use/make global config if local one isn't present

Author: samdeane

Package.swift

@@ -14,13 +14,6 @@ let package = Package(
     ],
 
     products: [
-        .library(
-            name: "SwiftFormatterPluginDefaults",
-            targets: [
-                "SwiftFormatterPluginDefaults"
-            ]
-        ),
-        
         .plugin(
             name: "SwiftFormatterPlugin",
             targets: [

Plugins/SwiftFormatterPlugin/SwiftFormatterPlugin.swift

@@ -14,11 +14,11 @@ struct FormatterPlugin: CommandPlugin {
         let swiftFormatExec = URL(fileURLWithPath: swiftFormatTool.path.string)
 
         var baseArguments: [String] = []
-//        let fm = FileManager.default
-//        let configFile = context.package.directory.appending(".swift-format.json").string
-//        if fm.fileExists(atPath: configFile) {
-//            baseArguments.append(contentsOf: ["--config", "\(configFile)"])
-//        }
+
+        let configFile = context.package.directory.appending(".swiftformat").string
+        if !FileManager.default.fileExists(atPath: configFile) {
+            baseArguments.append(contentsOf: ["--config", defaultConfigPath])
+        }
 
 
         for target in context.package.targets {
@@ -41,4 +41,19 @@ struct FormatterPlugin: CommandPlugin {
             }
         }
     }
+    
+    var defaultConfigPath: String {
+        let path = ("~/.swiftformat" as NSString).expandingTildeInPath
+        if !FileManager.default.fileExists(atPath: path) {
+            let defaultConfig = """
+                # Place your default swift-format configuration options here.
+                # See https://github.com/nicklockwood/SwiftFormat#config-file for more details.
+
+                """
+            
+            try? defaultConfig.write(toFile: path, atomically: true, encoding: .utf8)
+        }
+
+        return path
+    }
 }