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58
src/renderer/hooks/hook-generators/create-use-network-object-hook.util.ts
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,58 @@ | ||
| import { NetworkObject } from '@shared/models/network-object.model'; | ||
| import { useMemo, useState, useCallback } from 'react'; | ||
| import { isString } from '@shared/utils/util'; | ||
| import useEvent from '@renderer/hooks/papi-hooks/use-event.hook'; | ||
| import usePromise from '@renderer/hooks/papi-hooks/use-promise.hook'; | ||
|
|
||
| /** | ||
| * This function takes in a getNetworkObject function and creates a hook with that function in it | ||
| * which will return a network object | ||
| * @param getNetworkObject A function that takes in an id string and returns a network object | ||
| * @returns a function that takes in a networkObjectSource and returns a NetworkObject | ||
| */ | ||
| function createUseNetworkObjectHook( | ||
| getNetworkObject: (id: string) => Promise<NetworkObject<object> | undefined>, | ||
| ): ( | ||
| networkObjectSource: string | NetworkObject<object> | undefined, | ||
| ) => NetworkObject<object> | undefined { | ||
| return function useNetworkObject( | ||
| networkObjectSource: string | NetworkObject<object> | undefined, | ||
| ): NetworkObject<object> | undefined { | ||
| // Check to see if they passed in the results of a useNetworkObject hook or undefined | ||
| const didReceiveNetworkObject = !isString(networkObjectSource); | ||
|
|
||
| // Get the network object for this network object name | ||
| // Note: do nothing if we already a network object, but still run this hook. | ||
| // (We must make sure to run the same number of hooks in all code paths.) | ||
| const [networkObject] = usePromise( | ||
| useMemo(() => { | ||
| return didReceiveNetworkObject | ||
| ? // We already have a network object or undefined, so we don't need to run this promise | ||
| undefined | ||
| : async () => | ||
| // We have the network object's type, so we need to get the provider | ||
| networkObjectSource ? getNetworkObject(networkObjectSource) : undefined; | ||
| }, [didReceiveNetworkObject, networkObjectSource]), | ||
| undefined, | ||
| ); | ||
|
|
||
| // Disable this hook when the network object is disposed | ||
| // Note: do nothing if we already received a network object, but still run this hook. | ||
| // (We must make sure to run the same number of hooks in all code paths.) | ||
| const [isDisposed, setIsDisposed] = useState<boolean>(false); | ||
| useEvent( | ||
| !didReceiveNetworkObject && networkObject && !isDisposed | ||
| ? networkObject.onDidDispose | ||
| : undefined, | ||
| useCallback(() => setIsDisposed(true), []), | ||
| ); | ||
|
|
||
| // If we received a network object or undefined, return it | ||
| if (didReceiveNetworkObject) return networkObjectSource; | ||
|
|
||
| // If we had to get a network object, return it if it is not disposed | ||
| return networkObject && !isDisposed ? networkObject : undefined; | ||
| }; | ||
| } | ||
|
|
||
| export default createUseNetworkObjectHook; |
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