Allow versioning and version parameters.

src/model/input.js

@@ -1,7 +1,10 @@
 import Platform from './platform';
+import ValidationError from './error/validation-error';
 
 const core = require('@actions/core');
 
+const versioningStrategies = ['None', 'Semantic', 'Tag', 'Custom'];
+
 class Input {
   static getFromUser() {
     // Input variables specified in workflows using "with" prop.
@@ -11,11 +14,20 @@ class Input {
     const buildName = core.getInput('buildName') || targetPlatform;
     const buildsPath = core.getInput('buildsPath') || 'build';
     const buildMethod = core.getInput('buildMethod'); // processed in docker file
+    const versioning = core.getInput('versioning') || 'Semantic';
+    const version = core.getInput('version') || '';
     const customParameters = core.getInput('customParameters') || '';
 
     // Sanitise input
     const projectPath = rawProjectPath.replace(/\/$/, '');
 
+    // Validate input
+    if (!versioningStrategies.includes(versioning)) {
+      throw new ValidationError(
+        `Versioning strategy should be one of ${versioningStrategies.join(', ')}.`,
+      );
+    }
+
     // Return sanitised input
     return {
       unityVersion,
@@ -24,6 +36,8 @@ class Input {
       buildName,
       buildsPath,
       buildMethod,
+      versioning,
+      version,
       customParameters,
     };
   }