using System;
using System.Net;
using System.Net.Http;
using System.Net.Http.Headers;
using System.Text;
using ln.json;
using ln.logging;

namespace ln.build
{

    public class JsonApiClient : IDisposable
    {
        public string BaseURL { get; }

        public HttpClient HttpClient { get; }

        public JsonApiClient(string baseUrl)
        {
            HttpClient = new HttpClient();
            BaseURL = baseUrl;
        }

        public  HttpStatusCode GetJson(out JSONValue response,params string[] path)
        {
            HttpResponseMessage httpResponse = HttpClient.GetAsync(string.Format("{0}/{1}",BaseURL, string.Join('/', path))).Result;
            if (httpResponse.StatusCode == System.Net.HttpStatusCode.OK)
            {
                response = JSONParser.Parse(httpResponse.Content.ReadAsStringAsync().Result);
            } else {
                response = null;
            }
            return httpResponse.StatusCode;
        }
        public  HttpStatusCode PostJson(JSONValue content, out JSONValue response,params string[] path)
        {
            StringContent jsonContent = new StringContent(content.ToString(),Encoding.UTF8, "application/json");
            HttpResponseMessage httpResponse = HttpClient.PostAsync(string.Format("{0}/{1}",BaseURL, string.Join('/', path)),jsonContent).Result;
            if (httpResponse.StatusCode == System.Net.HttpStatusCode.Created)
            {
                response = JSONParser.Parse(httpResponse.Content.ReadAsStringAsync().Result);
            } else {
                response = null;
                Logging.Log(LogLevel.DEBUG, "failed URL: {0}", httpResponse.RequestMessage.RequestUri);
                Logging.Log(LogLevel.DEBUG, "httpResponse; {0}", httpResponse);
            }
            return httpResponse.StatusCode;
        }

        public  HttpStatusCode PostContent(HttpContent content, out JSONValue response,params string[] path)
        {
            HttpResponseMessage httpResponse = HttpClient.PostAsync(string.Format("{0}/{1}",BaseURL, string.Join('/', path)),content).Result;
            if (httpResponse.StatusCode == System.Net.HttpStatusCode.Created)
            {
                response = JSONParser.Parse(httpResponse.Content.ReadAsStringAsync().Result);
            } else {
                response = null;
                Logging.Log(LogLevel.DEBUG, "failed URL: {0}", httpResponse.RequestMessage.RequestUri);
                Logging.Log(LogLevel.DEBUG, "httpResponse; {0}", httpResponse);
            }
            return httpResponse.StatusCode;
        }

        public HttpStatusCode Delete(params string[] path) => HttpClient.DeleteAsync(string.Format("{0}/{1}",BaseURL, string.Join('/', path))).Result.StatusCode;

        public void Dispose()
        {
            HttpClient?.Dispose();
        }

        static JsonApiClient(){
            System.Net.ServicePointManager.Expect100Continue = false;
        }
    }

}