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HomeScreen.js
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HomeScreen.js
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import React, { useEffect, useState, useRef, useCallback } from "react";
import {
View,
FlatList,
StyleSheet,
useWindowDimensions,
Dimensions,
ActivityIndicator,
Modal,
TouchableWithoutFeedback,
TouchableOpacity,
Text,
} from "react-native";
import { db, auth } from "../firebase";
import {
collection,
onSnapshot,
query,
getDocs,
orderBy,
where,
getDoc,
doc,
} from "firebase/firestore";
import PostHeader from "../components/PostHeader";
import AdOverlay from "../components/AdOverlay";
import PostImage from "../components/PostImage";
import PostFooter from "../components/PostFooter";
import Purchases from "react-native-purchases";
import Video from "react-native-video";
import { useFocusEffect, useIsFocused } from "@react-navigation/native";
import HapticFeedback from "react-native-haptic-feedback";
import ActionBar from "../components/ActionBar";
import BlurryContainer from "../components/BlurryContainer";
import Comments from "../components/Comments";
const HomeScreen = ({ navigation }) => {
const [posts, setPosts] = useState([]);
// const postsRef = collection(db, "posts");
const postsQuery = query(
collection(db, "posts"),
orderBy("createdAt", "desc")
);
// const postsQuery = query(
// collection(db, "posts"),
// orderBy("likesCount", "asc")
// );
const [followedUsers, setFollowedUsers] = useState([]);
const currentUser = auth.currentUser;
const fetchFollowedUsers = async () => {
const userId = auth.currentUser ? auth.currentUser.uid : "";
const followingsRef = collection(db, "users", userId, "Followings");
const followingsSnapshot = await getDocs(followingsRef);
const users = followingsSnapshot.docs.map((doc) => doc.id);
// console.log(users);
setFollowedUsers(users);
fetchFeedVideos(users);
};
const [feedVideos, setFeedVideos] = useState([]);
const fetchFeedVideos = async (followedUsers) => {
// console.log("fetchFeedVideos called with:", followedUsers);
const FollowedPosts = [];
for (const userId of followedUsers) {
const userPostsRef = collection(db, "posts");
const q = query(userPostsRef, where("uid", "==", userId));
const userPostsSnapshot = await getDocs(q);
const userDoc = await getDoc(doc(db, "users", userId));
const userData = userDoc.data();
// userPostsSnapshot.docs.forEach((doc) => {
// const postData = { id: doc.id, ...doc.data() };
// // console.log("Post Data:", postData);
// FollowedPosts.push(postData);
// });
userPostsSnapshot.docs.forEach((doc) => {
const postData = { id: doc.id, ...doc.data(), user: userData };
FollowedPosts.push(postData);
});
}
// console.log("All Followed posts:", FollowedPosts);
if (FollowedPosts.length > 0 && ads.length > 0) {
setFeedVideos(prepareDataWithAds(FollowedPosts, ads));
} else {
setFeedVideos(FollowedPosts);
}
};
useEffect(() => {
fetchFollowedUsers();
}, []);
const [isFollowingFeed, setIsFollowingFeed] = useState(true);
const handleFeedSwitch = () => {
setIsFollowingFeed((prevState) => !prevState);
};
const { width, height } = useWindowDimensions();
const [viewableItems, setViewableItems] = useState([]);
const [ads, setAds] = useState([]);
const [currentAdIndex, setCurrentAdIndex] = useState(0);
const [isAdPlaying, setIsAdPlaying] = useState(false);
const flatListRef = useRef(null);
const [adPlaying, setAdPlaying] = useState(false);
const [dataWithAds, setDataWithAds] = useState([]);
const [adPlayedIds, setAdPlayedIds] = useState([]);
const [selectedPost, setSelectedPost] = useState(null);
const handleCommentPress = (postId) => {
setSelectedPost(postId);
};
const enableScrolling = () => {
if (flatListRef.current) {
flatListRef.current.setNativeProps({ scrollEnabled: true });
}
};
const setupPurchases = async () => {
try {
await Purchases.setup("sk_OdEGBmHNqfqMfimPHzlkgHQTWFXvf");
// console.log("Purchases SDK initialized successfully");
} catch (e) {
// console.log("Error initializing Purchases SDK", e);
}
};
const triggerHapticFeedback = () => {
const options = {
enableVibrateFallback: true,
ignoreAndroidSystemSettings: false,
};
HapticFeedback.trigger("impactLight");
};
const prepareDataWithAds = (data, ads) => {
const newData = [...data];
let adIndex = 0;
for (let i = 1; i <= newData.length; i++) {
if (i % 4 === 0 && ads.length > 0) {
newData.splice(i, 0, { ...ads[adIndex % ads.length], isAd: true });
adIndex++;
}
}
return newData;
};
useEffect(() => {
setupPurchases();
const unsubscribe = onSnapshot(postsQuery, async (querySnapshot) => {
const postList = [];
for (const docSnapshot of querySnapshot.docs) {
const postData = docSnapshot.data();
const userDocRef = doc(db, "users", postData.uid);
const userDocSnapshot = await getDoc(userDocRef);
const userData = userDocSnapshot.data();
postList.push({ id: docSnapshot.id, ...postData, user: userData });
}
setPosts(postList);
});
const adsRef = collection(db, "advertisements");
const unsubscribeAds = onSnapshot(adsRef, (querySnapshot) => {
const adsList = [];
querySnapshot.forEach((doc) => {
adsList.push({ ...doc.data(), id: doc.id });
});
setAds(adsList);
});
return () => {
unsubscribe();
};
}, []);
useEffect(() => {
if (posts && ads && posts.length > 0 && ads.length > 0) {
setDataWithAds(prepareDataWithAds(posts, ads));
} else {
setDataWithAds(posts);
}
}, [posts, ads]);
const handleAdEnd = (adId) => {
setIsAdPlaying(false);
setCurrentAdIndex((prevIndex) => prevIndex + 1);
setAdPlayedIds((prevAdPlayedIds) => [...prevAdPlayedIds, adId]);
setDataWithAds((prevData) =>
prevData.filter((item) => !item.isAd || item.id !== adId)
);
};
useEffect(() => {
setIsAdPlaying(false);
}, [currentAdIndex]);
const PostVideo = ({
videoUrl,
id,
autoplay,
isAd,
isInView,
flatListRef,
handleAdEnd,
}) => {
const isFocused = useIsFocused();
const [loading, setLoading] = useState(true);
const [adPlayed, setAdPlayed] = useState(false);
const handleLoadStart = () => {
setLoading(true);
};
const handleLoad = () => {
setLoading(false);
};
const handleProgress = () => {
setLoading(false);
};
const handleEnd = () => {
// console.log("Ad video has ended");
if (isAd) {
if (typeof handleAdEnd === "function") {
handleAdEnd(id); // Pass the adId as a parameter
}
}
};
return (
<View style={styles.container}>
<Video
source={{ uri: videoUrl }}
style={styles.video}
resizeMode="cover"
paused={!isInView || !isFocused || (isAd && adPlayedIds.includes(id))}
repeat={!isAd}
onLoadStart={handleLoadStart}
onLoad={handleLoad}
onProgress={handleProgress}
onEnd={handleEnd}
/>
{loading && (
<View style={styles.loadingContainer}>
<ActivityIndicator size="large" color="#FFF" />
</View>
)}
</View>
);
};
const renderItem = ({ item, index }) => {
// console.log("Item:", item);
const isInView = viewableItems.includes(item.id);
const isAd = item.isAd;
if (item.isAd) {
return (
<View style={[styles.postContainer, { width, height }]} key={item.id}>
<PostHeader />
<PostVideo
videoUrl={item.videoUrl}
id={item.id}
isInView={isInView}
isAd={true}
flatListRef={flatListRef}
handleAdEnd={handleAdEnd} // Add this line
/>
<AdOverlay />
</View>
);
} else {
return (
<View style={[styles.postContainer, { width, height }]} key={item.id}>
{item.imageUrl && <PostImage imageUrl={item.imageUrl} />}
{item.videoUrl && (
<PostVideo
videoUrl={item.videoUrl}
id={item.id}
isInView={isInView}
isAd={false}
flatListRef={flatListRef}
enableScrolling={enableScrolling}
/>
)}
<PostFooter
description={item.description}
contentWidth={width}
createdAt={item.createdAt}
title={item.name}
/>
<ActionBar
avatarUrl={item.user.profileImageUrl}
onCommentPress={() => handleCommentPress(item.id)}
postId={item.id}
userId={currentUser.uid}
navigation={navigation}
authorId={item.uid}
/>
<BlurryContainer
item={item}
onPress={() => console.log("BlurryContainer Pressed")}
/>
</View>
);
}
};
const onViewableItemsChanged = useCallback(({ viewableItems, changed }) => {
const ids = viewableItems.map((item) => item.item.id);
setViewableItems(ids);
if (changed && changed.length > 0) {
changed.forEach((change) => {
if (change.isViewable) {
triggerHapticFeedback();
if (change.item.isAd) {
setIsAdPlaying(true);
}
}
});
}
// console.log("Viewable items:", viewableItems); // Keep this line
}, []);
const viewabilityConfig = {
itemVisiblePercentThreshold: 50,
};
return (
<View style={styles.container}>
<View style={styles.header}>
<TouchableOpacity
style={[
styles.headerButton,
isFollowingFeed ? styles.headerButtonActive : {},
]}
onPress={handleFeedSwitch}
>
<Text style={styles.headerButtonText}>Curated</Text>
</TouchableOpacity>
<TouchableOpacity
style={[
styles.headerButton,
!isFollowingFeed ? styles.headerButtonActive : {},
]}
onPress={handleFeedSwitch}
>
<Text style={styles.headerButtonText}>Discover</Text>
</TouchableOpacity>
</View>
<FlatList
data={isFollowingFeed ? feedVideos : dataWithAds}
renderItem={renderItem}
keyExtractor={(item) => item.id}
showsVerticalScrollIndicator={false}
snapToAlignment="start"
decelerationRate={"fast"}
removeClippedSubviews={true}
snapToInterval={Dimensions.get("window").height}
onViewableItemsChanged={onViewableItemsChanged}
viewabilityConfig={viewabilityConfig}
initialNumToRender={10}
scrollEnabled={!isAdPlaying}
maxToRenderPerBatch={10}
// keyExtractor={(item) => item.id}
/>
<Modal
animationType="slide"
transparent={true}
visible={selectedPost !== null}
onRequestClose={() => setSelectedPost(null)}
>
<TouchableWithoutFeedback onPress={() => setSelectedPost(null)}>
<View style={styles.modalOverlay} />
</TouchableWithoutFeedback>
<Comments postId={selectedPost} />
</Modal>
</View>
);
};
const styles = StyleSheet.create({
container: {
flex: 1,
backgroundColor: "black",
},
postContainer: {
marginBottom: 0,
overflow: "hidden",
},
video: {
width: "100%",
height: "100%",
opacity: 0.8,
},
videoContainer: {
flex: 1,
backgroundColor: "black",
justifyContent: "center",
alignItems: "center",
},
loadingContainer: {
...StyleSheet.absoluteFillObject,
justifyContent: "center",
alignItems: "center",
backgroundColor: "rgba(0, 0, 0, 0.8)",
},
modalOverlay: {
flex: 1,
backgroundColor: "rgba(0, 0, 0, 0.5)",
},
header: {
marginTop: 50,
zIndex: 999999,
position: "absolute",
flexDirection: "row",
justifyContent: "center",
alignItems: "center",
width: "100%",
paddingVertical: 10,
},
headerButton: {
paddingHorizontal: 20,
paddingVertical: 10,
marginHorizontal: 5,
},
headerButtonActive: {
borderBottomWidth: 2,
borderBottomColor: "#FFF",
},
headerButtonText: {
color: "#FFF",
fontSize: 12,
fontWeight: "bold",
},
});
export default HomeScreen;