using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Tango.BL;
using Tango.BL.Entities;
using Tango.BL.Enumerations;
using Tango.Core;
using Tango.Core.DI;
using Tango.Integration.ExternalBridge;
using Tango.Integration.Operation;
using Tango.MachineStudio.Common.StudioApplication;

namespace Tango.MachineStudio.Common.JobRunsLogging
{
    public class DefaultJobRunsLogger : ExtendedObject, IJobRunsLogger
    {
        private ObservablesContext _context;
        private DateTime _start_date;
        private Job _job;
        private IStudioApplicationManager applicationManager;

        public void Init(IStudioApplicationManager appManager)
        {
            applicationManager = appManager;
            _context = ObservablesContext.CreateDefault();
            applicationManager.ConnectedMachineChanged += ApplicationManager_ConnectedMachineChanged;
        }

        private void ApplicationManager_ConnectedMachineChanged(object sender, IExternalBridgeClient machine)
        {
            if (machine != null)
            {
                machine.PrintingStarted -= Machine_PrintingStarted;
                machine.PrintingStarted += Machine_PrintingStarted;
                machine.PrintingCompleted -= Machine_PrintingCompleted;
                machine.PrintingCompleted += Machine_PrintingCompleted;
                machine.PrintingAborted -= Machine_PrintingAborted;
                machine.PrintingAborted += Machine_PrintingAborted;
                machine.PrintingFailed -= Machine_PrintingFailed;
                machine.PrintingFailed += Machine_PrintingFailed;
            }
        }

        private void Machine_PrintingFailed(object sender, PrintingFailedEventArgs e)
        {
            if (e.Job.Guid == _job.Guid)
            {
                Task.Factory.StartNew(() =>
                {
                    _context.JobRuns.Add(new JobRun()
                    {
                        StartDate = _start_date,
                        EndDate = DateTime.UtcNow,
                        JobGuid = _job.Guid,
                        JobRunStatus = JobRunStatus.Failed,
                        EndPosition = e.JobHandler.Status.Progress,
                        FailedMessage = e.Exception.Message,
                    });

                    _context.SaveChanges();
                });
            }
        }

        private void Machine_PrintingAborted(object sender, PrintingEventArgs e)
        {
            if (e.Job.Guid == _job.Guid)
            {
                Task.Factory.StartNew(() =>
                {
                    _context.JobRuns.Add(new JobRun()
                    {
                        StartDate = _start_date,
                        EndDate = DateTime.UtcNow,
                        JobGuid = _job.Guid,
                        EndPosition = e.JobHandler.Status.Progress,
                        JobRunStatus = JobRunStatus.Aborted,
                    });

                    _context.SaveChanges();
                });
            }
        }

        private void Machine_PrintingCompleted(object sender, PrintingEventArgs e)
        {
            if (e.Job.Guid == _job.Guid)
            {
                Task.Factory.StartNew(() =>
                {
                    _context.JobRuns.Add(new JobRun()
                    {
                        StartDate = _start_date,
                        EndDate = DateTime.UtcNow,
                        JobGuid = _job.Guid,
                        EndPosition = e.JobHandler.Status.Progress,
                        JobRunStatus = JobRunStatus.Completed,
                    });

                    _context.SaveChanges();
                });
            }
        }

        private void Machine_PrintingStarted(object sender, PrintingEventArgs e)
        {
            _job = e.Job;
            _start_date = DateTime.UtcNow;
        }
    }
}