const fetch = require('node-fetch');

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

//Apparently hit ratelimits pretty damn quick and doesn't expire often.
class LookupCommand extends Command {

    constructor(client) {

        super(client, {
            name: 'lookup',
            module: 'utility',
            usage: "<invite-code>",
            showUsage: true,
            parameterType: 'PLAIN',
            examples: [
                "SvJgtEj",
                "discord.gg/SvJgtEj"
            ],
            restricted: true, //For now
            throttling: {
                usages: 1,
                duration: 30
            }
        });

        this.client = client;


    }

    async execute(message, { params }) {

        const regex = /discord(?:app\.com\/invite|\.gg(?:\/invite)?)\/([\w-]{2,255})/i;
        const match = regex.exec(params);

        let code = null;
        if(match && match[1]) {
            code = match[1];
        } else {
            const restrict = /([\w-]{2,255})/i.exec(params);
            if(restrict && restrict[1]) {
                code = restrict[1];
            } else {
                await message.respond(message.format('C_LOOKUP_FAILEDMATCH'));
                return undefined;
            }
        }

        let data = null;
        try {
            const request = await fetch(`https://discord.com/api/invite/${code}`);
            data = await request.json();
            if(data.code && data.message) {
                await message.respond(message.format('C_LOOKUP_NONEXISTANT'));
                return undefined;
            }
        } catch(error) {
            await message.respond(message.format('C_LOOKUP_NONEXISTANT'));
            return undefined;
        }

        let fields = [];

        if(data.inviter) {
            fields.push({
                name: "Inviter",
                value:  `${data.inviter.username}#${data.inviter.discriminator} \`(${data.inviter.id})\``,
                inline: true
            });
        }

        if(data.channel) {
            fields.push({
                name: "Default Channel",
                value: `#${data.channel.name} \`(${data.channel.id})\``,
                inline: true
            });
        }

        if(data.guild.features.length > 0) {
            fields.push({
                name: "Features",
                value: data.guild.features.map(f=>`\`${f}\``).join(', '),
                inline: true,
            });
        }

        const embed = {
            author: {
                name: `${data.guild.name} (${data.guild.id})`,
                icon_url: `https://cdn.discordapp.com/icons/${data.guild.id}/${data.guild.icon}.webp`
            },
            thumbnail: {
                url: data.guild.splash ? `https://cdn.discordapp.com/splashes/${data.guild.id}/${data.guild.splash}.webp` : null
            },
            description: data.guild.description || null,
            fields,
            footer: {
                text: `https://discord.gg/${data.code}`
            }
        };

        return message.embed(embed);

    }

}

module.exports = LookupCommand;