using System.Collections.Generic;
using LCU.Api.Internal.DispatcherLib.Repositories;
namespace LCU.Api.Internal.Dispatcher.Services;

public class ExecutionMessageService : IExecutionMessageService
{
    private readonly IUnitOfWork _unitOfWork;
    private readonly IExecutionMessageRepository _executionMessageRepository;    

    public ExecutionMessageService(IUnitOfWork unitOfWork,
                                   IExecutionMessageRepository executionMessageRepository)
    {
        _unitOfWork = unitOfWork;
        _executionMessageRepository = executionMessageRepository;        
    }

    public async Task SaveExecutionMessages(List<ExecutionMessage> executionMessageList)
    {
        try
        {
            if (executionMessageList == null || !executionMessageList.Any())
            {
                return;
            }

            foreach (var message in executionMessageList)
            {
                if (string.IsNullOrWhiteSpace(message.Message))
                {
                    continue;
                }

                var savedExecutionMessage = await SaveAsync(message);
                ArgumentNullException.ThrowIfNull(savedExecutionMessage);
            }
        }
        catch (Exception exception)
        {
            Log.Error(exception, "During SaveExecutionMessages there was an error. ");
            throw new ServiceException($"During SaveExecutionMessages there was an error. " +
                                       "ExceptionMessage: {exception.Message}");
        }
    }

    public async Task SaveExecutionMessages(int workItemExecutionId, List<string> messageList)
    {
        try
        {
            if (messageList == null || !messageList.Any())
            {
                return;
            }

            foreach (var message in messageList)
            {
                if (string.IsNullOrWhiteSpace(message))
                {
                    continue;
                }

                var executionMessage = new ExecutionMessage(workItemExecutionId, message);
                var savedExecutionMessage = await SaveAsync(executionMessage);
                ArgumentNullException.ThrowIfNull(savedExecutionMessage);
            }
        }
        catch (Exception exception)
        {
            Log.Error(exception, $"During SaveExecutionMessages there was an error. " +
                                 $"WorkItemExecutionId: {workItemExecutionId}");
            throw new ServiceException($"During SaveExecutionMessages there was an error. " +
                                       $"WorkItemExecutionId: {workItemExecutionId}, " +
                                       $"ExceptionMessage: {exception.Message}");
        }
    }

    public async Task<ExecutionMessage> SaveAsync(ExecutionMessage workItemExecution)
    {
        try
        {
            var result = await _executionMessageRepository.AddAsync(workItemExecution);
            await _unitOfWork.CompleteAsync();
            return result;
        }
        catch (Exception exception)
        {
            Log.Error(exception, "Failure saving dispatcher Execution Messages", workItemExecution);
            throw new ServiceException($"Failure saving dispatcher Execution Messages. ExceptionMessage: { exception.Message }");
        }
    }
}