From 644fcbe06df48e978720e394c504a579e0f23331 Mon Sep 17 00:00:00 2001
From: Jerko Steiner <jerko.steiner@gmail.com>
Date: Mon, 11 Nov 2019 22:14:37 -0300
Subject: [PATCH] Add ability to send file via base64-encoded msg

---
 src/client/actions/PeerActions.js | 61 ++++++++++++++++++++++++++++---
 src/client/components/App.js      |  3 ++
 src/client/components/Chat.js     |  7 +++-
 src/client/components/Toolbar.js  | 31 ++++++++++++++++
 src/client/containers/App.js      |  3 +-
 5 files changed, 98 insertions(+), 7 deletions(-)

diff --git a/src/client/actions/PeerActions.js b/src/client/actions/PeerActions.js
index 7e44a39..c05a10d 100644
--- a/src/client/actions/PeerActions.js
+++ b/src/client/actions/PeerActions.js
@@ -1,3 +1,4 @@
+import * as ChatActions from '../actions/ChatActions.js'
 import * as NotifyActions from '../actions/NotifyActions.js'
 import * as StreamActions from '../actions/StreamActions.js'
 import * as constants from '../constants.js'
@@ -46,10 +47,25 @@ class PeerHandler {
   }
   handleData = object => {
     const { dispatch, user } = this
-    object = JSON.parse(new window.TextDecoder('utf-8').decode(object))
+    const message = JSON.parse(new window.TextDecoder('utf-8').decode(object))
     debug('peer: %s, message: %o', user.id, object)
-    const message = user.id + ': ' + object.message
-    dispatch(NotifyActions.info(message))
+    switch (object.type) {
+      case 'file':
+        dispatch(ChatActions.addMessage({
+          userId: user.id,
+          message: 'Sent a file: "' + message.payload.name,
+          timestamp: new Date().toLocaleString(),
+          image: message.payload.data
+        }))
+        break
+      default:
+        dispatch(ChatActions.addMessage({
+          userId: user.id,
+          message: message.payload,
+          timestamp: new Date().toLocaleString(),
+          image: null
+        }))
+    }
   }
   handleClose = () => {
     const { dispatch, user } = this
@@ -126,7 +142,42 @@ export const destroyPeers = () => ({
 })
 
 export const sendMessage = message => (dispatch, getState) => {
-  message = JSON.stringify({ message })
   const { peers } = getState()
-  _.each(peers, peer => peer.send(message))
+  dispatch(NotifyActions.info('Sending message type: {0} to {1} peers.',
+    message.type, Object.keys(peers).length))
+  _.each(peers, peer => {
+    switch (message.type) {
+      case 'file':
+        dispatch(ChatActions.addMessage({
+          userId: 'You',
+          message: 'Send file: "' +
+            message.payload.name + '" to peer: ' + peer._id,
+          timestamp: new Date().toLocaleString(),
+          image: message.payload.data
+        }))
+    }
+    peer.send(JSON.stringify(message))
+  })
+}
+
+export const sendFile = file => async (dispatch, getState) => {
+  const { name, size, type } = file
+  if (!window.FileReader) {
+    dispatch(NotifyActions.error('File API is not supported by your browser'))
+    return
+  }
+  const reader = new window.FileReader()
+  const base64File = await new Promise(resolve => {
+    reader.addEventListener('load', () => {
+      resolve({
+        name,
+        size,
+        type,
+        data: reader.result
+      })
+    })
+    reader.readAsDataURL(file)
+  })
+
+  sendMessage({ payload: base64File, type: 'file' })(dispatch, getState)
 }
diff --git a/src/client/components/App.js b/src/client/components/App.js
index 955f003..5cdd1d7 100644
--- a/src/client/components/App.js
+++ b/src/client/components/App.js
@@ -20,6 +20,7 @@ export default class App extends React.PureComponent {
     peers: PropTypes.object.isRequired,
     sendMessage: PropTypes.func.isRequired,
     streams: PropTypes.objectOf(StreamPropType).isRequired,
+    onSendFile: PropTypes.func.isRequired,
     toggleActive: PropTypes.func.isRequired
   }
   constructor () {
@@ -56,6 +57,7 @@ export default class App extends React.PureComponent {
       notifications,
       notify,
       messages,
+      onSendFile,
       peers,
       sendMessage,
       toggleActive,
@@ -70,6 +72,7 @@ export default class App extends React.PureComponent {
           chatVisible={this.state.chatVisible}
           messages={messages}
           onToggleChat={this.handleToggleChat}
+          onSendFile={onSendFile}
           stream={streams[constants.ME]}
         />
         <Alerts alerts={alerts} dismiss={dismissAlert} />
diff --git a/src/client/components/Chat.js b/src/client/components/Chat.js
index cc4e428..74d6966 100644
--- a/src/client/components/Chat.js
+++ b/src/client/components/Chat.js
@@ -82,7 +82,12 @@ export default class Chat extends React.PureComponent {
                       </span>
                       <span className="icon icon-schedule" />
                       <time className="message-time">{message.timestamp}</time>
-                      <p className="message-text">{message.message}</p>
+                      <p className="message-text">
+                        {message.image && (
+                          <img src={message.image} width="100%" />
+                        )}
+                        {message.message}
+                      </p>
                     </div>
                   </div>
                 )}
diff --git a/src/client/components/Toolbar.js b/src/client/components/Toolbar.js
index 65c52f9..dd060d2 100644
--- a/src/client/components/Toolbar.js
+++ b/src/client/components/Toolbar.js
@@ -5,13 +5,22 @@ import screenfull from 'screenfull'
 import { MessagePropTypes } from './Chat.js'
 import { StreamPropType } from './Video.js'
 
+const hidden = {
+  display: 'none'
+}
+
 export default class Toolbar extends React.PureComponent {
   static propTypes = {
     messages: PropTypes.arrayOf(MessagePropTypes).isRequired,
     stream: StreamPropType,
     onToggleChat: PropTypes.func.isRequired,
+    onSendFile: PropTypes.func.isRequired,
     chatVisible: PropTypes.bool.isRequired
   }
+  constructor (props) {
+    super(props)
+    this.file = React.createRef()
+  }
   handleMicClick = () => {
     const { stream } = this.props
     stream.mediaStream.getAudioTracks().forEach(track => {
@@ -35,6 +44,14 @@ export default class Toolbar extends React.PureComponent {
   handleHangoutClick = () => {
     window.location.href = '/'
   }
+  handleSendFile = () => {
+    this.file.current.click()
+  }
+  handleSelectFiles = () => {
+    Array
+    .from(this.file.current.files)
+    .forEach(file => this.props.onSendFile(file))
+  }
   render () {
     const { messages, stream } = this.props
 
@@ -49,6 +66,20 @@ export default class Toolbar extends React.PureComponent {
         >
           <span className="icon icon-question_answer" />
         </div>
+        <div
+          className="button send-file"
+          onClick={this.handleSendFile}
+          title="Send file"
+        >
+          <input
+            style={hidden}
+            type="file"
+            multiple
+            ref={this.file}
+            onChange={this.handleSelectFiles}
+          />
+          <span className="icon icon-file-text2" />
+        </div>
 
         {stream && (
           <div>
diff --git a/src/client/containers/App.js b/src/client/containers/App.js
index 72c4b77..552be30 100644
--- a/src/client/containers/App.js
+++ b/src/client/containers/App.js
@@ -23,7 +23,8 @@ function mapDispatchToProps (dispatch) {
     sendMessage: bindActionCreators(PeerActions.sendMessage, dispatch),
     dismissAlert: bindActionCreators(NotifyActions.dismissAlert, dispatch),
     init: bindActionCreators(CallActions.init, dispatch),
-    notify: bindActionCreators(NotifyActions.info, dispatch)
+    notify: bindActionCreators(NotifyActions.info, dispatch),
+    onSendFile: bindActionCreators(PeerActions.sendFile, dispatch)
   }
 }