Set user presence (online/away) (#127)

* - User presence away when app goes to background
- User presence online when app comes back to foreground

* test if user is connected before call userpresence

* Update state.js

app/lib/rocketchat.js

@@ -520,6 +520,12 @@ const RocketChat = {
 	emitTyping(room, t = true) {
 		const { login } = reduxStore.getState();
 		return call('stream-notify-room', `${ room }/typing`, login.user.username, t);
+	},
+	setUserPresenceAway() {
+		return call('UserPresence:away');
+	},
+	setUserPresenceOnline() {
+		return call('UserPresence:online');
 	}
 };
 

app/sagas/state.js

@@ -1,8 +1,22 @@
-import { takeLatest } from 'redux-saga/effects';
+import { takeLatest, select } from 'redux-saga/effects';
 import { FOREGROUND, BACKGROUND, INACTIVE } from 'redux-enhancer-react-native-appstate';
 
+import RocketChat from '../lib/rocketchat';
+
 const appHasComeBackToForeground = function* appHasComeBackToForeground() {
-	yield console.log('appHasComeBackToForeground');
+	const auth = yield select(state => state.login.isAuthenticated);
+	if (!auth) {
+		return;
+	}
+	return yield RocketChat.setUserPresenceOnline();
+};
+
+const appHasComeBackToBackground = function* appHasComeBackToBackground() {
+	const auth = yield select(state => state.login.isAuthenticated);
+	if (!auth) {
+		return;
+	}
+	return yield RocketChat.setUserPresenceAway();
 };
 
 const root = function* root() {
@@ -12,11 +26,11 @@ const root = function* root() {
 	);
 	yield takeLatest(
 		BACKGROUND,
-		appHasComeBackToForeground
+		appHasComeBackToBackground
 	);
 	yield takeLatest(
 		INACTIVE,
-		appHasComeBackToForeground
+		appHasComeBackToBackground
 	);
 };