//Load Environment Variables
require('dotenv').config()

//IPFS
const IpfsClient = require('ipfs-http-client');
const OrbitDB = require('orbit-db');
//Instance of IPFS locally in IPFS daemon
const node = IpfsClient('http://localhost:5001');
const MongoClient = require('mongodb').MongoClient;
const url = "mongodb://"+process.env.USERDB+":"+process.env.PASSDB+"@localhost:27017/"+process.env.DBNAME;

//Module for get prices
var getEth = require('./getEth');

//ABI from contract DECA ERC20
const abi = require("./ABI.js");

//Web3 and IPC Provider
const Web3 = require('web3');
const web3 = new Web3(new Web3.providers.WebsocketProvider(process.env.INFURAKEY));

//DECA Contract instance 
const decaContract = new web3.eth.Contract(abi, '0xD60DC0805f44d10cAc6594f1a501c67929448957');

async function index() {
    //Open and load orbitdb databases
    const orbitdb = await OrbitDB.createInstance(node)
    const db = await orbitdb.docs('/orbitdb/zdpuAykPJ4qtBg2toS2vxr5eaPfGEBJmvGerM7V7x8qn5c8hW/decaCCDB', {
        indexBy: 'CCID'
    });
    await db.load();
    const db2 = await orbitdb.docs('decaPrices', {
        indexBy: 'dates'
    });
    await db2.load();
    const db3 = await orbitdb.docs('decaGeth', {
        indexBy: 'dates'
    });
    await db3.load();
    const db4 = await orbitdb.docs('decaCCTS', {
        indexBy: 'dates'
    });
    await db4.load();
    const dbm = await MongoClient.connect(url, { useUnifiedTopology: true }).catch(err => { console.log(err); });
    //Flag to save the following data
    let dates = 1593553845;
    while (true) {
        //Get Carbon Credits Data
        const data = db.get('');
        //Compare flag and unixtime to add data
        if (Math.round(new Date().getTime() / 1000) == dates) {
            var dbo = dbm.db("DECA");
            //Get data from functions
            let elemsGeth = await getGethElems(dates);
            let elemsDECAPrice = await getEth(dates);
            let ccTotalEth = await getEthSum(data, dates);
            //checks every 2 minutes to see if the data has already been inserted into the DBs if not
            setTimeout(async function () {
                const query1 = db2.query((doc) => doc.dates == dates);
                const query2 = db3.query((doc) => doc.dates == dates);
                const query3 = db4.query((doc) => doc.dates == dates);
                dbo.collection("decaPrice").insertOne(elemsDECAPrice, function(err, res) {
                    if (err) throw err;
                    console.log("Insert decaPrice")
                });
                dbo.collection("decaGeth").insertOne(elemsGeth, function(err, res) {
                    if (err) throw err;
                    console.log("Insert decaGeth")
                });
                dbo.collection("decaCCTS").insertOne(ccTotalEth, function(err, res) {
                    if (err) throw err;
                    console.log("Insert decaCCTS")
                });
                if (query1.length > 0) {
                    let elemsDECAPrice = await getEth(dates);
                    const hash1 = await db2.put(elemsDECAPrice);
                    console.log(hash1);
                }
                if (query2.length > 0) {
                    let elemsGeth = await getGethElems(dates);
                    
                    const hash2 = await db3.put(elemsGeth);
                    console.log(hash2);
                }
                if (query3.length > 0) {
                    let ccTotalEth = await getEthSum(data, dates);
                    
                    const hash3 = await db4.put(ccTotalEth);
                    console.log(hash3);
                }
            dates += 60;
            }, 10000);
        }
    }
}

index();

//Function to save data from web3 and contract (ret TotalSupply, Ethereum, Date)
const getGethElems = async (dates) => {
    let ret = {};
    var balanceEthereum = await web3.eth.getBalance('0xD60DC0805f44d10cAc6594f1a501c67929448957');
    var totalSupply = await decaContract.methods.totalSupply().call();
    totalSupply = web3.utils.fromWei(totalSupply, 'ether');
    balanceEthereum = web3.utils.fromWei(balanceEthereum, 'ether');
    ret.DTS = totalSupply;
    ret.ETS = balanceEthereum;
    ret.dates = dates;
    return ret;
}

//Function to save data from orbitDB CC (ret ccTotal, ccTS, dates)
const getEthSum = async (elemsCC, dates) => {
    const ret = {};
    let sum = 0;
    let sumCC = 0;
    for (let key in elemsCC) {
        sum += elemsCC[key]['conversionPrice']['ETH'];
    }
    for (let key in elemsCC) {
        sumCC += 1;
    }
    ret.ccTotal = sumCC;
    ret.ccTS = sum;
    ret.dates = dates;
    return ret;
}