feat: [closes #33] Render inline media (#73)

* refactor: pass inline media upload data to useRoom
* feat: render inline media
* fix: don't rescind inline media file offers
* refactor: send file offer metadata object
* fix: enable re-seeding of inline media files
* feat: show loading indicator for inline media
* feat: rescind any evicted inline media
* feat: display media rendering failure message
* feat: prevent user from uploading file if message is sending

src/components/ChatTranscript/ChatTranscript.tsx

@@ -2,11 +2,11 @@ import { HTMLAttributes, useRef, useEffect, useState } from 'react'
 import cx from 'classnames'
 import Box from '@mui/material/Box'
 
-import { Message as IMessage } from 'models/chat'
+import { Message as IMessage, InlineMedia } from 'models/chat'
 import { Message } from 'components/Message'
 
 export interface ChatTranscriptProps extends HTMLAttributes<HTMLDivElement> {
-  messageLog: Array<IMessage>
+  messageLog: Array<IMessage | InlineMedia>
   userId: string
 }
 

src/components/Message/InlineMedia.tsx

@@ -0,0 +1,67 @@
+import { useEffect, useRef, useState } from 'react'
+import CircularProgress from '@mui/material/CircularProgress'
+
+import { fileTransfer } from 'services/FileTransfer'
+import { Typography } from '@mui/material'
+
+type TorrentFiles = Awaited<ReturnType<typeof fileTransfer.download>>
+
+interface InlineMediaProps {
+  magnetURI: string
+}
+
+interface InlineFileProps {
+  file: TorrentFiles[0]
+}
+
+export const InlineFile = ({ file }: InlineFileProps) => {
+  const containerRef = useRef(null)
+  const [didRenderingMediaFail, setDidRenderingMediaFail] = useState(false)
+
+  useEffect(() => {
+    const { current: container } = containerRef
+
+    if (!container) return
+
+    try {
+      file.appendTo(container)
+    } catch (e) {
+      setDidRenderingMediaFail(true)
+    }
+  }, [file, containerRef])
+
+  return (
+    <div ref={containerRef}>
+      {didRenderingMediaFail && (
+        <Typography sx={{ fontStyle: 'italic' }}>
+          Media failed to render
+        </Typography>
+      )}
+    </div>
+  )
+}
+
+export const InlineMedia = ({ magnetURI }: InlineMediaProps) => {
+  const [hasDownloadInitiated, setHasDownloadInitiated] = useState(false)
+  const [downloadedFiles, setDownloadedFiles] = useState<TorrentFiles>([])
+
+  useEffect(() => {
+    ;(async () => {
+      if (hasDownloadInitiated) return
+
+      setHasDownloadInitiated(true)
+      const files = await fileTransfer.download(magnetURI)
+      setDownloadedFiles(files)
+    })()
+  }, [hasDownloadInitiated, magnetURI])
+
+  return (
+    <>
+      {hasDownloadInitiated && downloadedFiles.length === 0 ? (
+        <CircularProgress variant="indeterminate" color="inherit" />
+      ) : (
+        downloadedFiles.map(file => <InlineFile file={file} key={file.name} />)
+      )}
+    </>
+  )
+}

src/components/Message/Message.tsx

@@ -20,13 +20,19 @@ import { CodeProps } from 'react-markdown/lib/ast-to-react'
 // @ts-ignore
 import remarkGfm from 'remark-gfm'
 
-import { Message as IMessage, isMessageReceived } from 'models/chat'
+import {
+  InlineMedia as I_InlineMedia,
+  Message as IMessage,
+  isMessageReceived,
+  isInlineMedia,
+} from 'models/chat'
 import { PeerNameDisplay } from 'components/PeerNameDisplay'
 
+import { InlineMedia } from './InlineMedia'
 import './Message.sass'
 
 export interface MessageProps {
-  message: IMessage
+  message: IMessage | I_InlineMedia
   showAuthor: boolean
   userId: string
 }
@@ -123,13 +129,17 @@ export const Message = ({ message, showAuthor, userId }: MessageProps) => {
           }}
           maxWidth="85%"
         >
-          <Markdown
-            components={componentMap}
-            remarkPlugins={[remarkGfm]}
-            linkTarget="_blank"
-          >
-            {message.text}
-          </Markdown>
+          {isInlineMedia(message) ? (
+            <InlineMedia magnetURI={message.magnetURI} />
+          ) : (
+            <Markdown
+              components={componentMap}
+              remarkPlugins={[remarkGfm]}
+              linkTarget="_blank"
+            >
+              {message.text}
+            </Markdown>
+          )}
         </Box>
       </Tooltip>
     </Box>

src/components/Room/Room.tsx

@@ -37,6 +37,7 @@ export function Room({
 }: RoomProps) {
   const {
     isMessageSending,
+    handleInlineMediaUpload,
     messageLog,
     peerRoom,
     roomContextValue,
@@ -107,7 +108,10 @@ export function Room({
                 <RoomAudioControls peerRoom={peerRoom} />
                 <RoomVideoControls peerRoom={peerRoom} />
                 <RoomScreenShareControls peerRoom={peerRoom} />
-                <RoomFileUploadControls peerRoom={peerRoom} />
+                <RoomFileUploadControls
+                  peerRoom={peerRoom}
+                  onInlineMediaUpload={handleInlineMediaUpload}
+                />
               </Box>
             </AccordionDetails>
           </Accordion>

src/components/Room/RoomFileUploadControls.tsx

@@ -1,31 +1,38 @@
-import { ChangeEventHandler, useRef } from 'react'
+import { ChangeEventHandler, useContext, useRef } from 'react'
 import Box from '@mui/material/Box'
 import UploadFile from '@mui/icons-material/UploadFile'
 import Cancel from '@mui/icons-material/Cancel'
 import Fab from '@mui/material/Fab'
 import Tooltip from '@mui/material/Tooltip'
 
+import { RoomContext } from 'contexts/RoomContext'
 import { PeerRoom } from 'services/PeerRoom/PeerRoom'
 
 import { useRoomFileShare } from './useRoomFileShare'
 
 export interface RoomFileUploadControlsProps {
+  onInlineMediaUpload: (files: File[]) => void
   peerRoom: PeerRoom
 }
 
 export function RoomFileUploadControls({
   peerRoom,
+  onInlineMediaUpload,
 }: RoomFileUploadControlsProps) {
+  const roomContext = useContext(RoomContext)
   const fileInputRef = useRef<HTMLInputElement>(null)
 
+  const { isMessageSending } = roomContext
+
   const {
-    isFileShareButtonEnabled,
+    isFileSharingEnabled,
     isSharingFile,
     handleFileShareStart,
     handleFileShareStop,
     sharedFiles,
   } = useRoomFileShare({
     peerRoom,
+    onInlineMediaUpload,
   })
 
   const handleToggleScreenShareButtonClick = () => {
@@ -51,6 +58,8 @@ export function RoomFileUploadControls({
   const shareFileLabel =
     (sharedFiles && sharedFiles.length === 1 && sharedFiles[0].name) || 'files'
 
+  const disableFileUpload = !isFileSharingEnabled || isMessageSending
+
   return (
     <Box
       sx={{
@@ -80,7 +89,7 @@ export function RoomFileUploadControls({
           color={isSharingFile ? 'error' : 'success'}
           aria-label="share screen"
           onClick={handleToggleScreenShareButtonClick}
-          disabled={!isFileShareButtonEnabled}
+          disabled={disableFileUpload}
         >
           {isSharingFile ? <Cancel /> : <UploadFile />}
         </Fab>

src/components/Room/useRoom.ts

@@ -11,14 +11,20 @@ import {
   Message,
   ReceivedMessage,
   UnsentMessage,
+  InlineMedia,
+  ReceivedInlineMedia,
+  UnsentInlineMedia,
   VideoState,
   ScreenShareState,
   isMessageReceived,
+  isInlineMedia,
+  FileOfferMetadata,
 } from 'models/chat'
 import { getPeerName } from 'components/PeerNameDisplay'
 import { NotificationService } from 'services/Notification'
 import { Audio as AudioService } from 'services/Audio'
 import { PeerRoom, PeerHookType } from 'services/PeerRoom'
+import { fileTransfer } from 'services/FileTransfer'
 
 import { messageTranscriptSizeLimit } from 'config/messaging'
 
@@ -52,14 +58,30 @@ export function useRoom(
   } = useContext(ShellContext)
   const settingsContext = useContext(SettingsContext)
   const [isMessageSending, setIsMessageSending] = useState(false)
-  const [messageLog, _setMessageLog] = useState<
-    Array<ReceivedMessage | UnsentMessage>
-  >([])
+  const [messageLog, _setMessageLog] = useState<Array<Message | InlineMedia>>(
+    []
+  )
   const [newMessageAudio] = useState(
     () => new AudioService(process.env.PUBLIC_URL + '/sounds/new-message.aac')
   )
 
-  const setMessageLog = (messages: Message[]) => {
+  const setMessageLog = (messages: Array<Message | InlineMedia>) => {
+    if (messages.length > messageTranscriptSizeLimit) {
+      const evictedMessages = messages.slice(
+        0,
+        messages.length - messageTranscriptSizeLimit
+      )
+
+      for (const message of evictedMessages) {
+        if (
+          isInlineMedia(message) &&
+          fileTransfer.isOffering(message.magnetURI)
+        ) {
+          fileTransfer.rescind(message.magnetURI)
+        }
+      }
+    }
+
     _setMessageLog(messages.slice(-messageTranscriptSizeLimit))
   }
 
@@ -77,12 +99,13 @@ export function useRoom(
     Record<string, MediaStream>
   >({})
 
-  const [peerOfferedFileIds, setPeerOfferedFileIds] = useState<
-    Record<string, string>
+  const [peerOfferedFileMetadata, setPeerOfferedFileMetadata] = useState<
+    Record<string, FileOfferMetadata>
   >({})
 
   const roomContextValue = useMemo(
     () => ({
+      isMessageSending,
       selfVideoStream,
       setSelfVideoStream,
       peerVideoStreams,
@@ -91,10 +114,11 @@ export function useRoom(
       setSelfScreenStream,
       peerScreenStreams,
       setPeerScreenStreams,
-      peerOfferedFileIds,
-      setPeerOfferedFileIds,
+      peerOfferedFileMetadata,
+      setPeerOfferedFileMetadata,
     }),
     [
+      isMessageSending,
       selfVideoStream,
       setSelfVideoStream,
       peerVideoStreams,
@@ -103,8 +127,8 @@ export function useRoom(
       setSelfScreenStream,
       peerScreenStreams,
       setPeerScreenStreams,
-      peerOfferedFileIds,
-      setPeerOfferedFileIds,
+      peerOfferedFileMetadata,
+      setPeerOfferedFileMetadata,
     ]
   )
 
@@ -129,12 +153,15 @@ export function useRoom(
   )
 
   const [sendMessageTranscript, receiveMessageTranscript] = usePeerRoomAction<
-    ReceivedMessage[]
+    Array<ReceivedMessage | ReceivedInlineMedia>
   >(peerRoom, PeerActions.MESSAGE_TRANSCRIPT)
 
   const [sendPeerMessage, receivePeerMessage] =
     usePeerRoomAction<UnsentMessage>(peerRoom, PeerActions.MESSAGE)
 
+  const [sendPeerInlineMedia, receivePeerInlineMedia] =
+    usePeerRoomAction<UnsentInlineMedia>(peerRoom, PeerActions.MEDIA_MESSAGE)
+
   const sendMessage = async (message: string) => {
     if (isMessageSending) return
 
@@ -254,7 +281,48 @@ export function useRoom(
       Object.values({ ...peerVideoStreams, ...peerScreenStreams }).length > 0
   )
 
+  const handleInlineMediaUpload = async (files: File[]) => {
+    const fileOfferId = await fileTransfer.offer(files)
+
+    const unsentInlineMedia: UnsentInlineMedia = {
+      authorId: userId,
+      magnetURI: fileOfferId,
+      timeSent: Date.now(),
+      id: getUuid(),
+    }
+
+    setIsMessageSending(true)
+    setMessageLog([...messageLog, unsentInlineMedia])
+
+    await sendPeerInlineMedia(unsentInlineMedia)
+
+    setMessageLog([
+      ...messageLog,
+      { ...unsentInlineMedia, timeReceived: Date.now() },
+    ])
+    setIsMessageSending(false)
+  }
+
+  receivePeerInlineMedia(inlineMedia => {
+    const userSettings = settingsContext.getUserSettings()
+
+    if (!tabHasFocus) {
+      if (userSettings.playSoundOnNewMessage) {
+        newMessageAudio.play()
+      }
+
+      if (userSettings.showNotificationOnNewMessage) {
+        NotificationService.showNotification(
+          `${getPeerName(inlineMedia.authorId)} shared media`
+        )
+      }
+    }
+
+    setMessageLog([...messageLog, { ...inlineMedia, timeReceived: Date.now() }])
+  })
+
   return {
+    handleInlineMediaUpload,
     isMessageSending,
     messageLog,
     peerRoom,

src/components/Room/useRoomFileShare.ts

@@ -4,7 +4,7 @@ import { sleep } from 'utils'
 import { RoomContext } from 'contexts/RoomContext'
 import { ShellContext } from 'contexts/ShellContext'
 import { PeerActions } from 'models/network'
-import { Peer } from 'models/chat'
+import { FileOfferMetadata, Peer } from 'models/chat'
 import { PeerRoom, PeerHookType } from 'services/PeerRoom'
 
 import { fileTransfer } from 'services/FileTransfer/index'
@@ -12,44 +12,61 @@ import { fileTransfer } from 'services/FileTransfer/index'
 import { usePeerRoomAction } from './usePeerRoomAction'
 
 interface UseRoomFileShareConfig {
+  onInlineMediaUpload: (files: File[]) => void
   peerRoom: PeerRoom
 }
 
-export function useRoomFileShare({ peerRoom }: UseRoomFileShareConfig) {
+const isInlineMediaFile = (file: File) => {
+  return ['image', 'audio', 'video'].includes(file.type.split('/')[0])
+}
+
+export function useRoomFileShare({
+  onInlineMediaUpload,
+  peerRoom,
+}: UseRoomFileShareConfig) {
   const shellContext = useContext(ShellContext)
   const roomContext = useContext(RoomContext)
   const [sharedFiles, setSharedFiles] = useState<FileList | null>(null)
-  const [selfFileOfferId, setFileOfferId] = useState<string | null>(null)
-  const [isFileShareButtonEnabled, setIsFileShareButtonEnabled] = useState(true)
+  const [selfFileOfferMagnetUri, setFileOfferMagnetUri] = useState<
+    string | null
+  >(null)
+  const [isFileSharingEnabled, setIsFileSharingEnabled] = useState(true)
 
   const { peerList, setPeerList } = shellContext
-  const { peerOfferedFileIds, setPeerOfferedFileIds } = roomContext
+  const { peerOfferedFileMetadata, setPeerOfferedFileMetadata } = roomContext
 
-  const [sendFileOfferId, receiveFileOfferId] = usePeerRoomAction<
-    string | null
-  >(peerRoom, PeerActions.FILE_OFFER)
+  const [sendFileOfferMetadata, receiveFileOfferMetadata] =
+    usePeerRoomAction<FileOfferMetadata | null>(
+      peerRoom,
+      PeerActions.FILE_OFFER
+    )
 
-  receiveFileOfferId((fileOfferId, peerId) => {
-    if (fileOfferId) {
-      setPeerOfferedFileIds({ [peerId]: fileOfferId })
+  receiveFileOfferMetadata((fileOfferMetadata, peerId) => {
+    if (fileOfferMetadata) {
+      setPeerOfferedFileMetadata({ [peerId]: fileOfferMetadata })
     } else {
-      const fileOfferId = peerOfferedFileIds[peerId]
+      const fileOfferMetadata = peerOfferedFileMetadata[peerId]
+      const { magnetURI, isAllInlineMedia } = fileOfferMetadata
 
-      if (fileOfferId && fileTransfer.isOffering(fileOfferId)) {
-        fileTransfer.rescind(fileOfferId)
+      if (
+        fileOfferMetadata &&
+        fileTransfer.isOffering(magnetURI) &&
+        !isAllInlineMedia
+      ) {
+        fileTransfer.rescind(magnetURI)
       }
 
-      const newFileOfferIds = { ...peerOfferedFileIds }
-      delete newFileOfferIds[peerId]
+      const newFileOfferMetadata = { ...peerOfferedFileMetadata }
+      delete newFileOfferMetadata[peerId]
 
-      setPeerOfferedFileIds(newFileOfferIds)
+      setPeerOfferedFileMetadata(newFileOfferMetadata)
     }
 
     const newPeerList = peerList.map(peer => {
       const newPeer: Peer = { ...peer }
 
       if (peer.peerId === peerId) {
-        newPeer.offeredFileId = fileOfferId
+        newPeer.offeredFileId = fileOfferMetadata?.magnetURI ?? null
       }
 
       return newPeer
@@ -58,68 +75,93 @@ export function useRoomFileShare({ peerRoom }: UseRoomFileShareConfig) {
     setPeerList(newPeerList)
   })
 
+  const isEveryFileInlineMedia = (files: FileList | null) =>
+    Boolean(files && [...files].every(isInlineMediaFile))
+
   peerRoom.onPeerJoin(PeerHookType.FILE_SHARE, async (peerId: string) => {
-    if (!selfFileOfferId) return
+    if (!selfFileOfferMagnetUri) return
 
     // This sleep is needed to prevent this peer from not appearing on other
     // peers' peer lists. This is because Trystero's interaction between
     // onPeerJoin and its actions is not totally compatible with React's
     // lifecycle hooks. In this case, the reference to peerList in
-    // receiveFileOfferId is out of date and prevents this peer from ever being
-    // added to the receiver's peer list. Deferring the sendFileOfferId call to
-    // the next tick serves as a workaround.
+    // receiveFileOfferMetadata is out of date and prevents this peer from ever
+    // being added to the receiver's peer list. Deferring the
+    // sendFileOfferMetadata call to the next tick serves as a workaround.
     await sleep(1)
 
-    sendFileOfferId(selfFileOfferId, peerId)
+    sendFileOfferMetadata(
+      {
+        magnetURI: selfFileOfferMagnetUri,
+        isAllInlineMedia: isEveryFileInlineMedia(sharedFiles),
+      },
+      peerId
+    )
   })
 
   peerRoom.onPeerLeave(PeerHookType.FILE_SHARE, (peerId: string) => {
-    const fileOfferId = peerOfferedFileIds[peerId]
+    const fileOfferMetadata = peerOfferedFileMetadata[peerId]
 
-    if (!fileOfferId) return
+    if (!fileOfferMetadata) return
 
-    if (fileTransfer.isOffering(fileOfferId)) {
-      fileTransfer.rescind(fileOfferId)
+    const { magnetURI, isAllInlineMedia } = fileOfferMetadata
+
+    if (fileTransfer.isOffering(magnetURI) && !isAllInlineMedia) {
+      fileTransfer.rescind(magnetURI)
     }
 
-    const newPeerFileOfferIds = { ...peerOfferedFileIds }
-    delete newPeerFileOfferIds[peerId]
-    setPeerOfferedFileIds(newPeerFileOfferIds)
+    const newPeerFileOfferMetadata = { ...peerOfferedFileMetadata }
+    delete newPeerFileOfferMetadata[peerId]
+    setPeerOfferedFileMetadata(newPeerFileOfferMetadata)
   })
 
   const handleFileShareStart = async (files: FileList) => {
+    const inlineMediaFiles = [...files].filter(isInlineMediaFile)
+
     setSharedFiles(files)
-    setIsFileShareButtonEnabled(false)
+    setIsFileSharingEnabled(false)
 
-    const fileOfferId = await fileTransfer.offer(files)
-    sendFileOfferId(fileOfferId)
-    setFileOfferId(fileOfferId)
+    const magnetURI = await fileTransfer.offer(files)
 
-    setIsFileShareButtonEnabled(true)
+    if (inlineMediaFiles.length > 0) {
+      onInlineMediaUpload(inlineMediaFiles)
+    }
+
+    sendFileOfferMetadata({
+      magnetURI,
+      isAllInlineMedia: isEveryFileInlineMedia(files),
+    })
+
+    setFileOfferMagnetUri(magnetURI)
+    setIsFileSharingEnabled(true)
   }
 
   const handleFileShareStop = () => {
-    sendFileOfferId(null)
-    setFileOfferId(null)
+    sendFileOfferMetadata(null)
+    setFileOfferMagnetUri(null)
 
-    if (selfFileOfferId && fileTransfer.isOffering(selfFileOfferId)) {
-      fileTransfer.rescind(selfFileOfferId)
+    if (
+      selfFileOfferMagnetUri &&
+      fileTransfer.isOffering(selfFileOfferMagnetUri) &&
+      !isEveryFileInlineMedia(sharedFiles)
+    ) {
+      fileTransfer.rescind(selfFileOfferMagnetUri)
     }
   }
 
   useEffect(() => {
     return () => {
       fileTransfer.rescindAll()
-      sendFileOfferId(null)
+      sendFileOfferMetadata(null)
     }
-  }, [sendFileOfferId])
+  }, [sendFileOfferMetadata])
 
-  const isSharingFile = Boolean(selfFileOfferId)
+  const isSharingFile = Boolean(selfFileOfferMagnetUri)
 
   return {
     handleFileShareStart,
     handleFileShareStop,
-    isFileShareButtonEnabled,
+    isFileSharingEnabled,
     isSharingFile,
     sharedFiles,
   }

src/components/Shell/PeerDownloadFileButton.tsx

@@ -38,7 +38,7 @@ export const PeerDownloadFileButton = ({
     setDownloadProgress(null)
 
     try {
-      await fileTransfer.download(offeredFileId, { onProgress })
+      await fileTransfer.download(offeredFileId, { doSave: true, onProgress })
     } catch (e) {
       if (isError(e)) {
         shellContext.showAlert(e.message, {

src/contexts/RoomContext.ts

@@ -1,6 +1,8 @@
 import { createContext, Dispatch, SetStateAction } from 'react'
+import { FileOfferMetadata } from 'models/chat'
 
 interface RoomContextProps {
+  isMessageSending: boolean
   selfVideoStream: MediaStream | null
   setSelfVideoStream: Dispatch<SetStateAction<MediaStream | null>>
   peerVideoStreams: Record<string, MediaStream>
@@ -9,11 +11,14 @@ interface RoomContextProps {
   setSelfScreenStream: Dispatch<SetStateAction<MediaStream | null>>
   peerScreenStreams: Record<string, MediaStream>
   setPeerScreenStreams: Dispatch<SetStateAction<Record<string, MediaStream>>>
-  peerOfferedFileIds: Record<string, string>
-  setPeerOfferedFileIds: Dispatch<SetStateAction<Record<string, string>>>
+  peerOfferedFileMetadata: Record<string, FileOfferMetadata>
+  setPeerOfferedFileMetadata: Dispatch<
+    SetStateAction<Record<string, FileOfferMetadata>>
+  >
 }
 
 export const RoomContext = createContext<RoomContextProps>({
+  isMessageSending: false,
   selfVideoStream: null,
   setSelfVideoStream: () => {},
   peerVideoStreams: {},
@@ -22,6 +27,6 @@ export const RoomContext = createContext<RoomContextProps>({
   setSelfScreenStream: () => {},
   peerScreenStreams: {},
   setPeerScreenStreams: () => {},
-  peerOfferedFileIds: {},
-  setPeerOfferedFileIds: () => {},
+  peerOfferedFileMetadata: {},
+  setPeerOfferedFileMetadata: () => {},
 })

src/models/chat.ts

@@ -5,6 +5,22 @@ export interface UnsentMessage {
   authorId: string
 }
 
+export interface ReceivedMessage extends UnsentMessage {
+  timeReceived: number
+}
+
+export type Message = UnsentMessage | ReceivedMessage
+
+export interface UnsentInlineMedia extends Omit<UnsentMessage, 'text'> {
+  magnetURI: string
+}
+
+export interface ReceivedInlineMedia extends UnsentInlineMedia {
+  timeReceived: number
+}
+
+export type InlineMedia = UnsentInlineMedia | ReceivedInlineMedia
+
 export enum AudioState {
   PLAYING = 'PLAYING',
   STOPPED = 'STOPPED',
@@ -34,12 +50,17 @@ export interface Peer {
   offeredFileId: string | null
 }
 
-export interface ReceivedMessage extends UnsentMessage {
-  timeReceived: number
+export const isMessageReceived = (
+  message: Message | InlineMedia
+): message is ReceivedMessage | ReceivedInlineMedia => 'timeReceived' in message
+
+export const isInlineMedia = (
+  message: Message | InlineMedia
+): message is InlineMedia => {
+  return 'magnetURI' in message
 }
 
-export const isMessageReceived = (
-  message: Message
-): message is ReceivedMessage => 'timeReceived' in message
-
-export type Message = UnsentMessage | ReceivedMessage
+export interface FileOfferMetadata {
+  magnetURI: string
+  isAllInlineMedia: boolean
+}

src/models/network.ts

@@ -1,6 +1,7 @@
 // NOTE: Action names are limited to 12 characters, otherwise Trystero breaks.
 export enum PeerActions {
   MESSAGE = 'MESSAGE',
+  MEDIA_MESSAGE = 'MEDIA_MSG',
   MESSAGE_TRANSCRIPT = 'MSG_XSCRIPT',
   PEER_NAME = 'PEER_NAME',
   AUDIO_CHANGE = 'AUDIO_CHANGE',

src/services/FileTransfer/FileTransfer.ts

@@ -10,6 +10,7 @@ import { streamSaverUrl } from 'config/streamSaverUrl'
 streamSaver.mitm = streamSaverUrl
 
 interface DownloadOpts {
+  doSave?: boolean
   onProgress?: (progress: number) => void
 }
 
@@ -72,7 +73,7 @@ export class FileTransfer {
     window.addEventListener('beforeunload', this.handleBeforePageUnload)
   }
 
-  async download(magnetURI: string, { onProgress }: DownloadOpts = {}) {
+  async download(magnetURI: string, { onProgress, doSave }: DownloadOpts = {}) {
     let torrent = this.torrents[magnetURI]
 
     if (!torrent) {
@@ -104,17 +105,21 @@ export class FileTransfer {
 
     torrent.on('download', handleDownload)
 
-    try {
-      await this.saveTorrentFiles(torrent)
-    } catch (e) {
-      torrent.off('download', handleDownload)
+    if (doSave) {
+      try {
+        await this.saveTorrentFiles(torrent)
+      } catch (e) {
+        torrent.off('download', handleDownload)
 
-      // Propagate error to the UI
-      throw e
+        // Propagate error to the UI
+        throw e
+      }
     }
+
+    return torrent.files
   }
 
-  async offer(files: FileList) {
+  async offer(files: Parameters<typeof this.webTorrentClient.seed>[0]) {
     const { isPrivate } = await detectIncognito()
 
     const torrent = await new Promise<Torrent>(res => {