using LCU.Api.Internal.Dispatcher.Configurations;
using LCU.Api.Internal.DispatcherLib.Repositories;
using LCU.Api.Internal.DispatcherSharedLib.BuilderServices;
using LCU.Library.Internal.ApiResponse.Models;
using LCU.Library.Internal.LcuMassTransitModels;
using Microsoft.Data.SqlClient;
using Newtonsoft.Json;
using System.Collections.Generic;
namespace LCU.Api.Internal.Dispatcher.Services;

public class WorkItemService : IWorkItemService
{
    private readonly IUnitOfWork _unitOfWork;
    private readonly IWorkItemRepository _workItemRepository;
    private readonly IWorkItemExecutionService _workItemExecutionService;
    private readonly IActionBuilderService _actionBuilderService;
    private readonly ConnectionConfiguration _connectionConfiguration;
    private readonly ReceiveEndpointConfiguration _completionReceiveEndpoint;
    private readonly ApiConfiguration _apiConfiguration;

    public WorkItemService(IUnitOfWork unitOfWork,
                           IWorkItemRepository workItemRepository,
                           IWorkItemExecutionService workItemExecutionService,
                           IActionBuilderService actionBuilderService,
                           ConnectionConfiguration connectionConfiguration,
                           ReceiveEndpointConfigurations queueReceiveEndpointsConfigurations,
                           ApiConfiguration apiConfiguration)
    {
        _unitOfWork = unitOfWork;
        _workItemRepository = workItemRepository;
        _workItemExecutionService = workItemExecutionService;
        _actionBuilderService = actionBuilderService;
        _connectionConfiguration = connectionConfiguration;
        _completionReceiveEndpoint = queueReceiveEndpointsConfigurations.CompletionReceiveEndpoint;
        _apiConfiguration = apiConfiguration;
    }

    public async Task<WorkItem> GetByIdAsync(int id)
    {
        WorkItem workItem = null;
        try
        {
            workItem = await _workItemRepository.FindByIdAsync(id);
            ArgumentNullException.ThrowIfNull(workItem);
        }
        catch (Exception exception)
        {
            Log.Error(exception, $"Failure retrieving dispatcher workitem with id {id}.");
            throw new ServiceException($"Failure retrieving dispatcher workitem with id {id}.");
        }

        return workItem;
    }

    public async Task<IEnumerable<WorkItem>> GetByJobIdAsync(int jobId)
    {
        IEnumerable<WorkItem> workItems = null;
        try
        {
            workItems = await _workItemRepository.FindByJobIdAsync(jobId);
            ArgumentNullException.ThrowIfNull(workItems);
        }
        catch (Exception exception)
        {
            Log.Error(exception, $"Failure retrieving dispatcher workitems with JobId {jobId}.");
            throw new ServiceException($"Failure retrieving dispatcher workitems with JobId {jobId}.");
        }

        return workItems;
    }

    
    public async Task<IEnumerable<WorkItem>> GetByJobIdWithExecutionsAsync(int jobId)
    {
        IEnumerable<WorkItem> workItems = null;
        try
        {
            workItems = await _workItemRepository.FindByJobIdWithExecutionsAsync(jobId,
                                                                                    _apiConfiguration.NumberOfWorkItemExecutions,
                                                                                    _apiConfiguration.NumberOfExecutionMessages);
            ArgumentNullException.ThrowIfNull(workItems);
        }
        catch (Exception exception)
        {
            Log.Error(exception, $"Failure retrieving dispatcher workitems and executions with JobId {jobId}.");
            throw new ServiceException($"Failure retrieving dispatcher workitems and executions with JobId {jobId}.");
        }

        return workItems;
    }

    public async Task<WorkItem> GetFirstOrDefaultWorkItemByJobId(int jobId)
    {
        WorkItem workItem = null;
        try
        {
            workItem = await _workItemRepository.GetFirstOrDefaultWorkItemByJobId(jobId);
        }
        catch (Exception exception)
        {
            Log.Error(exception, $"Failure retrieving first or default workItem with JobId: {jobId}.");
            throw new ServiceException($"Failure retrieving first or default workItem with JobId: {jobId}.");
        }

        return workItem;
    }

    public async Task<WorkItem> GetNextWorkItemByJobId(int jobId, int currentWorkItemOrder)
    {
        WorkItem workItem = null;
        try
        {
            workItem = await _workItemRepository.GetNextWorkItemByJobId(jobId, currentWorkItemOrder);
        }
        catch (Exception exception)
        {
            Log.Error(exception, $"Failure retrieving next workItem with JobId: {jobId}.");
            throw new ServiceException($"Failure retrieving next workItem with JobId: {jobId}.");
        }

        return workItem;
    }

    public async Task<ICollection<WorkItem>> PopulateActionFieldsAndUpdateList(ICollection<WorkItem> workItems)
    {
        try
        {
            var updatedWorkItems = new List<WorkItem>();
            foreach (var workItem in workItems)
            {
                var newWorkItem = workItem;
                newWorkItem = PopulateActionFields(newWorkItem);
                newWorkItem = await UpdateAsync(newWorkItem);
                updatedWorkItems.Add(newWorkItem);
            }

            return updatedWorkItems;
        }
        catch (Exception exception)
        {
            Log.Error(exception, $"Failure populating action fields and updating dispatcher workitems.");
        }

        return null;
    }

    public async Task<WorkItem> ResetCanceledJobCounter(WorkItem workItem)
    {
        var trackedWorkItem = await _workItemRepository.GetTrackedWorkItem(workItem.WorkItemId);
        trackedWorkItem.CanceledJobCounter = 0;
        await _unitOfWork.CompleteAsync();
        return await _workItemRepository.FindByIdAsync(trackedWorkItem.WorkItemId);
    }

    public async Task<WorkItem> IncreaseCanceledJobCounter(WorkItem workItem)
    {
        var trackedWorkItem = await _workItemRepository.GetTrackedWorkItem(workItem.WorkItemId);
        trackedWorkItem.CanceledJobCounter++;
        await _unitOfWork.CompleteAsync();
        return await _workItemRepository.FindByIdAsync(trackedWorkItem.WorkItemId);
    }

    public async Task<WorkItem> UpdateAsync(WorkItem workItem)
    {
        try
        {
            _workItemRepository.Update(workItem);
            await _unitOfWork.CompleteAsync();

            return workItem;
        }
        catch (SqlException sqlException)
        {
            Log.Error(sqlException, $"SQL Failure updating dispatcher workitem with id {workItem.WorkItemId}");
            throw new ServiceException($"SQL Failure updating dispatcher workitem with id {workItem.WorkItemId}");
        }
        catch (Exception exception)
        {
            Log.Error(exception, $"Failure updating dispatcher workitem with id {workItem.WorkItemId}");
            throw new ServiceException($"Failure updating dispatcher workitem with id {workItem.WorkItemId}");
        }
    }

    public void SaveList(ICollection<WorkItem> workItems)
    {
        try
        {
            _workItemRepository.AddList(workItems);
            _unitOfWork.Complete();
        }
        catch (Exception exception)
        {
            Log.Error(exception, $"Failure saving list of workitems.");
            throw new ServiceException($"Failure saving list of workitems.");
        }
    }

    public async Task DeleteList(ICollection<WorkItem> workItems)
    {
        try
        {
            foreach (var workItem in workItems)
            {
                var workItemExecutions = await _workItemExecutionService.GetAllByWorkItemId(workItem.WorkItemId);
                workItem.WorkItemExecutions = workItemExecutions.ToList();
            }

            _workItemRepository.RemoveList(workItems);
            await _unitOfWork.CompleteAsync();
        }
        catch (SqlException sqlException)
        {
            Log.Error(sqlException, $"SQL Failure removing dispatcher workitems");
            throw new ServiceException($"SQL Failure removing dispatcher workitems");
        }
        catch (Exception exception)
        {
            Log.Error(exception, $"Failure removing dispatcher workitems");
            throw new ServiceException($"Failure removing dispatcher workitems");
        }

    }

    public WorkItem PopulateActionFields(WorkItem workItem)
    {
        var actionBuilder = _actionBuilderService.BuildAction(workItem.ActionType);
        var responseItem = CreateResponseItem(workItem.WorkItemId);
        workItem = actionBuilder.AddUrlAndHttpMethod(workItem);
        workItem = actionBuilder.AddWorkItemReturnResponse(workItem, responseItem);
        return workItem;
    }

    private ResponseItem CreateResponseItem(int workItemId)
    {
        var dispatcherReturnResponse = new DispatcherReturnResponse
        {
            WorkItemId = workItemId
        };
        var serializeDispatcherReturnResponse = JsonConvert.SerializeObject(dispatcherReturnResponse);

        var newReturnItem = new ResponseItem
        {
            ResponsePayload = serializeDispatcherReturnResponse,
            ReturnQueueConnectionConfig = new QueueConnectionConfig()
            {
                Url = _connectionConfiguration.HostUrl,
                Username = _connectionConfiguration.UserName,
                Password = _connectionConfiguration.Password
            },
            ReturnQueueConsumerConfig = new QueueConsumerConfig()
            {
                ExchangeName = _completionReceiveEndpoint.ReceiveEndpoint
            }
        };

        return newReturnItem;
    }
}