/*
 *
 *	Adventure Creator
 *	by Chris Burton, 2013-2014
 *	
 *	"CursorManager.cs"
 * 
 *	This script handles the "Cursor" tab of the main wizard.
 *	It is used to define cursor icons and the method in which
 *	interactions are triggered by the player.
 * 
 */

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

#if UNITY_EDITOR
using UnityEditor;
#endif

[System.Serializable]
public class CursorManager : ScriptableObject
{

	public CursorDisplay cursorDisplay = CursorDisplay.Always;
	public bool allowMainCursor = false;

	public bool addHotspotPrefix = false;
	public bool allowInteractionCursor = false;
	public bool allowInteractionCursorForInventory = false;
	public bool cycleCursors = false;
	public bool leftClickExamine = false;
	
	public float normalCursorSize = 0.015f;
	public float mouseOverCursorSize = 0.015f;
	public float iconCursorSize = 0.04f;
	public float inventoryCursorSize = 0.06f;

	public Texture2D waitTexture = null;
	public Texture2D pointerTexture = null;
	public Texture2D walkTexture = null;
	public Texture2D mouseOverTexture = null;
	public InventoryHandling inventoryHandling = InventoryHandling.ChangeCursor;
	public HotspotPrefix hotspotPrefix1 = new HotspotPrefix ("Use");
	public HotspotPrefix hotspotPrefix2 = new HotspotPrefix ("on");

	public List<CursorIcon> cursorIcons = new List<CursorIcon>();
	public LookUseCursorAction lookUseCursorAction = LookUseCursorAction.DisplayBothSideBySide;
	public int lookCursor_ID = 0;
	public int lookCursor_int = 0;
	
	
	#if UNITY_EDITOR
	
	private static GUIContent
		insertContent = new GUIContent("+", "Insert variable"),
		deleteContent = new GUIContent("-", "Delete variable");

	private static GUILayoutOption
		buttonWidth = GUILayout.MaxWidth (20f),
		labelWidth = GUILayout.MaxWidth (50f);
	
	
	public void ShowGUI ()
	{
		SettingsManager settingsManager = AdvGame.GetReferences().settingsManager;
		
		EditorGUILayout.BeginVertical ("Button");
			EditorGUILayout.LabelField ("Main cursor", EditorStyles.boldLabel);
			cursorDisplay = (CursorDisplay) EditorGUILayout.EnumPopup ("Display cursor:", cursorDisplay);
			allowMainCursor = EditorGUILayout.Toggle ("Replace mouse cursor?", allowMainCursor);
			if (allowMainCursor || (settingsManager && settingsManager.inputMethod == InputMethod.KeyboardOrController))
			{
				pointerTexture = (Texture2D) EditorGUILayout.ObjectField ("Main cursor texture:", pointerTexture, typeof (Texture2D), false);
				walkTexture = (Texture2D) EditorGUILayout.ObjectField ("Walk cursor (optional):", walkTexture, typeof (Texture2D), false);
				normalCursorSize = EditorGUILayout.FloatField ("Main cursor size:", normalCursorSize);
			}
		EditorGUILayout.EndVertical ();
		
		EditorGUILayout.Space ();

		EditorGUILayout.BeginVertical ("Button");
			EditorGUILayout.LabelField ("Hotspot settings", EditorStyles.boldLabel);
			addHotspotPrefix = EditorGUILayout.Toggle ("Prefix cursor labels?", addHotspotPrefix);
			if (settingsManager && settingsManager.interactionMethod == AC_InteractionMethod.ChooseHotspotThenInteraction)
			{
				mouseOverTexture = (Texture2D) EditorGUILayout.ObjectField ("Mouseover cursor texture:", mouseOverTexture, typeof (Texture2D), false);
				mouseOverCursorSize = EditorGUILayout.FloatField ("Main cursor size:", mouseOverCursorSize);
			}
		EditorGUILayout.EndVertical ();

		EditorGUILayout.Space ();
		
		EditorGUILayout.BeginVertical ("Button");
			EditorGUILayout.LabelField ("Inventory cursor", EditorStyles.boldLabel);
			if (settingsManager && settingsManager.interactionMethod != AC_InteractionMethod.ChooseHotspotThenInteraction)
			{
				inventoryHandling = (InventoryHandling) EditorGUILayout.EnumPopup ("When inventory selected:", inventoryHandling);
				if (inventoryHandling == InventoryHandling.ChangeCursor || inventoryHandling == InventoryHandling.ChangeCursorAndHotspotLabel)
				{
					inventoryCursorSize = EditorGUILayout.FloatField ("Inventory cursor size:", inventoryCursorSize);
				}
			}
			EditorGUILayout.BeginHorizontal ();
				EditorGUILayout.LabelField ("Syntax:", GUILayout.Width (60f));
				hotspotPrefix1.label = EditorGUILayout.TextField (hotspotPrefix1.label, GUILayout.MaxWidth (80f));
				EditorGUILayout.LabelField ("(item)", GUILayout.MaxWidth (40f));

				hotspotPrefix2.label = EditorGUILayout.TextField (hotspotPrefix2.label, GUILayout.MaxWidth (80f));
				EditorGUILayout.LabelField ("(hotspot)", GUILayout.MaxWidth (55f));
			EditorGUILayout.EndHorizontal ();
		EditorGUILayout.EndVertical ();
		
		EditorGUILayout.Space ();
		
		EditorGUILayout.BeginVertical ("Button");
			EditorGUILayout.LabelField ("Interaction icons", EditorStyles.boldLabel);
			
			if (settingsManager == null || settingsManager.interactionMethod != AC_InteractionMethod.ChooseHotspotThenInteraction)
			{
				allowInteractionCursor = EditorGUILayout.BeginToggleGroup ("Change for interactions?", allowInteractionCursor);
					iconCursorSize = EditorGUILayout.FloatField ("Interaction icon size:", iconCursorSize);
					if (settingsManager && settingsManager.interactionMethod == AC_InteractionMethod.ChooseInteractionThenHotspot)
					{
						cycleCursors = EditorGUILayout.Toggle ("Cycle with right click?", cycleCursors);
					}
					if (settingsManager == null || settingsManager.interactionMethod == AC_InteractionMethod.ContextSensitive)
					{
						allowInteractionCursorForInventory = EditorGUILayout.Toggle ("Change for inventory?", allowInteractionCursorForInventory);
					}
				EditorGUILayout.EndToggleGroup ();
			}
			
			IconsGUI ();
		
			EditorGUILayout.Space ();
		
			if (settingsManager == null || settingsManager.interactionMethod == AC_InteractionMethod.ContextSensitive)
			{
				LookIconGUI ();
			}
		EditorGUILayout.EndVertical ();

		EditorGUILayout.BeginVertical ("Button");
			EditorGUILayout.LabelField ("Wait cursor", EditorStyles.boldLabel);
			waitTexture = (Texture2D) EditorGUILayout.ObjectField ("Wait cursor texture:", waitTexture, typeof (Texture2D), false);
		EditorGUILayout.EndVertical ();
		
		if (GUI.changed)
		{
			EditorUtility.SetDirty (this);
		}
	}
	
	
	private void IconsGUI ()
	{
		// List icons
		foreach (CursorIcon _cursorIcon in cursorIcons)
		{
			GUILayout.Box("", GUILayout.ExpandWidth(true), GUILayout.Height(1));
			EditorGUILayout.BeginHorizontal ();
				EditorGUILayout.LabelField ("Label:", labelWidth);
				_cursorIcon.label = EditorGUILayout.TextField (_cursorIcon.label, GUILayout.Width (80));
				EditorGUILayout.LabelField ("Texture:", labelWidth);
				_cursorIcon.texture = (Texture2D) EditorGUILayout.ObjectField (_cursorIcon.texture, typeof (Texture2D), false, GUILayout.Width (70), GUILayout.Height (70));
				
				if (GUILayout.Button (insertContent, EditorStyles.miniButtonLeft, buttonWidth))
				{
					Undo.RecordObject (this, "Add icon");
					int position = cursorIcons.IndexOf (_cursorIcon) + 1;
					cursorIcons.Insert (position, new CursorIcon (GetIDArray ()));
					break;
				}
				if (GUILayout.Button (deleteContent, EditorStyles.miniButtonRight, buttonWidth))
				{
					Undo.RecordObject (this, "Delete icon: " + _cursorIcon.label);
					cursorIcons.Remove (_cursorIcon);
					break;
				}
		
			EditorGUILayout.EndHorizontal ();
		}

		if (GUILayout.Button("Create new icon"))
		{
			Undo.RecordObject (this, "Add icon");
			cursorIcons.Add (new CursorIcon (GetIDArray ()));
		}
	}
	
	
	private void LookIconGUI ()
	{
		if (cursorIcons.Count > 0)
		{
			lookCursor_int = GetIntFromID (lookCursor_ID);
			lookCursor_int = EditorGUILayout.Popup ("Examine icon:", lookCursor_int, GetLabelsArray (lookCursor_int));
			lookCursor_ID = cursorIcons[lookCursor_int].id;

			EditorGUILayout.LabelField ("When Use and Examine interactions are both available:");
			lookUseCursorAction = (LookUseCursorAction) EditorGUILayout.EnumPopup (" ", lookUseCursorAction);

			EditorGUILayout.BeginHorizontal ();
			EditorGUILayout.LabelField ("Left-click to examine when no use interaction exists?", GUILayout.Width (300f));
			leftClickExamine = EditorGUILayout.Toggle (leftClickExamine);
			EditorGUILayout.EndHorizontal ();
		}
	}
	
	#endif
	
	
	public string[] GetLabelsArray (int requestedInt)
	{
		// Create a string List of the field's names (for the PopUp box)
		List<string> iconLabels = new List<string>();
		
		foreach (CursorIcon cursorIcon in cursorIcons)
		{
			iconLabels.Add (cursorIcon.label);
		}
	
		return (iconLabels.ToArray());
	}
	
	
	public string GetLabelFromID (int _ID)
	{
		foreach (CursorIcon cursorIcon in cursorIcons)
		{
			if (cursorIcon.id == _ID)
			{
				if (Options.GetLanguage () > 0)
				{
					return (SpeechManager.GetTranslation (cursorIcon.lineID, Options.GetLanguage ()) + " ");
				}
				else
				{
					return (cursorIcon.label + " ");
				}
			}
		}
		
		return ("");
	}
	
	
	public Texture2D GetTextureFromID (int _ID)
	{
		foreach (CursorIcon cursorIcon in cursorIcons)
		{
			if (cursorIcon.id == _ID)
			{
				return (cursorIcon.texture);
			}
		}
		
		return (null);
	}
	
	
	public int GetIntFromID (int _ID)
	{
		int i = 0;
		int requestedInt = -1;
		
		foreach (CursorIcon cursorIcon in cursorIcons)
		{
			if (cursorIcon.id == _ID)
			{
				requestedInt = i;
			}
			
			i++;
		}
		
		if (requestedInt == -1)
		{
			// Wasn't found (icon was deleted?), so revert to zero
			requestedInt = 0;
		}
	
		return (requestedInt);
	}
	
	
	private int[] GetIDArray ()
	{
		// Returns a list of id's in the list
		
		List<int> idArray = new List<int>();
		
		foreach (CursorIcon cursorIcon in cursorIcons)
		{
			idArray.Add (cursorIcon.id);
		}
		
		idArray.Sort ();
		return idArray.ToArray ();
	}
	
}