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

namespace SmartCharging.Net
{
    class Net
    {
        private static Net instance;

        private Net()
        {

        }

        public static Net Instance
        {
            get
            {
                if (instance == null)
                {
                    instance = new Net();
                }
                return instance;
            }
        }

        public async Task<string> GetRequest(Uri url, Dictionary<string, string> parameters)
        {

            if ( !parameters.Equals(null))
            {
                FormUrlEncodedContent ps = new FormUrlEncodedContent(parameters);
                string query = ps.ReadAsStringAsync().Result;
                url = new Uri(url.ToString() + "?" + query);
            }
            string result = "";
            using (var httpClient = new HttpClient())
            {
                HttpResponseMessage response = await httpClient.GetAsync(url);
                result = await response.Content.ReadAsStringAsync();
            }


            return result;

        }

        public async Task<string> PostRequest(Uri url, Dictionary<string,string> parameters)
        {
            string result = "";
            using (var httpClient = new HttpClient())
            {
                HttpContent content = new FormUrlEncodedContent(parameters);
                HttpResponseMessage response = await httpClient.PostAsync(url, content);
                result = await response.Content.ReadAsStringAsync();
            }

            return result;

        }

        public async Task<string> PostRequest(Uri url, string rawRequestContent)
        {
            string result = "";
            using (var httpClient = new HttpClient())
            {
                HttpContent content = new StringContent(rawRequestContent);
                HttpResponseMessage response = await httpClient.PostAsync(url, content);
                result = await response.Content.ReadAsStringAsync();
            }

            return result;

        }


        public async Task<string> PostRequest(Uri url, byte[] byteData, Dictionary<string,string> parameters, string type)
        {
            string result = "";
            using (var httpClient = new HttpClient())
            {
                MultipartFormDataContent form = new MultipartFormDataContent();
                HttpContent content = new ByteArrayContent(byteData);
                content.Headers.ContentType = MediaTypeHeaderValue.Parse(type);
                
                List<KeyValuePair<string, string>> pairs = parameters.ToList<KeyValuePair<string, string>>();
                KeyValuePair<string, string> pair = pairs[0];

                form.Add(content, pair.Key, pair.Value);
                pairs.Remove(pairs[0]);


                for (int i = 0; i < pairs.Count; i++)
                {
                    
                    HttpContent formContent = new StringContent(pairs[i].Value);
                    form.Add(formContent,pairs[i].Key);
                }
                
                
                

                HttpResponseMessage response = await httpClient.PostAsync(url, form);
                result = await response.Content.ReadAsStringAsync();
            }

            return result;

        }






    }
}