Support subdirectory packages and alternate Registrator users (#4)

README.md

@@ -2,6 +2,8 @@
 
 Register Julia packages via GitHub Actions.
 
+## Basic Usage
+
 Create and push a file `.github/workflows/register.yml` with the following contents:
 
 ```yml
@@ -26,3 +28,32 @@ On that page, click "Run workflow", fill in your desired version, then click "Ru
 Your Project.toml will be updated, and a comment triggering [Registrator](https://github.com/JuliaRegistries/Registrator.jl) will be made on the resulting commit.
 You can also tell it to bump a version component rather than specifying the exact version.
 To do this, use "major", "minor", or "patch" as the version input to perform the corresponding bump.
+
+## Subdirectory Packages
+
+To register packages in subdirectories, update your workflow file to the following:
+
+```yml
+on:
+  workflow_dispatch:
+    inputs:
+      version:
+        description: Version to register or component to bump
+        required: true
+      subdir:
+        description: Subdirectory containing the package to register
+```
+
+Then fill out the value when triggering the action.
+For example, if your `Project.toml` is at `julia/Project.toml`, then give it the value `julia`.
+
+## Private Registries
+
+If you're using an alternate or private registry with the Registrator GitHub App set up on it, then update your workflow file to the following:
+
+```yml
+      - uses: julia-actions/RegisterAction@latest
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          registrator: MyBotUsername
+```

action.yml

@@ -5,6 +5,9 @@ inputs:
   token:
     description: GitHub API token
     required: true
+  registrator:
+    description: Registrator bot username
+    default: JuliaRegistrator
 runs:
   using: node12
   main: register.js

register.js

@@ -5,7 +5,9 @@ const github = require("@actions/github");
 const semver = require("semver");
 
 const CLIENT = github.getOctokit(core.getInput("token", { required: true }));
+const REGISTRATOR = core.getInput("registrator", { required: true });
 const EVENT = JSON.parse(fs.readFileSync(process.env.GITHUB_EVENT_PATH));
+const SUBDIR = EVENT.inputs.subdir;
 const REPO = {
   owner: process.env.GITHUB_REPOSITORY.split("/")[0],
   repo: process.env.GITHUB_REPOSITORY.split("/")[1],
@@ -40,13 +42,15 @@ const resolveVersion = async () => {
   return semver.inc(current, input);
 };
 
+const getProjectTomlPath = () => SUBDIR ? `${SUBDIR}/Project.toml` : "Project.toml";
+
 const getProjectToml = async () => {
   if (PROJECT_TOML) {
     return PROJECT_TOML;
   }
   const content = await CLIENT.repos.getContent({
     ...REPO,
-    path: "Project.toml",
+    path: getProjectTomlPath(),
   });
   PROJECT_TOML = Buffer.from(content.data.content, "base64").toString();
   return PROJECT_TOML;
@@ -67,7 +71,7 @@ const setVersion = async version => {
   const branch = process.env.GITHUB_REF.substr(11)  // Remove 'refs/heads/'.
   return CLIENT.repos.createOrUpdateFileContents({
     ...REPO,
-    path: "Project.toml",
+    path: getProjectTomlPath(),
     message: `Set version to ${version}`,
     content: Buffer.from(updated).toString("base64"),
     sha: blobSha(project),
@@ -81,12 +85,12 @@ const blobSha = contents => {
   return hash.digest("hex");
 };
 
-const triggerRegistrator = sha => {
-  return CLIENT.repos.createCommitComment({
-    ...REPO,
-    commit_sha: sha,
-    body: "@JuliaRegistrator register",
-  });
+const triggerRegistrator = commit_sha => {
+  let body = `@${REGISTRATOR} register`;
+  if (SUBDIR) {
+    body += ` subdir=${SUBDIR}`;
+  }
+  return CLIENT.repos.createCommitComment({ ...REPO, commit_sha, body });
 };
 
 if (!module.parent) {