using System;
using System.IO;
using Editor;
using Sandbox;

namespace VNBase.Editor;

public static class EditorEvents
{
	private const string DefaultFileName = "Untitled";
	private const string Extension = ".vnscript";
	
	[Event( "folder.contextmenu" )]
	private static void FolderContextMenu( FolderContextMenu obj )
	{
		if ( obj.Context is not AssetList assetList )
		{
			return;
		}
		
		var newMenu = obj.Menu.FindOrCreateMenu( "New" );
		
		if ( !newMenu.IsValid() )
		{
			return;
		}
		
		var browser = assetList.Browser;
		var option = new Option( "VNScript", "description", () => CreateNewFile( browser ) );
		var subMenu = newMenu.FindOrCreateMenu( "VNBase" );
		subMenu.AddOption( option );
	}
	
	private static void CreateNewFile( IBrowser browser )
	{
		var directoryPath = browser.CurrentLocation.Path;
		
		if ( !Directory.Exists( directoryPath ) )
		{
			Log.Error( $"Directory does not exist: {directoryPath}" );
			return;
		}
		
		var defaultPath = Path.Combine( directoryPath, DefaultFileName + Extension );
		
		try
		{
			var chosenPath = EditorUtility.SaveFileDialog( "Save vnscript file...", Extension, defaultPath );
			
			if ( string.IsNullOrWhiteSpace( chosenPath ) )
			{
				return;
			}
			
			File.WriteAllText( chosenPath, GetScriptTemplate() );
			Log.Info( $"Created new VNScript file at: {chosenPath}" );
		}
		catch ( Exception ex )
		{
			Log.Error( $"Failed to create VNScript file: {ex}" );
		}
	}
	
	private static string GetScriptTemplate()
	{
		return """
			   // This is a basic VNScript template.
			   // For more information, please refer to the wiki: https://github.com/WackyWizards/SBox-Visual-Novel-Base/wiki/How-To-Write-Your-First-Script
			   (label beginning
			       (dialogue "This is a starting example script!")
			       (after end)
			   )
			   
			   (start beginning)
			   """;
	}
}