utility.flagdump: add mention lookup

src/modules/utility.js

@@ -259,14 +259,8 @@ const USER_FLAGS = [
   "CERTIFIED_MODERATOR",
 ];
 
-const flagdump = new Command("flagdump");
-flagdump.category = CATEGORY;
-flagdump.helpText = "Dumps Discord user flags.";
-flagdump.usage = "[flags]";
-flagdump.callback = function (msg, line) {
-  const num = parseInt(line);
-  if (!isNaN(num)) {
-    const bits = num.toString(2);
+function flagFromInt(int) {
+  const bits = int.toString(2);
   const splitBits = bits.split("").reverse();
 
   const reassignedBits = {};
@@ -279,18 +273,45 @@ flagdump.callback = function (msg, line) {
     (bit) => reassignedBits[bit] == 1
   );
 
-    let out = "```\n";
+  let out = "";
 
   for (const flag of flags) {
     out +=
       (USER_FLAGS[flag] || "<Undocumented Flag>") +
       ` (1 << ${flag}, ${1n << BigInt(flag)})\n`;
   }
-    out += "```";
 
   return out;
+}
+
+const flagdump = new Command("flagdump");
+flagdump.category = CATEGORY;
+flagdump.helpText = "Dumps Discord user flags.";
+flagdump.usage = "[flags or user mention]";
+flagdump.callback = async function (msg, line) {
+  const num = parseInt(line);
+  if (/<@!?([0-9]*)>/.test(line)) {
+    const id = line.match(/<@?!([0-9]*)>/)[1];
+    let user = await msg.channel.guild.fetchMembers({userIDs: [id]});
+    if (!user[0]) {
+      user = hf.bot.users.get(id);
     } else {
-    return "Argument provided is not a number.";
+      user = user[0].user;
+    }
+
+    if (!user) {
+      return "User not cached.";
+    } else {
+      return `\`${user.username}#${
+        user.discriminator
+      }\`'s public flags:\n\`\`\`${flagFromInt(user.publicFlags)}\`\`\``;
+    }
+  } else if (!isNaN(num)) {
+    return `\`\`\`\n${flagFromInt(num)}\`\`\``;
+  } else {
+    return `\`${msg.author.username}#${
+      msg.author.discriminator
+    }\`'s public flags:\n\`\`\`${flagFromInt(msg.author.publicFlags)}\`\`\``;
   }
 };
 hf.registerCommand(flagdump);