewArticleTitle(event.detail.value || ''); | ||
| }; | ||
|
|
||
| const handleContentChange = (event: CustomEvent<InputChangeEventDetail>) => { | ||
| setNewArticleContent(event.detail.value || ''); | ||
| }; | ||
|
|
||
| const loadMoreArticles = (event: CustomEvent<void>) => { | ||
| fetchArticles(lastVisible).then(() => { | ||
| const infiniteScroll = event.target as HTMLIonInfiniteScrollElement; | ||
| if (infiniteScroll) { | ||
| infiniteScroll.complete(); | ||
| } | ||
| } | ||
| ); | ||
| } | ||
|
|
||
| return ( | ||
| <IonPage className="ion-flex-offset-app"> | ||
| <IonHeader> | ||
| <IonToolbar> | ||
| <IonTitle>News</IonTitle> | ||
| </IonToolbar> | ||
| </IonHeader> | ||
| <IonContent fullscreen> | ||
| <IonList> | ||
| {articles.map((article, index) => ( | ||
| <IonItem key={index}> | ||
| <IonLabel> | ||
| <h2>{article.title}</h2> | ||
| <p>{article.contentSnippet || article.content}</p> | ||
| </IonLabel> | ||
| </IonItem> | ||
| ))} | ||
| </IonList> | ||
| {user && ( | ||
| <> | ||
| <IonItem> | ||
| <IonLabel position="stacked">Title</IonLabel> | ||
| <IonInput | ||
| value={newArticleTitle} | ||
| onIonChange={handleTitleChange} | ||
| /> | ||
| </IonItem> | ||
| <IonItem> | ||
| <IonLabel position="stacked">Content</IonLabel> | ||
| <IonInput | ||
| value={newArticleContent} | ||
| onIonChange={handleContentChange} | ||
| /> | ||
| </IonItem> | ||
| <IonButton | ||
| expand="block" | ||
| onClick={submitUserNews} | ||
| > | ||
| Submit | ||
| </IonButton> | ||
| </> | ||
| )} | ||
| <IonInfiniteScroll | ||
| onIonInfinite={loadMoreArticles} | ||
| threshold="100px" | ||
| disabled={isInfiniteDisabled} | ||
| > | ||
| <IonInfiniteScrollContent | ||
| loadingText="Loading more articles..."> | ||
| </IonInfiniteScrollContent> | ||
| </IonInfiniteScroll> | ||
| </IonContent> | ||
| </IonPage> | ||
| ); | ||
| }; | ||
|
|
||
| export default News; |
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