// You need node: https://nodejs.org/en/
// Download: https://github.com/nocaremc/nodex-ws
// Replace app.js contents with this paste
// In the same directory as app.js: npm install
// to run: npm start
/* Example output:
 USD:BTS - 0.20012536757755442
 CNY:BTS - 1.282795829167645
 BTS:target - 19.41670234815228
 USD:target - 3.8857746945679392
 CNY:target - 24.907664788399362
*/
const log = require('./src/Log.js')
const API = require('./src/API.js')

let api = new API('wss://la.dexnode.net/ws', {perMessageDeflate: false})

api.on("open", () => {
    api.database(database => {
        // api.database_api.lookup_asset_symbols(JSON.stringify(['EUR']), result => {
        //     log.warn(result)
        // })
        let usd = {id: '1.3.121'}
        let cny = {id: '1.3.113'}
        let bts = {id: '1.3.0'}
        let target = {id: '1.3.120'} // bitEUR
        let bts_target = {latest: undefined}
        let usd_bts = {latest: undefined}
        let cny_bts = {latest: undefined}
        // Get ticker for bts:target
        api.database_api.get_ticker(bts.id, target.id, result => {
            // Calculate an average from latest and bids/asks
            bts_target.latest = sum(result)
            bts_target.average_latest = bts_target.latest / 3

            api.database_api.get_ticker(usd.id, bts.id, result => {
                // Calculate an average from latest and bids/asks
                usd_bts.latest = sum(result)
                usd_bts.average_latest = usd_bts.latest / 3

                api.database_api.get_ticker(cny.id, bts.id, result => {

                    cny_bts.latest = sum(result)
                    cny_bts.average_latest = cny_bts.latest / 3
                    log.error("USD:BTS - " + usd_bts.average_latest)
                    log.error("CNY:BTS - " + cny_bts.average_latest)
                    log.error("BTS:target - " + bts_target.average_latest)
                    log.error("USD:target - " + usd_bts.average_latest * bts_target.average_latest)
                    log.error("CNY:target - " + cny_bts.average_latest * bts_target.average_latest)
                    //api.close()
                })
            })
        })
    })
})

function sum(result) {
    return [
        result.latest, result.lowest_ask, result.highest_bid
    ].reduce((price, last) => {
        return parseFloat(last) + parseFloat(price)
    })
}