using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Microsoft.Xna.Framework.Graphics;
using System.Xml;

/// <summary>
/// Scope of all ScreenObjects in the game, includes Dialogue, ImageDisplay, TextDisplay
/// </summary>
namespace DW.UI.ScreenObjects
{
    /// <summary>
    /// Used to run dialogues in the game, inheirits from HUD
    /// </summary>
    public class Dialogue : HUD
    {
        private int displayLength = 0;
        List<TriggerCondition> triggerList = new List<TriggerCondition>();
        string speaker, message;
        /// <summary>
        /// Holds the triggerConditions, used for the EventSystem (not included)
        /// </summary>
        public struct TriggerCondition
        {
            public string name;
            public object condition;

            public TriggerCondition(string n, object c)
            {
                name = n;
                condition = c;
            }
        }
        /// <summary>
        /// Constructor for Dialogue, takes an XML node and reads in the dialogues
        /// </summary>
        /// <param name="xmlNode">XMLNode "Triggers", see text.xml for example</param>
        public Dialogue(XmlNode xmlNode )
        {
            foreach (XmlNode node in xmlNode)
            {
                if (node.Name == "Triggers")
                {
                    for (int x = 0; x < node.Attributes.Count; x++)
                    {
                        TriggerCondition tc = new TriggerCondition(node.Attributes[x].Name, node.Attributes[x].Value);
                        triggerList.Add(tc);
                    }
                }
                if (node.Name == "Speaker")
                {
                    speaker = node.InnerText;
                }
                if (node.Name == "Message")
                {
                    message = node.InnerText;
                }
                if (node.Name == "TimeLimit")
                {
                    displayLength = int.Parse(node.InnerText);
                }
            }
        }
        /// <summary>
        /// Removes dialogue once time limit expires
        /// </summary>
        public void UpdateDialogue()
        {
            //Remove dialogue once the limit has passed
            if (imageDisplays[getHUDIndex("dialogueBox")].stopWatch.ElapsedMilliseconds >= displayLength)
            {
                RemoveDialog();
                imageDisplays[getHUDIndex("dialogueBox")].stopWatch.Reset();
                displayLength = 0;
            }
        }
        /// <summary>
        /// Inits the dialogue control system
        /// </summary>
        public void InitializeDialogControl()
        {
            try
            {
                imageDisplays[getHUDIndex("dialogueBox")].stopWatch.Reset();
            }
            catch (Exception ex) { Console.WriteLine("HUD::InitializeDialogControl - No Timer Dialog Loaded"); }
        }
        /// <summary>
        /// Shows the dialogue
        /// </summary>
        /// <param name="backgroundImage">Which image to post in the background</param>
        /// <param name="speaker">Who is talking</param>
        /// <param name="message">What the message is</param>
        public void ShowDialog(Texture2D backgroundImage, string speaker, string message)
        {
            imageDisplays[getHUDIndex("dialogueBox")].visible = true;

            textDisplays[getHUDIndex("speakerText")].text = speaker;
            textDisplays[getHUDIndex("speakerText")].visible = true;

            textDisplays[getHUDIndex("dialogueText")].text = message;
            textDisplays[getHUDIndex("dialogueText")].visible = true;
        }
        /// <summary>
        /// Removes the dialogue from the HUD
        /// </summary>
        public void RemoveDialog()
        {
            imageDisplays[getHUDIndex("dialogueBox")].visible = false;

            textDisplays[getHUDIndex("dialogueBox")].text = "ERROR";
            textDisplays[getHUDIndex("speakerText")].visible = false;
            textDisplays[getHUDIndex("speakerText")].color = Color.White;

            textDisplays[getHUDIndex("dialogueText")].text = "YOU SHOULDN'T EVER SEE THIS";
            textDisplays[getHUDIndex("dialogueText")].visible = false;
            textDisplays[getHUDIndex("dialogueText")].color = Color.White;

        }
        /// <summary>
        /// Displays the dialogue on the HUD
        /// </summary>
        /// <param name="backgroundImage">Which image to post in the background</param>
        /// <param name="speaker">Who is talking</param>
        /// <param name="message">What the message is</param>
        /// <param name="limitMilli">Time limit to display message</param>
        public void DisplayDialog(Texture2D backgroundImage, string speaker, string message, int limitMilli)
        {
            displayLength = limitMilli;

            if (!imageDisplays[getHUDIndex("dialogueBox")].stopWatch.IsRunning)
            {
                displayLength = limitMilli;
                imageDisplays[getHUDIndex("dialogueBox")].stopWatch.Start();
            }
            else
            {
                displayLength = limitMilli;
                imageDisplays[getHUDIndex("dialogueBox")].stopWatch.Reset();
            }

            ShowDialog(backgroundImage, speaker, message);

        }
    }
}