importing BTC historical data into spreadsheet - json

Question

I'm trying to import a column with all the closing BTC price into a Google sheet. (within a specific set of dates)
I already have this script that allows importJSON:
/**
* Imports JSON data to your spreadsheet Ex: IMPORTJSON("http://myapisite.com","city/population")
* #param url URL of your JSON data as string
* #param xpath simplified xpath as string
* #customfunction
*/
function IMPORTJSON(url,xpath){
try{
// /rates/EUR
var res = UrlFetchApp.fetch(url);
var content = res.getContentText();
var json = JSON.parse(content);
var patharray = xpath.split(".");
//Logger.log(patharray);
for(var i=0;i<patharray.length;i++){
json = json[patharray[i]];
}
//Logger.log(typeof(json));
if(typeof(json) === "undefined"){
return "Node Not Available";
} else if(typeof(json) === "object"){
var tempArr = [];
for(var obj in json){
tempArr.push([obj,json[obj]]);
}
return tempArr;
} else if(typeof(json) !== "object") {
return json;
}
}
catch(err){
return "Error getting data";
}
}
in which I am able to get for i.e. the last price with this JSON call:
=importJSON("https://api.coingecko.com/api/v3/coins/marketsvs_currency=eur&ids=bitcoin","0.current_price")
anyways I'm not able to make a correct JSON call or something similar to import a column with the btc closing price from a whatever date to current date.
I have installed a spreadsheet extension called cryptosheet and tried to use the SS() function but nothing works so far.

Answer 1

From your replying and your question, I could understand like below.
You want to retrieve the values of current_price using your script.
The URL is https://api.coingecko.com/api/v3/coins/bitcoin/history?date=30-12-2017&localization=false.
Modification points:
From your replying, it seems that the xpath is not used. By this, I think that the error occurs.
When I saw the data from the URL and your script, the formula might be as follows.
Modified formula:
=IMPORTJSON(A1, "market_data.current_price")
In this case, the URL of https://api.coingecko.com/api/v3/coins/bitcoin/history?date=30-12-2017&localization=false is put to the cell "A1".
Result: