using System;
using System.ComponentModel.DataAnnotations;
using Jellyfin.Api.Constants;
using Jellyfin.Api.Extensions;
using Jellyfin.Api.Helpers;
using Jellyfin.Api.ModelBinders;
using Jellyfin.Data.Entities;
using Jellyfin.Data.Enums;
using MediaBrowser.Controller.Dto;
using MediaBrowser.Controller.Entities;
using MediaBrowser.Controller.Library;
using MediaBrowser.Model.Dto;
using MediaBrowser.Model.Entities;
using MediaBrowser.Model.Querying;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;

namespace Jellyfin.Api.Controllers
{
    /// <summary>
    /// Studios controller.
    /// </summary>
    [Authorize(Policy = Policies.DefaultAuthorization)]
    public class StudiosController : BaseJellyfinApiController
    {
        private readonly ILibraryManager _libraryManager;
        private readonly IUserManager _userManager;
        private readonly IDtoService _dtoService;

        /// <summary>
        /// Initializes a new instance of the <see cref="StudiosController"/> class.
        /// </summary>
        /// <param name="libraryManager">Instance of the <see cref="ILibraryManager"/> interface.</param>
        /// <param name="userManager">Instance of the <see cref="IUserManager"/> interface.</param>
        /// <param name="dtoService">Instance of the <see cref="IDtoService"/> interface.</param>
        public StudiosController(
            ILibraryManager libraryManager,
            IUserManager userManager,
            IDtoService dtoService)
        {
            _libraryManager = libraryManager;
            _userManager = userManager;
            _dtoService = dtoService;
        }

        /// <summary>
        /// Gets all studios from a given item, folder, or the entire library.
        /// </summary>
        /// <param name="startIndex">Optional. The record index to start at. All items with a lower index will be dropped from the results.</param>
        /// <param name="limit">Optional. The maximum number of records to return.</param>
        /// <param name="searchTerm">Optional. Search term.</param>
        /// <param name="parentId">Specify this to localize the search to a specific item or folder. Omit to use the root.</param>
        /// <param name="fields">Optional. Specify additional fields of information to return in the output.</param>
        /// <param name="excludeItemTypes">Optional. If specified, results will be filtered out based on item type. This allows multiple, comma delimited.</param>
        /// <param name="includeItemTypes">Optional. If specified, results will be filtered based on item type. This allows multiple, comma delimited.</param>
        /// <param name="isFavorite">Optional filter by items that are marked as favorite, or not.</param>
        /// <param name="enableUserData">Optional, include user data.</param>
        /// <param name="imageTypeLimit">Optional, the max number of images to return, per image type.</param>
        /// <param name="enableImageTypes">Optional. The image types to include in the output.</param>
        /// <param name="userId">User id.</param>
        /// <param name="nameStartsWithOrGreater">Optional filter by items whose name is sorted equally or greater than a given input string.</param>
        /// <param name="nameStartsWith">Optional filter by items whose name is sorted equally than a given input string.</param>
        /// <param name="nameLessThan">Optional filter by items whose name is equally or lesser than a given input string.</param>
        /// <param name="enableImages">Optional, include image information in output.</param>
        /// <param name="enableTotalRecordCount">Total record count.</param>
        /// <response code="200">Studios returned.</response>
        /// <returns>An <see cref="OkResult"/> containing the studios.</returns>
        [HttpGet]
        [ProducesResponseType(StatusCodes.Status200OK)]
        public ActionResult<QueryResult<BaseItemDto>> GetStudios(
            [FromQuery] int? startIndex,
            [FromQuery] int? limit,
            [FromQuery] string? searchTerm,
            [FromQuery] Guid? parentId,
            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] ItemFields[] fields,
            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] BaseItemKind[] excludeItemTypes,
            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] BaseItemKind[] includeItemTypes,
            [FromQuery] bool? isFavorite,
            [FromQuery] bool? enableUserData,
            [FromQuery] int? imageTypeLimit,
            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] ImageType[] enableImageTypes,
            [FromQuery] Guid? userId,
            [FromQuery] string? nameStartsWithOrGreater,
            [FromQuery] string? nameStartsWith,
            [FromQuery] string? nameLessThan,
            [FromQuery] bool? enableImages = true,
            [FromQuery] bool enableTotalRecordCount = true)
        {
            var dtoOptions = new DtoOptions { Fields = fields }
                .AddClientFields(Request)
                .AddAdditionalDtoOptions(enableImages, enableUserData, imageTypeLimit, enableImageTypes);

            User? user = userId.HasValue && userId != Guid.Empty ? _userManager.GetUserById(userId.Value) : null;

            var parentItem = _libraryManager.GetParentItem(parentId, userId);

            var query = new InternalItemsQuery(user)
            {
                ExcludeItemTypes = excludeItemTypes,
                IncludeItemTypes = includeItemTypes,
                StartIndex = startIndex,
                Limit = limit,
                IsFavorite = isFavorite,
                NameLessThan = nameLessThan,
                NameStartsWith = nameStartsWith,
                NameStartsWithOrGreater = nameStartsWithOrGreater,
                DtoOptions = dtoOptions,
                SearchTerm = searchTerm,
                EnableTotalRecordCount = enableTotalRecordCount
            };

            if (parentId.HasValue)
            {
                if (parentItem is Folder)
                {
                    query.AncestorIds = new[] { parentId.Value };
                }
                else
                {
                    query.ItemIds = new[] { parentId.Value };
                }
            }

            var result = _libraryManager.GetStudios(query);
            var shouldIncludeItemTypes = includeItemTypes.Length != 0;
            return RequestHelpers.CreateQueryResult(result, dtoOptions, _dtoService, shouldIncludeItemTypes, user);
        }

        /// <summary>
        /// Gets a studio by name.
        /// </summary>
        /// <param name="name">Studio name.</param>
        /// <param name="userId">Optional. Filter by user id, and attach user data.</param>
        /// <response code="200">Studio returned.</response>
        /// <returns>An <see cref="OkResult"/> containing the studio.</returns>
        [HttpGet("{name}")]
        [ProducesResponseType(StatusCodes.Status200OK)]
        public ActionResult<BaseItemDto> GetStudio([FromRoute, Required] string name, [FromQuery] Guid? userId)
        {
            var dtoOptions = new DtoOptions().AddClientFields(Request);

            var item = _libraryManager.GetStudio(name);
            if (userId.HasValue && !userId.Equals(Guid.Empty))
            {
                var user = _userManager.GetUserById(userId.Value);

                return _dtoService.GetBaseItemDto(item, dtoOptions, user);
            }

            return _dtoService.GetBaseItemDto(item, dtoOptions);
        }
    }
}