Class commands, improved sharding, and many other changes (#88)

* Load commands recursively

* Sort commands

* Missed a couple of spots

* missed even more spots apparently

* Ported commands in "fun" category to new class-based format, added babel eslint plugin

* Ported general commands, removed old/unneeded stuff, replaced moment with day, many more fixes I lost track of

* Missed a spot

* Removed unnecessary abort-controller package, add deprecation warning for mongo database

* Added imagereload, clarified premature end message

* Fixed docker-compose path issue, added total bot uptime to stats, more fixes for various parts

* Converted image commands into classes, fixed reload, ignore another WS event, cleaned up command handler and image runner

* Converted music/soundboard commands to class format

* Cleanup unnecessary logs

* awful tag command class port

* I literally somehow just learned that you can leave out the constructor in classes

* Pass client directly to commands/events, cleaned up command handler

* Migrated bot to eris-sharder, fixed some error handling stuff

* Remove unused modules

* Fixed type returning

* Switched back to Eris stable

* Some fixes and cleanup

* might wanna correct this

* Implement image command ratelimiting

* Added Bot token prefix, added imagestats, added running endpoint to API

classes/command.js

@@ -0,0 +1,19 @@
+class Command {
+  constructor(client, message, args, content) {
+    this.client = client;
+    this.message = message;
+    this.args = args;
+    this.content = content;
+  }
+
+  async run() {
+    return "It works!";
+  }
+
+  static description = "No description found";
+  static aliases = [];
+  static arguments = [];
+  static requires = [];
+}
+
+module.exports = Command;

classes/imageCommand.js

@@ -0,0 +1,125 @@
+const Command = require("./command.js");
+const magick = require("../utils/image.js");
+const imageDetect = require("../utils/imagedetect.js");
+const collections = require("../utils/collections.js");
+
+class ImageCommand extends Command {
+  /*this.embed = {
+      "title": "Your image is being generated! (PRELIMINARY EMBED)",
+      "description": "The current progress is outlined below:",
+      "color": 16711680,
+      "footer": {
+        "text": "Step 2/3"
+      },
+      "author": {
+        "name": "Processing...",
+        "icon_url": "https://cdn.discordapp.com/avatars/429305856241172480/a20f739886ae47cfb10fa069416e8ed3.jpg"
+      },
+      "fields": [
+        {
+          "name": "Downloading...",
+          "value": "✅ Done!"
+        },
+        {
+          "name": "Processing...",
+          "value": "<a:processing:818243325891051581> In progress"
+        },
+        {
+          "name": "Uploading...",
+          "value": "<a:processing:818243325891051581> Waiting for previous steps to complete"
+        }
+      ]
+    };*/
+
+  criteria() {
+    return true;
+  }
+
+  async run() {
+    // check if this command has already been run in this channel with the same arguments, and we are awaiting its result
+    // if so, don't re-run it
+    if (collections.runningCommands.has(this.message.author.id) && (new Date(collections.runningCommands.get(this.message.author.id)) - new Date(this.message.createdAt)) < 5000) {
+      return `${this.message.author.mention}, please slow down a bit.`;
+    }
+    // before awaiting the command result, add this command to the set of running commands
+    collections.runningCommands.set(this.message.author.id, this.message.createdAt);
+  
+    const magickParams = {
+      cmd: this.constructor.command
+    };
+
+    if (this.constructor.requiresImage) {
+      try {
+        const image = await imageDetect(this.client, this.message);
+        if (image === undefined) {
+          collections.runningCommands.delete(this.message.author.id);
+          return `${this.message.author.mention}, ${this.constructor.noImage}`;
+        }
+        magickParams.path = image.path;
+        magickParams.type = image.type;
+        magickParams.url = image.url; // technically not required but can be useful for text filtering
+        magickParams.delay = image.delay;
+        if (this.constructor.requiresGIF) magickParams.onlyGIF = true;
+      } catch (e) {
+        collections.runningCommands.delete(this.message.author.id);
+        throw e;
+      }
+      
+    }
+
+    if (this.constructor.requiresText) {
+      if (this.args.length === 0 || !this.criteria(this.args)) {
+        collections.runningCommands.delete(this.message.author.id);
+        return `${this.message.author.mention}, ${this.constructor.noText}`;
+      }
+    }
+
+    switch (typeof this.params) {
+      case "function":
+        Object.assign(magickParams, this.params(this.args, magickParams.url));
+        break;
+      case "object":
+        Object.assign(magickParams, this.params);
+        break;
+    }
+
+    let status;
+    if (magickParams.type === "image/gif") {
+      status = await this.processMessage(this.message);
+    } else {
+      this.message.channel.sendTyping();
+    }
+
+    try {
+      const { buffer, type } = await magick.run(magickParams).catch(e => {
+        throw e;
+      });
+      if (status && status.channel.messages.get(status.id)) await status.delete();
+      if (type === "nogif" && this.constructor.requiresGIF) return `${this.message.author.mention}, that isn't a GIF!`;
+      return {
+        file: buffer,
+        name: `${this.constructor.command}.${type}`
+      };
+    } catch (e) {
+      if (status && status.channel.messages.get(status.id)) await status.delete();
+      if (e.toString().includes("Not connected to image server")) return `${this.message.author.mention}, I'm still trying to connect to the image servers. Please wait a little bit.`;
+      throw e;
+    } finally {
+      collections.runningCommands.delete(this.message.author.id);
+    }
+    
+  }
+
+  processMessage(message) {
+    return message.channel.createMessage(`${process.env.PROCESSING_EMOJI || "<a:processing:479351417102925854>"} Processing... This might take a while`);
+  }
+
+  static requiresImage = true;
+  static requiresText = false;
+  static requiresGIF = false;
+  static noImage = "you need to provide an image!";
+  static noText = "you need to provide some text!";
+  static command = "";
+}
+
+module.exports = ImageCommand;

classes/musicCommand.js

@@ -0,0 +1,13 @@
+const Command = require("./command.js");
+const soundPlayer = require("../utils/soundplayer.js");
+
+class MusicCommand extends Command {
+  constructor(client, message, args, content) {
+    super(client, message, args, content);
+    this.connection = soundPlayer.players.get(message.channel.guild.id);
+  }
+
+  static requires = ["sound"];
+}
+
+module.exports = MusicCommand;