using System.Collections.Generic;
using System.Linq;
using MediaBrowser.Model.Entities;
using MediaBrowser.Model.Querying;
using ServiceStack.ServiceHost;
using System;

namespace MediaBrowser.Api.UserLibrary
{
    public abstract class BaseItemsRequest
    {
        /// <summary>
        /// Skips over a given number of items within the results. Use for paging.
        /// </summary>
        /// <value>The start index.</value>
        [ApiMember(Name = "StartIndex", Description = "Optional. The record index to start at. All items with a lower index will be dropped from the results.", IsRequired = false, DataType = "int", ParameterType = "query", Verb = "GET")]
        public int? StartIndex { get; set; }

        /// <summary>
        /// The maximum number of items to return
        /// </summary>
        /// <value>The limit.</value>
        [ApiMember(Name = "Limit", Description = "Optional. The maximum number of records to return", IsRequired = false, DataType = "int", ParameterType = "query", Verb = "GET")]
        public int? Limit { get; set; }

        /// <summary>
        /// Whether or not to perform the query recursively
        /// </summary>
        /// <value><c>true</c> if recursive; otherwise, <c>false</c>.</value>
        [ApiMember(Name = "Recursive", Description = "When searching within folders, this determines whether or not the search will be recursive. true/false", IsRequired = false, DataType = "boolean", ParameterType = "query", Verb = "GET")]
        public bool Recursive { get; set; }

        /// <summary>
        /// Gets or sets the sort order.
        /// </summary>
        /// <value>The sort order.</value>
        [ApiMember(Name = "SortOrder", Description = "Sort Order - Ascending,Descending", IsRequired = false, DataType = "string", ParameterType = "query", Verb = "GET")]
        public SortOrder? SortOrder { get; set; }

        /// <summary>
        /// Specify this to localize the search to a specific item or folder. Omit to use the root.
        /// </summary>
        /// <value>The parent id.</value>
        [ApiMember(Name = "ParentId", Description = "Specify this to localize the search to a specific item or folder. Omit to use the root", IsRequired = false, DataType = "string", ParameterType = "query", Verb = "GET")]
        public string ParentId { get; set; }

        /// <summary>
        /// Fields to return within the items, in addition to basic information
        /// </summary>
        /// <value>The fields.</value>
        [ApiMember(Name = "Fields", Description = "Optional. Specify additional fields of information to return in the output. This allows multiple, comma delimeted. Options: AudioInfo, Budget, Chapters, CriticRatingSummary, DateCreated, DisplayMediaType, EndDate, Genres, HomePageUrl, ItemCounts, IndexOptions, Locations, MediaStreams, Overview, OverviewHtml, ParentId, Path, People, ProviderIds, PrimaryImageAspectRatio, Revenue, SeriesInfo, SortName, Studios, Taglines, TrailerUrls, UserData", IsRequired = false, DataType = "string", ParameterType = "query", Verb = "GET", AllowMultiple = true)]
        public string Fields { get; set; }

        /// <summary>
        /// Gets or sets the exclude item types.
        /// </summary>
        /// <value>The exclude item types.</value>
        [ApiMember(Name = "ExcludeItemTypes", Description = "Optional. If specified, results will be filtered based on item type. This allows multiple, comma delimeted.", IsRequired = false, DataType = "string", ParameterType = "query", Verb = "GET", AllowMultiple = true)]
        public string ExcludeItemTypes { get; set; }

        /// <summary>
        /// Gets or sets the include item types.
        /// </summary>
        /// <value>The include item types.</value>
        [ApiMember(Name = "IncludeItemTypes", Description = "Optional. If specified, results will be filtered based on item type. This allows multiple, comma delimeted.", IsRequired = false, DataType = "string", ParameterType = "query", Verb = "GET", AllowMultiple = true)]
        public string IncludeItemTypes { get; set; }

        /// <summary>
        /// Filters to apply to the results
        /// </summary>
        /// <value>The filters.</value>
        [ApiMember(Name = "Filters", Description = "Optional. Specify additional filters to apply. This allows multiple, comma delimeted. Options: IsFolder, IsNotFolder, IsUnplayed, IsPlayed, IsFavorite, IsRecentlyAdded, IsResumable, Likes, Dislikes", IsRequired = false, DataType = "string", ParameterType = "query", Verb = "GET", AllowMultiple = true)]
        public string Filters { get; set; }

        /// <summary>
        /// Gets or sets the media types.
        /// </summary>
        /// <value>The media types.</value>
        [ApiMember(Name = "MediaTypes", Description = "Optional filter by MediaType. Allows multiple, comma delimited.", IsRequired = false, DataType = "string", ParameterType = "query", Verb = "GET", AllowMultiple = true)]
        public string MediaTypes { get; set; }

        /// <summary>
        /// Gets the filters.
        /// </summary>
        /// <returns>IEnumerable{ItemFilter}.</returns>
        public IEnumerable<ItemFilter> GetFilters()
        {
            var val = Filters;

            if (string.IsNullOrEmpty(val))
            {
                return new ItemFilter[] { };
            }

            return val.Split(',').Select(v => (ItemFilter)Enum.Parse(typeof(ItemFilter), v, true));
        }

        /// <summary>
        /// Gets the item fields.
        /// </summary>
        /// <returns>IEnumerable{ItemFields}.</returns>
        public IEnumerable<ItemFields> GetItemFields()
        {
            var val = Fields;

            if (string.IsNullOrEmpty(val))
            {
                return new ItemFields[] { };
            }

            return val.Split(',').Select(v =>
            {
                ItemFields value;

                if (Enum.TryParse(v, true, out value))
                {
                    return (ItemFields?)value;
                }
                return null;

            }).Where(i => i.HasValue).Select(i => i.Value);
        }
    }
}