using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Tango.BL.Entities;
using Tango.BL.Enumerations;
using Tango.Integration.ExternalBridge;
using Tango.PMR.Diagnostics;

namespace Tango.PPC.Common.EventLogging
{
    /// <summary>
    /// Represents a database events logger.
    /// </summary>
    public interface IEventLogger : IExternalBridgeRequestHandler
    {
        /// <summary>
        /// Occurs when a new machine event has been received.
        /// </summary>
        event EventHandler<MachinesEvent> EventReceived;

        /// <summary>
        /// Occurs when a machine event has been resolved.
        /// </summary>
        event EventHandler<MachinesEvent> EventResolved;

        /// <summary>
        /// Logs the specified machine event.
        /// </summary>
        /// <param name="machineEvent">The machine event.</param>
        void Log(MachinesEvent machineEvent);

        /// <summary>
        /// Logs the specified event type.
        /// </summary>
        /// <param name="eventType">Type of the event.</param>
        /// <param name="message">The message.</param>
        void Log(EventTypes eventType, String message, EventTypes? relatedEventType = null);

        /// <summary>
        /// Logs the specified hardware event.
        /// </summary>
        /// <param name="hardwareEvent">The hardware event.</param>
        void Log(Event hardwareEvent);

        /// <summary>
        /// Logs the specified exception using the <see cref="EventTypes.ApplicationException"/>.
        /// </summary>
        /// <param name="exception">The exception.</param>
        void Log(Exception exception);

        /// <summary>
        /// Logs the specified exception using the <see cref="EventTypes.ApplicationException"/>.
        /// </summary>
        /// <param name="exception">The exception.</param>
        void Log(Exception exception, String description);

        /// <summary>
        /// Logs the specified message using the <see cref="EventTypes.ApplicationInformation"/>.
        /// </summary>
        /// <param name="message">The message.</param>
        void Log(String message);

        /// <summary>
        /// Immediately saves all pending events to database.
        /// </summary>
        void FlushAll();
    }
}