using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using xCommons.Extensions;
using xModels.Dtos;
using xStringService.Interfaces;
using xStringService.Interfaces.Dtos;
using xStringService.Models.Dtos;

namespace xStringService.Providers
{
    public abstract class XBaseOwnedItemResourceProvider : IXOwnedItemResourceProvider
    {
        //
        #region Props ...
        /// <summary>
        /// Item Name for Resource Providing ... 
        /// </summary>
        private readonly string item;

        /// <summary>
        /// String Provider Service ...
        /// </summary>
        private readonly IXStringServiceProvider stringProvider;
        #endregion

        //
        #region Constructor ...
        protected XBaseOwnedItemResourceProvider(
            string item,
            IXStringServiceProvider stringProvider
        )
        {
            //
            this.item = item;
            this.stringProvider = stringProvider;
        }
        #endregion

        //
        #region Group Actions ...
        /// <summary>
        /// Retrieve a List of Exists Languages for Current Item ...
        /// </summary>
        /// <param name="owner"></param>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>
        public virtual async Task<IEnumerable<string>> GetLanguages(
            object owner,
            CancellationToken cancellationToken = default
        )
        {
            throw new NotImplementedException();
        }

        /// <summary>
        /// Retrieve all Exists Items of type ...
        /// </summary>
        /// <param name="owner"></param>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>
        public virtual async Task<IEnumerable<XStringDto>> GetResourceLocales(
            object owner,
            CancellationToken cancellationToken = default
        )
        {
            throw new NotImplementedException();
        }

        /// <summary>
        /// Remove all Exists Locales which Related to this Provider ...
        /// </summary>
        /// <param name="owner"></param>
        /// <param name="connectionId"></param>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>
        public virtual async Task RemoveResourceLocales(
            object owner,
            string connectionId = null,
            CancellationToken cancellationToken = default
        )
        {
            throw new NotImplementedException();
        }
        #endregion

        //
        #region Item Actions ...
        /// <summary>
        /// Get all Exists Items for Specified identitifer ...
        /// </summary>
        /// <param name="owner"></param>
        /// <param name="identifier"></param>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>
        public virtual async Task<IEnumerable<XStringDto>> GetResourceLocales(
            object owner,
            object identifier,
            CancellationToken cancellationToken = default
        )
        {
            throw new NotImplementedException();
        }

        /// <summary>
        /// Get all Exists Items for Specified identitifer ...
        /// </summary>
        /// <param name="owner"></param>
        /// <param name="identifier"></param>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>
        public virtual async Task<IEnumerable<XLocaleResourceDto>> GetLocales(
            object owner,
            object identifier,
            CancellationToken cancellationToken = default
        )
        {
            throw new NotImplementedException();
        }

        /// <summary>
        /// Get all Exists Locales Representaion based on Specified Identitifer
        /// as XResourceDto ...
        /// </summary>
        /// <param name="owner"></param>
        /// <param name="identifier"></param>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>
        public virtual async Task<XResourceDto> GetResource(
            object owner,
            object identifier,
            CancellationToken cancellationToken = default
        )
        {
            throw new NotImplementedException();
        }

        /// <summary>
        /// Add Or Update Locale for Specified Identitifer ...
        /// </summary>
        /// <param name="owner"></param>
        /// <param name="identifier"></param>
        /// <param name="locale"></param>
        /// <param name="connectionId"></param>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>
        public virtual async Task<XResourceDto> AddOrUpdateLocale(
            object owner,
            object identifier,
            XLocaleResourceDto locale,
            string connectionId = null,
            CancellationToken cancellationToken = default
        )
        {
            throw new NotImplementedException();
        }

        /// <summary>
        /// Update a Resource State ...
        /// </summary>
        /// <param name="owner"></param>
        /// <param name="identifier"></param>
        /// <param name="resource"></param>
        /// <param name="connectionId"></param>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>
        public virtual async Task<XResourceDto> AddOrUpdateResource(
            object owner,
            object identifier,
            XResourceDto resource,
            string connectionId = null,
            CancellationToken cancellationToken = default
        )
        {
            throw new NotImplementedException();
        }

        /// <summary>
        /// Remove Specified Language Locale of Specified Identifier ...
        /// </summary>
        /// <param name="owner"></param>
        /// <param name="identifier"></param>
        /// <param name="language"></param>
        /// <param name="connectionId"></param>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>
        public virtual async Task<XResourceDto> RemoveLocale(
            object owner,
            object identifier,
            string language,
            string connectionId = null,
            CancellationToken cancellationToken = default
        )
        {
            throw new NotImplementedException();
        }

        /// <summary>
        /// Remove all Exists Locales for Specified Identifier ...
        /// </summary>
        /// <param name="owner"></param>
        /// <param name="identifier"></param>
        /// <param name="connectionId"></param>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>
        public virtual async Task RemoveLocales(
            object owner,
            object identifier,
            string connectionId = null,
            CancellationToken cancellationToken = default
        )
        {
            throw new NotImplementedException();
        }

        /// <summary>
        /// Check Specified ocale Exists for Specified Identifier ...
        /// </summary>
        /// <param name="owner"></param>
        /// <param name="identifier"></param>
        /// <param name="language"></param>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>
        public virtual async Task<bool> HasLocale(
            object owner,
            object identifier,
            string language,
            CancellationToken cancellationToken = default
        )
        {
            throw new NotImplementedException();
        }

        /// <summary>
        /// Get all Exists Languages for Specified Identifier ...
        /// </summary>
        /// <param name="owner"></param>
        /// <param name="identifier"></param>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>
        public virtual async Task<IEnumerable<string>> GetLanguages(
            object owner,
            object identifier = null,
            CancellationToken cancellationToken = default
        )
        {
            throw new NotImplementedException();
        }
        #endregion

        //
        #region Resource Title Action ...
        /// <summary>
        /// Retrieve Resource Title ...
        /// </summary>
        /// <param name="owner"></param>
        /// <param name="identifier"></param>
        /// <returns></returns>
        public virtual string GetResourceTitle(
            object owner = null,
            object identifier = null
        )
        {
            //
            var result = item;

            //
            // Normalization ...
            var ownerStr =
                !owner.IsNull()
                ? $"{owner}"
                : string.Empty;
            var identifierStr =
                !identifier.IsNull()
                ? $"{identifier}"
                : string.Empty;

            //
            // Handle Owner Attach ...
            if (!ownerStr.IsNullOrEmpty())
            {
                result = $"{result}_{ownerStr}";
            }

            //
            // Handle Identifier Attach ...
            if (!identifierStr.IsNullOrEmpty())
            {
                result = $"{result}_{identifierStr}";
            }

            //
            return result;
        }
        #endregion  

        //
        #region Private ...
        private async Task<IEnumerable<XStringDto>> ExtractStrings(
            string resourceTitle,
            CancellationToken cancellationToken = default
        )
        {
            //
            IEnumerable<XStringDto> result = [];

            //
            if (resourceTitle.IsNullOrEmpty())
            {
                return result;
            }

            //
            result = await stringProvider.FindManyAsync(
                includeBuilder: null,
                ignoreSoftDeleteds: true,
                cancellationToken: cancellationToken,
                predicate: x => x.ResourceTitle
                    .ToNormalString()
                    .Contains(resourceTitle),
                orderBuilder: x => x.OrderBy(y => y.Id)
            );

            //
            return result;
        }
        #endregion      
    }
}