Add config command

src/commands/config.ts

@@ -1,22 +1,61 @@
+import {TextChannel} from 'discord.js';
 import {CommandHandler} from '../interfaces';
+import {Settings} from '../models';
 
 const config: CommandHandler = {
   name: 'config',
   description: 'Change various bot settings.',
-  execute: (msg, args) => {
+  execute: async (msg, args) => {
+    if (args.length === 0) {
+      // Show current settings
+      const settings = await Settings.findByPk(msg.guild!.id);
+
+      if (settings) {
+        let response = `prefix: \`${settings.prefix}\`\n`;
+        response += `channel: ${msg.guild!.channels.cache.get(settings.channel)!.toString()}`;
+
+        await msg.channel.send(response);
+      }
+
+      return;
+    }
+
     const setting = args[0];
 
-    switch (setting) {
-      case 'prefix':
-        msg.channel.send('Prefix set');
-        break;
+    if (args.length !== 2) {
+      await msg.channel.send('🚫 incorrect number of arguments');
+      return;
+    }
 
-      case 'channel':
-        msg.channel.send('Channel bound');
+    switch (setting) {
+      case 'prefix': {
+        const newPrefix = args[1];
+
+        await Settings.update({prefix: newPrefix}, {where: {guildId: msg.guild!.id}});
+
+        await msg.channel.send(`👍 prefix updated to \`${newPrefix}\``);
         break;
+      }
+
+      case 'channel': {
+        const channel = msg.guild!.channels.cache.find(c => c.name === args[1]);
+
+        if (channel && channel.type === 'text') {
+          await Settings.update({channel: channel.id}, {where: {guildId: msg.guild!.id}});
+
+          await Promise.all([
+            (channel as TextChannel).send('hey apparently I\'m bound to this channel now'),
+            msg.react('👍')
+          ]);
+        } else {
+          await msg.channel.send('🚫 either that channel doesn\'t exist or you want me to become sentient and listen to a voice channel');
+        }
+
+        break;
+      }
 
       default:
-        msg.channel.send('Unknown setting');
+        await msg.channel.send('🚫 I\'ve never met this setting in my life');
     }
   }
 };