enable imports of swift code into objc akofman#9

README.md

@@ -23,6 +23,19 @@ As an example you can have a look at this [plugin](https://github.com/akofman/co
 
 If the `cordova-plugin-add-swift-support` plugin is already installed to your project, then you can add your own Swift plugin as usual, its prefixed Bridging-Header will be automatically found and merged.
 
+## Importing Swift into ObjectiveC code
+
+Because **ProductModuleName** of application using some Swift Cordova plugin is different than **ProductModuleName** of the
+plugin itself, you need to modify your ***.m*** files imports to:
+
+```
+#import "Swift2Objc-Header.h"
+```
+
+\* instead of ~~#import "ProductModuleName-Swift.h"~~
+
+This header will be created by this plugin and automatically registered with xcode project.
+
 ## Contributing
 
 The src folder contains ECMAScript 2015 source files.

src/main.js

@@ -36,6 +36,8 @@ export default (context) => {
 
       let bridgingHeaderPath;
       let bridgingHeaderContent;
+      let swift2objHeaderPath;
+      let swift2objcHeaderContent;
       let projectName;
       let projectPath;
       let pluginsPath;
@@ -81,6 +83,21 @@ export default (context) => {
         xcodeProject.addHeaderFile('Bridging-Header.h');
       }
 
+      swift2objHeaderPath = getSwift2ObjcHeaderPath(context, projectPath, iosPlatformVersion);
+
+      try{
+        fs.statSync(swift2objHeaderPath);
+      } catch(err) {
+        // If the bridging header doesn't exist, we create it with the minimum
+        // ProductModuleName-Swift.h import.
+        swift2objcHeaderContent = [ '//',
+        '//  Use this file to import your projects\'s generated swift-header to expose Swift to Objective-C.',
+        '//',
+        '#import "' + projectName.replace(' ', '_') + '-Swift.h"' ];
+        fs.writeFileSync(swift2objHeaderPath, swift2objcHeaderContent.join('\n'), { encoding: 'utf-8', flag: 'w' });
+        xcodeProject.addHeaderFile('Swift2Objc-Header.h');
+      }
+
       buildConfigs = xcodeProject.pbxXCBuildConfigurationSection();
 
       const bridgingHeaderProperty = '"$(PROJECT_DIR)/$(PROJECT_NAME)' + bridgingHeaderPath.split(projectPath)[1] + '"';
@@ -186,3 +203,15 @@ const getBridgingHeaderPath = (context, projectPath, iosPlatformVersion) => {
 
   return bridgingHeaderPath;
 };
+
+const getSwift2ObjcHeaderPath = (context, projectPath, iosPlatformVersion) => {
+  const semver = context.requireCordovaModule('semver');
+  let headerPath;
+  if(semver.lt(iosPlatformVersion, '4.0.0')) {
+    headerPath = path.posix.join(projectPath, 'Plugins', 'Swift2Objc-Header.h');
+  } else {
+    headerPath = path.posix.join(projectPath, 'Swift2Objc-Header.h');
+  }
+
+  return headerPath;
+}