Update exit code name, set default exit code to -1 to make bugs obvious

action.yml

@@ -261,6 +261,11 @@ outputs:
     description: 'The generated version used for the Unity build'
   androidVersionCode:
     description: 'The generated versionCode used for the Android Unity build'
+  engineExitCode:
+    description:
+      'Returns the exit code from the build scripts. This code is 0 if the build was successful. If there was an error
+      during activation, the code is from the activation step. If activation is successful, the code is from the project
+      build step.'
 branding:
   icon: 'box'
   color: 'gray-dark'

src/index.ts

@@ -19,7 +19,7 @@ async function runMain() {
     const buildParameters = await BuildParameters.create();
     const baseImage = new ImageTag(buildParameters);
 
-    let exitCode = 0;
+    let exitCode = -1;
 
     if (buildParameters.providerStrategy === 'local') {
       core.info('Building locally');
@@ -39,7 +39,7 @@ async function runMain() {
     // Set output
     await Output.setBuildVersion(buildParameters.buildVersion);
     await Output.setAndroidVersionCode(buildParameters.androidVersionCode);
-    await Output.setExitCode(exitCode);
+    await Output.setEngineExitCode(exitCode);
 
     if (exitCode !== 0) {
       core.setFailed(`Build failed with exit code ${exitCode}`);

src/model/output.ts

@@ -9,8 +9,8 @@ class Output {
     core.setOutput('androidVersionCode', androidVersionCode);
   }
 
-  static async setExitCode(exitCode: number) {
-    core.setOutput('exitCode', exitCode);
+  static async setEngineExitCode(exitCode: number) {
+    core.setOutput('engineExitCode', exitCode);
   }
 }