using Newtonsoft.Json;
using System;
using System.Collections.Generic;
using System.Net;
using System.Net.Http;
using System.Text;
using System.Threading.Tasks;

namespace CPMeta
{
    public class RestAPI
    {
        private static HttpClient RequestClient = new HttpClient();
        private static HttpClient ResponseClient = new HttpClient();

        static RestAPI()
        {
            ServicePointManager.ServerCertificateValidationCallback += (sender, cert, chain, sslPolicyErrors) => true;
            ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12;
            RequestClient.Timeout = TimeSpan.FromMilliseconds(3000);
            ResponseClient.Timeout = TimeSpan.FromMilliseconds(3000);
        }

        public static async Task<RESPONSE> PostAsync<REQUEST,RESPONSE>(string Url, REQUEST body) where REQUEST : class where RESPONSE : class
        {
            try
            {
                if (body != null)
                {
                    var jsonBody = JsonConvert.SerializeObject(body);
                    var contents = new StringContent(jsonBody, Encoding.UTF8, "application/json");                  

                    var response = await RequestClient.PostAsync(Url, contents);

                    var resContentStr = await response.Content.ReadAsStringAsync();
                    return JsonConvert.DeserializeObject<RESPONSE>(resContentStr);
                }
            }           
            catch (Exception e)
            {
                Console.WriteLine("PostAsync Error");
                Console.WriteLine(e.Message);
            }

            return default(RESPONSE);
        }

        public static async Task<RESPONSE> GetAsync<RESPONSE>(string Url)
        {
            try
            {
                var response = await ResponseClient.GetAsync(Url);

                var resContentStr = await response.Content.ReadAsStringAsync();
                return JsonConvert.DeserializeObject<RESPONSE>(resContentStr);
                
            }
            catch(Exception e)
            {
                Console.WriteLine("GetAsync Error");
                Console.WriteLine(e.Message);
            }

            return default(RESPONSE);
        }

    }
}