using System;
using System.Net.Http;
using System.Text.Json;

// Read the list of covered funds (one GET, no key), naming your own project
using var http = new HttpClient();
http.DefaultRequestHeaders.UserAgent.ParseAdd(
    "MyProject/1.0 (+https://example.com)");
using var doc = JsonDocument.Parse(await http.GetStringAsync(
    "https://tickerinside.com/api/v1/funds.json"));
var list = doc.RootElement;

// funds: read from their issuers' own files, with the date of the data
Console.WriteLine($"{list.GetProperty("count").GetInt32()} funds from issuer "
    + $"files, as_of {list.GetProperty("as_of").GetString()}");
// sec_funds: more US stock ETFs, from SEC filings, t and n as in funds
Console.WriteLine($"{list.GetProperty("sec_count").GetInt32()} more from SEC "
    + "filings, listed in sec_funds");

// One entry per fund: t is the ticker, n the name
foreach (var f in list.GetProperty("funds").EnumerateArray())
{
    Console.WriteLine(
        $"{f.GetProperty("t").GetString()} {f.GetProperty("n").GetString()}");
}