Bring discord protocol up to date with gamedig 3.0

protocols/core.js

@@ -146,7 +146,10 @@ class Core extends EventEmitter {
     }
 
     assertValidPort(port) {
-        if (!port || port < 1 || port > 65535) {
+        if (!port) {
+            throw new Error("Could not determine port to query. Did you provide a port?");
+        }
+        if (port < 1 || port > 65535) {
             throw new Error("Invalid tcp/ip port: " + port);
         }
     }

protocols/discord.js

@@ -1,32 +1,31 @@
 const Core = require('./core');
 
 class Discord extends Core {
-  constructor() {
-    super();
-    this.dnsResolver = { resolve: function(address) {return {address: address} } };
-  }
-
-  async run(state) {
-    this.usedTcp = true;
-    const raw = await this.request({
-      uri: 'https://discordapp.com/api/guilds/' + this.options.address + '/widget.json',
-    });
-    const json = JSON.parse(raw);
-    state.name = json.name;
-    if (json.instant_invite) {
-      state.connect = json.instant_invite;
-    } else {
-      state.connect = 'https://discordapp.com/channels/' + this.options.address
+    async run(state) {
+        const guildId = this.options.guildId;
+        if (typeof guildId !== 'string') {
+            throw new Error('guildId option must be set when querying discord. Ensure the guildId is a string and not a number.'
+                    + " (It's too large of a number for javascript to store without losing precision)");
+        }
+        this.usedTcp = true;
+        const raw = await this.request({
+            url: 'https://discordapp.com/api/guilds/' + guildId + '/widget.json',
+        });
+        const json = JSON.parse(raw);
+        state.name = json.name;
+        if (json.instant_invite) {
+            state.connect = json.instant_invite;
+        } else {
+            state.connect = 'https://discordapp.com/channels/' + guildId;
+        }
+        for (const member of json.members) {
+            const {username: name, ...rest} = member;
+            state.players.push({ name, ...rest });
+        }
+        delete json.members;
+        state.maxplayers = 500000;
+        state.raw = json;
     }
-    state.players = json.members.map(v => {
-      return {
-        name: v.username,
-        team: v.status
-      }
-    });
-    state.maxplayers = json.presence_count;
-    state.raw = json;
-  }
 }
 
 module.exports = Discord;