fmt := import("fmt")
exch := import("exchange")
t := import("times")
cc := import("indicator/correlationcoefficient")

load := func() {
    start := t.date(2017, 8 , 17 , 0 , 0 , 0, 0)
    end := t.add_date(start, 0, 6 , 0)
    // 'ctx' is already defined when we construct our bytecode from file.
    // To add debugging information to the request, see verbose.gct. To add account credentials, see account.gct
    ohlcvDataBTC := exch.ohlcv(ctx, "binance", "BTC-USDT", "-", "SPOT", start, end, "1d")
    if is_error(ohlcvDataBTC) {
        // handle error 
        fmt.println(ohlcvDataBTC)
        return
    }
    ohlcvDataETH := exch.ohlcv(ctx, "binance", "ETH-USDT", "-", "SPOT", start, end, "1d")
    if is_error(ohlcvDataETH) {
        // handle error 
        fmt.println(ohlcvDataETH)
        return
    }
    ret := cc.calculate(ohlcvDataBTC.candles, ohlcvDataETH.candles, 20)
    fmt.println(ret)
}

load()