using System;
using System.Collections.Generic;
using System.Threading;
using System.Threading.Tasks;
using MediaBrowser.Controller.Dto;
using MediaBrowser.Controller.Entities;
using MediaBrowser.Controller.Library;
using MediaBrowser.Model.Dto;
using MediaBrowser.Model.Events;
using MediaBrowser.Model.LiveTv;
using MediaBrowser.Model.Querying;

namespace MediaBrowser.Controller.LiveTv
{
    /// <summary>
    /// Manages all live tv services installed on the server
    /// </summary>
    public interface ILiveTvManager
    {
        /// <summary>
        /// Gets the services.
        /// </summary>
        /// <value>The services.</value>
        IReadOnlyList<ILiveTvService> Services { get; }

        /// <summary>
        /// Gets the new timer defaults asynchronous.
        /// </summary>
        /// <param name="cancellationToken">The cancellation token.</param>
        /// <returns>Task{TimerInfo}.</returns>
        Task<SeriesTimerInfoDto> GetNewTimerDefaults(CancellationToken cancellationToken);

        /// <summary>
        /// Gets the new timer defaults.
        /// </summary>
        /// <param name="programId">The program identifier.</param>
        /// <param name="cancellationToken">The cancellation token.</param>
        /// <returns>Task{SeriesTimerInfoDto}.</returns>
        Task<SeriesTimerInfoDto> GetNewTimerDefaults(string programId, CancellationToken cancellationToken);

        /// <summary>
        /// Cancels the timer.
        /// </summary>
        /// <param name="id">The identifier.</param>
        /// <returns>Task.</returns>
        Task CancelTimer(string id);

        /// <summary>
        /// Cancels the series timer.
        /// </summary>
        /// <param name="id">The identifier.</param>
        /// <returns>Task.</returns>
        Task CancelSeriesTimer(string id);

        /// <summary>
        /// Adds the parts.
        /// </summary>
        /// <param name="services">The services.</param>
        /// <param name="tunerHosts">The tuner hosts.</param>
        /// <param name="listingProviders">The listing providers.</param>
        void AddParts(IEnumerable<ILiveTvService> services, IEnumerable<ITunerHost> tunerHosts, IEnumerable<IListingsProvider> listingProviders);

        /// <summary>
        /// Gets the timer.
        /// </summary>
        /// <param name="id">The identifier.</param>
        /// <param name="cancellationToken">The cancellation token.</param>
        /// <returns>Task{TimerInfoDto}.</returns>
        Task<TimerInfoDto> GetTimer(string id, CancellationToken cancellationToken);

        /// <summary>
        /// Gets the series timer.
        /// </summary>
        /// <param name="id">The identifier.</param>
        /// <param name="cancellationToken">The cancellation token.</param>
        /// <returns>Task{TimerInfoDto}.</returns>
        Task<SeriesTimerInfoDto> GetSeriesTimer(string id, CancellationToken cancellationToken);

        /// <summary>
        /// Gets the recordings.
        /// </summary>
        /// <param name="query">The query.</param>
        /// <param name="options">The options.</param>
        QueryResult<BaseItemDto> GetRecordings(RecordingQuery query, DtoOptions options);

        /// <summary>
        /// Gets the timers.
        /// </summary>
        /// <param name="query">The query.</param>
        /// <param name="cancellationToken">The cancellation token.</param>
        /// <returns>Task{QueryResult{TimerInfoDto}}.</returns>
        Task<QueryResult<TimerInfoDto>> GetTimers(TimerQuery query, CancellationToken cancellationToken);

        /// <summary>
        /// Gets the series timers.
        /// </summary>
        /// <param name="query">The query.</param>
        /// <param name="cancellationToken">The cancellation token.</param>
        /// <returns>Task{QueryResult{SeriesTimerInfoDto}}.</returns>
        Task<QueryResult<SeriesTimerInfoDto>> GetSeriesTimers(SeriesTimerQuery query, CancellationToken cancellationToken);

        /// <summary>
        /// Gets the channel stream.
        /// </summary>
        /// <param name="id">The identifier.</param>
        /// <param name="mediaSourceId">The media source identifier.</param>
        /// <param name="cancellationToken">The cancellation token.</param>
        /// <returns>Task{StreamResponseInfo}.</returns>
        Task<Tuple<MediaSourceInfo, ILiveStream>> GetChannelStream(string id, string mediaSourceId, List<ILiveStream> currentLiveStreams, CancellationToken cancellationToken);

        /// <summary>
        /// Gets the program.
        /// </summary>
        /// <param name="id">The identifier.</param>
        /// <param name="cancellationToken">The cancellation token.</param>
        /// <param name="user">The user.</param>
        /// <returns>Task{ProgramInfoDto}.</returns>
        Task<BaseItemDto> GetProgram(string id, CancellationToken cancellationToken, User user = null);

        /// <summary>
        /// Gets the programs.
        /// </summary>
        /// <param name="query">The query.</param>
        /// <param name="options">The options.</param>
        /// <param name="cancellationToken">The cancellation token.</param>
        /// <returns>IEnumerable{ProgramInfo}.</returns>
        Task<QueryResult<BaseItemDto>> GetPrograms(InternalItemsQuery query, DtoOptions options, CancellationToken cancellationToken);

        /// <summary>
        /// Updates the timer.
        /// </summary>
        /// <param name="timer">The timer.</param>
        /// <param name="cancellationToken">The cancellation token.</param>
        /// <returns>Task.</returns>
        Task UpdateTimer(TimerInfoDto timer, CancellationToken cancellationToken);

        /// <summary>
        /// Updates the timer.
        /// </summary>
        /// <param name="timer">The timer.</param>
        /// <param name="cancellationToken">The cancellation token.</param>
        /// <returns>Task.</returns>
        Task UpdateSeriesTimer(SeriesTimerInfoDto timer, CancellationToken cancellationToken);

        /// <summary>
        /// Creates the timer.
        /// </summary>
        /// <param name="timer">The timer.</param>
        /// <param name="cancellationToken">The cancellation token.</param>
        /// <returns>Task.</returns>
        Task CreateTimer(TimerInfoDto timer, CancellationToken cancellationToken);

        /// <summary>
        /// Creates the series timer.
        /// </summary>
        /// <param name="timer">The timer.</param>
        /// <param name="cancellationToken">The cancellation token.</param>
        /// <returns>Task.</returns>
        Task CreateSeriesTimer(SeriesTimerInfoDto timer, CancellationToken cancellationToken);

        /// <summary>
        /// Gets the guide information.
        /// </summary>
        /// <returns>GuideInfo.</returns>
        GuideInfo GetGuideInfo();

        /// <summary>
        /// Gets the recommended programs.
        /// </summary>
        /// <param name="query">The query.</param>
        /// <param name="options">The options.</param>
        /// <param name="cancellationToken">The cancellation token.</param>
        QueryResult<BaseItemDto> GetRecommendedPrograms(InternalItemsQuery query, DtoOptions options, CancellationToken cancellationToken);

        /// <summary>
        /// Gets the recommended programs internal.
        /// </summary>
        QueryResult<BaseItem> GetRecommendedProgramsInternal(InternalItemsQuery query, DtoOptions options, CancellationToken cancellationToken);

        /// <summary>
        /// Gets the live tv information.
        /// </summary>
        /// <param name="cancellationToken">The cancellation token.</param>
        /// <returns>Task{LiveTvInfo}.</returns>
        LiveTvInfo GetLiveTvInfo(CancellationToken cancellationToken);

        /// <summary>
        /// Resets the tuner.
        /// </summary>
        /// <param name="id">The identifier.</param>
        /// <param name="cancellationToken">The cancellation token.</param>
        /// <returns>Task.</returns>
        Task ResetTuner(string id, CancellationToken cancellationToken);

        /// <summary>
        /// Gets the live tv folder.
        /// </summary>
        /// <param name="cancellationToken">The cancellation token.</param>
        Folder GetInternalLiveTvFolder(CancellationToken cancellationToken);

        /// <summary>
        /// Gets the enabled users.
        /// </summary>
        /// <returns>IEnumerable{User}.</returns>
        IEnumerable<User> GetEnabledUsers();

        /// <summary>
        /// Gets the internal channels.
        /// </summary>
        QueryResult<BaseItem> GetInternalChannels(LiveTvChannelQuery query, DtoOptions dtoOptions, CancellationToken cancellationToken);

        /// <summary>
        /// Gets the channel media sources.
        /// </summary>
        Task<IEnumerable<MediaSourceInfo>> GetChannelMediaSources(BaseItem item, CancellationToken cancellationToken);

        /// <summary>
        /// Adds the information to program dto.
        /// </summary>
        /// <param name="programs">The programs.</param>
        /// <param name="fields">The fields.</param>
        /// <param name="user">The user.</param>
        /// <returns>Task.</returns>
        Task AddInfoToProgramDto(IReadOnlyCollection<(BaseItem, BaseItemDto)> programs, ItemFields[] fields, User user = null);

        /// <summary>
        /// Saves the tuner host.
        /// </summary>
        Task<TunerHostInfo> SaveTunerHost(TunerHostInfo info, bool dataSourceChanged = true);
        /// <summary>
        /// Saves the listing provider.
        /// </summary>
        /// <param name="info">The information.</param>
        /// <param name="validateLogin">if set to <c>true</c> [validate login].</param>
        /// <param name="validateListings">if set to <c>true</c> [validate listings].</param>
        /// <returns>Task.</returns>
        Task<ListingsProviderInfo> SaveListingProvider(ListingsProviderInfo info, bool validateLogin, bool validateListings);

        void DeleteListingsProvider(string id);

        Task<TunerChannelMapping> SetChannelMapping(string providerId, string tunerChannelNumber, string providerChannelNumber);

        TunerChannelMapping GetTunerChannelMapping(ChannelInfo channel, NameValuePair[] mappings, List<ChannelInfo> providerChannels);

        /// <summary>
        /// Gets the lineups.
        /// </summary>
        /// <param name="providerType">Type of the provider.</param>
        /// <param name="providerId">The provider identifier.</param>
        /// <param name="country">The country.</param>
        /// <param name="location">The location.</param>
        /// <returns>Task&lt;List&lt;NameIdPair&gt;&gt;.</returns>
        Task<List<NameIdPair>> GetLineups(string providerType, string providerId, string country, string location);

        /// <summary>
        /// Adds the channel information.
        /// </summary>
        /// <param name="items">The items.</param>
        /// <param name="options">The options.</param>
        /// <param name="user">The user.</param>
        void AddChannelInfo(IReadOnlyCollection<(BaseItemDto, LiveTvChannel)> items, DtoOptions options, User user);

        Task<List<ChannelInfo>> GetChannelsForListingsProvider(string id, CancellationToken cancellationToken);
        Task<List<ChannelInfo>> GetChannelsFromListingsProviderData(string id, CancellationToken cancellationToken);

        IListingsProvider[] ListingProviders { get; }

        List<NameIdPair> GetTunerHostTypes();
        Task<List<TunerHostInfo>> DiscoverTuners(bool newDevicesOnly, CancellationToken cancellationToken);

        event EventHandler<GenericEventArgs<TimerEventInfo>> SeriesTimerCancelled;
        event EventHandler<GenericEventArgs<TimerEventInfo>> TimerCancelled;
        event EventHandler<GenericEventArgs<TimerEventInfo>> TimerCreated;
        event EventHandler<GenericEventArgs<TimerEventInfo>> SeriesTimerCreated;

        string GetEmbyTvActiveRecordingPath(string id);

        ActiveRecordingInfo GetActiveRecordingInfo(string path);

        void AddInfoToRecordingDto(BaseItem item, BaseItemDto dto, ActiveRecordingInfo activeRecordingInfo, User user = null);

        List<BaseItem> GetRecordingFolders(User user);
    }

    public class ActiveRecordingInfo
    {
        public string Id { get; set; }
        public string Path { get; set; }
        public TimerInfo Timer { get; set; }
        public CancellationTokenSource CancellationTokenSource { get; set; }
    }
}