getting closer

Package.resolved

@@ -17,6 +17,15 @@
         "revision" : "1c30064de9dceac00aa3fefc70a1431e425e5f28",
         "version" : "1.3.0"
       }
+    },
+    {
+      "identity" : "swift-argument-parser",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/apple/swift-argument-parser.git",
+      "state" : {
+        "revision" : "8f4d2753f0e4778c76d5f05ad16c74f707390531",
+        "version" : "1.2.3"
+      }
     }
   ],
   "version" : 2

Package.swift

@@ -13,6 +13,7 @@ let package = Package(
   dependencies: [
     .package(url: "https://github.com/onevcat/Rainbow", from: "4.0.0"),
     .package(url: "https://github.com/FullQueueDeveloper/Sh.git", from: "1.3.0"),
+    .package(url: "https://github.com/apple/swift-argument-parser.git", from: "1.2.0"),
 //    .package(path: "PluginsPackage"),
   ],
   targets: [
@@ -39,7 +40,10 @@ let package = Package(
         "GenerateTemplatesTool"
       ]
     ),
-    .executableTarget(name: "GenerateTemplatesTool",
-                     dependencies: [])
+    .executableTarget(
+      name: "GenerateTemplatesTool",
+      dependencies: [
+        .product(name: "ArgumentParser", package: "swift-argument-parser"),
+      ])
   ]
 )

Plugins/GenerateTemplatesPlugin/GenerateTemplatesPlugin.swift

@@ -5,18 +5,27 @@ import Foundation
 struct GenerateTemplatesPlugin: BuildToolPlugin {
   func createBuildCommands(context: PackagePlugin.PluginContext, target: PackagePlugin.Target) async throws -> [PackagePlugin.Command] {
 
-    //    let spxlibTarget = try context.package.targets(named: ["SPXLib"]).first!
-//    let outputDir = context.pluginWorkDirectory.appending("GeneratedFiles")
+    let templatesDir = context.package.directory.appending(subpath: "templates")
+
+    let contents = try FileManager.default.contentsOfDirectory(atPath: templatesDir.string)
+
+    print(contents)
+
     return [
       .buildCommand(
         displayName: "GenerateTemplatesPlugin",
         executable: try context.tool(named: "GenerateTemplatesTool").path,
         arguments: [
+          templatesDir.string,
           context.pluginWorkDirectory.string
         ],
-        outputFiles: [context.pluginWorkDirectory.appending("/ttt.swift")]
+        inputFiles: contents.map { Path($0) },
+        outputFiles: [
+          context.pluginWorkDirectory.appending("Templates.swift"),
+        ] + contents.map({ templateName in
+          Path("\(templateName)Template.swift")
+        })
       ),
-
     ]
   }
 }