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

namespace xStringService.Controllers
{
    /// <summary>
    /// an Implementation of Base Actions of a Controller which Provides 
    /// XString Resource Service Actions ...
    /// </summary>
    public abstract class XBaseStringResourceProviderControllerBase : XBaseIdentityApiV1Controller, IXBaseStringResourceProviderControllerBase
    {
        private readonly IXBaseStringResourceProvider resourceProvider;

        protected XBaseStringResourceProviderControllerBase(
            ILogger<XBaseStringResourceProviderControllerBase> logger,
            XAppConfiguration appConfiguration,
            IXIdentityProvider identityProvider,
            XValidationProvider validationProvider,
            IXBaseStringResourceProvider resourceProvider
        ) : base(
            logger,
            appConfiguration,
            identityProvider,
            validationProvider
        )
        {
            this.resourceProvider = resourceProvider;
        }

        /// <summary>
        /// Add Specified Locales ... 
        /// </summary>
        /// <param name="suffix"></param>
        /// <param name="locales"></param>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>
        [HttpPost("Add")]
        public virtual async Task<ActionResult<IEnumerable<XStringDto>>> Add(
            [FromQuery] string suffix,
            [FromBody] XBaseRangeRequest<XLocaleResourceDto> locales,
            CancellationToken cancellationToken = default
        )
        {
            //
            try
            {
                //
                // Validate ...
                if (!ModelState.IsValid)
                {
                    XException.InvalidArgs.Throw();
                }
                await ValidationProvider
                    .GroupValidationBuilder()
                    .AddNotEmpty(suffix)
                    .AddNotNull(locales)
                    .AddNotZeroChilds(locales.Items)
                    .ValidateGroupAsync();

                //
                var connectionId = GetConnectionId();

                //
                var result = await resourceProvider.Add(
                    suffix: suffix,
                    locales: locales.Items,
                    connectionId: connectionId,
                    cancellationToken: cancellationToken
                );

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

        /// <summary>
        /// Add or Update Specified Locales ...
        /// </summary>
        /// <param name="resource"></param>
        /// <param name="locales"></param>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>
        [HttpPost("AddOrUpdate")]
        public virtual async Task<ActionResult<IEnumerable<XStringDto>>> AddOrUpdate(
            [FromQuery] string resource,
            [FromBody] XBaseRangeRequest<XLocaleResourceDto> locales,
            CancellationToken cancellationToken = default
        )
        {
            //
            try
            {
                //
                // Validate ...
                if (!ModelState.IsValid)
                {
                    XException.InvalidArgs.Throw();
                }
                await ValidationProvider
                    .GroupValidationBuilder()
                    .AddNotEmpty(resource)
                    .AddNotNull(locales)
                    .AddNotZeroChilds(locales.Items)
                    .ValidateGroupAsync();

                //
                var connectionId = GetConnectionId();

                //
                var result = await resourceProvider.AddOrUpdate(
                    resource: resource,
                    locales: locales.Items,
                    connectionId: connectionId,
                    cancellationToken: cancellationToken
                );

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

        /// <summary>
        /// Add Specified Resource ...
        /// </summary>
        /// <param name="suffix"></param>
        /// <param name="item"></param>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>
        [HttpPost("AddResource")]
        public virtual async Task<ActionResult<XResourceDto>> AddResource(
            [FromQuery] string suffix,
            [FromBody] XResourceDto item,
            CancellationToken cancellationToken = default
        )
        {
            //
            try
            {
                //
                // Validate ...
                if (!ModelState.IsValid)
                {
                    XException.InvalidArgs.Throw();
                }
                await ValidationProvider
                    .GroupValidationBuilder()
                    .AddNotEmpty(suffix)
                    .AddNotNull(item)
                    .AddNotZeroChilds(item.Locales)
                    .ValidateGroupAsync();

                //
                var connectionId = GetConnectionId();

                //
                var result = await resourceProvider.AddResource(
                    item: item,
                    suffix: suffix,
                    connectionId: connectionId,
                    cancellationToken: cancellationToken
                );

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

        /// <summary>
        /// Get Specified Locale ...
        /// </summary>
        /// <param name="suffix"></param>
        /// <param name="language"></param>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>
        [HttpGet("GetLocale")]
        public virtual async Task<ActionResult<XLocaleResourceDto>> GetLocale(
            [FromQuery] string suffix,
            [FromQuery] string language = null,
            CancellationToken cancellationToken = default
        )
        {
            //
            try
            {
                //
                // Validate ...
                if (!ModelState.IsValid)
                {
                    XException.InvalidArgs.Throw();
                }
                await ValidationProvider
                    .GroupValidationBuilder()
                    .AddNotEmpty(suffix)
                    .ValidateGroupAsync();

                //
                var result = await resourceProvider.GetLocale(
                    suffix: suffix,
                    language: language,
                    cancellationToken: cancellationToken
                );

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

        /// <summary>
        /// Get Resources of Specified Resource Title ...
        /// </summary>
        /// <param name="suffix"></param>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>
        [HttpGet("GetResource")]
        public virtual async Task<ActionResult<XResourceDto>> GetResource(
            [FromQuery] string suffix,
            CancellationToken cancellationToken = default
        )
        {
            //
            try
            {
                //
                // Validate ...
                if (!ModelState.IsValid)
                {
                    XException.InvalidArgs.Throw();
                }
                await ValidationProvider
                    .GroupValidationBuilder()
                    .AddNotEmpty(suffix)
                    .ValidateGroupAsync();

                //
                var result = await resourceProvider.GetResource(
                    suffix: suffix,
                    cancellationToken: cancellationToken
                );

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

        /// <summary>
        /// Remove all Resources which belongs to Specified Suffix ...
        /// </summary>
        /// <param name="suffix"></param>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>
        [HttpDelete("Remove")]
        public virtual async Task<ActionResult> Remove(
            [FromQuery] string suffix,
            CancellationToken cancellationToken = default
        )
        {
            //
            try
            {
                //
                // Validate ...
                if (!ModelState.IsValid)
                {
                    XException.InvalidArgs.Throw();
                }
                await ValidationProvider
                    .GroupValidationBuilder()
                    .AddNotEmpty(suffix)
                    .ValidateGroupAsync();

                //
                var connectionId = GetConnectionId();

                //
                await resourceProvider.Remove(
                    suffix: suffix,
                    connectionId: connectionId,
                    cancellationToken: cancellationToken
                );

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

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

                //
                var connectionId = GetConnectionId();

                //
                await resourceProvider.Remove(
                    resource: resource,
                    language: language,
                    connectionId: connectionId,
                    cancellationToken: cancellationToken
                );

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