using System.IO;
using System.Text;
using UnityEngine;
using UnityEditor;
using UnityEditor.ProjectWindowCallback;

internal class ScriptTemplates
{
	private static readonly string _path = "Assets/Scripts/StateMachine/Editor/Templates";

	[MenuItem("Assets/Create/State Machines/Action Script", priority = 20)]
	public static void CreateActionScript() =>
		ProjectWindowUtil.StartNameEditingIfProjectWindowExists(0,
			ScriptableObject.CreateInstance<DoCreateStateMachineScriptAsset>(),
			"NewActionSO.cs",
			(Texture2D)EditorGUIUtility.IconContent("cs Script Icon").image,
			$"{_path}/StateAction.txt");

	[MenuItem("Assets/Create/State Machines/Condition Script", priority = 20)]
	public static void CreateConditionScript() =>
		ProjectWindowUtil.StartNameEditingIfProjectWindowExists(0,
			ScriptableObject.CreateInstance<DoCreateStateMachineScriptAsset>(),
			"NewConditionSO.cs",
			(Texture2D)EditorGUIUtility.IconContent("cs Script Icon").image,
			$"{_path}/StateCondition.txt");

	private class DoCreateStateMachineScriptAsset : EndNameEditAction
	{
		public override void Action(int instanceId, string pathName, string resourceFile)
		{
			string text = File.ReadAllText(resourceFile);

			string fileName = Path.GetFileName(pathName);
			{
				string newName = fileName.Replace(" ", "");
				if (!newName.Contains("SO"))
					newName = newName.Insert(fileName.Length - 3, "SO");

				pathName = pathName.Replace(fileName, newName);
				fileName = newName;
			}

			string fileNameWithoutExtension = fileName.Substring(0, fileName.Length - 3);
			text = text.Replace("#SCRIPTNAME#", fileNameWithoutExtension);

			string runtimeName = fileNameWithoutExtension.Replace("SO", "");
			text = text.Replace("#RUNTIMENAME#", runtimeName);

			for (int i = runtimeName.Length - 1; i > 0; i--)
				if (char.IsUpper(runtimeName[i]) && char.IsLower(runtimeName[i - 1]))
					runtimeName = runtimeName.Insert(i, " ");

			text = text.Replace("#RUNTIMENAME_WITH_SPACES#", runtimeName);

			string fullPath = Path.GetFullPath(pathName);
			var encoding = new UTF8Encoding(true);
			File.WriteAllText(fullPath, text, encoding);
			AssetDatabase.ImportAsset(pathName);
			ProjectWindowUtil.ShowCreatedAsset(AssetDatabase.LoadAssetAtPath(pathName, typeof(UnityEngine.Object)));
		}
	}
}