using System;
using System.Collections.Generic;
using System.Linq.Expressions;
using System.Threading.Tasks;
using xCommons.Configurations;
using xDataService.Configuration;
using xModels.Dtos;
using xStringService.Interfaces.Entities;
using xStringService.Models.Dtos;
using xStringService.Models.Entities;

namespace xStringService.Interfaces
{
    public interface IXStringProvider
    {
        //
        #region Props ...
        IXStringRepository Repository { get; }
        XAppConfiguration AppConfiguration { get; }
        XDataServiceConfiguration DataConfiguration { get; }
        #endregion

        //
        #region Retrievers ...
        /// <summary>
        /// Retrieve all Exists Languages ...
        /// </summary>
        /// <returns></returns>
        Task<IEnumerable<string>> GetLanguages();

        /// <summary>
        /// Check Specified Resource Exists or not ...
        /// </summary>
        /// <param name="resource"></param>
        /// <param name="language"></param>
        /// <returns></returns>
        Task<bool> IsResourceExists(
            string resource,
            string language = null
        );

        /// <summary>
        /// Retrieve Specified Translation of Specified Resource ...
        /// </summary>
        /// <param name="resource"></param>
        /// <param name="language"></param>
        /// <returns></returns>
        Task<string> GetResourceValue(
            string resource,
            string language = null
        );

        /// <summary>
        /// Retrieve an Specified Resource Items ...
        /// </summary>
        /// <param name="resource"></param>
        /// <returns></returns>
        Task<IEnumerable<XStringDto>> GetResources(string resource);

        /// <summary>
        /// Retrieve Specified Resource Items as XResourceDto Presentation ...
        /// </summary>
        /// <param name="resource"></param>
        /// <returns></returns>
        Task<XResourceDto> GetResource(string resource);
        #endregion

        //
        #region Query ...
        /// <summary>
        /// Query Resource IDs ...
        /// </summary>
        /// <param name="query"></param>
        /// <returns></returns>
        Task<XQueryResult<string>> QueryResourceIds(XQuery query);

        /// <summary>
        /// Query Specified Language Resources ...
        /// </summary>
        /// <param name="query"></param>
        /// <param name="language"></param>
        /// <returns></returns>
        Task<XQueryResult<XStringDto>> QueryLanguageResources(
            XQuery query,
            string language = null //
        );

        /// <summary>
        /// Query Locale Resources ...
        /// </summary>
        /// <param name="query"></param>
        /// <param name="language"></param>
        /// <returns></returns>
        Task<XQueryResult<XLocaleResourceDto>> QueryLocaleResources(
            XQuery query,
            string language = null //
        );

        /// <summary>
        /// Conditional Query Resources ...
        /// </summary>
        /// <param name="query"></param>
        /// <param name="condition"></param>
        /// <param name="language"></param>
        /// <returns></returns>
        Task<XQueryResult<XStringDto>> ConditionalQueryResources(
            XQuery query,
            Expression<Func<XString, bool>> condition,
            string language = null
        );
        #endregion

        //
        #region Add/Update Actions ...
        /// <summary>
        /// Add Specified Resource ...
        /// </summary>
        /// <param name="resource"></param>
        /// <param name="value"></param>
        /// <param name="language"></param>
        /// <returns></returns>
        Task<bool> Add(
            string resource,
            string value,
            string language = null
        );

        /// <summary>
        /// Update Resource ...
        /// </summary>
        /// <param name="resource"></param>
        /// <param name="value"></param>
        /// <param name="language"></param>
        /// <returns></returns>
        Task<bool> Update(
            string resource,
            string value,
            string language = null
        );

        /// <summary>
        /// Add Or Update Resource ...
        /// </summary>
        /// <param name="resource"></param>
        /// <param name="value"></param>
        /// <param name="language"></param>
        /// <returns></returns>
        Task<bool> AddOrUpdate(
            string resource,
            string value,
            string language = null
        );

        /// <summary>
        /// Add Specified Resource ...
        /// </summary>
        /// <param name="item"></param>
        /// <returns></returns>
        Task<XStringDto> AddEntity(XStringDto item);

        /// <summary>
        /// Update Specified Entity ...
        /// </summary>
        /// <param name="item"></param>
        /// <returns></returns>
        Task<XStringDto> UpdateEntity(XStringDto item);

        /// <summary>
        /// Add Or Update Specified Entitiy ... 
        /// </summary>
        /// <param name="item"></param>
        /// <returns></returns>
        Task<XStringDto> AddOrUpdateEntity(XStringDto item);

        /// <summary>
        /// Add Specified Locale Resource ...
        /// </summary>
        /// <param name="item"></param>
        /// <param name="resource"></param>
        /// <returns></returns>
        Task<XStringDto> AddByLocaleResource(
            XLocaleResourceDto item,
            string resource
        );

        /// <summary>
        /// Update Specified Locale Resource ...
        /// </summary>
        /// <param name="item"></param>
        /// <param name="resource"></param>
        /// <returns></returns>
        Task<XStringDto> UpdateByLocaleResource(
            XLocaleResourceDto item,
            string resource
        );

        /// <summary>
        /// Add Or Update Resource By Locale ...
        /// </summary>
        /// <param name="item"></param>
        /// <param name="resource"></param>
        /// <returns></returns>
        Task<XStringDto> AddOrUpdateByLocaleResource(
            XLocaleResourceDto item,
            string resource
        );

        /// <summary>
        /// Add Or Update all XResourceDto(s) Locales ...
        /// </summary>
        /// <param name="item"></param>
        /// <returns></returns>
        Task<IEnumerable<XStringDto>> AddByResource(XResourceDto item);
        #endregion

        //
        #region Remove Actions ...
        /// <summary>
        /// Remove all Specified Language's Resources ...
        /// </summary>
        /// <param name="language"></param>
        /// <returns></returns>
        Task RemoveLanguageResources(string language);

        /// <summary>
        /// Remove all Specified Resource Ids instances ... 
        /// </summary>
        /// <param name="resource"></param>
        /// <returns></returns>
        Task<IEnumerable<XStringDto>> RemoveResource(string resource);

        /// <summary>
        /// Remove Specified Resource ...
        /// </summary>
        /// <param name="resource"></param>
        /// <param name="language"></param>
        /// <returns></returns>
        Task<bool> Remove(
            string resource,
            string language = null
        );

        /// <summary>
        /// Remove all Resource of Specified XResourceDto ...
        /// </summary>
        /// <param name="item"></param>
        /// <returns></returns>
        Task RemoveByResource(XResourceDto item);
        #endregion
    }
}