From 16a28eca258e07d45c7e2a8ee95368d4eb077d4d Mon Sep 17 00:00:00 2001
From: Jason <jason.daurus@gmail.com>
Date: Wed, 15 Jun 2016 01:18:10 +0800
Subject: [web] websocket

---
 web/src/js/ducks/websocket.js | 101 ++++++++++++++++++++++++++++++++++++------
 1 file changed, 87 insertions(+), 14 deletions(-)

(limited to 'web/src/js/ducks/websocket.js')

diff --git a/web/src/js/ducks/websocket.js b/web/src/js/ducks/websocket.js
index ebb39cf8..268c9e65 100644
--- a/web/src/js/ducks/websocket.js
+++ b/web/src/js/ducks/websocket.js
@@ -1,30 +1,103 @@
+import { ConnectionActions } from '../actions.js'
+import { AppDispatcher } from '../dispatcher.js'
+import * as eventLogActions from './eventLog'
+import * as flowActions from './flows'
+
+const CONNECT = 'WEBSOCKET_CONNECT'
 const CONNECTED = 'WEBSOCKET_CONNECTED'
+const DISCONNECT = 'WEBSOCKET_DISCONNECT'
 const DISCONNECTED = 'WEBSOCKET_DISCONNECTED'
+const ERROR = 'WEBSOCKET_ERROR'
+const MESSAGE = 'WEBSOCKET_MESSAGE'
 
+/* we may want to have an error message attribute here at some point */
+const defaultState = { connected: false, socket: null }
 
-const defaultState = {
-    connected: false,
-    /* we may want to have an error message attribute here at some point */
-}
 export default function reducer(state = defaultState, action) {
     switch (action.type) {
+
+        case CONNECT:
+            return { ...state, socket: action.socket }
+
         case CONNECTED:
-            return {
-                connected: true
-            }
+            return { ...state, connected: true }
+
+        case DISCONNECT:
+            return { ...state, connected: false }
+
         case DISCONNECTED:
-            return {
-                connected: false
-            }
+            return { ...state, socket: null }
+
         default:
             return state
     }
 }
 
+export function connect() {
+    return dispatch => {
+        const socket = new WebSocket(location.origin.replace('http', 'ws') + '/updates')
+
+        // @todo remove this
+        window.ws = socket
+
+        socket.addEventListener('open', () => dispatch(onConnect()))
+        socket.addEventListener('close', () => dispatch(onDisconnect()))
+        socket.addEventListener('message', msg => dispatch(onMessage(msg)))
+        socket.addEventListener('error', error => dispatch(onError(error)))
+
+        dispatch({ type: CONNECT, socket })
+
+        return socket
+    }
+}
+
+export function disconnect() {
+    return { type: DISCONNECT }
+}
+
+export function onConnect() {
+    // workaround to make sure that our state is already available.
+    return dispatch => {
+        dispatch({ type: CONNECTED })
+        dispatch(flowActions.fetchFlows()).then(() => ConnectionActions.open())
+    }
+}
+
+export function onDisconnect() {
+    return dispatch => {
+        ConnectionActions.close()
+        dispatch(eventLogActions.addLogEntry('WebSocket connection closed.'))
+        dispatch({ type: DISCONNECTED })
+    }
+}
+
+export function onMessage(msg) {
+    return dispatch => {
+        const data = JSON.parse(msg.data)
+
+        AppDispatcher.dispatchServerAction(data)
 
-export function connected() {
-    return {type: CONNECTED}
+        switch (data.type) {
+
+            case eventLogActions.UPDATE_LOG:
+                return dispatch(eventLogActions.updateLogEntries(data))
+
+            case flowActions.UPDATE_FLOWS:
+                return dispatch(flowActions.updateFlows(data))
+
+            default:
+                console.warn('unknown message', data)
+        }
+
+        dispatch({ type: MESSAGE, msg })
+    }
 }
-export function disconnected() {
-    return {type: DISCONNECTED}
+
+export function onError(error) {
+    // @todo let event log subscribe WebSocketActions.ERROR
+    return dispatch => {
+        ConnectionActions.error()
+        dispatch(eventLogActions.addLogEntry('WebSocket connection error.'))
+        dispatch({ type: ERROR, error })
+    }
 }
-- 
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