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Merge pull request #62 from xmtp/rygine/attachments-update
Refactor processing of attachment content types
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,5 @@ | ||
| --- | ||
| "@xmtp/react-sdk": minor | ||
| --- | ||
|
|
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| Refactor processing of remote attachment content types. This update removes eager loading of remote data in the message processor in favor of the new `useAttachment` hook. With the `useAttachment` hook, developers can now respond to loading and error states when fetching the remote data. |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,69 @@ | ||
| import { useCallback, useEffect, useState } from "react"; | ||
| import { | ||
| ContentTypeAttachment, | ||
| ContentTypeRemoteAttachment, | ||
| RemoteAttachmentCodec, | ||
| } from "@xmtp/content-type-remote-attachment"; | ||
| import type { | ||
| RemoteAttachment, | ||
| Attachment, | ||
| } from "@xmtp/content-type-remote-attachment"; | ||
| import { useDb } from "./useDb"; | ||
| import type { CachedMessage } from "@/helpers/caching/messages"; | ||
| import { useClient } from "@/hooks/useClient"; | ||
|
|
||
| /** | ||
| * This hook returns the attachment data of a cached message | ||
| */ | ||
| export const useAttachment = (message: CachedMessage) => { | ||
| const { client } = useClient(); | ||
| const { db } = useDb(); | ||
| const [isLoading, setIsLoading] = useState(false); | ||
| const [error, setError] = useState<Error | undefined>(undefined); | ||
| const [attachment, setAttachment] = useState<Attachment | undefined>( | ||
| undefined, | ||
| ); | ||
|
|
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| const loadRemoteAttachment = useCallback(async () => { | ||
| if (client) { | ||
| try { | ||
| setIsLoading(true); | ||
| const loadedAttachment = await RemoteAttachmentCodec.load<Attachment>( | ||
| message.content as RemoteAttachment, | ||
| client, | ||
| ); | ||
| setIsLoading(false); | ||
| setAttachment(loadedAttachment); | ||
| } catch (e) { | ||
| setError(new Error("Unable to load remote attachment")); | ||
| } | ||
| } else { | ||
| setError(new Error("XMTP client is required to load remote attachments")); | ||
| } | ||
| }, [client, message.content]); | ||
|
|
||
| useEffect(() => { | ||
| const getAttachment = async () => { | ||
| switch (message.contentType) { | ||
| case ContentTypeAttachment.toString(): { | ||
| setAttachment(message.content as Attachment); | ||
| break; | ||
| } | ||
| case ContentTypeRemoteAttachment.toString(): { | ||
| await loadRemoteAttachment(); | ||
| break; | ||
| } | ||
| default: | ||
| setError(new Error("Message is not an attachment content type")); | ||
| } | ||
| }; | ||
| void getAttachment(); | ||
| }, [db, loadRemoteAttachment, message]); | ||
|
|
||
| return { | ||
| attachment, | ||
| error, | ||
| isLoading, | ||
| retry: loadRemoteAttachment, | ||
| }; | ||
| }; |
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