using System;
using System.Net.Http;
using System.Threading.Tasks;
using System.Collections.Generic;

namespace sharp.jsonrpc
{
	public class RPCConnector
	{
		private readonly HttpClient http;
		
		public RPCConnector(string hostname,int port)
		{
			this.http = new HttpClient();
			this.Hostname = hostname;
			this.Port = port;
		}

		public String Hostname { get; private set; }
		public int Port { get; private set; }		
		public string URL { get { return String.Format("http://{0}:{1}/json_rpc",Hostname,Port); } }


		public RPCCall Call(){
			return new RPCCall(this);
		}

		public Response Call(string method)
		{
			return Call(method, null);
		}
		public Response Call(string method,Dictionary<String,object> args){
			try
			{
				string request = sharp.jsonrpc.Request.Create(method,args);
				//Console.WriteLine("json-call: {0}",request);

				Task<HttpResponseMessage> response = http.PostAsync(URL, new StringContent(request));
				response.Wait();
				Task<string> result = response.Result.Content.ReadAsStringAsync();
				result.Wait();

				return new Response(result.Result);
			}
			catch (HttpRequestException e)
			{
				Response resp = new Response(String.Format("{  \"id\": \"0\", \"sharp.jsonrpc\": \"2.0\", \"result\": { status: \"Error\", message: \"HttpException: {0}\"}", e.ToString()));
				return resp;
			}
		}
		
	}
}