Allow overriding main branch name

Author: stuartleeks

action.yml

@@ -69,6 +69,11 @@ inputs:
     description: >- 
       Published Template IDs will be prefixed with the namespace.
       If omitted, this value will default to the source repo name
+  default-branch:
+    required: false
+    description: >- 
+      The default branch for the repo (used when creating pull requests for documentation updates)
+      If omitted, this value will default to `main`
 runs:
   using: node16
   main: dist/index.js

src/generateDocs.ts

@@ -39,15 +39,15 @@ const TEMPLATE_README_TEMPLATE = `
 _Note: This file was auto-generated from the [devcontainer-template.json](#{RepoUrl}).  Add additional notes to a \`NOTES.md\`._
 `;
 
-export async function generateFeaturesDocumentation(basePath: string, ociRegistry: string, namespace: string) {
-    await _generateDocumentation(basePath, FEATURES_README_TEMPLATE, 'devcontainer-feature.json', ociRegistry, namespace);
+export async function generateFeaturesDocumentation(basePath: string, ociRegistry: string, namespace: string, defaultBranch: string) {
+    await _generateDocumentation(basePath, FEATURES_README_TEMPLATE, 'devcontainer-feature.json', defaultBranch, ociRegistry, namespace);
 }
 
-export async function generateTemplateDocumentation(basePath: string) {
-    await _generateDocumentation(basePath, TEMPLATE_README_TEMPLATE, 'devcontainer-template.json');
+export async function generateTemplateDocumentation(basePath: string, defaultBranch: string) {
+    await _generateDocumentation(basePath, TEMPLATE_README_TEMPLATE, 'devcontainer-template.json', defaultBranch);
 }
 
-async function _generateDocumentation(basePath: string, readmeTemplate: string, metadataFile: string, ociRegistry: string = '', namespace: string = '') {
+async function _generateDocumentation(basePath: string, readmeTemplate: string, metadataFile: string, defaultBranch: string, ociRegistry: string = '', namespace: string = '') {
     const directories = fs.readdirSync(basePath);
 
     await Promise.all(
@@ -117,7 +117,7 @@ async function _generateDocumentation(basePath: string, readmeTemplate: string,
                 let urlToConfig = `${metadataFile}`;
                 const basePathTrimmed = basePath.startsWith('./') ? basePath.substring(2) : basePath;
                 if (srcInfo.owner && srcInfo.repo) {
-                    urlToConfig = `https://github.com/${srcInfo.owner}/${srcInfo.repo}/blob/main/${basePathTrimmed}/${f}/${metadataFile}`;
+                    urlToConfig = `https://github.com/${srcInfo.owner}/${srcInfo.repo}/blob/${defaultBranch}/${basePathTrimmed}/${f}/${metadataFile}`;
                 }
 
                 let header;

src/main.ts

@@ -17,6 +17,7 @@ async function run(): Promise<void> {
     // Read inputs
     const shouldGenerateDocumentation = core.getInput('generate-docs').toLowerCase() === 'true';
     const sourceMetadata = getGitHubMetadata();
+    const defaultBranch = core.getInput('default-branch') ?? 'main';
 
     // Read inputs - Features
     const shouldPublishFeatures = core.getInput('publish-features').toLowerCase() === 'true';
@@ -127,12 +128,12 @@ async function run(): Promise<void> {
 
     if (shouldGenerateDocumentation && featuresBasePath) {
         core.info('Generating documentation for Features...');
-        await generateFeaturesDocumentation(featuresBasePath, featuresOciRegistry, featuresNamespace);
+        await generateFeaturesDocumentation(featuresBasePath, featuresOciRegistry, featuresNamespace, defaultBranch);
     }
 
     if (shouldGenerateDocumentation && templatesBasePath) {
         core.info('Generating documentation for Templates...');
-        await generateTemplateDocumentation(templatesBasePath);
+        await generateTemplateDocumentation(templatesBasePath, defaultBranch);
     }
 }