From 72c8d382c5211c7dc5aa71bdfe1704cd5f2718aa Mon Sep 17 00:00:00 2001
From: Dragon Fire <danielbodendahl@gmail.com>
Date: Sat, 23 May 2020 13:43:13 -0400
Subject: [PATCH] Command Leaderboard

---
 README.md                            |  3 +-
 Xiao.js                              |  5 +++
 commands/util/command-leaderboard.js | 51 ++++++++++++++++++++++++++++
 structures/Command.js                |  1 +
 4 files changed, 59 insertions(+), 1 deletion(-)
 create mode 100644 commands/util/command-leaderboard.js

diff --git a/README.md b/README.md
index 88b7308c..583fba74 100644
--- a/README.md
+++ b/README.md
@@ -224,13 +224,14 @@ in the appropriate channel's topic to use it.
 
 ## Commands
 
-Total: 438
+Total: 441
 
 ### Utility:
 
 * **eval:** Executes JavaScript code. (Owner-Only)
 * **changelog:** Responds with the bot's latest 10 commits.
 * **cloc:** Responds with the bot's code line count.
+* **command-leaderboard:** Responds with the bot's most used commands.
 * **credit:** Responds with a command's credits list.
 * **donate:** Responds with the bot's donation links.
 * **help:** Displays a list of available commands, or detailed information for a specific command.
diff --git a/Xiao.js b/Xiao.js
index c45876e9..ceb0cfd3 100644
--- a/Xiao.js
+++ b/Xiao.js
@@ -115,6 +115,11 @@ client.on('error', err => client.logger.error(err.stack));
 
 client.on('warn', warn => client.logger.warn(warn));
 
+client.on('commandRun', command => {
+	if (command.uses === undefined) return;
+	command.uses++;
+});
+
 client.on('commandError', (command, err) => client.logger.error(`[COMMAND:${command.name}]\n${err.stack}`));
 
 client.login(XIAO_TOKEN);
diff --git a/commands/util/command-leaderboard.js b/commands/util/command-leaderboard.js
new file mode 100644
index 00000000..8114c713
--- /dev/null
+++ b/commands/util/command-leaderboard.js
@@ -0,0 +1,51 @@
+const Command = require('../../structures/Command');
+const { stripIndents } = require('common-tags');
+
+module.exports = class CommandLeaderboardCommand extends Command {
+	constructor(client) {
+		super(client, {
+			name: 'command-leaderboard',
+			aliases: ['cmd-lb', 'cmd-leaderboard', 'command-lb'],
+			group: 'util',
+			memberName: 'command-leaderboard',
+			description: 'Responds with the bot\'s most used commands.',
+			guarded: true,
+			args: [
+				{
+					key: 'page',
+					prompt: 'What page do you want to view?',
+					type: 'integer',
+					min: 1,
+					max: () => Math.ceil(this.client.registry.commands.size / 10)
+				}
+			]
+		});
+	}
+
+	run(msg, { page }) {
+		return msg.say(stripIndents`
+			__**Command Usage Leaderboard (as of Last Restart):**__
+			${this.makeLeaderboard(page).join('\n')}
+		`);
+	}
+
+	makeLeaderboard(page) {
+		let i = 0;
+		let previousPts = null;
+		let positionsMoved = 1;
+		return this.client.registry.commands
+			.filter(command => command.uses !== undefined)
+			.sort((a, b) => b.uses - a.uses)
+			.map(command => {
+				if (previousPts === command.uses) {
+					positionsMoved++;
+				} else {
+					i += positionsMoved;
+					positionsMoved = 1;
+				}
+				previousPts = command.uses;
+				return `**${i}.** ${command.name} (${command.uses} Use${command.uses === 1 ? '' : 's'})`;
+			})
+			.slice((page - 1) * 10, page * 10);
+	}
+};
diff --git a/structures/Command.js b/structures/Command.js
index 40b59c5a..53c1054d 100644
--- a/structures/Command.js
+++ b/structures/Command.js
@@ -6,6 +6,7 @@ module.exports = class XiaoCommand extends Command {
 
 		this.argsSingleQuotes = info.argsSingleQuotes || false;
 		this.throttling = info.throttling || { usages: 1, duration: 2 };
+		this.uses = 0;
 		this.credit = info.credit || [];
 		this.credit.push({
 			name: 'Dragon Fire',