/*
 *
 *	Adventure Creator
 *	by Chris Burton, 2013-2014
 *	
 *	"MenuJournal.cs"
 * 
 *	This MenuElement provides an array of labels, used to make a book.
 * 
 */

using UnityEngine;
using System.Collections.Generic;
using AC;

#if UNITY_EDITOR
using UnityEditor;
#endif

public class MenuJournal : MenuElement
{
	
	public List<JournalPage> pages;
	public int numPages = 1;
	public int showPage = 1;
	public TextAnchor anchor;
	public bool doOutline;

	
	public override void Declare ()
	{
		pages = new List<JournalPage>();
		pages.Add (new JournalPage ());
		numPages = 1;
		showPage = 1;
		isVisible = true;
		isClickable = false;
		numSlots = 1;
		anchor = TextAnchor.MiddleCenter;
		SetSize (new Vector2 (10f, 5f));

		base.Declare ();
	}
	
	
	public void CopyJournal (MenuJournal _element)
	{
		pages = new List<JournalPage>();
		foreach (JournalPage page in _element.pages)
		{
			pages.Add (page);
		}

		numPages = _element.numPages;
		showPage = 1;
		anchor = _element.anchor;
		doOutline = _element.doOutline;

		base.Copy (_element);
	}
	
	
	#if UNITY_EDITOR
	
	public override void ShowGUI ()
	{
		EditorGUILayout.BeginVertical ("Button");
		numPages = EditorGUILayout.IntField ("Number of starting pages:", numPages);
		if (numPages > 0)
		{
			showPage = EditorGUILayout.IntSlider ("Preview page:", showPage, 1, numPages);

			if (numPages != pages.Count)
			{
				if (numPages > pages.Count)
				{
					while (numPages > pages.Count)
					{
						pages.Add (new JournalPage ());
					}
				}
				else
				{
					pages.RemoveRange (numPages, pages.Count - numPages);
				}
			}

			if (showPage > 0 && pages.Count >= showPage-1)
			{
				EditorGUILayout.LabelField ("Page " + showPage + " text:");
				pages[showPage-1].text = EditorGUILayout.TextArea (pages[showPage-1].text);

				if (pages[showPage-1].text.Contains ("*"))
				{
					EditorGUILayout.HelpBox ("Errors will occur if pages contain '*' characters.", MessageType.Error);
				}
				else if (pages[showPage-1].text.Contains ("|"))
				{
					EditorGUILayout.HelpBox ("Errors will occur if pages contain '|' characters.", MessageType.Error);
				}
			}
		}
		else
		{
			numPages = 1;
		}

		anchor = (TextAnchor) EditorGUILayout.EnumPopup ("Text alignment:", anchor);
		doOutline = EditorGUILayout.Toggle ("Outline text?", doOutline);
		EditorGUILayout.EndVertical ();
		
		base.ShowGUI ();
	}
	
	#endif
	
	
	public override void Display (GUIStyle _style, int _slot, float zoom)
	{
		base.Display (_style, _slot, zoom);
		
		_style.wordWrap = true;
		_style.alignment = anchor;
		if (zoom < 1f)
		{
			_style.fontSize = (int) ((float) _style.fontSize * zoom);
		}

		if (pages.Count >= showPage)
		{
			string newLabel = TranslatePage (pages[showPage - 1]);

			if (doOutline)
			{
				AdvGame.DrawTextOutline (ZoomRect (relativeRect, zoom), newLabel, _style, Color.black, _style.normal.textColor, 2);
			}
			else
			{
				GUI.Label (ZoomRect (relativeRect, zoom), newLabel, _style);
			}
		}
	}


	public override string GetLabel (int slot)
	{
		return TranslatePage (pages[showPage - 1]);
	}


	public void Shift (AC_ShiftInventory shiftType, bool doLoop)
	{
		if (shiftType == AC_ShiftInventory.ShiftRight)
		{
			if (pages.Count > showPage)
			{
				showPage ++;
			}
			else if (doLoop)
			{
				showPage = 1;
			}
		}
		else if (shiftType == AC_ShiftInventory.ShiftLeft)
		{
			if (showPage > 1)
			{
				showPage --;
			}
			else if (doLoop)
			{
				showPage = pages.Count;
			}
		}
	}


	private string TranslatePage (JournalPage page)
	{
		if (Options.GetLanguage () > 0 && page.lineID > -1)
		{
			return (SpeechManager.GetTranslation (page.lineID, Options.GetLanguage ()));
		}
		else
		{
			return (page.text);
		}
	}
	
	
	protected override void AutoSize ()
	{
		if (showPage > 0 && pages.Count >= showPage-1)
		{
			if (pages[showPage-1].text == "" && backgroundTexture != null)
			{
				GUIContent content = new GUIContent (backgroundTexture);
				AutoSize (content);
			}
			else
			{
				GUIContent content = new GUIContent (pages[showPage-1].text);
				AutoSize (content);
			}
		
		}
	}
	
}


[System.Serializable]
public class JournalPage
{

	public int lineID = -1;
	public string text = "";


	public JournalPage ()
	{ }


	public JournalPage (int _lineID, string _text)
	{
		lineID = _lineID;
		text = _text;
	}

}