[Enahncement] Added help command functionality with prefixes, it now …

…also displays the usage of a command if available

commands/Misc/help.js

@@ -0,0 +1,147 @@
+const { SlashCommandBuilder } = require("@discordjs/builders");
+
+function printHelpByCollection(collection, category) {
+  const commands = collection
+    .filter((item) => item.category === category || category === null)
+    .map((command) => {
+      return (
+        "`" +
+        `${command.data.name || command.name} :` +
+        "`" +
+        " " +
+        `${command.data.description || command.description}, `
+      );
+    });
+  return commands || null;
+}
+
+module.exports = {
+  name: "help",
+  category: "Misc",
+  aliases: ["h"],
+  description: "Return all commands, or one specific command",
+  usage: "h <category> <command>, both are optional",
+  async run(message, args, client, prefix) {
+    const listCategories = (collection) => {
+      return collection.map((command) => "`" + command.category + "`");
+    };
+
+    function onlyUnique(value, index, self) {
+      return self.indexOf(value) === index;
+    }
+
+    const cmd = args.join(" ");
+    const categories = listCategories(client.commands).filter(onlyUnique);
+
+    if (!cmd) {
+      const embed = {
+        color: "#9dcc37",
+        title: `${client.user.username}'s Categories!`,
+        description:
+          `These are my command categories ${categories.join(
+            ", "
+          )}. To get more Information about each category, use ` +
+          "`" +
+          `${prefix}help <category>` +
+          "`",
+        timestamp: new Date(),
+        footer: {
+          text: `Requested by ${message.member.user.username}`,
+          icon_url: `${message.member.user.avatarURL()}`,
+        },
+      };
+      return await message.channel.send({ embeds: [embed] });
+    }
+
+    if (cmd) {
+      const command =
+        client.commands.get(cmd) ||
+        client.commands.find((cmd) => cmd.aliases && cmd.aliases.includes(cmd));
+
+      if (categories.includes("`" + cmd + "`")) {
+        const commandsperCategory = printHelpByCollection(client.commands, cmd);
+        if (!commandsperCategory)
+          return await message.channel.send(
+            `Category does not exist. Make sure to write the category name as it is`
+          );
+        const embed = {
+          color: "#9dcc37",
+          title: `${client.user.username}'s ${cmd} Commands!`,
+          description: `${commandsperCategory.join("\n")}`,
+          timestamp: new Date(),
+          footer: {
+            text: `Requested by ${message.member.user.username}`,
+            icon_url: `${message.member.user.avatarURL()}`,
+          },
+        };
+        return await message.channel.send({ embeds: [embed] });
+      }
+
+      if (!command && !categories.includes("`" + cmd + "`")) {
+        return await message.channel.send(
+          "What you provided is neither a command nor a category"
+        );
+      }
+
+      if (!categories.includes("`" + cmd + "`")) {
+        const embed = {
+          color: "#9dcc37",
+          fields: [
+            {
+              name: "Category",
+              value: `${command?.category}`,
+            },
+            {
+              name: "Description",
+              value: `${command?.description}`,
+            },
+            {
+              name: "Usage",
+              value: "`" + `${prefix}${command.usage}` + "`",
+            },
+          ],
+          timestamp: new Date(),
+          footer: {
+            text: `Requested by ${message.member.user.username}`,
+            icon_url: `${message.member.user.avatarURL()}`,
+          },
+        };
+
+        return await message.channel.send({ embeds: [embed] });
+      }
+    }
+  },
+  data: new SlashCommandBuilder()
+    .setName("help")
+    .setDescription("Shows all available commands for this bot!")
+    .addStringOption((option) =>
+      option
+        .setName("category")
+        .setDescription("show help by category")
+        .addChoice("Admin", "admin")
+        .addChoice("Anime", "anime")
+        .addChoice("Fun", "fun")
+        .addChoice("Music", "music")
+        .addChoice("Misc", "misc")
+    ),
+  async execute(interaction, client) {
+    await interaction.deferReply();
+    const category = interaction.options.getString("category");
+
+    let help;
+    help = printHelpByCollection(client.commands, category);
+
+    const embed = {
+      color: "#9dcc37",
+      title: `${client.user.username}'s Commands!`,
+      description: `${help.join("\n")}`,
+      timestamp: new Date(),
+      footer: {
+        text: `Requested by ${interaction.user.username}`,
+        icon_url: `${interaction.user.avatarURL()}`,
+      },
+    };
+
+    await interaction.followUp({ embeds: [embed] });
+  },
+};