impl

.gitattributes

@@ -0,0 +1,9 @@
+* -text
+
+*.cs        text eol=lf diff=csharp
+*.shader    text eol=lf
+*.cginc     text eol=lf
+*.hlsl      text eol=lf
+*.compute   text eol=lf
+
+*.meta      text eol=lf

.gitignore

@@ -0,0 +1,18 @@
+# Windows
+Thumbs.db
+Desktop.ini
+/*.csproj
+/*.sln
+
+# macOS
+.DS_Store
+
+# Vim
+*.swp
+
+# Unity
+/Logs
+/Library
+/Temp
+.vs
+obj

CHANGELOG.md

@@ -0,0 +1,3 @@
+# Changelog
+
+\* *This Changelog was automatically generated by [github_changelog_generator](https://github.com/github-changelog-generator/github-changelog-generator)*

Editor/Coffee.GitDependencyResolver.asmdef

@@ -0,0 +1,14 @@
+{
+    "name": "Coffee.GitDependencyResolver",
+    "references": [],
+    "optionalUnityReferences": [],
+    "includePlatforms": [
+        "Editor"
+    ],
+    "excludePlatforms": [],
+    "allowUnsafeCode": false,
+    "overrideReferences": false,
+    "precompiledReferences": [],
+    "autoReferenced": false,
+    "defineConstraints": []
+}

Editor/GitDependencyResolver.cs

@@ -0,0 +1,114 @@
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using UnityEditor;
+using UnityEngine;
+
+namespace Coffee.PackageManager
+{
+	[InitializeOnLoad]
+	public static class GitDependencyResolver
+	{
+		static GitDependencyResolver ()
+		{
+			EditorApplication.projectChanged += StartResolve;
+			StartResolve ();
+		}
+
+		/// <summary>
+		/// Uninstall unused packages (for auto-installed packages)
+		/// </summary>
+		static void UninstallUnusedPackages ()
+		{
+			bool check = true;
+			while (check)
+			{
+				check = false;
+
+				// Collect all dependencies.
+				var allDependencies = Directory.GetDirectories ("./Library/PackageCache")
+					.Concat (Directory.GetDirectories ("./Packages"))
+					.Select (PackageMeta.FromPackageDir)            // Convert to PackageMeta
+					.Where (x => x != null)                         // Skip null
+					.SelectMany (x => x.dependencies)               // Get all dependencies
+					.ToArray ();
+
+				// Collect unused pakages.
+				var unusedPackages = Directory.GetDirectories ("./Packages")
+					.Where (x => Path.GetFileName (x).StartsWith ("."))         // Directory name starts with '.'. This is 'auto-installed package'
+					.Select (PackageMeta.FromPackageDir)                        // Convert to PackageMeta
+					.Where (x => x != null)                                     // Skip null
+					.Where (x => allDependencies.All (y => y.name != x.name))   // No depended from other packages
+					.ToArray ();
+
+				// Uninstall unused packages and re-check.
+				foreach (var p in unusedPackages)
+				{
+					check = true;
+					Debug.LogFormat ("[Resolver] Uninstall unused package: {0} from {1}", p.name, p.path);
+					FileUtil.DeleteFileOrDirectory (p.path);
+				}
+			}
+		}
+
+
+		static void StartResolve ()
+		{
+			// Uninstall unused packages (for auto-installed packages)
+			UninstallUnusedPackages ();
+
+			// Collect all installed pakages.
+			var installedPackages = Directory.GetDirectories ("./Library/PackageCache")
+				.Concat (Directory.GetDirectories ("./Packages"))
+				.Select (PackageMeta.FromPackageDir)    // Convert to PackageMeta
+				.Where (x => x != null)                 // Skip null
+				.ToArray ();
+
+			// Collect all dependencies.
+			var dependencies = installedPackages
+				.SelectMany (x => x.dependencies)				// Get all dependencies
+				.Where (x => !string.IsNullOrEmpty (x.path));	// path (url) is available
+
+			List<PackageMeta> requestedPackages = new List<PackageMeta> ();
+
+			// Check all dependencies.
+			foreach (var dependency in dependencies)
+			{
+				// Is the depended package installed already?
+				bool isInstalled = installedPackages
+						.Concat (requestedPackages)
+						.Any (x => dependency.name == x.name && dependency.version <= x.version);
+
+				// Install the depended package later.
+				if (!isInstalled)
+				{
+					Debug.LogFormat ("[Resolver] A dependency package is requested: {0}", dependency.name);
+					requestedPackages.RemoveAll (x => dependency.name == x.name);
+					requestedPackages.Add (dependency);
+				}
+			}
+
+			// No packages is requested to install.
+			if (requestedPackages.Count == 0)
+				return;
+
+			// Install all requested packages.
+			for (int i = 0; i < requestedPackages.Count; i++)
+			{
+				PackageMeta meta = requestedPackages [i];
+				EditorUtility.DisplayProgressBar ("Add Package", "Cloning: " + meta.name, i / (float)requestedPackages.Count);
+				Debug.LogFormat ("[Resolver] A package is cloning: {0}", meta.name);
+				bool success = GitUtils.ClonePackage (meta);
+				if (!success)
+				{
+					Debug.LogFormat ("[Resolver] Failed to clone: {0}", meta.name);
+					break;
+				}
+			}
+
+			// Recompile the packages
+			EditorUtility.ClearProgressBar ();
+			EditorApplication.delayCall += AssetDatabase.Refresh;
+		}
+	}
+}