const { Structures } = require('discord.js');

const User = Structures.extend('User', (User) => {

    class ExtendedUser extends User {

        constructor(...args) {

            super(...args);

            this._totalPoints = null;
            
            this._settings = null; //internal cache of current users' settings; should ALWAYS stay the same as database.
            this._cached = Date.now();

        }

        async settings() {
            if (!this._settings) this._settings = this.client.transactionHandler.send({ provider: 'mongodb', request: { collection: 'users', type: 'findOne', query: { user: this.id } } });
            if (this._settings instanceof Promise) this._settings = await this._settings || {};
            return this._settings;
        }
        
        async totalPoints(guild, points) {
            if(this._totalPoints === null) {
                const query = [{ $match: { $or: [{ expiration: { $gt: Math.floor(Date.now()/1000) } }, { expiration: 0 }], guild: guild.id, target: this.id } },
                    { $group: { _id: null, pointSum: { $sum: "$points" } } }];
                const aggregate = await this.client.transactionHandler.send({
                    provider: 'mongodb',
                    request: {
                        collection: 'infractions',
                        type: 'aggregate',
                        query
                    }
                });
                this._totalPoints = aggregate[0].pointSum;
            }
            this._totalPoints += points;
            return this._totalPoints;
        }

        get developer() {
            return this.client._options.bot.owners.includes(this.id);
        }

        get timeSinceCached() {
            return Date.now()-this._cached;
        }

        get prefix() {
            return this.client._options.bot.prefix;
        }

    }

    return ExtendedUser;

});

module.exports = User;