using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Mvc;
using Microsoft.EntityFrameworkCore.Query;
using Microsoft.Extensions.Logging;
using xCommons.Configurations;
using xCommons.Extensions;
using xCommons.Providers;
using xExceptions.Constants;
using xIdentityService.Interfaces;
using xModels.Dtos;
using xPushService.Controllers;
using xStringService.Interfaces;
using xStringService.Models.Dtos;
using xStringService.Models.Entities;
using xStringService.Providers.Dtos;

namespace xStringService.Controllers
{
    public abstract class XStringProviderControllerBase : XBaseProvidedController<XString, XStringDto, int, XStringDtoHub>, IXStringProviderController
    {
        private readonly IXStringProvider provider;

        protected XStringProviderControllerBase(
            ILogger<XStringProviderControllerBase> logger,
            XAppConfiguration appConfiguration,
            IXIdentityProvider identityProvider,
            XValidationProvider validationProvider,
            IXStringProvider provider,
            Func<IQueryable<XString>, IOrderedQueryable<XString>> defaultOrderBuilder = null,
            Func<IQueryable<XString>, IIncludableQueryable<XString, object>> defaultIncludeBuilder = null
        ) : base(
            logger,
            appConfiguration,
            identityProvider,
            validationProvider,
            provider,
            defaultOrderBuilder,
            defaultIncludeBuilder
        )
        {
            this.provider = provider;
        }

        //
        #region Tools ...
        /// <summary>
        /// Retrieve a List of Exists Languages ...
        /// </summary>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>
        [HttpGet("Languages")]
        public virtual async Task<ActionResult<IEnumerable<string>>> GetLanguages(
            CancellationToken cancellationToken = default
        )
        {
            //
            try
            {
                //
                var result = await provider
                    .GetLanguages(cancellationToken);

                //
                return Ok(result.ToDynamicObject());
            }
            catch (Exception ex)
            {
                //
                var result = GetExceptionActionResult(ex);
                return result;
            }
        }

        /// <summary>
        /// Retrieve a List of Resource Titles ...
        /// </summary>
        /// <param name="language">if provided, returns all language Specified resource titles, if not, all Resource Titles</param>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>
        [HttpGet("ResourceTitles")]
        public virtual async Task<ActionResult<IEnumerable<string>>> GetResourceTitles(
            [FromQuery] string language = null,
            CancellationToken cancellationToken = default
        )
        {
            //
            try
            {
                //
                var result = await provider
                    .GetResourceTitles(
                        language: language,
                        cancellationToken: cancellationToken
                    );

                //
                return Ok(result.ToDynamicObject());
            }
            catch (Exception ex)
            {
                //
                var result = GetExceptionActionResult(ex);
                return result;
            }
        }

        /// <summary>
        /// Retrieve all Exists Items which belongs to Specified Resource Title ...
        /// </summary>
        /// <param name="resource">Specified Resource Title</param>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>
        [HttpGet("ResourceLocales")]
        public virtual async Task<ActionResult<IEnumerable<XStringDto>>> GetResourceLocales(
            [FromQuery] string resource,
            CancellationToken cancellationToken = default
        )
        {
            //
            try
            {
                //
                var result = await provider
                    .GetResourceLocales(
                        resource: resource,
                        cancellationToken: cancellationToken
                    );

                //
                return Ok(result.ToDynamicObject());
            }
            catch (Exception ex)
            {
                //
                var result = GetExceptionActionResult(ex);
                return result;
            }
        }

        /// <summary>
        /// Extract Translation of a Resource in Specified Language ...
        /// </summary>
        /// <param name="language">Specified Language ...</param>
        /// <param name="resource">Specified Resource Title ...</param>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>
        [HttpGet("Translation")]
        public virtual async Task<ActionResult<string>> GetResourceTranslation(
            [FromQuery] string language,
            [FromQuery] string resource,
            CancellationToken cancellationToken = default
        )
        {
            //
            try
            {
                //
                var result = await provider
                    .GetResourceTranslation(
                        language: language,
                        resource: resource,
                        cancellationToken: cancellationToken
                    );

                //
                return Ok(result);
            }
            catch (Exception ex)
            {
                //
                var result = GetExceptionActionResult(ex);
                return result;
            }
        }

        /// <summary>
        /// Retrieve a Resource as Locale Model ...
        /// </summary>
        /// <param name="language">Specified Language ...</param>
        /// <param name="resource">Specified Resource Title ...</param>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>
        [HttpGet("Locale")]
        public virtual async Task<ActionResult<XLocaleResourceDto>> GetLocale(
            [FromQuery] string language,
            [FromQuery] string resource,
            CancellationToken cancellationToken = default
        )
        {
            //
            try
            {
                //
                var result = await provider
                    .GetLocale(
                        language: language,
                        resource: resource,
                        cancellationToken: cancellationToken
                    );

                //
                return Ok(result.ToDynamicObject());
            }
            catch (Exception ex)
            {
                //
                var result = GetExceptionActionResult(ex);
                return result;
            }
        }

        /// <summary>
        /// Retrieve all Exists Resource Instances as Locale Models ...
        /// </summary>
        /// <param name="resource"></param>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>
        [HttpGet("Locales")]
        public virtual async Task<ActionResult<IEnumerable<XLocaleResourceDto>>> GetLocales(
            [FromQuery] string resource,
            CancellationToken cancellationToken = default
        )
        {
            //
            try
            {
                //
                var result = await provider
                    .GetLocales(
                        resource: resource,
                        cancellationToken: cancellationToken
                    );

                //
                return Ok(result.ToDynamicObject());
            }
            catch (Exception ex)
            {
                //
                var result = GetExceptionActionResult(ex);
                return result;
            }
        }

        /// <summary>
        /// Retrieve all Locales of Specified Resource and Represent as XResourceDto ...
        /// </summary>
        /// <param name="resource"></param>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>
        [HttpGet("GetResource")]
        public virtual async Task<ActionResult<XResourceDto>> GetResource(
            [FromQuery] string resource,
            CancellationToken cancellationToken = default
        )
        {
            //
            try
            {
                //
                var result = await provider
                    .GetResource(
                        resource: resource,
                        cancellationToken: cancellationToken
                    );

                //
                return Ok(result.ToDynamicObject());
            }
            catch (Exception ex)
            {
                //
                var result = GetExceptionActionResult(ex);
                return result;
            }
        }

        /// <summary>
        /// Add or Update a Resource Model ...
        /// </summary>
        /// <param name="resource">a XResourceDto Model ...</param>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>
        [HttpPost("AddOrUpdateResource")]
        public virtual async Task<ActionResult<XResourceDto>> AddOrUpdateResource(
            [FromBody] XResourceDto resource,
            CancellationToken cancellationToken = default
        )
        {
            //
            try
            {
                //
                // Validate ...
                if (!ModelState.IsValid)
                {
                    XException.InvalidArgs.Throw();
                }
                await ValidationProvider
                    .GroupValidationBuilder()
                    .AddNotNull(resource)
                    .AddNotEmpty(resource.Resource)
                    .ValidateGroupAsync();

                //
                var userInfo = await GetUserInfo();
                var connectionId = GetConnectionId();

                //
                var result = await provider
                    .AddOrUpdateResource(
                        resource: resource,
                        userInfo: userInfo,
                        connectionId: connectionId,
                        cancellationToken: cancellationToken
                    );

                //
                return Ok(result.ToDynamicObject());
            }
            catch (Exception ex)
            {
                //
                var result = GetExceptionActionResult(ex);
                return result;
            }
        }

        /// <summary>
        /// Remove Specified Resource Model ...
        /// </summary>
        /// <param name="resource">a XResourceDto Model ...</param>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>
        [HttpPost("RemoveResource")]
        public virtual async Task<ActionResult> RemoveResource(
            [FromBody] XResourceDto resource,
            CancellationToken cancellationToken = default
        )
        {
            //
            try
            {
                //
                // Validate ...
                if (!ModelState.IsValid)
                {
                    XException.InvalidArgs.Throw();
                }
                await ValidationProvider
                    .GroupValidationBuilder()
                    .AddNotNull(resource)
                    .AddNotEmpty(resource.Resource)
                    .ValidateGroupAsync();

                //
                var userInfo = await GetUserInfo();
                var connectionId = GetConnectionId();

                //
                await provider
                    .RemoveResource(
                        resource: resource,
                        userInfo: userInfo,
                        connectionId: connectionId,
                        cancellationToken: cancellationToken
                    );

                //
                return Ok();
            }
            catch (Exception ex)
            {
                //
                var result = GetExceptionActionResult(ex);
                return result;
            }
        }
        #endregion
    }
}