using MaterialDesignThemes.Wpf;
using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.ComponentModel;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Media;
using Tango.Core.Commands;
using Tango.SharedUI;

namespace Tango.FSE.Common.Notifications
{
    /// <summary>
    /// Represents the PPC user notification provider responsible for displaying information, alerts and dialogs to the user.
    /// </summary>
    public interface INotificationProvider : INotifyApplicationReady
    {
        /// <summary>
        /// Gets the collection of notification items.
        /// </summary>
        ObservableCollection<NotificationItem> NotificationItems { get; }

        /// <summary>
        /// Gets the collection of snack bar items.
        /// </summary>
        ObservableCollection<SnackbarItem> SnackbarItems { get; }

        /// <summary>
        /// Gets or sets a value indicating whether this instance has snack bar items.
        /// </summary>
        bool HasSnackbarItems { get; }

        /// <summary>
        /// Gets or sets a value indicating whether to delay the snackbar items closing timeout.
        /// </summary>
        bool HoldSnackbarItemsTimeout { get; set; }

        /// <summary>
        /// Gets the notification items view.
        /// </summary>
        ICollectionView NotificationItemsView { get; }

        /// <summary>
        /// Gets the collection of task items.
        /// </summary>
        ObservableCollection<TaskItem> TaskItems { get; }

        /// <summary>
        /// Gets a value indicating whether there are any task items pending.
        /// </summary>
        bool HasTaskItems { get; }

        /// <summary>
        /// Gets the current application bar item.
        /// </summary>
        AppBarItem CurrentAppBarItem { get; }

        /// <summary>
        /// Gets a value indicating whether this instance has application bar item.
        /// </summary>
        bool HasAppBarItem { get; }

        /// <summary>
        /// Gets a value indicating whether this instance has notification items.
        /// </summary>
        bool HasNotificationItems { get; }

        /// <summary>
        /// Gets the current message box.
        /// </summary>
        MessageBoxVM CurrentMessageBox { get; }

        /// <summary>
        /// Gets a value indicating whether this instance has message box.
        /// </summary>
        bool HasMessageBox { get; }

        /// <summary>
        /// Gets the current input box.
        /// </summary>
        InputBoxVM CurrentInputBox { get; }

        /// <summary>
        /// Gets a value indicating whether this instance has input box.
        /// </summary>
        bool HasInputBox { get; }

        /// <summary>
        /// Gets the current dialog.
        /// </summary>
        FrameworkElement CurrentDialog { get; }

        /// <summary>
        /// Gets the current app button.
        /// </summary>
        AppButton CurrentAppButton { get; }

        /// <summary>
        /// Gets a value indicating whether this instance has a dialog.
        /// </summary>
        bool HasDialog { get; }

        /// <summary>
        /// Shows an information message box.
        /// </summary>
        /// <param name="message">The message.</param>
        Task ShowInfo(String message);

        /// <summary>
        /// Shows warning message box.
        /// </summary>
        /// <param name="message">The message.</param>
        Task ShowWarning(String message);

        /// <summary>
        /// Shows an error message box.
        /// </summary>
        /// <param name="message">The message.</param>
        Task ShowError(String message);

        /// <summary>
        /// Shows a success message box.
        /// </summary>
        /// <param name="message">The message.</param>
        Task ShowSuccess(String message);

        /// <summary>
        /// Shows an input box.
        /// </summary>
        /// <param name="title">The title.</param>
        /// <param name="message">The message.</param>
        /// <param name="icon">The icon.</param>
        /// <param name="defaultInput">The default input.</param>
        /// <param name="inputHint">The input hint.</param>
        /// <param name="okText">The ok text.</param>
        /// <param name="cancelText">The cancel text.</param>
        /// <returns></returns>
        Task<InputBoxResult> ShowInputBox(String title, String message, PackIconKind icon = PackIconKind.InfoOutline, String defaultInput = null, String inputHint = null, int? maxChars = null, String okText = null, String cancelText = null, Func<String, String> validationFunc = null);

        /// <summary>
        /// Shows a question message box.
        /// </summary>
        /// <param name="message">The message.</param>
        Task<bool> ShowQuestion(String message, String okText = null, String cancelText = null);

        /// <summary>
        /// Shows a warning question message box.
        /// </summary>
        /// <param name="message">The message.</param>
        Task<bool> ShowWarningQuestion(String message, String okText = null, String cancelText = null);

        /// <summary>
        /// Inserts the notification item to the bottom of the notifications collection.
        /// </summary>
        /// <param name="item">The item.</param>
        NotificationItem PushNotification(NotificationItem item);

        /// <summary>
        /// Pushes the notification.
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <returns></returns>
        NotificationItem PushNotification<T>() where T : NotificationItem;

        /// <summary>
        /// Displays the specified dialog in a modal design.
        /// </summary>
        /// <typeparam name="VM"></typeparam>
        /// <param name="datacontext">The data context.</param>
        /// <param name="view">The view.</param>
        /// <returns></returns>
        Task<VM> ShowDialog<VM>(VM datacontext, FrameworkElement view) where VM : DialogViewVM;

        /// <summary>
        /// Displays the specified dialog in a modal design.
        /// The notification provider will try to locate the view automatically using conventions.
        /// </summary>
        /// <typeparam name="VM"></typeparam>
        /// <param name="datacontext">The data context.</param>
        /// <returns></returns>        
        Task<VM> ShowDialog<VM>(VM datacontext) where VM : DialogViewVM;

        /// <summary>
        /// Displays the specified dialog in a modal design.
        /// The data context instance will be automatically created.
        /// The notification provider will try to locate the view automatically using conventions.
        /// </summary>
        /// <typeparam name="VM"></typeparam>
        /// <returns></returns>
        Task<VM> ShowDialog<VM>() where VM : DialogViewVM;

        /// <summary>
        /// Removed the specified notification item.
        /// </summary>
        /// <param name="item">The item.</param>
        void PopNotification(NotificationItem item);

        /// <summary>
        /// Gets a value indicating whether this instance is in global busy state.
        /// </summary>
        bool IsInGlobalBusyState { get; }

        /// <summary>
        /// Sets the global busy message.
        /// </summary>
        /// <param name="message">The message.</param>
        void SetGlobalBusyMessage(String message);

        /// <summary>
        /// Releases the global busy message.
        /// </summary>
        void ReleaseGlobalBusyMessage();

        /// <summary>
        /// Gets the current global busy message.
        /// </summary>
        String GlobalBusyMessage { get; }

        /// <summary>
        /// Pushes the application bar item.
        /// </summary>
        /// <param name="appBarItem">The application bar item.</param>
        /// <returns></returns>
        AppBarItem PushAppBarItem(AppBarItem appBarItem);

        /// <summary>
        /// Pushes the application bar item.
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <returns></returns>
        AppBarItem PushAppBarItem<T>() where T : AppBarItem;

        /// <summary>
        /// Pops the application bar item.
        /// </summary>
        /// <param name="appBarItem">The application bar item.</param>
        void PopAppBarItem(AppBarItem appBarItem);

        /// <summary>
        /// Pushes the task item.
        /// </summary>
        /// <param name="taskBarItem">The task bar item.</param>
        /// <returns></returns>
        TaskItem PushTaskItem(TaskItem taskBarItem);

        /// <summary>
        /// Pushes the task item.
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <returns></returns>
        TaskItem PushTaskItem<T>() where T : TaskItem;

        /// <summary>
        /// Pushes the task item with the specified message.
        /// </summary>
        /// <param name="message">The message.</param>
        /// <param name="canCancel">Indicates whether the cancel button will be enabled.</param>
        /// <param name="cancelAction">Specify the action to execute when cancel button is pressed.</param>
        /// <returns></returns>
        TaskItem PushTaskItem(String message, bool canCancel = false, Action cancelAction = null);

        /// <summary>
        /// Pops the task item.
        /// </summary>
        /// <param name="TaskBarItem">The task bar item.</param>
        void PopTaskItem(TaskItem taskBarItem);

        /// <summary>
        /// Pushes the snack bar item.
        /// </summary>
        /// <param name="snackbarItem">The snack bar item.</param>
        /// <returns></returns>
        SnackbarItem PushSnackbarItem(SnackbarItem snackbarItem);

        /// <summary>
        /// Pushes the snack bar item.
        /// </summary>
        /// <param name="type">The type.</param>
        /// <param name="title">The title.</param>
        /// <param name="canClose">if set to <c>true</c> [can close].</param>
        /// <param name="message">The message.</param>
        /// <param name="timeout">The timeout.</param>
        /// <param name="closeAction">The close action.</param>
        /// <param name="pressAction">The press action.</param>
        /// <returns></returns>
        SnackbarItem PushSnackbarItem(MessageType type, String title, bool canClose, String message = null, TimeSpan? timeout = null, Action closeAction = null, Action pressAction = null);

        /// <summary>
        /// Display a new error SnackBar. Pressing the snack bar will display the issue reporting dialog.
        /// </summary>
        /// <param name="exception">The exception.</param>
        /// <param name="title">The title.</param>
        /// <param name="message">The message.</param>
        /// <param name="messageType">The message type.</param>
        /// <returns></returns>
        SnackbarItem PushErrorReportingSnackbar(Exception exception, String title, String message, MessageType messageType = MessageType.BugReport);

        /// <summary>
        /// Displays a indeterminate progress Snackbar. Should use <see cref="SnackbarItem.ProgressCompleted(string, TimeSpan?)"/> and <see cref="SnackbarItem.ProgressFailed(string, TimeSpan?)"/>.
        /// </summary>
        /// <param name="title">The title.</param>
        /// <param name="message">The message.</param>
        /// <returns></returns>
        SnackbarItem PushProgressSnackbar(String title, String message);

        /// <summary>
        /// Pops the snack bar item.
        /// </summary>
        /// <param name="snackbarItem">The snack bar item.</param>
        void PopSnackbarItem(SnackbarItem snackbarItem);

        /// <summary>
        /// Gets or sets a value indicating whether to allow notifications visibility.
        /// </summary>
        bool NotificationsVisible { get; set; }

        /// <summary>
        /// Pushes the app button.
        /// </summary>
        /// <param name="appButton">The app button.</param>
        void PushAppButton(AppButton appButton);

        /// <summary>
        /// Pops the app button.
        /// </summary>
        /// <param name="appButton">The app button.</param>
        void PopAppButton(AppButton appButton);
    }
}