106 lines
4.1 KiB
TypeScript
106 lines
4.1 KiB
TypeScript
import Event from "../core/event";
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import Command, {loadCommands} from "../core/command";
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import {hasPermission, getPermissionLevel, PermissionNames} from "../core/permissions";
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import $ from "../core/lib";
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import {Message, Permissions, Collection} from "discord.js";
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import {getPrefix} from "../core/structures";
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// It's a rather hacky solution, but since there's no top-level await, I just have to make the loading conditional.
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let commands: Collection<string, Command>|null = null;
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export default new Event({
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async on(message: Message)
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{
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// Load commands if it hasn't already done so. Luckily, it's called once at most.
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if(!commands)
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commands = await loadCommands();
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// Message Setup //
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if(message.author.bot)
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return;
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const prefix = getPrefix(message.guild);
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if(!message.content.startsWith(prefix))
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{
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if(message.client.user && message.mentions.has(message.client.user))
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message.channel.send(`${message.author.toString()}, my prefix on this guild is \`${prefix}\`.`);
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return;
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}
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const [header, ...args] = message.content.substring(prefix.length).split(/ +/);
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if(!commands.has(header))
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return;
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if(message.channel.type === "text" && !message.channel.permissionsFor(message.client.user || "")?.has(Permissions.FLAGS.SEND_MESSAGES))
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{
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let status;
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if(message.member?.hasPermission(Permissions.FLAGS.ADMINISTRATOR))
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status = "Because you're a server admin, you have the ability to change that channel's permissions to match if that's what you intended.";
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else
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status = "Try using a different channel or contacting a server admin to change permissions of that channel if you think something's wrong.";
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return message.author.send(`I don't have permission to send messages in ${message.channel.toString()}. ${status}`);
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}
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$.log(`${message.author.username}#${message.author.discriminator} executed the command "${header}" with arguments "${args}".`);
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// Subcommand Recursion //
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let command = commands.get(header);
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if(!command) return $.warn(`Command "${header}" was called but for some reason it's still undefined!`);
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const params: any[] = [];
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let isEndpoint = false;
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let permLevel = command.permission ?? Command.PERMISSIONS.NONE;
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for(let param of args)
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{
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if(command.endpoint)
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{
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if(command.subcommands || command.user || command.number || command.any)
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$.warn(`An endpoint cannot have subcommands! Check ${prefix}${header} again.`);
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isEndpoint = true;
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break;
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}
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const type = command.resolve(param);
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command = command.get(param);
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permLevel = command.permission ?? permLevel;
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if(type === Command.TYPES.USER)
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{
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const id = param.match(/\d+/g)![0];
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try {params.push(await message.client.users.fetch(id))}
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catch(error) {return message.channel.send(`No user found by the ID \`${id}\`!`)}
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}
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else if(type === Command.TYPES.NUMBER)
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params.push(Number(param));
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else if(type !== Command.TYPES.SUBCOMMAND)
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params.push(param);
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}
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if(!message.member)
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return $.warn("This command was likely called from a DM channel meaning the member object is null.");
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if(!hasPermission(message.member, permLevel))
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{
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const userPermLevel = getPermissionLevel(message.member);
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return message.channel.send(`You don't have access to this command! Your permission level is \`${PermissionNames[userPermLevel]}\` (${userPermLevel}), but this command requires a permission level of \`${PermissionNames[permLevel]}\` (${permLevel}).`);
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}
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if(isEndpoint)
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return message.channel.send("Too many arguments!");
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// Execute with dynamic library attached. //
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// The purpose of using $.bind($) is to clone the function so as to not modify the original $.
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// The cloned function doesn't copy the properties, so Object.assign() is used.
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// Object.assign() modifies the first element and returns that, the second element applies its properties and the third element applies its own overriding the second one.
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command.execute(Object.assign($.bind($), {
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args: params,
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author: message.author,
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channel: message.channel,
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client: message.client,
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guild: message.guild,
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member: message.member,
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message: message
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}, $));
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}
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}); |