let lockdown = false;

const Discord = require('discord.js');
const logger = require('./logger');
const config = require('config');

const client = new Discord.Client();

let messagesToSend = [];

let connected = false;

// TODO Maybe we need to only finish init when ready is called, or maybe we don't wait for it
module.exports = {
    adminAlertChannelId: "",

	init: (discordToken, adminAlertChannelId, errorCb, cb) => {
        this.adminAlertChannelId = adminAlertChannelId;

        client.on('ready', () => {
            logger.info("DISCORD_READY", `Logged in as ${client.user.tag}!`);
            connected = true;
            messagesToSend.forEach((message) => {
                this.sendAdminAlertMessage(message);
            });
            messagesToSend = [];
        });

        client.on('invalidated', () => {
            logger.info("DISCORD_INVALIDATED", `Discord client was invalidated.`);
            connected = false;
        });

        client.on('disconnected', () => {
            logger.info("DISCORD_DISCONNECTED", `Discord client was disconnected.`);
            connected = false;
        });

        client.on('error', (err) => {
            logger.info("DISCORD_ERROR", `Discord client encountered an error: ${err.message}.`);
        });

        client.login(discordToken);

		if (lockdown) return this._lockdown();
		cb();
    },
    
    sendAdminAlertMessage: (message, color, type, critical, extraFields) => {
        if (!connected) return messagesToSend.push(message);
        else {
            let channel = client.channels.find("id", this.adminAlertChannelId);
            if (channel !== null) {

                let richEmbed = new Discord.RichEmbed();
                richEmbed.setAuthor("Musare Logger", config.get("domain")+"/favicon-194x194.png", config.get("domain"));
                richEmbed.setColor(color);
                richEmbed.setDescription(message);
                //richEmbed.setFooter("Footer", "https://musare.com/favicon-194x194.png");
                //richEmbed.setImage("https://musare.com/favicon-194x194.png");
                //richEmbed.setThumbnail("https://musare.com/favicon-194x194.png");
                richEmbed.setTimestamp(new Date());
                richEmbed.setTitle("MUSARE ALERT");
                richEmbed.setURL(config.get("domain"));
                richEmbed.addField("Type:", type, true);
                richEmbed.addField("Critical:", (critical) ? 'True' : 'False', true);
                extraFields.forEach((extraField) => {
                    richEmbed.addField(extraField.name, extraField.value, extraField.inline);
                });


                channel.send(message, { embed: richEmbed })                     
                .then(message => logger.success("SEND_ADMIN_ALERT_MESSAGE", `Sent admin alert message: ${message}`))
                .catch(() => logger.error("SEND_ADMIN_ALERT_MESSAGE", "Couldn't send admin alert message"));
            } else {
                logger.error("SEND_ADMIN_ALERT_MESSAGE", "Couldn't send admin alert message, channel was not found.");
            }
        }
    },

	_lockdown: () => {
		lockdown = true;
	}
}