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

namespace ScoreTracker.API
{
    internal class Request
    {
        internal static readonly HttpClient HttpClient = new HttpClient();

        /// <summary>
        /// Persist the given headers for all future requests
        /// </summary>
        /// <param name="headers">the headers to persist</param>
        public static void PersistHeaders(Dictionary<string, string> headers)
        {
            HttpClient.DefaultRequestHeaders.Clear(); // Clear existing headers
            foreach (var header in headers)
            {
                HttpClient.DefaultRequestHeaders.Add(header.Key, header.Value);
            }
        }

        /// <summary>
        /// Create a POST request to the given URL with the given data
        /// </summary>
        /// <param name="url">the url to post to</param>
        /// <param name="data">the data to post</param>
        /// <param name="checkAuth">whether to check for authentication</param>
        /// <returns>the task</returns>
        public static async Task<HttpResponseMessage> PostJsonAsync(string url, Dictionary<object, object> json, bool checkAuth = true)
        {
            if (checkAuth)
            {
                var signinResponse = await Authentication.ValidateAndSignIn();
                if (!signinResponse.Success)
                {
                    throw new Exception($"Failed to log in: {signinResponse.Response}");
                }
            }
            var jsonString = JsonConvert.SerializeObject(json, Formatting.None);
            var content = new StringContent(jsonString, Encoding.UTF8, "application/json");

            // Send the POST request
            var response = await HttpClient.PostAsync(url, content);
            return response;
        }
    }
}