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App.tsx
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App.tsx
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import axios from "axios";
import AsyncStorage from "@react-native-async-storage/async-storage";
import { StatusBar } from "expo-status-bar";
import React, { useEffect, useState } from "react";
import { StyleSheet, StatusBar as TopBar, ScrollView, View } from "react-native";
import theme from "./app/properties/colors";
import MainScreen from "./app/screens/MainScreen";
export default function App() {
const [data, setData] = useState<any[] | null>(null);
const [error, setError] = useState<string | null>(null);
useEffect(() => {
fetchApi();
}, []);
function fetchApi() {
const storageKey = "spacelaunch_data";
AsyncStorage.getItem(storageKey).then((stored: string | null) => {
const storedOld: any = stored == null ? null : JSON.parse(stored);
const today = new Date().toDateString();
if (storedOld == null || storedOld.data == null || storedOld.date != today) {
axios.get("https://ll.thespacedevs.com/2.2.0/launch/upcoming/?mode=normal")
.then((response: any) => {
setData(response.data.results);
AsyncStorage.setItem(storageKey, JSON.stringify({date: today, data: response.data.results}))
.catch(() => {
setError("An error occurred storing data.");
});
}).catch((reason: any) => {
if(reason.response.status == 429) {
setError(`Reloaded too often. Please try again in ${parseTime(reason.response.request.responseHeaders["retry-after"])}.`);
} else {
setError("An error occurred requesting the API.");
}
if (storedOld != null && storedOld.data != null) {
setData(storedOld.data);
}
});
} else {
setData(storedOld.data);
}
});
}
return (
<View style={styles.body}>
<ScrollView style={styles.container}>
<StatusBar style="light" />
<MainScreen data={data} error={error} />
</ScrollView>
</View>
);
}
export function parseTime(seconds: number) {
let integer = seconds;
const FACTOR = 60;
const POTENTIALS = ["seconds", "minutes", "hours"];
for (let p = 0; p < POTENTIALS.length; p++) {
if(integer < FACTOR) {
return `${Math.round(integer)} ${POTENTIALS[p]}`;
} else {
integer /= FACTOR;
}
}
return null;
}
const styles = StyleSheet.create({
body: {
flex: 1,
backgroundColor: theme.background.darker
},
container: {
marginTop: TopBar.currentHeight,
flex: 1,
backgroundColor: theme.background.light,
color: theme.font.light
}
});