RocketChat/Rocket.Chat

import type { IMessage, RequiredField, SlashCommandPreviews } from '@rocket.chat/core-typings';
import type { ServerMethods } from '@rocket.chat/ddp-client';
import { Meteor } from 'meteor/meteor';

import { slashCommands } from '../../../utils/server/slashCommand';

declare module '@rocket.chat/ddp-client' {
    // eslint-disable-next-line @typescript-eslint/naming-convention
    interface ServerMethods {
        getSlashCommandPreviews(command: {
            cmd: string;
            params: string;
            msg: RequiredField<Partial<IMessage>, 'rid'>;
        }): SlashCommandPreviews | undefined;
    }
}

Meteor.methods<ServerMethods>({
    async getSlashCommandPreviews(command) {
        if (!Meteor.userId()) {
            throw new Meteor.Error('error-invalid-user', 'Invalid user', {
                method: 'getSlashCommandPreview',
            });
        }

        if (!command?.cmd || !slashCommands.commands[command.cmd]) {
            throw new Meteor.Error('error-invalid-command', 'Invalid Command Provided', {
                method: 'executeSlashCommandPreview',
            });
        }

        const theCmd = slashCommands.commands[command.cmd];
        if (!theCmd.providesPreview) {
            throw new Meteor.Error('error-invalid-command', 'Command Does Not Provide Previews', {
                method: 'executeSlashCommandPreview',
            });
        }

        return slashCommands.getPreviews(command.cmd, command.params, command.msg);
    },
});