const Client = require('./index');

const LISTEN_ON = '5fc829314e96e00725c17fd8';
const TOKEN = 'eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJ1c2VybmFtZSI6InVzZXIiLCJpYXQiOjE2MDcxOTE5NjAsImV4cCI6MTYwNzIwMjc2MH0.dfI6CMeDNck-ubqwEmiMFdHbRR4iiuooeTuzgVc_8rY';
const PREFIX = '::';
const ADMIN_ID = '5fc828ea4e96e00725c17fd7';

const joined = [];
const selected = [];

const getRandomUser = (self, count=0) => {
    if (count > 3) return joined[0];
    count++;

    let final;

    let chosen = joined[Math.floor(Math.random() * joined.length)];
    final = chosen;
    if (chosen._id === self._id) final = getRandomUser(self, count);
    if ((selected.indexOf(chosen)) !== 1) final = getRandomUser(self, count);
    if (!final) final = getRandomUser(self, count);

    

    return final || null;
};

const main = async () => {
    const client = new Client('http://localhost:3000', {
        throwErrors: true
    });
    await client.setToken(TOKEN);
    await client.gatewayConnect();
    
    client.gateway.on('connect', () => {
        const category = client.gateway.subscribeToCategoryChat(LISTEN_ON);

        client.gateway.on('message', (e) => {
            if (e.author._id === client.user._id) return;
            if (!e.content.startsWith(PREFIX)) return;
            if (e.category._id !== category) return;

            const cmdString = e.content.substring(PREFIX.length);
            const cmdFull = cmdString.split(' ');
            const cmd = cmdFull[0] || 'NO_CMD';

            console.log(cmdFull);

            switch (cmd) {
                case 'join': {
                    const existing = joined.findIndex((o) => {
                        return o._id === e.author._id;
                    });

                    if (existing !== -1) {
                        client.gateway.sendMessage(category, 'Already joined', {
                            nickAuthor: { username: 'Error' },
                            destUser: { _id: e.author._id }
                        });
                        break;
                    }

                    joined.push(e.author);
                    console.log(`[*] User joined`, e.author);
                    client.gateway.sendMessage(category, `${e.author.username} joined!`, {
                        nickAuthor: { username: 'New join!' }
                    });
                    break;
                }
                case 'roll': {
                    if (e.author._id !== ADMIN_ID) {
                        client.gateway.sendMessage(category, 'Access denied', {
                            nickAuthor: { username: 'Error' },
                            destUser: { _id: e.author._id }
                        });
                        break;
                    }
                    client.gateway.sendMessage(category, 'Rolling...', {
                        nickAuthor: { username: 'Woo' }
                    });

                    joined.forEach((e) => {
                        const chosen = getRandomUser(e);

                        selected.push(chosen);

                        client.gateway.sendMessage(category, `${e.username} - ${chosen.username}`, {
                            nickAuthor: { username: 'Your result' },
                            destUser: { _id: e._id }
                        });
                    });
                    break;
                }
            }
        });
    });
};

main();