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

namespace PCUT.API
{
    public static class ApiClient<T>
    {
        private static HttpClient httpClient { get;set; }
        private static string baseApiUrl { get; set; }

        public static void Initial(string baseURL)
        {
            if (httpClient != null) return;
            httpClient = new HttpClient();
            baseApiUrl = baseURL;
            httpClient.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
        }

        public static void SetAuthToken(string token)
        {
            httpClient.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", token);

        }

        public static async Task<List<T>> GetAllAsync(string path)
        {
            HttpResponseMessage response = await httpClient.GetAsync($"{baseApiUrl}/{path}");
            response.EnsureSuccessStatusCode();
            string content = await response.Content.ReadAsStringAsync();
            return JsonConvert.DeserializeObject<List<T>>(content);
        }

        public static async Task<T> GetByIdAsync(string path, int id)
        {
            HttpResponseMessage response = await httpClient.GetAsync($"{baseApiUrl}/{path}/{id}");
            response.EnsureSuccessStatusCode();
            string content = await response.Content.ReadAsStringAsync();
            return JsonConvert.DeserializeObject<T>(content);
        }

        public static async Task<T> CreateAsync(string path, T entity)
        {
            string json = JsonConvert.SerializeObject(entity);
            StringContent content = new StringContent(json, Encoding.UTF8, "application/json");

            HttpResponseMessage response = await httpClient.PostAsync($"{baseApiUrl}/{path}", content);
            response.EnsureSuccessStatusCode();

            string responseContent = await response.Content.ReadAsStringAsync();
            return JsonConvert.DeserializeObject<T>(responseContent);
        }

        public static async Task<T> UpdateAsync(string path, int id, T entity)
        {
            string json = JsonConvert.SerializeObject(entity);
            StringContent content = new StringContent(json, Encoding.UTF8, "application/json");

            HttpResponseMessage response = await httpClient.PutAsync($"{baseApiUrl}/{path}/{id}", content);
            response.EnsureSuccessStatusCode();

            string responseContent = await response.Content.ReadAsStringAsync();
            return JsonConvert.DeserializeObject<T>(responseContent);
        }

        public static async Task<bool> DeleteAsync(string path, int id)
        {
            HttpResponseMessage response = await httpClient.DeleteAsync($"{baseApiUrl}/{path}/{id}");
            response.EnsureSuccessStatusCode();
            return response.IsSuccessStatusCode;
        }
    }

}