import {
View,
RefreshControl,
ActivityIndicator,
Animated,
Easing,
TouchableOpacity,
} from "react-native";
import React, { useState, useRef, useEffect } from "react";
import StreamerCard from "../../../components/StreamerCard";
import Empty from "../../../components/Empty";
import { useTailwind } from "tailwind-rn";
import baseRequest from "../../../utils/baseRequest";
import Toast from "react-native-toast-message";
import { generateSignature } from "../../../utils/crypto";
import { FlashList } from "@shopify/flash-list";
import { Svg, Path } from "react-native-svg";
export default function FeedStream() {
//获取推荐的主播mid
const [recommMids, setRecommMids] = useState([]);
const getRecommMids = async () => {
if (!isEnd) return;
const apiUrl = process.env.EXPO_PUBLIC_API_URL;
try {
const base = await baseRequest();
const signature = await generateSignature({
...base,
});
const response = await fetch(
`${apiUrl}/api/streamer/recomm_list?signature=${signature}`,
{
method: "POST",
headers: {
"Content-Type": "application/json",
},
body: JSON.stringify({
...base,
}),
}
);
const recommData = await response.json();
if (recommData.ret === -1) {
Toast.show({
type: "error",
text1: recommData.msg,
topOffset: 60,
});
return;
}
setIsEnd(false);
setRecommMids(recommData.data.recomm_list);
} catch (error) {
console.error(error);
}
};
//查询的起始索引
const [startIndex, setStartIndex] = useState(0);
// 定义每次取多少个用户ID
const batchSize = 4;
//获取新数据
const [data, setData] = useState([]);
const [isEnd, setIsEnd] = useState(true);
const [isActivityIndicatorShow, setIsActivityIndicatorShow] = useState(true);
const [isFetching, setIsFetching] = useState(false);
const getData = async (type) => {
if (isFetching) return;
if (isEnd) return;
if (recommMids.length === 0) return;
const apiUrl = process.env.EXPO_PUBLIC_API_URL;
const batchStreamerMids = recommMids.slice(
startIndex,
startIndex + batchSize
);
if (batchStreamerMids.length === 0) {
if (type !== "top") {
setIsActivityIndicatorShow(false);
return;
}
setIsActivityIndicatorShow(true);
setIsEnd(true);
setStartIndex(0);
return;
}
setIsFetching((prev) => true);
try {
const base = await baseRequest();
const signature = await generateSignature({
mids: batchStreamerMids,
...base,
});
const detailResponse = await fetch(
`${apiUrl}/api/streamer/list_ext_by_mids?signature=${signature}`,
{
method: "POST",
headers: {
"Content-Type": "application/json",
},
body: JSON.stringify({
mids: batchStreamerMids,
...base,
}),
}
);
const detailData = await detailResponse.json();
if (detailData.ret === -1) {
Toast.show({
type: "error",
text1: detailData.msg,
topOffset: 60,
});
return;
}
const sortedData = detailData.data.list.sort((a, b) => b.fans - a.fans);
if (type === "top") {
setData((prev) => {
if (startIndex === 0) {
return sortedData;
} else return [...sortedData, ...prev];
});
} else {
setData((prev) => [...prev, ...sortedData]);
}
// 更新下一次查询的起始索引
setStartIndex(startIndex + batchSize);
setIsFetching((prev) => false);
} catch (error) {
console.error(error);
}
};
//获取推荐mid
useEffect(() => {
getRecommMids();
}, [isEnd]);
//当推荐的mid改变，获取新数据
useEffect(() => {
getData("top");
}, [recommMids]);
const tailwind = useTailwind();
const renderItem = ({ item }) => ;
const [refreshing, setRefreshing] = useState(false);
//刷新动画
const flatListRef = useRef(null);
const [rotateValue] = useState(new Animated.Value(0));
const startRotation = () => {
Animated.timing(rotateValue, {
toValue: 1,
duration: 500,
easing: Easing.linear,
useNativeDriver: true,
}).start(() => {
rotateValue.setValue(0);
});
};
const spin = rotateValue.interpolate({
inputRange: [0, 1],
outputRange: ["0deg", "360deg"],
});
//下拉刷新
const handleRefresh = async () => {
startRotation();
flatListRef.current.scrollToOffset({ animated: false, offset: 0 });
setRefreshing(true);
await getData("top");
setRefreshing(false);
};
return (
handleRefresh()}
/>
}
onEndReached={() => getData("bottom")}
ListEmptyComponent={}
ListFooterComponent={
{isActivityIndicatorShow && data.length !== 0 && (
)}
}
keyExtractor={(item) => item.mid}
/>
);
}