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* as React from 'react';\nimport { Linking, Platform } from 'react-native';\nimport {\n getActionFromState as getActionFromStateDefault,\n getStateFromPath as getStateFromPathDefault,\n NavigationContainerRef,\n} from '@react-navigation/core';\nimport extractPathFromURL from './extractPathFromURL';\nimport type { LinkingOptions } from './types';\n\ntype ResultState = ReturnType<typeof getStateFromPathDefault>;\n\nlet isUsingLinking = false;\n\nexport default function useLinking(\n ref: React.RefObject<NavigationContainerRef>,\n {\n enabled = true,\n prefixes,\n config,\n getInitialURL = () =>\n Promise.race([\n Linking.getInitialURL(),\n new Promise<undefined>((resolve) =>\n // Timeout in 150ms if `getInitialState` doesn't resolve\n // Workaround for https://github.com/facebook/react-native/issues/25675\n setTimeout(resolve, 150)\n ),\n ]),\n subscribe = (listener) => {\n const callback = ({ url }: { url: string }) => listener(url);\n\n const subscription = Linking.addEventListener('url', callback) as\n | { remove(): void }\n | undefined;\n\n return () => {\n // https://github.com/facebook/react-native/commit/6d1aca806cee86ad76de771ed3a1cc62982ebcd7\n if (subscription?.remove) {\n subscription.remove();\n } else {\n Linking.removeEventListener('url', callback);\n }\n };\n },\n getStateFromPath = getStateFromPathDefault,\n getActionFromState = getActionFromStateDefault,\n }: LinkingOptions\n) {\n React.useEffect(() => {\n if (enabled !== false && isUsingLinking) {\n throw new Error(\n [\n 'Looks like you have configured linking in multiple places. This is likely an error since deep links should only be handled in one place to avoid conflicts. Make sure that:',\n \"- You are not using both 'linking' prop and 'useLinking'\",\n \"- You don't have 'useLinking' in multiple components\",\n Platform.OS === 'android'\n ? \"- You have set 'android:launchMode=singleTask' in the '<activity />' section of the 'AndroidManifest.xml' file to avoid launching multiple instances\"\n : '',\n ]\n .join('\\n')\n .trim()\n );\n } else {\n isUsingLinking = enabled !== false;\n }\n\n return () => {\n isUsingLinking = false;\n };\n });\n\n // We store these options in ref to avoid re-creating getInitialState and re-subscribing listeners\n // This lets user avoid wrapping the items in `React.useCallback` or `React.useMemo`\n // Not re-creating `getInitialState` is important coz it makes it easier for the user to use in an effect\n const enabledRef = React.useRef(enabled);\n const prefixesRef = React.useRef(prefixes);\n const configRef = React.useRef(config);\n const getInitialURLRef = React.useRef(getInitialURL);\n const getStateFromPathRef = React.useRef(getStateFromPath);\n const getActionFromStateRef = React.useRef(getActionFromState);\n\n React.useEffect(() => {\n enabledRef.current = enabled;\n prefixesRef.current = prefixes;\n configRef.current = config;\n getInitialURLRef.current = getInitialURL;\n getStateFromPathRef.current = getStateFromPath;\n getActionFromStateRef.current = getActionFromState;\n });\n\n const getInitialState = React.useCallback(() => {\n let state: ResultState | undefined;\n\n if (enabledRef.current) {\n const url = getInitialURLRef.current();\n\n if (url != null && typeof url !== 'string') {\n return url.then((url) => {\n const path = url\n ? extractPathFromURL(prefixesRef.current, url)\n : null;\n\n return path\n ? getStateFromPathRef.current(path, configRef.current)\n : undefined;\n });\n }\n\n const path = url ? extractPathFromURL(prefixesRef.current, url) : null;\n\n state = path\n ? getStateFromPathRef.current(path, configRef.current)\n : undefined;\n }\n\n const thenable = {\n then(onfulfilled?: (state: ResultState | undefined) => void) {\n return Promise.resolve(onfulfilled ? onfulfilled(state) : state);\n },\n catch() {\n return thenable;\n },\n };\n\n return thenable as PromiseLike<ResultState | undefined>;\n }, []);\n\n React.useEffect(() => {\n const listener = (url: string) => {\n if (!enabled) {\n return;\n }\n\n const path = extractPathFromURL(prefixesRef.current, url);\n const navigation = ref.current;\n\n if (navigation && path) {\n const state = getStateFromPathRef.current(path, configRef.current);\n\n if (state) {\n // Make sure that the routes in the state exist in the root navigator\n // Otherwise there's an error in the linking configuration\n const rootState = navigation.getRootState();\n\n if (\n state.routes.some((r) => !rootState?.routeNames.includes(r.name))\n ) {\n console.warn(\n \"The navigation state parsed from the URL contains routes not present in the root navigator. This usually means that the linking configuration doesn't match the navigation structure. See https://reactnavigation.org/docs/configuring-links for more details on how to specify a linking configuration.\"\n );\n return;\n }\n\n const action = getActionFromStateRef.current(\n state,\n configRef.current\n );\n\n if (action !== undefined) {\n try {\n navigation.dispatch(action);\n } catch (e) {\n // Ignore any errors from deep linking.\n // This could happen in case of malformed links, navigation object not being initialized etc.\n console.warn(\n `An error occurred when trying to handle the link '${path}': ${e.message}`\n );\n }\n } else {\n navigation.resetRoot(state);\n }\n }\n }\n };\n\n return subscribe(listener);\n }, [enabled, ref, subscribe]);\n\n return {\n getInitialState,\n };\n}\n"]} |