some changes to utilities

utility/math.ts

@@ -1,4 +1,4 @@
-import { evaluate, simplify } from 'mathjs';
+import { evaluate } from 'mathjs';
 
 function done(data: string): void {
   if (process && process.send) {
@@ -7,14 +7,7 @@ function done(data: string): void {
 }
 
 process.once('message', (msg) => {
-  msg = msg.toString();
-
-  const dat = msg.split(' ');
-  if (!(dat.length > 1)) {
-    return;
-  }
-
-  let expr = dat.slice(1).join(' ');
+  let expr = msg.toString();
 
   if (!expr) {
     return done('null');
@@ -27,11 +20,7 @@ process.once('message', (msg) => {
   let result = 'null';
 
   try {
-    if (dat[0] === 'eval') {
     result = evaluate(expr);
-    } else if (dat[0] === 'simplify') {
-        result = simplify(expr).toString();
-    }
   } catch (e) {
     return done(e.message);
   }

utility/plugin.ts

@@ -59,7 +59,7 @@ const urlRegex = /(((ftp|https?):\/\/)[-\w@:%_+.~#?,&//=]+)/g;
 const fork = cprog.fork;
 
 // Run mathjs in a separate thread to avoid the killing of the main process
-function opMath(expression: string, method = 'eval'): Promise<string> {
+function opMath(expression: string): Promise<string> {
   return new Promise((resolve, reject) => {
     // Fork the script
     const mathThread = fork(path.join(__dirname, 'math.js'));
@@ -74,7 +74,7 @@ function opMath(expression: string, method = 'eval'): Promise<string> {
     }, 8000);
 
     // Send data to the thread to process
-    mathThread.send(method + ' ' + expression);
+    mathThread.send(expression);
 
     // Recieve data
     mathThread.on('message', (chunk) => {
@@ -131,19 +131,13 @@ function RGBToHSL(r: number, g: number, b: number): {[key: string]: number} | nu
   // No difference
   if (delta === 0) {
     h = 0;
-  }
-
-  // Red is max
+  } // Red is max
   else if (cmax === r) {
     h = ((g - b) / delta) % 6;
-  }
-
-  // Green is max
+  } // Green is max
   else if (cmax === g) {
     h = (b - r) / delta + 2;
-  }
-
-  // Blue is max
+  } // Blue is max
   else {
     h = (r - g) / delta + 4;
   }
@@ -341,6 +335,11 @@ function addCommands(plugin: UtilityPlugin, commands: any): void {
   cmds.push({
     name: 'numsys',
     execute: async (msg: IMessage, spec: any, prefix: string, ...simplified: any[]): Promise<boolean> => {
+      if (simplified.length < 3) {
+        msg.resolve('Too few arguments!');
+        return true;
+      }
+
       const input = simplified[0];
       const src = simplified[1].toLowerCase();
       const dst = simplified[2].toLowerCase();
@@ -429,32 +428,9 @@ function addCommands(plugin: UtilityPlugin, commands: any): void {
 
       return true;
     },
-    aliases: ['evaluate', 'math', 'equation', 'calc'],
+    aliases: ['math', 'calc'],
     usage: '<expression>',
-    description: 'Evaluate a math expression'
-  });
-
-  cmds.push({
-    name: 'simplify',
-    execute: async (msg: IMessage, spec: any, prefix: string, ...simplified: any[]): Promise<boolean> => {
-      if (!simplified[0]) {
-        return true;
-      }
-
-      const wholeRow = msg.text.split(' ').slice(1).join(' ');
-
-      try {
-        const repl = await opMath(wholeRow, 'simplify');
-        msg.resolve(repl);
-      } catch (e) {
-        msg.resolve('Could not evaluate expression:', e.message);
-      }
-
-      return true;
-    },
-    aliases: ['mathsimple', 'algebra'],
-    usage: '<expression>',
-    description: 'Simplify a math expression'
+    description: 'Evaluate a math expression (See https://mathjs.org/)'
   });
 
   cmds.push({
@@ -516,9 +492,8 @@ function addCommands(plugin: UtilityPlugin, commands: any): void {
         msg.resolve('Invalid colors');
         return true;
       }
-      const hex = rgbToHex(r, g, b);
 
-      msg.resolve(hex);
+      msg.resolve(rgbToHex(r, g, b));
       return true;
     },
     description: 'Convert RGB to HEX colors',
@@ -762,6 +737,11 @@ function addCommands(plugin: UtilityPlugin, commands: any): void {
   cmds.push({
     name: 'randomnumber',
     execute: async (msg: IMessage, spec: any, prefix: string, ...simplified: any[]): Promise<boolean> => {
+      if (simplified.length < 2) {
+        msg.resolve('Too few arguments!');
+        return true;
+      }
+
       let min = parseInt(simplified[0], 10);
       let max = parseInt(simplified[1], 10);
       let count = parseInt(simplified[2], 10);
@@ -793,7 +773,7 @@ function addCommands(plugin: UtilityPlugin, commands: any): void {
     },
     description: 'Generate a random number between <min> and <max>.',
     usage: '<min> <max> [<count>]',
-    aliases: ['rnum', 'rand']
+    aliases: ['rnum', 'rand', 'rng']
   });
 
   commands.registerCommand(cmds.map((x: any) => {