#region Copyright
// /************************************************************************
//    Copyright (c) 2017 Jamie Rees
//    File: TvSenderV2.cs
//    Created By: Jamie Rees
//   
//    Permission is hereby granted, free of charge, to any person obtaining
//    a copy of this software and associated documentation files (the
//    "Software"), to deal in the Software without restriction, including
//    without limitation the rights to use, copy, modify, merge, publish,
//    distribute, sublicense, and/or sell copies of the Software, and to
//    permit persons to whom the Software is furnished to do so, subject to
//    the following conditions:
//   
//    The above copyright notice and this permission notice shall be
//    included in all copies or substantial portions of the Software.
//   
//    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
//    EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
//    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
//    NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
//    LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
//    OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
//    WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//  ************************************************************************/
#endregion

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using NLog;
using Ombi.Api.Interfaces;
using Ombi.Api.Models.SickRage;
using Ombi.Api.Models.Sonarr;
using Ombi.Core.SettingModels;
using Ombi.Helpers;
using Ombi.Store;

namespace Ombi.Core.Tv
{
    public class TvSenderV2
    {
        public TvSenderV2(ISonarrApi sonarrApi, ISickRageApi srApi, ICacheProvider cache)
        {
            SonarrApi = sonarrApi;
            SickrageApi = srApi;
            Cache = cache;
        }
        private ISonarrApi SonarrApi { get; }
        private ISickRageApi SickrageApi { get; }
        private ICacheProvider Cache { get; }
        private static Logger _log = LogManager.GetCurrentClassLogger();


        public async Task<SonarrAddSeries> SendToSonarr(SonarrSettings sonarrSettings, RequestedModel model)
        {
            return await SendToSonarr(sonarrSettings, model, string.Empty);
        }


        public async Task<SonarrAddSeries> SendToSonarr(SonarrSettings sonarrSettings, RequestedModel model,
            string qualityId)
        {
            var qualityProfile = 0;
            if (!string.IsNullOrEmpty(qualityId)) // try to parse the passed in quality, otherwise use the settings default quality
            {
                int.TryParse(qualityId, out qualityProfile);
            }

            if (qualityProfile <= 0)
            {
                int.TryParse(sonarrSettings.QualityProfile, out qualityProfile);
            }
            var rootFolderPath = model.RootFolderSelected <= 0 ? sonarrSettings.FullRootPath : await GetSonarrRootPath(model.RootFolderSelected, sonarrSettings);

            var episodeRequest = model.Episodes.Any();
            var requestAll = model.SeasonsRequested?.Equals("All", StringComparison.CurrentCultureIgnoreCase);
            var first = model.SeasonsRequested?.Equals("First", StringComparison.CurrentCultureIgnoreCase);
            var latest = model.SeasonsRequested?.Equals("Latest", StringComparison.CurrentCultureIgnoreCase);
            var specificSeasonRequest = model.SeasonList?.Any();

            if (episodeRequest)
            {
                return await ProcessSonarrEpisodeRequest(sonarrSettings, model, qualityProfile, rootFolderPath);
            }

            if (requestAll ?? false)
            {
                return await ProcessSonarrRequestSeason(sonarrSettings, model, qualityProfile, rootFolderPath);
            }

            if (first ?? false)
            {
                return await ProcessSonarrRequestSeason(sonarrSettings, model, qualityProfile, rootFolderPath);
            }

            if (latest ?? false)
            {
                return await ProcessSonarrRequestSeason(sonarrSettings, model, qualityProfile, rootFolderPath);
            }

            if (specificSeasonRequest ?? false)
            {
                return await ProcessSonarrRequestSeason(sonarrSettings, model, qualityProfile, rootFolderPath);
            }

            return null;
        }



        private async Task<SonarrAddSeries> ProcessSonarrRequestSeason(SonarrSettings sonarrSettings, RequestedModel model, int qualityId, string rootFolderPath)
        {
            // Does the series exist?
            var series = await GetSonarrSeries(sonarrSettings, model.ProviderId);
            if (series == null)
            {
                //WORKS
                // Add the series
                return AddSeries(sonarrSettings, model, rootFolderPath, qualityId);
            }

            // Also make sure the series is now monitored otherwise we won't search for it
            series.monitored = true;
            foreach (var seasons in series.seasons)
            {
                seasons.monitored = true;
            }

            // Send the update command
            series = SonarrApi.UpdateSeries(series, sonarrSettings.ApiKey, sonarrSettings.FullUri);
            SonarrApi.SearchForSeries(series.id, sonarrSettings.ApiKey, sonarrSettings.FullUri);
            return new SonarrAddSeries { title = series.title };
        }



        private async Task<SonarrAddSeries> ProcessSonarrEpisodeRequest(SonarrSettings sonarrSettings, RequestedModel model, int qualityId, string rootFolderPath)
        {
            // Does the series exist?

            var series = await GetSonarrSeries(sonarrSettings, model.ProviderId);
            if (series == null)
            {
                var seriesToAdd = new SonarrAddSeries
                {
                    seasonFolder = sonarrSettings.SeasonFolders,
                    title = model.Title,
                    qualityProfileId = qualityId,
                    tvdbId = model.ProviderId,
                    titleSlug = model.Title,
                    seasons = new List<Season>(),
                    rootFolderPath = rootFolderPath,
                    monitored = true, // Montior the series
                    images = new List<SonarrImage>(),
                    addOptions = new AddOptions
                    {
                        ignoreEpisodesWithFiles = true, // We don't really care about these
                        ignoreEpisodesWithoutFiles = true, // We do not want to grab random episodes missing
                        searchForMissingEpisodes = false // we want don't want to search for the missing episodes either
                    }
                };

                for (var i = 1; i <= model.SeasonCount; i++)
                {
                    var season = new Season
                    {
                        seasonNumber = i,
                        monitored = false // Do not monitor any seasons
                    };
                    seriesToAdd.seasons.Add(season);
                }

                // Add the series now
                var result = SonarrApi.AddSeries(seriesToAdd, sonarrSettings.ApiKey, sonarrSettings.FullUri);

                await RequestEpisodesForSonarr(model, result.id, sonarrSettings);

            }
            else
            {
                await RequestEpisodesForSonarr(model, series.id, sonarrSettings);
            }

            return new SonarrAddSeries() { title = model.Title };
        }

        public SonarrAddSeries AddSeries(SonarrSettings sonarrSettings, RequestedModel model, string rootFolderPath, int qualityId)
        {
            //WORKS
            // Add the series
            var seriesToAdd = new SonarrAddSeries
            {
                seasonFolder = sonarrSettings.SeasonFolders,
                title = model.Title,
                qualityProfileId = qualityId,
                tvdbId = model.ProviderId,
                titleSlug = model.Title,
                seasons = new List<Season>(),
                rootFolderPath = rootFolderPath,
                monitored = true, // Montior the series
                images = new List<SonarrImage>(),
                addOptions = new AddOptions
                {
                    ignoreEpisodesWithFiles = true, // We don't really care about these
                    ignoreEpisodesWithoutFiles = false, // We want to get the whole season
                    searchForMissingEpisodes = true // we want to search for missing
                }
            };

            for (var i = 1; i <= model.SeasonCount; i++)
            {
                var season = new Season
                {
                    seasonNumber = i,
                    // The model.SeasonList.Lenth is 0 when this is a "request all" 
                    monitored = model.SeasonList.Length == 0 || model.SeasonList.Any(x => x == i)
                };
                seriesToAdd.seasons.Add(season);
            }

            return SonarrApi.AddSeries(seriesToAdd, sonarrSettings.ApiKey, sonarrSettings.FullUri);
        }

        private async Task RequestEpisodesForSonarr(RequestedModel model, int showId, SonarrSettings sonarrSettings)
        {
            // Now lookup all episodes
            var ep = SonarrApi.GetEpisodes(showId.ToString(), sonarrSettings.ApiKey, sonarrSettings.FullUri);
            var episodes = ep?.ToList() ?? new List<SonarrEpisodes>();

            var internalEpisodeIds = new List<int>();
            var tasks = new List<Task>();
            foreach (var r in model.Episodes)
            {
                // Match the episode and season number.
                // If the episode is monitored we might not be searching for it.
                var episode =
                    episodes.FirstOrDefault(
                        x => x.episodeNumber == r.EpisodeNumber && x.seasonNumber == r.SeasonNumber);
                if (episode == null)
                {
                    continue;
                }
                var episodeInfo = SonarrApi.GetEpisode(episode.id.ToString(), sonarrSettings.ApiKey,
                    sonarrSettings.FullUri);
                episodeInfo.monitored = true; // Set the episode to monitored
                tasks.Add(Task.Run(() => SonarrApi.UpdateEpisode(episodeInfo, sonarrSettings.ApiKey,
                    sonarrSettings.FullUri)));
                internalEpisodeIds.Add(episode.id);
            }

            await Task.WhenAll(tasks.ToArray());

            SonarrApi.SearchForEpisodes(internalEpisodeIds.ToArray(), sonarrSettings.ApiKey, sonarrSettings.FullUri);
        }

        public SickRageTvAdd SendToSickRage(SickRageSettings sickRageSettings, RequestedModel model)
        {
            return SendToSickRage(sickRageSettings, model, sickRageSettings.QualityProfile);
        }

        public SickRageTvAdd SendToSickRage(SickRageSettings sickRageSettings, RequestedModel model, string qualityId)
        {
            _log.Info("Sending to SickRage {0}", model.Title);
            if (sickRageSettings.Qualities.All(x => x.Key != qualityId))
            {
                qualityId = sickRageSettings.QualityProfile;
            }

            var apiResult = SickrageApi.AddSeries(model.ProviderId, model.SeasonCount, model.SeasonList, qualityId,
                               sickRageSettings.ApiKey, sickRageSettings.FullUri);

            var result = apiResult.Result;


            return result;
        }

        private async Task<Series> GetSonarrSeries(SonarrSettings sonarrSettings, int showId)
        {
            var task = await Task.Run(() => SonarrApi.GetSeries(sonarrSettings.ApiKey, sonarrSettings.FullUri)).ConfigureAwait(false);
            var selectedSeries = task.FirstOrDefault(series => series.tvdbId == showId);

            return selectedSeries;
        }

        private async Task<string> GetSonarrRootPath(int pathId, SonarrSettings sonarrSettings)
        {
            var rootFoldersResult = await Cache.GetOrSetAsync(CacheKeys.SonarrRootFolders, async () =>
            {
                return await Task.Run(() => SonarrApi.GetRootFolders(sonarrSettings.ApiKey, sonarrSettings.FullUri));
            });

            foreach (var r in rootFoldersResult.Where(r => r.id == pathId))
            {
                return r.path;
            }
            return string.Empty;
        }
    }
}