ILSpy/ILSpy/Commands/SolutionExport.cs

// Copyright (c) 2026 AlphaSierraPapa for the SharpDevelop Team
//
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using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Linq;
using System.Threading.Tasks;

using ICSharpCode.ILSpy.Properties;
using ICSharpCode.ILSpyX;
using ICSharpCode.ILSpyX.TreeView;

using ILSpy.Docking;
using ILSpy.Languages;
using ILSpy.TextView;
using ILSpy.TreeNodes;
using ILSpy.Util;

namespace ILSpy.Commands
{
	/// <summary>
	/// The shared "export several assemblies as a Visual Studio solution" flow behind both the
	/// File &rarr; Save Code command and the Save Code context-menu entry: it recognises a
	/// solution-eligible selection, prompts for the <c>.sln</c> path, runs
	/// <see cref="SolutionWriter"/> behind the tab's cancellable progress UI, and surfaces the
	/// status report in the active decompiler tab.
	/// </summary>
	internal static class SolutionExport
	{
		/// <summary>
		/// True when <paramref name="nodes"/> is several assembly nodes that all loaded as valid
		/// assemblies — the only selection shape that maps onto a multi-project solution.
		/// </summary>
		public static bool TryGetAssemblies(IReadOnlyList<SharpTreeNode>? nodes, out List<LoadedAssembly> assemblies)
		{
			assemblies = new List<LoadedAssembly>();
			if (nodes is not { Count: > 1 })
				return false;
			if (!nodes.All(n => n is AssemblyTreeNode { LoadedAssembly.IsLoadedAsValidAssembly: true }))
				return false;
			assemblies = nodes.OfType<AssemblyTreeNode>().Select(n => n.LoadedAssembly).ToList();
			return true;
		}

		/// <summary>
		/// Prompts for a target <c>.sln</c> file and exports <paramref name="assemblies"/> into it,
		/// one decompiled project each. The export runs in its own frozen tab so browsing the tree
		/// can't cancel it, and the status report lands there. Does nothing if the user cancels the picker.
		/// </summary>
		public static async Task PromptAndExportAsync(IReadOnlyList<LoadedAssembly> assemblies,
			Language language, DockWorkspace dockWorkspace)
		{
			var path = await FilePickers.SaveAsync(
				Resources.VisualStudioSolutionFileSlnAllFiles, "Solution.sln", Resources._SaveCode)
				.ConfigureAwait(true);
			if (string.IsNullOrEmpty(path))
				return;

			// Run in a dedicated frozen tab so browsing the tree while the export runs can't cancel it.
			await dockWorkspace.RunInNewTabAsync("Exporting solution", async token => {
				var result = await SolutionWriter.CreateSolutionAsync(path, language, assemblies, token)
					.ConfigureAwait(false);
				var o = new AvaloniaEditTextOutput { Title = Resources._SaveCode };
				o.Write(result.StatusText);
				o.WriteLine();
				if (result.Success && Path.GetDirectoryName(path) is { Length: > 0 } directory)
				{
					o.AddButton(null, Resources.OpenExplorer, (_, _) => ShellHelper.OpenFolder(directory));
					o.WriteLine();
				}
				return o;
			}).ConfigureAwait(true);
		}

	}
}