Implemented error suggestions

If no known command is given. It replies with a list of most likely commands.

commands.js

@@ -51,6 +51,9 @@ function fetchCommand(input, commands, threshhold){
     return candidates;
 }
 
+module.exports.fetchCommand = fetchCommand;
+module.exports.getEditDistance = getEditDistance;
+
 /* //Test code
 const commands = {};
 commands['homeserver'] = {};

index.js

@@ -2,6 +2,7 @@ const fs = require('fs');
 const remoteExec = require('./remoteExec.js');
 const sdk = require('matrix-js-sdk');
 const yaml = require('js-yaml');
+const commandUtil = require('./commands.js');
 
 global.config = yaml.safeLoad(fs.readFileSync('config.yaml'));
 const matrixClient = sdk.createClient({
@@ -24,7 +25,6 @@ process.on('unhandledRejection', (reason) => {
     console.log('Reason: ' + reason);
 });
 
-
 const commands = {};
 
 commands['rebuild'] = {};
@@ -61,7 +61,9 @@ matrixClient.on('Room.timeline', function(event, room, resetTimeline) {
     }
     project = project[1];
 
-    if(commands[project] !== undefined) {
+    let command = commands[project];
+
+    if(command !== undefined) {
         const command = commands[project];
 
         const args = body.match(command.regex);
@@ -71,6 +73,14 @@ matrixClient.on('Room.timeline', function(event, room, resetTimeline) {
         }
 
         command.exec(args, room, event);
+    }else{ //command not found
+        let tmp = commandUtil.fetchCommand(project, commands);
+        let suggestions = "";
+        for(let i = 0; i < tmp.length; i++){
+            suggestions += "\n"+tmp[i];
+        }
+        matrixClient.sendNotice(room.roomId, 'Unrecognized command.\n' +
+            'Did you mean:'+suggestions);
     }
 });