using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using Tango.BL.Entities;

namespace Tango.FSE.Common.FSEApplication
{
    /// <summary>
    /// Represents the application manager.
    /// </summary>
    public interface IFSEApplicationManager
    {
        /// <summary>
        /// Occurs when the application has started.
        /// </summary>
        event EventHandler ApplicationStarted;

        /// <summary>
        /// Occurs when the application is ready and all modules are views are loaded.
        /// </summary>
        event EventHandler ApplicationReady;

        /// <summary>
        /// Occurs when the main window content has been rendered.
        /// </summary>
        event EventHandler ContentRendered;

        /// <summary>
        /// Occurs when all PPC modules are ready and initialized.
        /// </summary>
        event EventHandler ModulesInitialized;

        /// <summary>
        /// Occurs when the application has encountered an error when initializing.
        /// </summary>
        event EventHandler<Exception> ApplicationInitializationError;

        /// <summary>
        /// Gets a value indicating whether the application is past the <see cref="ApplicationReady"/> event.
        /// </summary>
        bool IsReady { get; }

        /// <summary>
        /// Gets a value indicating whether the application is shutting down.
        /// </summary>
        bool IsShuttingDown { get; }

        /// <summary>
        /// Gets a value indicating whether an update has occurred before the application started.
        /// </summary>
        bool IsAfterUpdate { get;  }

        /// <summary>
        /// Gets the application startup arguments.
        /// </summary>
        List<String> StartupArgs { get; }

        /// <summary>
        /// Shutdown the application.
        /// </summary>
        void ShutDown();

        /// <summary>
        /// Restarts the application.
        /// </summary>
        void Restart();

        /// <summary>
        /// Activates the main window if it's not in focus.
        /// </summary>
        void ActivateMainWindow();

        /// <summary>
        /// Gets the application version.
        /// </summary>
        Version Version { get; }

        /// <summary>
        /// Gets the application build date.
        /// </summary>
        String BuildDate { get; }

        /// <summary>
        /// Gets the application startup date.
        /// </summary>
        DateTime StartUpDate { get; }

        /// <summary>
        /// Gets or sets the application folder.
        /// </summary>
        String StartPath { get; }

        /// <summary>
        /// Gets a value indicating whether the application is currently debugging machine service via local host.
        /// </summary>
        bool IsWebDebugMode { get; }

        /// <summary>
        /// Gets or sets a value indicating whether to display the main window controls.
        /// </summary>
        bool DisplayWindowControls { get; set; }

        /// <summary>
        /// Gets or sets the state of the application main window.
        /// </summary>
        WindowState WindowState { get; set; }

        /// <summary>
        /// Gets a value indicating whether the application is currently running in demo mode.
        /// </summary>
        bool DemoMode { get; }
    }
}