galactic-bot/structure/client/components/inhibitors/MemberPermissions.js

const { Inhibitor } = require('../../../interfaces/');

const safeCommands = ['command:settings', 'command:grant', 'command:revoke'];

class Permissions extends Inhibitor {

    constructor(client) {

        super(client, {
            name: 'permissions',
            priority: 10,
            guarded: true,
            guild: true
        });

    }

    async execute(message, command) {

        const missing = await message.guild._checkPermissions(message, command);

        if(missing.length > 0) {
            return super._fail({ missing: missing.join(', ') });
        }

        return super._succeed();

    }

    _checkDiscord(message, permissions) {
        return message.channel.permissionsFor(message.member).missing(permissions);
    }

    async _checkGrants(message, permission) { //async just incase
        const _permissions = await message.guild.permissions();
        const roles = message.member.roles.cache.map((r) => r.id);
        const { channelId } = message.channel;
        const { userId } = message.member;

        let allowed = false;
        for(const [ id, permissions ] of Object.entries(_permissions)) {
            if(id === userId || roles.includes(id)) {
                if(permissions.global.includes(permission)) {
                    allowed = true; break; 
                }
                const channel = permissions.channels[channelId];
                if(!channel) continue;
                if(channel.includes(permission)) allowed = true; break;
            }
            continue;
        }
        return allowed ? [] : [permission];
    }

}

module.exports = Permissions;