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

var baseUrl = (Environment.GetEnvironmentVariable("PUBLIC_API_BASE_URL") ?? "https://api.compudime.com").TrimEnd('/');
var apiKey = Environment.GetEnvironmentVariable("PUBLIC_API_KEY");
if (string.IsNullOrWhiteSpace(apiKey))
{
    throw new InvalidOperationException("Set PUBLIC_API_KEY to <PUBLIC_API_KEY> before running this example.");
}

using var http = new HttpClient();
http.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", apiKey);
http.DefaultRequestHeaders.Add("X-Request-Id", "csharp-products-001");

var fields = Uri.EscapeDataString("productCode,description,price");
using var response = await http.GetAsync($"{baseUrl}/v1/products?fields={fields}&limit=50");
var body = await response.Content.ReadAsStringAsync();

if (!response.IsSuccessStatusCode)
{
    using var problemJson = JsonDocument.Parse(body);
    var root = problemJson.RootElement;
    throw new InvalidOperationException($"Public API problem JSON {root.GetProperty("code").GetString()} ({root.GetProperty("requestId").GetString()}): {root.GetProperty("detail").GetString()}");
}

using var productsJson = JsonDocument.Parse(body);
foreach (var product in productsJson.RootElement.GetProperty("products").EnumerateArray())
{
    Console.WriteLine($"{product.GetProperty("productCode").GetString()} {product.GetProperty("description").GetString()} {product.GetProperty("price").GetString()}");
}

if (productsJson.RootElement.TryGetProperty("nextCursor", out var nextCursor))
{
    Console.WriteLine($"Use nextCursor to request the next page: {nextCursor.GetString()}");
}