using UnityEditor;
using UnityEngine;
using System.Collections;
using System.Collections.Generic;

namespace Fungus.Script
{

	[CustomEditor (typeof(Sequence))]
	public class SequenceEditor : Editor 
	{
		static public Sequence SequenceField(GUIContent label, FungusScript fungusScript, Sequence sequence)
		{
			if (fungusScript == null)
			{
				return null;
			}
			
			Sequence result = sequence;
			
			// Build dictionary of child sequences
			List<GUIContent> sequenceNames = new List<GUIContent>();
			
			int selectedIndex = 0;
			sequenceNames.Add(new GUIContent("<None>"));
			Sequence[] sequences = fungusScript.GetComponentsInChildren<Sequence>();
			for (int i = 0; i < sequences.Length; ++i)
			{
				sequenceNames.Add(new GUIContent(sequences[i].name));
				
				if (sequence == sequences[i])
				{
					selectedIndex = i + 1;
				}
			}
			
			selectedIndex = EditorGUILayout.Popup(label, selectedIndex, sequenceNames.ToArray());
			if (selectedIndex == 0)
			{
				result = null; // Option 'None'
			}
			else
			{
				result = sequences[selectedIndex - 1];
			}
			
			return result;
		}

		static public string VariableField(GUIContent label, FungusScript fungusScript, string variableKey, ref VariableType variableType)
		{
			List<string> keys = new List<string>();
			keys.Add("<None>");
			int index = 0;
			for (int i = 0; i < fungusScript.variables.Count; ++i)
			{
				Variable v = fungusScript.variables[i];
				keys.Add(v.key);
				if (v.key == variableKey &&
				    index == 0)
				{
					index = i + 1;
				}
			}
			
			int newIndex = EditorGUILayout.Popup(label.text, index, keys.ToArray());
			
			if (newIndex > 0)
			{
				variableType = fungusScript.variables[newIndex - 1].type;
			}
			
			return keys[newIndex];
		}
	}

}