Merge pull request #1

* Add node-notifier to show notifications whenever new message arrive

* Add load: groupname/username command, refactor code to match ES6 standard and edit README.md to reflect latest changes

* Fix typo in notifications

(From ameerthehacker)

README.md

@@ -1,6 +1,6 @@
 # Messenger-CLI
 
-Messenger-CLI (MCLI) provides a way to access Facebook Messenger from the command line. You can send and receive messages in both group chats and direct messages.
+Messenger-CLI (MCLI) provides a way to access Facebook Messenger from the command line. You can send and receive messages with notifications in both group chats and direct messages.
 
 It was written using [Node.js](https://nodejs.org) and [Facebook Chat API](https://github.com/Schmavery/facebook-chat-api).
 
@@ -22,6 +22,13 @@ MCLI will search your 20 most recent threads (configurable) for a chat name (for
 
 To send a message to someone else, simply specify a new recipient using the same syntax shown above.
 
+```
+> load: groupname/username
+```
+
+MCLI will search your 20 most recent threads (configurable) for a chat name (for group chats) or a person's name (for one-on-one chats) that matches `groupname/username`. Then it will load the latest 10 messages, you can simply continue to type new messages and they will be sent to that specified groupname or username.
+
+
 ## Special commands
 Below are a list of commands that, when included in messages, will not appear in the final text sent to the recipient, but will influence the behavior of the chat in some way.
 

index.js

@@ -2,6 +2,7 @@
 const login = require("facebook-chat-api");
 const fs = require("fs");
 const readline = require("readline");
+const notifier = require('node-notifier');
 // Internal colors module for Terminal output'
 const colored = require("./colors").colorString;
 // Global access variables
@@ -90,6 +91,11 @@ function main(api) {
 
 					// Log the incoming message and reset the prompt
 					newPrompt(`${colored(uinfo[msg.senderID].firstName, "fgblue")} in ${colored(tinfo.name, "fggreen")} ${atext}`, rl);
+					// Show up the notification for the new incoming message
+					notifier.notify({
+						title: 'Messenger CLI',
+						message: `You have unread messages from: ${uinfo[msg.senderID].firstName}`
+					});
 				});
 			});
 		} else if (msg.type == "event") { // Chat event received
@@ -113,21 +119,48 @@ function main(api) {
 			}
 		} else {
 			// Search for the group specified in the message
-			const search = line.substring(0, terminator);
-			getGroup(search, (err, group) => {
-				if (!err) {
-					// Send message to matched group
-					sendReplacedMessage(line.substring(terminator + 1), group, rl);
-
-					// Store the information of the last recipient so you don't have to specify it again
-					active = group;
-
-					// Update the prompt to indicate where messages are being sent by default
-					rl.setPrompt(colored(`[${active.name}] `, "fggreen"));
-				} else {
-					logError(err);
-				}
-			});
+			const cmd = line.substring(0, terminator);
+			if(cmd == "load") {
+				const search = line.substring(terminator + 1);
+				getGroup(search, (err, group) => {
+					if (!err) {
+						// Store the information of the last recipient so you don't have to specify it again
+						active = group;
+						// Load older 10 messages
+						api.getThreadHistory(group.threadID, 10, undefined, (err, history) => {
+							if(!err) {
+								for(let i = 0; i < history.length; i++) {
+									console.log(`${colored(history[i].senderName, "fggreen")}: ${history[i].body}`);
+								}
+								rl.setPrompt(colored(`[${active.name}] `, "fggreen"));						
+								timestamp = history[0].timestamp;
+							}
+							else {
+								logError(err);
+							}
+						});
+						// Update the prompt to indicate where messages are being sent by default
+					} else {
+						logError(err);
+					}
+				});
+			}
+			else {
+				getGroup(cmd, (err, group) => {
+					if (!err) {
+						// Send message to matched group
+						sendReplacedMessage(line.substring(terminator + 1), group, rl);
+
+						// Store the information of the last recipient so you don't have to specify it again
+						active = group;
+
+						// Update the prompt to indicate where messages are being sent by default
+						rl.setPrompt(colored(`[${active.name}] `, "fggreen"));
+					} else {
+						logError(err);
+					}
+				});
+			}
 		}
 	});
 }