using System;
using System.Collections.Generic;
using System.Collections.Specialized;
using System.Diagnostics.CodeAnalysis;
using System.Threading.Tasks;
using Jackett.Common.Models;
using Jackett.Common.Models.IndexerConfig;
using Jackett.Common.Services.Interfaces;
using Jackett.Common.Utils;
using Jackett.Common.Utils.Clients;
using Newtonsoft.Json.Linq;
using NLog;

namespace Jackett.Common.Indexers.Abstract
{
    [ExcludeFromCodeCoverage]
    public abstract class CouchPotatoTracker : BaseWebIndexer
    {
        protected string endpoint;
        protected string APIUrl => SiteLink + endpoint;

        private new ConfigurationDataUserPasskey configData
        {
            get => (ConfigurationDataUserPasskey)base.configData;
            set => base.configData = value;
        }

        protected CouchPotatoTracker(string link, string id, string name, string description,
                                     IIndexerConfigurationService configService, WebClient client, Logger logger,
                                     IProtectionService p, TorznabCapabilities caps, ConfigurationData configData,
                                     string endpoint)
            : base(id: id,
                   name: name,
                   description: description,
                   link: link,
                   caps: caps,
                   configService: configService,
                   client: client,
                   logger: logger,
                   p: p,
                   configData: configData)
        {
            this.endpoint = endpoint;
        }

        public override async Task<IndexerConfigurationStatus> ApplyConfiguration(JToken configJson)
        {
            LoadValuesFromJson(configJson);
            IsConfigured = true;
            SaveConfig();
            return await Task.FromResult(IndexerConfigurationStatus.RequiresTesting);
        }

        // can be overriden to alter the search string
        protected virtual string GetSearchString(TorznabQuery query) => query.GetQueryString();

        protected override async Task<IEnumerable<ReleaseInfo>> PerformQuery(TorznabQuery query)
        {
            var releases = new List<ReleaseInfo>();
            var searchString = GetSearchString(query);

            var searchUrl = APIUrl;
            var queryCollection = new NameValueCollection();

            if (!string.IsNullOrEmpty(query.ImdbID))
            {
                queryCollection.Add("imdbid", query.ImdbID);
            }
            if (searchString != null)
            {
                queryCollection.Add("search", searchString);
            }
            queryCollection.Add("passkey", configData.Passkey.Value);
            queryCollection.Add("user", configData.Username.Value);

            searchUrl += "?" + queryCollection.GetQueryString();

            var response = await RequestWithCookiesAndRetryAsync(searchUrl);

            JObject json = null;
            try
            {
                json = JObject.Parse(response.ContentString);
            }
            catch (Exception ex)
            {
                throw new Exception("Error while parsing json: " + response.ContentString, ex);
            }
            var error = (string)json["error"];
            if (error != null)
                throw new Exception(error);

            if ((int)json["total_results"] == 0)
                return releases;

            try
            {
                foreach (JObject r in json["results"])
                {
                    var release = new ReleaseInfo
                    {
                        Title = (string)r["release_name"],
                        Details = new Uri((string)r["details_url"]),
                        Link = new Uri((string)r["download_url"])
                    };
                    release.Guid = release.Link;
                    release.Imdb = ParseUtil.GetImdbID((string)r["imdb_id"]);
                    var freeleech = (bool)r["freeleech"];
                    if (freeleech)
                        release.DownloadVolumeFactor = 0;
                    else
                        release.DownloadVolumeFactor = 1;
                    release.UploadVolumeFactor = 1;
                    var type = (string)r["type"];
                    release.Category = MapTrackerCatToNewznab(type);
                    release.Size = (long?)r["size"] * 1024 * 1024;
                    release.Seeders = (int?)r["seeders"];
                    release.Peers = release.Seeders + (int?)r["leechers"];
                    release.PublishDate = DateTimeUtil.FromUnknown((string)r["publish_date"]);
                    releases.Add(release);
                }
            }
            catch (Exception ex)
            {
                OnParseError(response.ContentString, ex);
            }

            return releases;
        }
    }
}