//
// Twitch.ts
//
// Written by: Tyler Akins (2020/01/06)
//


import * as requests from "request-promise-native";
import * as tmi from "tmi.js";

import { TWITCH_URI } from "./constants";
import * as config from "./config";
import {
    GET_FORMATTED_DATE,
    WRITE_DATA,
    LOAD_DATA
} from "./utils";


const IS_LIVE = async (channel_name: string): Promise<boolean> => {

    // Fetch the data from the Twitch API to check if the user is live
    let response = await requests.get(
        TWITCH_URI,
        {
            qs: { user_login: channel_name},
            headers: {
                "Client-ID": config.CLIENT_ID
            },
            json: true
        }
    );
    console.log(response)
    return response.data.length !== 0;
};



export const START_BOT = async () => {

    const client = tmi.Client({
        options: {
            debug: false,
            clientId: config.CLIENT_ID
        },
        connection: {
            secure: true,
            reconnect: true
        },
        identity: {
            username: config.USERNAME,
            password: config.OAUTH_TOKEN
        },
        channels: [config.CHANNEL]
    });

    client.on("cheer", (channel: string, ctx: tmi.Userstate, message: string) => {

        let bits: number = parseInt(ctx.bits);
        let donator: string = ctx.username;
        let date: string = GET_FORMATTED_DATE()

        let data: data = LOAD_DATA();


        // Ensure the channel is live when the bits are donated
        if (!IS_LIVE(channel)) { return; };


        // Data already exists
        if (data[date]) {

            // Check if the donator has already donated
            if (!data[date].donators.includes(donator)) {
                data[date].donators.push(donator);
            };

            // Add the bits to the total and the array of donations
            data[date].total_bits += bits;
            data[date].donations.push(bits);
        }

        // Making new data point
        else {
            data[date] = {
                total_bits: bits,
                donators: [donator],
                donations: [bits]
            };
        };

        WRITE_DATA(data);
    });
};