From 7f7a95f7fcd81e3d787ab7c70f72820c4ea3b811 Mon Sep 17 00:00:00 2001
From: Jorgen Dahl <sm6srw@users.noreply.github.com>
Date: Fri, 8 Jan 2021 10:24:23 -0500
Subject: [PATCH] DYN-3320: Add basic standard library support (#11383)

* Add basic standard library support

* Add basic test

* Address comments

* Remove unneeded this references.
---
 src/DynamoPackages/PackageLoader.cs           | 33 ++++++++++++-------
 .../PackageManagerTests/PackageLoaderTests.cs | 18 +++++++++-
 2 files changed, 38 insertions(+), 13 deletions(-)

diff --git a/src/DynamoPackages/PackageLoader.cs b/src/DynamoPackages/PackageLoader.cs
index 54a4dedb257..eac5ab32d3d 100644
--- a/src/DynamoPackages/PackageLoader.cs
+++ b/src/DynamoPackages/PackageLoader.cs
@@ -76,6 +76,11 @@ public string DefaultPackagesDirectory
 
         private readonly List<string> packagesDirectoriesToVerifyCertificates = new List<string>();
 
+        // The standard library directory is located in the same directory as the DynamoPackages.dll
+        internal string StandardLibraryDirectory =>
+            Path.Combine(Path.GetDirectoryName(Assembly.GetAssembly(GetType()).Location),
+                @"Standard Library", @"Packages");
+
         public PackageLoader(string overridePackageDirectory)
             : this(new[] { overridePackageDirectory })
         {
@@ -87,10 +92,14 @@ public PackageLoader(IEnumerable<string> packagesDirectories)
                 throw new ArgumentNullException("packagesDirectories");
 
             this.packagesDirectories.AddRange(packagesDirectories);
+            this.packagesDirectories.Add(StandardLibraryDirectory);
+            
             var error = PathHelper.CreateFolderIfNotExist(DefaultPackagesDirectory);
 
             if (error != null)
                 Log(error);
+
+            packagesDirectoriesToVerifyCertificates.Add(StandardLibraryDirectory);
         }
 
         /// <summary>
@@ -104,7 +113,7 @@ public PackageLoader(IEnumerable<string> packagesDirectories, IEnumerable<string
             if (packageDirectoriesToVerify == null)
                 throw new ArgumentNullException("packageDirectoriesToVerify");
 
-            this.packagesDirectoriesToVerifyCertificates.AddRange(packageDirectoriesToVerify);
+            packagesDirectoriesToVerifyCertificates.AddRange(packageDirectoriesToVerify);
         }
 
         private void OnPackageAdded(Package pkg)
@@ -125,9 +134,9 @@ private void OnPackageRemoved(Package pkg)
 
         internal void Add(Package pkg)
         {
-            if (!this.localPackages.Contains(pkg))
+            if (!localPackages.Contains(pkg))
             {
-                this.localPackages.Add(pkg);
+                localPackages.Add(pkg);
                 pkg.MessageLogged += OnPackageMessageLogged;
                 OnPackageAdded(pkg);
             }
@@ -135,9 +144,9 @@ internal void Add(Package pkg)
 
         internal void Remove(Package pkg)
         {
-            if (this.localPackages.Contains(pkg))
+            if (localPackages.Contains(pkg))
             {
-                this.localPackages.Remove(pkg);
+                localPackages.Remove(pkg);
                 pkg.MessageLogged -= OnPackageMessageLogged;
                 OnPackageRemoved(pkg);
             }
@@ -178,7 +187,7 @@ private IEnumerable<CustomNodeInfo> OnRequestLoadCustomNodeDirectory(string dire
         /// <param name="package"></param>
         internal void TryLoadPackageIntoLibrary(Package package)
         {
-            this.Add(package);
+            Add(package);
 
             // Prevent duplicate loads
             if (package.Loaded) return;
@@ -216,11 +225,11 @@ internal void TryLoadPackageIntoLibrary(Package package)
                     {
                         RequestAddExtension?.Invoke(extension);
                     }
-                    this.requestedExtensions.Add(extension);
+                    requestedExtensions.Add(extension);
                 }
 
                 package.Loaded = true;
-                this.PackgeLoaded?.Invoke(package);
+                PackgeLoaded?.Invoke(package);
             }
             catch (CustomNodePackageLoadException e)
             {
@@ -316,9 +325,9 @@ public void LoadCustomNodesAndPackages(LoadPackageParams loadPackageParams, Cust
             foreach (var path in loadPackageParams.Preferences.CustomPackageFolders)
             {
                 customNodeManager.AddUninitializedCustomNodesInPath(path, false, false);
-                if (!this.packagesDirectories.Contains(path))
+                if (!packagesDirectories.Contains(path))
                 {
-                    this.packagesDirectories.Add(path);
+                    packagesDirectories.Add(path);
                 }
             }
             LoadAll(loadPackageParams);
@@ -351,7 +360,7 @@ private void ScanPackageDirectories(string root, IPreferences preferences)
                         return;
                     }
 
-                    this.Log(string.Format(Resources.InvalidPackageFolderWarning, root));
+                    Log(string.Format(Resources.InvalidPackageFolderWarning, root));
                     return;
                 }
 
@@ -415,7 +424,7 @@ public Package ScanPackageDirectory(string directory, bool checkCertificates)
                 // prevent duplicates
                 if (LocalPackages.All(pkg => pkg.Name != discoveredPkg.Name))
                 {
-                    this.Add(discoveredPkg);
+                    Add(discoveredPkg);
                     return discoveredPkg; // success
                 }
                 throw new LibraryLoadFailedException(directory, String.Format(Properties.Resources.DulicatedPackage, discoveredPkg.Name, discoveredPkg.RootDirectory));
diff --git a/test/Libraries/PackageManagerTests/PackageLoaderTests.cs b/test/Libraries/PackageManagerTests/PackageLoaderTests.cs
index 3504937b768..beee97e7782 100644
--- a/test/Libraries/PackageManagerTests/PackageLoaderTests.cs
+++ b/test/Libraries/PackageManagerTests/PackageLoaderTests.cs
@@ -2,7 +2,7 @@
 using System.Collections.Generic;
 using System.IO;
 using System.Linq;
-using Dynamo.Engine;
+using System.Reflection;
 using Dynamo.Extensions;
 using Dynamo.Graph.Nodes;
 using Dynamo.Graph.Nodes.CustomNodes;
@@ -642,6 +642,22 @@ public void ScanPackageDirectoryWithCheckingCertificatesEnabledWillLoadPackageWi
         //    }
         //}
 
+        [Test]
+        public void HasValidStandardLibraryPath()
+        {
+            // Arrange
+            var loader = new PackageLoader(new[] { PackagesDirectory }, new[] { PackagesDirectorySigned });
+            var directory = Path.Combine(Path.GetDirectoryName(Assembly.GetAssembly(loader.GetType()).Location),
+                @"Standard Library", @"Packages");
+
+            // Act
+            var standardDirectory = loader.StandardLibraryDirectory;
+
+            // Assert
+            Assert.IsNotNullOrEmpty(standardDirectory);
+            Assert.AreEqual(standardDirectory, directory);
+        }
+
         [Test]
         public void IsUnderPackageControlIsCorrectForValidFunctionDefinition()
         {