using Core.Cerberos.Adapters;
using Core.Cerberos.Application.UseCases.Permissions.Input;
using Core.Cerberos.Application.UseCases.Permissions.Ports;
using Core.Cerberos.External.Clients;
using Core.Cerberos.External.Clients.Requests;
using FluentValidation;
using Lib.Architecture.BuildingBlocks;
using Lib.Architecture.BuildingBlocks.Helpers;

namespace Core.Cerberos.Application.UseCases.Permissions
{
    public class PermissionHandler :
        IComponentHandler<ChangePermissionStatusRequest>,
        IComponentHandler<GetAllPermissionsRequest>,
        IComponentHandler<GetAllPermissionsByListRequest>,
        IComponentHandler<UpdatePermissionRequest>,
        IComponentHandler<GetPermissionRequest>,
        IComponentHandler<CreatePermissionRequest>
    {
        private readonly IPermissionPort _port;
        private readonly IValidator<ChangePermissionStatusRequest> _changePermissionStatusValidator;
        private readonly IValidator<CreatePermissionRequest> _registerPermissionValidator;
        private readonly IValidator<UpdatePermissionRequest> _updatePermissionValidator;
        private readonly ICerberosServiceClient _cerberosDALService;

        public PermissionHandler(
            IPermissionPort port,
            IValidator<ChangePermissionStatusRequest> changePermissionStatusValidator,
            IValidator<CreatePermissionRequest> registerPermissionValidator,
            IValidator<UpdatePermissionRequest> updatePermissionValidator,
            ICerberosServiceClient cerberosDALService)
        {
            _port = port ?? throw new ArgumentNullException(nameof(port));
            _changePermissionStatusValidator = changePermissionStatusValidator ?? throw new ArgumentNullException(nameof(changePermissionStatusValidator));
            _registerPermissionValidator = registerPermissionValidator ?? throw new ArgumentNullException(nameof(registerPermissionValidator));
            _updatePermissionValidator = updatePermissionValidator ?? throw new ArgumentNullException(nameof(updatePermissionValidator));
            _cerberosDALService = cerberosDALService ?? throw new ArgumentNullException(nameof(cerberosDALService));
        }

        public async ValueTask ExecuteAsync(GetPermissionRequest command, CancellationToken cancellationToken = default)
        {
            try
            {
                ArgumentNullException.ThrowIfNull(command);

                var result = await _cerberosDALService.GetPermissionByIdAsync(command.Id, cancellationToken).ConfigureAwait(false);

                if (result == null)
                {
                    _port.NoContentSuccess();
                    return;
                }

                _port.Success(result);
            }
            catch (Exception ex)
            {
                ApiResponseHelper.EvaluatePort(ex, _port);
            }
        }

        public async ValueTask ExecuteAsync(GetAllPermissionsRequest command, CancellationToken cancellationToken = default)
        {
            try
            {
                ArgumentNullException.ThrowIfNull(command);

                var _result = await _cerberosDALService.GetAllPermissionsAsync().ConfigureAwait(false);
                if (!_result.Any())
                {
                    _port.NoContentSuccess();
                    return;
                }
                _port.Success(_result.ToList());
            }
            catch (Exception ex)
            {
                ApiResponseHelper.EvaluatePort(ex, _port);
            }
        }

        public async ValueTask ExecuteAsync(GetAllPermissionsByListRequest command, CancellationToken cancellationToken = default)
        {
            try
            {
                ArgumentNullException.ThrowIfNull(command);

                var _result = await _cerberosDALService.GetAllPermissionsByListAsync(command.Permissions, cancellationToken).ConfigureAwait(false);
                if (!_result.Any())
                {
                    _port.NoContentSuccess();
                    return;
                }
                _port.Success(_result.ToList());
            }
            catch (Exception ex)
            {
                ApiResponseHelper.EvaluatePort(ex, _port);
            }
        }

        public async ValueTask ExecuteAsync(ChangePermissionStatusRequest command, CancellationToken cancellationToken = default)
        {
            try
            {
                ArgumentNullException.ThrowIfNull(command);

                if (!command.IsValid(_changePermissionStatusValidator))
                {
                    _port.ValidationErrors(command.Notifications);
                    return;
                }

                var result = await _cerberosDALService.ChangeStatusPermissionAsync(command.Id, command.Status, cancellationToken).ConfigureAwait(false);

                if (result == null)
                {
                    _port.NoContentSuccess();
                    return;
                }

                _port.Success(result);
            }
            catch (Exception ex)
            {
                ApiResponseHelper.EvaluatePort(ex, _port);
            }
        }

        public async ValueTask ExecuteAsync(CreatePermissionRequest command, CancellationToken cancellationToken = default)
        {
            try
            {
                ArgumentNullException.ThrowIfNull(command);

                if (!command.IsValid(_registerPermissionValidator))
                {
                    _port.ValidationErrors(command.Notifications);
                    return;
                }

                var request = new PermissionRequest
                {
                    Name = command.Name,
                    Description = command.Description,
                    AccessLevel = command.AccessLevel
                };

                var result = await _cerberosDALService.CreatePermissionAsync(request, cancellationToken).ConfigureAwait(false);

                if (result == null)
                {
                    _port.NoContentSuccess();
                    return;
                }

                _port.Success(result);
            }
            catch (Exception ex)
            {
                ApiResponseHelper.EvaluatePort(ex, _port);
            }
        }

        public async ValueTask ExecuteAsync(UpdatePermissionRequest command, CancellationToken cancellationToken = default)
        {
            try
            {
                ArgumentNullException.ThrowIfNull(command);

                if (!command.IsValid(_updatePermissionValidator))
                {
                    _port.ValidationErrors(command.Notifications);
                    return;
                }

                var request = new PermissionAdapter
                {
                    Id = command.Id,
                    Name = command.Name,
                    Description = command.Description,
                    AccessLevel = command.AccessLevel,
                    Status = command.Status
                };

                string id = command.Id;

                var result = await _cerberosDALService.UpdatePermissionAsync(request, id, cancellationToken).ConfigureAwait(false);

                if (result == null)
                {
                    _port.NoContentSuccess();
                    return;
                }

                _port.Success(result);
            }
            catch (Exception ex)
            {
                ApiResponseHelper.EvaluatePort(ex, _port);
            }
        }
    }
}