feat: new 'mainBranch' parameter

plugin/README.md

@@ -13,7 +13,7 @@ Read our full documentation [here](../docs/GettingStarted.md)
 
 Plugin inputs can be set in `netlify.toml`. They're all optional.
 
-- `branches` - _Default: `['master']`_ - List of branches the crawler should build.  
+- `branches` - _Default: `['master', 'main']`_ - List of branches the crawler should build.  
   By default, we only build your main branch, but this can be used to build multiple branches.
   Each of those will have a dedicated Algolia index, named `netlify_<site-id>_<branch-name>_all`.
   You will need to [target the right branch](../frontend#using-multiple-branches) in your front-end code.
@@ -22,6 +22,8 @@ Plugin inputs can be set in `netlify.toml`. They're all optional.
   - `feat/*`: matches all branches starting with `feat/`
   - `*-bug`: matches all branches finishing with `-bug`
 - `disabled` - _Default: `false`_ - Use to disable the plugin without removing it.
+- `mainBranch` - The main project's branch. If set, it will be used to propagate your [Algolia index settings](https://www.algolia.com/doc/guides/managing-results/relevance-overview/#index-setting-and-query-parameters) modifications to other branches:
+  Settings of the Algolia index of your main branch will be used to create the new index when the plugin runs for the first time on a new branch.
 - `pathPrefix` - The prefix of your website if it's not at the root level.
   Putting "pathPrefix: /blog" will alias `/blog` to `/`
 - `customDomain` - The custom domain that you use, if it's not possible to define it on your Netlify's settings.

plugin/manifest.yml

@@ -6,6 +6,8 @@ inputs:
   - name: branches
     description: Branches to index. Each branch in this array will have its content crawled in a dedicated index.
     default: ['master', 'main']
+  - name: mainBranch
+    description: Main working branch. Usefull when you tweak Algolia search settings. If set, Algolia indices created for other branches will inherit the settings of the mainBranch's index.
   - name: pathPrefix
     description: The prefix of your website if it's not at the root level, e.g /blog
   - name: customDomain

plugin/src/index.ts

@@ -48,6 +48,7 @@ export async function onSuccess(params: BuildParams): Promise<void> {
   const algoliaApiKey = process.env.ALGOLIA_API_KEY;
 
   const branches = inputs.branches;
+  const mainBranch = inputs.mainBranch;
   const pathPrefix = inputs.pathPrefix;
   const customDomain = inputs.customDomain;
 
@@ -100,6 +101,7 @@ export async function onSuccess(params: BuildParams): Promise<void> {
   try {
     const body = JSON.stringify({
       branch,
+      mainBranch,
       siteName,
       deployPrimeUrl,
       version,

plugin/src/types.ts

@@ -6,6 +6,7 @@ export interface BuildParams {
   inputs: {
     disabled: boolean;
     branches: string[];
+    mainBranch?: string;
     pathPrefix?: string;
     customDomain?: string;
   };

scripts/generate_netlify_toml.sh

@@ -17,6 +17,7 @@ dev_only='
 package = "./plugin/dist/index.js"
   [plugins.inputs]
   branches = ["*"]
+  mainBranch = "master"
 
 [[plugins]]
 package = "@algolia/netlify-plugin-crawler"