const fetch = require('node-fetch');
var fs = require('fs');



fs.readFile('coin_name.txt', 'utf8', function(err,data){
    arr = data.split(",");
   // console.log(arr);
    var responseList = new Array();
    for(j=0;j<2;j++){
        for(i=j*10;i<(j+1)*10;i++){
            (function(i){
                setTimeout(function(){
                const url = 'https://api.upbit.com/v1/candles/minutes/1?market='+arr[i]+'&count=1';
                const options = {method: 'GET', headers: {Accept: 'application/json'}};
                var coinJson = new Object();
                fetch(url, options)
                .then(res => res.json())
                .then(json => {
                    coinJson.coin = arr[i];
                    coinJson.price = json[0].trade_price;
                    responseList.push(coinJson);
                   // console.log(responseList)
                    console.log(i)
                })
                .catch(err => console.error('error:' + err));
                },i*10);
            })(i);
        }
    }
    
     
})