noctbot/bot/src/plugins/help.ts

import { isAuthorisedAsync } from "../util";
import { plgMgr, COMMAND_PREFIX } from "src/main";
import { Command, ICommandData, Plugin } from "src/model/plugin";
import { client } from "src/client";
import { tryDo } from "../../../shared/lib/src/common/async_utils";

@Plugin
export class Help {
    @Command({
        type: "mention",
        pattern: "help",
        allowDM: true
    })
    async showHelp({ message }: ICommandData): Promise<void> {
        const isAuthed = await isAuthorisedAsync(message.member ?? message.author);

        let baseCommands = "\n";
        let modCommands = "\n";
        let prefixCommands = "\n";
        
        for (const doc of plgMgr.documentation) {
            if (isAuthed && doc.auth) {
                if (doc.type == "prefix") 
                    prefixCommands = `${prefixCommands}${COMMAND_PREFIX}${doc.example}  -  ${doc.doc}\n`;
                else if (doc.type == "mention")
                    modCommands = `${modCommands}${doc.example}  -  ${doc.doc}\n`;
            }
            else if (!doc.auth)
                baseCommands = `${baseCommands}${doc.example} - ${doc.doc}\n`;
        }

        let msg = `Hello! I am ${client.botUser.username}! My job is to help with C(O)M-related problems!\nPing me with one of the following commands:\n\`\`\`${baseCommands}\`\`\``;

        if (isAuthed)
            msg = `${msg}\n👑**Moderator commands**👑\n\`\`\`${modCommands}\`\`\`\n**Prefix commands**\`\`\`${prefixCommands}\`\`\``;

        const dmResult = await tryDo(message.author.createDM());

        if (dmResult.ok) {
            await tryDo(message.delete());
            const result = await tryDo(dmResult.result.send(msg));
            if (result.ok)
                return;
        }

        message.reply(msg);
    }
}