using LCU.Api.Internal.FileOperations.Validations;
using LCU.Library.Internal.FileOperationsModels.Models;
using LCU.Library.Internal.LCUServiceFactory.Configurations;
using Newtonsoft.Json;
using System;
using System.IO;

namespace LCU.Api.Internal.FileOperations.Services.FileActionServices
{
	public class AppendFileService : FileActionService, IFileActionService, IActionService<AppendFileRequest>
    {
		public AppendFileService(ServicesFactoryConfiguration servicesFactoryConfiguration)
            : base(servicesFactoryConfiguration)
		{
		}

		public RequestResponse ExecuteAction(QueueRequest queueRequest)
        {
            var requestResponse = new RequestResponse();

            try
            {
                var fileRequest = JsonConvert.DeserializeObject<AppendFileRequest>(queueRequest.Request);

                requestResponse = PerformRequest(fileRequest);

                requestResponse.ReturnResponse = fileRequest;
                return requestResponse;
            }
            catch (Exception exception)
            {
                return RequestResponseHelper.ExceptionUpdateRequestResponse(requestResponse,
                                                                       queueRequest.FileOperationType,
                                                                       exception.Message);
            }
        }

        public RequestResponse PerformRequest(AppendFileRequest request)
        {
            return OperationService.PerformOperation(request, IsRequestValid, AppendFile);
        }
        private void AppendFile(AppendFileRequest request)
        {
            try
            {
                File.AppendAllText(request.FullFilePath, request.FileData);
            }
            catch (Exception exception)
            {
                throw new Exception($"Exception thrown while trying to ExecuteRequestAction. " +
                                    $"Request: {JsonConvert.SerializeObject(request)}" +
                                    $"ExceptionMessage: {exception.Message}");
            }
        }

        public RequestResponse PreQueueValidation(AppendFileRequest originalRequest)
        {
            var requestResponse = new RequestResponse();

            requestResponse = IsRequestValid(originalRequest, requestResponse);

            return requestResponse;
        }

        public RequestResponse IsRequestValid(AppendFileRequest originalRequest, RequestResponse requestResponse)
        {
            requestResponse = DirectoryValidation.ValidateDirectoryExists(originalRequest.DestinationPath, requestResponse);

            return requestResponse;
        }
    }
}