lc leaderboard command now general use (#239)

* add query for leetcode leaderboard

* lint fix

* lc leaderboard embed

* lint fix

* remove useless util function

* lint is quite annoying vro

* return error stack trace on reject

* lc leaderboard command now general use

Author: adarshm11

src/commands/util/leetcodeLeaderboard.js

@@ -0,0 +1,101 @@
+const Command = require('../Command');
+const {
+  queryLeetcodeLeaderboard
+} = require('../../APIFunctions/LeetcodeLeaderboard');
+const { EmbedBuilder } = require('discord.js');
+
+const MONTHS = [
+  'January', 'February', 'March', 'April', 'May', 'June',
+  'July', 'August', 'September', 'October', 'November', 'December'
+];
+
+module.exports = new Command({
+  name: 'leetcode',
+  description: 'Query the LeetCode Leaderboard',
+  aliases: [],
+  example: 's!leetcode',
+  permissions: 'general',
+  category: 'information',
+  execute: async (message) => {
+    const data = await queryLeetcodeLeaderboard();
+
+    if (!data || !data.leaderboard) {
+      return message.channel.send('Error querying LeetCode Leaderboard.');
+    }
+
+    const { leaderboard, month } = data;
+    const top10 = leaderboard.slice(0, 10);
+
+    let maxNameLen = 'Username'.length;
+    let maxPointsLen = 'Points'.length;
+
+    top10.forEach((user, index) => {
+      let name = user.username;
+      if (name.length > 10) {
+        name = name.substring(0, 10);
+      }
+      user.displayName = name;
+
+      const rank = index + 1;
+      const rankStr = rank < 10 ? ` ${rank}. ` : `${rank}. `;
+      
+      if (rankStr.length + name.length > maxNameLen) {
+        maxNameLen = rankStr.length + name.length;
+      }
+      
+      const pointsStr = user.points.toString();
+      if (pointsStr.length > maxPointsLen) {
+        maxPointsLen = pointsStr.length;
+      }
+    });
+
+    const gap = 4;
+    
+    let description = '```ansi\n';
+    
+    const title = 'LeetCode Leaderboard';
+    const totalWidth = maxNameLen + gap + maxPointsLen;
+    const titlePadding = Math.floor((totalWidth - title.length) / 2);
+    description += `\u001b[0;33m${' '.repeat(titlePadding)}${title}\u001b[0m\n`;
+    
+    const headerName = 'Username';
+    const headerPoints = 'Points';
+    const headerNamePadding = ' '.repeat(maxNameLen - headerName.length + gap);
+    const headerPointsPadding = ' '.repeat(maxPointsLen - headerPoints.length);
+    
+    description += `\u001b[0;37m${headerName}${headerNamePadding}` +
+      `${headerPointsPadding}${headerPoints}\u001b[0m\n`;
+
+    top10.forEach((user, index) => {
+      const rank = index + 1;
+      const name = user.displayName;
+      const points = user.points.toString();
+      
+      const rankStr = rank < 10 ? ` ${rank}. ` : `${rank}. `;
+      const nameCol = `${rankStr}${name}`;
+      const namePadding = ' '.repeat(maxNameLen - nameCol.length + gap);
+      const pointsPadding = ' '.repeat(maxPointsLen - points.length);
+      
+      let colorCode = '\u001b[0;37m';
+      if (rank === 1) colorCode = '\u001b[0;33m';
+      else if (rank === 2) colorCode = '\u001b[0;31m';
+      else if (rank === 3) colorCode = '\u001b[0;34m';
+      
+      description += `${colorCode}${nameCol}${namePadding}` +
+        `${pointsPadding}${points}\u001b[0m\n`;
+    });
+
+    const monthText = `Month: ${MONTHS[month]}`;
+    const monthPadding = Math.floor((totalWidth - monthText.length) / 2);
+    description += `\u001b[0;33m${' '.repeat(monthPadding)}` +
+      `${monthText}\u001b[0m\n`;
+
+    description += '```';
+
+    const embed = new EmbedBuilder()
+      .setColor('#000000')
+      .setDescription(description);
+
+    return message.channel.send({ embeds: [embed] });
+  },
+});