using System.Net;
using System.Net.Http.Headers;
using System.Text;
using System.Text.Json;
using JellyGlass.Exceptions;
using JellyGlass.Models;
using JellyGlass.Models.JellyfinApi;

namespace JellyGlass.Repositories;

public class JellyfinApiClient
{
	private readonly string _apiKey = string.Empty;
	public readonly string InstanceUrl;
	private readonly HttpClient _client;

	public string ID { get; private set; } = string.Empty;
	public string ServerName { get; private set; } = string.Empty;

	public JellyfinApiClient(string instanceUrl, string apiToken)
	{
		InstanceUrl = instanceUrl;
		_client = new HttpClient();
		_client.DefaultRequestHeaders.Clear();
		_apiKey = apiToken;
	}

	public async Task<Item[]> GetInstanceLibraries()
	{
		var request = new HttpRequestMessage(HttpMethod.Get, $"{InstanceUrl}/Library/MediaFolders");
		var response = await MakeRequest(request);

		var apiResponse = await response.Content.ReadFromJsonAsync<ItemResponse>();

		return apiResponse!.Items.ToArray();
	}

	public async Task<Item[]> GetItemChildren(string itemId)
	{
		var request = new HttpRequestMessage(HttpMethod.Get, $"{InstanceUrl}/items?ParentId={itemId}");

		var response = await MakeRequest(request);

		var apiResponse = await response.Content.ReadFromJsonAsync<ItemResponse>();

		return apiResponse!.Items.ToArray();
	}

	public async Task<Item[]> GetItems(string searchTerm = "", string years = "", string itemTypes = "", string limit = "", string parentId = "")
	{
		var request = new HttpRequestMessage(HttpMethod.Get, $"{InstanceUrl}/items?searchTerm={searchTerm}&recursive=true&includeItemTypes=Series,Movie");

		var response = await MakeRequest(request);

		var apiResponse = await response.Content.ReadFromJsonAsync<ItemResponse>();

		return apiResponse!.Items.ToArray();
	}

	public async Task<ServerInfo> GetServerInfo()
	{
		var request = new HttpRequestMessage(HttpMethod.Get, $"{InstanceUrl}/System/Info");

		var response = await MakeRequest(request);

		var apiResponse = await response.Content.ReadFromJsonAsync<ServerInfo>();

		if (ID == string.Empty)
		{
			ID = apiResponse!.Id;
		}

		return apiResponse!;
	}

	public async Task<object> GetPublicServerInfo()
	{
		var request = new HttpRequestMessage(HttpMethod.Get, $"{InstanceUrl}/System/Info/Public");

		var response = await MakeRequest(request);

		var apiResponse = await response.Content.ReadFromJsonAsync<ServerInfo>();

		if (ID == string.Empty)
		{
			ID = apiResponse!.Id;
		}


		return apiResponse!;
	}

	// public async Task Authenticate()
	// {
	// 	var request = new HttpRequestMessage(HttpMethod.Post, $"{InstanceUrl}/Users/AuthenticateByName");

	// 	request.Headers.Authorization = new AuthenticationHeaderValue("MediaBrowser", GetAuthHeader());

	// 	var body = new
	// 	{
	// 		Username = _username,
	// 		Pw = _password
	// 	};

	// 	request.Content = new StringContent(JsonSerializer.Serialize(body), Encoding.UTF8, "application/json");

	// 	try
	// 	{
	// 		var response = await _client.SendAsync(request);

	// 		response.EnsureSuccessStatusCode();

	// 		var authResponse = await response.Content.ReadFromJsonAsync<AuthResponse>();

	// 		_apiKey = authResponse!.AccessToken;
	// 		ID = authResponse.ServerId;
	// 	}
	// 	catch (HttpRequestException e)
	// 	{
	// 		throw new JellyfinApiClientException(e.Message);
	// 	}
	// }

	private async Task<HttpResponseMessage> MakeRequest(HttpRequestMessage request)
	{
		request.Headers.Authorization = new AuthenticationHeaderValue("MediaBrowser", GetAuthHeader());

		HttpResponseMessage response;

		try
		{
			response = await _client.SendAsync(request);
			response.EnsureSuccessStatusCode();
		}
		catch (HttpRequestException e)
		{
			// if (e.StatusCode == HttpStatusCode.Unauthorized)
			// {
			// 	await Authenticate();

			// 	request.Headers.Authorization = new AuthenticationHeaderValue("MediaBrowser", GetAuthHeader());

			// 	response = await _client.SendAsync(request);
			// }
			// else
			// {
			// 	throw new JellyfinApiClientException(e.Message);
			// }
			throw new JellyfinApiClientException(e.Message);
		}

		return response;
	}

	private string GetAuthHeader()
	{
		var header = "Client=Test, Device=Test, DeviceId=Test, Version=1";

		if (_apiKey != String.Empty)
		{
			header += ", Token=" + _apiKey;
		}

		return header;
	}
}