using System;
using System.Threading.Tasks;

namespace TINK.View
{
    public interface IViewService
    {
        /// <summary> Displays alert message. </summary>
        /// <param name="title">Title of message.</param>
        /// <param name="message">Message to display.</param>
        /// <param name="cancel">Text of button.</param>
        Task DisplayAlert(
            string title, 
            string message, 
            string cancel);

        /// <summary> Displays alert message. </summary>
        /// <param name="title">Title of message.</param>
        /// <param name="message">Message to display.</param>
        /// <param name="details">Detailed error description.</param>
        /// <param name="cancel">Text of button.</param>
        Task DisplayAdvancedAlert(
            string title, 
            string message, 
            string details, 
            string cancel);

        /// <summary> Displays alert message. </summary>
        /// <param name="p_strTitle">Title of message.</param>
        /// <param name="p_strMessage">Message to display.</param>
        /// <param name="p_strAccept">Text of accept button.</param>
        /// <param name="p_strCancel">Text of button.</param>
        /// <returns>True if user pressed accept.</returns>
        Task<bool> DisplayAlert(string p_strTitle, string p_strMessage, string p_strAccept, string p_strCancel);

        /// <summary> Displays an action sheet. </summary>
        /// <param name="title">Title of message.</param>
        /// <param name="p_strMessage">Message to display.</param>
        /// <param name="cancel">Text of button.</param>
        /// <param name="destruction"></param>
        /// <param name="buttons">Buttons holding options to select.</param>
        /// <returns>T</returns>
        Task<string> DisplayActionSheet(string title, string cancel, string destruction, params string[] buttons);

        /// <summary> Show a page.</summary>
        /// <param name="type">Type of page to show.</param>
        /// <param name="title">Title of page to show.</param>
        void ShowPage(ViewTypes type, string title = null);

        /// <summary> Pushes a page onto the stack. </summary>
        /// <param name="typeOfPage">Page to display.</param>
        Task PushAsync(ViewTypes typeOfPage);

        /// <summary> Pushes a page onto the modal stack. </summary>
        /// <param name="typeOfPage">Page to display.</param>
        Task PushModalAsync(ViewTypes typeOfPage);

        /// <summary> Pushes a page onto the modal stack. </summary>
        Task PopModalAsync();

        Task<IUserFeedback> DisplayUserFeedbackPopup();

        /// <summary>
        /// Feedback given by user when returning bike.
        /// </summary>
        public interface IUserFeedback
        {
            /// <summary>
            /// Holds whether bike is broken or not.
            /// </summary>
            bool IsBikeBroken { get; set; }

            /// <summary>
            /// Holds either 
            /// - general feedback
            /// - error description of broken bike 
            /// or both.
            /// </summary>
            string Message { get; set; }
        }
    }
}