Files
jrshikoku/GeneralWebView.tsx

118 lines
3.8 KiB
TypeScript

import React from "react";
import { Alert, BackHandler, View } from "react-native";
import { WebView } from "react-native-webview";
import { BigButton } from "./components/atom/BigButton";
import { useFocusEffect, useNavigation } from "@react-navigation/native";
import { useThemeColors } from "@/lib/theme";
import { AS } from "./storageControl";
import { STORAGE_KEYS } from "@/constants";
import {
DEFAULT_JR_DATA_SYSTEM_ENV,
normalizeJrDataSystemEnvironment,
rewriteJrDataSystemUrl,
} from "@/lib/jrDataSystemEnvironment";
export default ({ route }) => {
if (!route.params) {
return null;
}
const { uri, useExitButton = true } = route.params;
const { goBack } = useNavigation();
const { fixed } = useThemeColors();
const webViewRef = React.useRef<WebView>(null);
const [canGoBack, setCanGoBack] = React.useState(false);
const [selectedEnvironment, setSelectedEnvironment] = React.useState(
DEFAULT_JR_DATA_SYSTEM_ENV,
);
const [resolvedUri, setResolvedUri] = React.useState("");
const [isEnvironmentReady, setIsEnvironmentReady] = React.useState(false);
const hasAlerted = React.useRef(false);
React.useEffect(() => {
let isMounted = true;
const applyEnvironment = (value: unknown) => {
if (!isMounted) return;
const nextEnvironment = normalizeJrDataSystemEnvironment(value);
setSelectedEnvironment(nextEnvironment);
setResolvedUri(
rewriteJrDataSystemUrl(
typeof uri === "string" ? uri : "",
nextEnvironment,
),
);
setIsEnvironmentReady(true);
};
AS.getItem(STORAGE_KEYS.JR_DATA_SYSTEM_ENV)
.then(applyEnvironment)
.catch(() => applyEnvironment(DEFAULT_JR_DATA_SYSTEM_ENV));
return () => {
isMounted = false;
};
}, [uri]);
useFocusEffect(
React.useCallback(() => {
const onHardwareBack = () => {
if (canGoBack) {
webViewRef.current?.goBack();
return true;
}
goBack();
return true;
};
const subscription = BackHandler.addEventListener("hardwareBackPress", onHardwareBack);
return () => subscription.remove();
}, [canGoBack, goBack])
);
return (
<View style={{ height: "100%", backgroundColor: fixed.primary }}>
{isEnvironmentReady && (
<WebView
source={{ uri: resolvedUri }}
contentMode="mobile"
allowsBackForwardNavigationGestures
ref={webViewRef}
onShouldStartLoadWithRequest={(request) => {
if (request.isTopFrame === false) {
return true;
}
const rewrittenUrl = rewriteJrDataSystemUrl(
request.url,
selectedEnvironment,
);
if (rewrittenUrl !== request.url) {
setResolvedUri(rewrittenUrl);
return false;
}
return true;
}}
onNavigationStateChange={(navState) => {
setCanGoBack(navState.canGoBack);
if (navState.url === "https://unyohub.2pd.jp/integration/succeeded.php") {
webViewRef.current?.goBack();
if (!hasAlerted.current) {
hasAlerted.current = true;
Alert.alert("鉄道運用HUBへの投稿完了", "運用HUBからのこのアプリへのデータ反映には暫く時間がかかりますので、しばらくお待ちください。", [
{ text: "完了" },
]);
}
}
}}
onMessage={(event) => {
const { data } = event.nativeEvent;
const { type } = JSON.parse(data);
if (type === "back") return webViewRef.current?.goBack();
if (type === "windowClose") return goBack();
}}
/>
)}
{useExitButton && <BigButton onPress={goBack} string="閉じる" />}
</View>
);
};