From b27a87483669472b03aac252a35c0dde48ea5505 Mon Sep 17 00:00:00 2001
From: "Connor Bell (Makeshift)" <git@connor-bell.com>
Date: Thu, 5 Jan 2023 15:16:07 +0000
Subject: [PATCH] feat: Added the ability to customise a header at the top of
 the generated file

---
 action.yml   | 10 ++++++++--
 package.json |  2 +-
 src/index.js | 30 ++++++++++++++++++++++--------
 yarn.lock    |  8 ++++----
 4 files changed, 35 insertions(+), 15 deletions(-)

diff --git a/action.yml b/action.yml
index 54a67f4..cb838e6 100644
--- a/action.yml
+++ b/action.yml
@@ -11,8 +11,14 @@ inputs:
     default: .github/dependabot.template.yml
 
   follow-symbolic-links:
-    description: 'Indicates whether to follow symbolic links'
-    default: true
+    description: 'Indicates whether to follow symbolic links (If you want to put your template in a weird place)'
+    default: 'true'
+  
+  file-header:
+    description: 'Header to add to the generated file. {input-name} will be replaced with the value of the given input.'
+    default: |
+      # This file was generated by the "Generate Dependabot Glob" action. Do not edit it directly. 
+      # Make changes to `{template-file}` and a PR will be automatically created.
 
 runs:
   using: 'node16'
diff --git a/package.json b/package.json
index a011deb..65c4755 100644
--- a/package.json
+++ b/package.json
@@ -27,7 +27,7 @@
     "js-yaml": "^4.1.0"
   },
   "devDependencies": {
-    "@vercel/ncc": "^0.34.0",
+    "@vercel/ncc": "^0.36.0",
     "standard": "^17.0.0"
   }
 }
diff --git a/src/index.js b/src/index.js
index 738400b..e07cf02 100644
--- a/src/index.js
+++ b/src/index.js
@@ -5,22 +5,35 @@ const util = require('util')
 const glob = util.promisify(require('glob'))
 const path = require('path')
 
-const actionName = 'Makeshift/generate-dependabot-glob-action'
+const actionOpts = {
+  'template-file': core.getInput('template-file') || '.github/dependabot.template.yml',
+  'follow-symbolic-links': core.getInput('follow-symbolic-links') === 'true',
+  // eslint-disable-next-line no-template-curly-in-string
+  'file-header': core.getInput('file-header') || '# This file is generated from ${template-file}'
+}
 
 const globOpts = {
   root: process.cwd(),
   mark: true,
   matchBase: true,
   nomount: true,
-  follow: core.getInput('follow-symbolic-links') === 'true' || true
+  follow: actionOpts['follow-symbolic-links']
+}
+
+function parseStringTemplate (str, obj) {
+  const parts = str.split(/\$\{(?!\d)[\wæøåÆØÅ]*\}/)
+  const args = str.match(/[^{}]+(?=})/g) || []
+  const parameters = args.map(argument => obj[argument] || (obj[argument] === undefined ? '' : obj[argument]))
+  return String.raw({ raw: parts }, ...parameters)
 }
 
+// Lazy deep clone. Not great, but works for this purpose.
 const clone = obj => JSON.parse(JSON.stringify(obj))
 
 async function run () {
-  const templateFile = core.getInput('template-file') || '.github/dependabot.template.yml'
-  const template = yaml.load(await fs.readFile(templateFile, 'utf8'))
+  const { templateFile, warning } = actionOpts
 
+  const template = yaml.load(await fs.readFile(templateFile, 'utf8'))
   const newUpdates = []
 
   for (const entry of template.updates) {
@@ -29,7 +42,7 @@ async function run () {
     const matchingFiles = await glob(entry.directory, globOpts)
     core.info(`Found ${matchingFiles.length} files matching ${entry.directory}`)
     const matchingDirs = new Set(matchingFiles.map(file => path.dirname(file)))
-    core.info(`Found ${matchingDirs.length} directories matching ${entry.directory}`)
+    core.info(`Found ${matchingDirs.size} directories matching ${entry.directory}`)
 
     for (const dir of matchingDirs) {
       core.info(`Creating entry for ${dir} with ecosystem ${entry['package-ecosystem']}`)
@@ -39,11 +52,12 @@ async function run () {
     }
   }
 
-  core.info(`Here's the final config: ${JSON.stringify(newUpdates)}`)
+  core.info(`Here's the final config (JSON): ${JSON.stringify(newUpdates)}`)
   template.updates = newUpdates
   core.info('Writing config to .github/dependabot.yml')
-  const warning = `# This file is generated by the ${actionName} action via a GitHub Actions Workflow from the template file '${templateFile}'. Do not edit directly.`
-  await fs.writeFile('.github/dependabot.yml', warning + '\n' + yaml.dump(template))
+  const finalString = parseStringTemplate(warning, actionOpts) + '\n' + yaml.dump(template)
+  core.info(finalString)
+  await fs.writeFile('.github/dependabot.yml', finalString)
 }
 
 run().catch(error => {
diff --git a/yarn.lock b/yarn.lock
index f21446e..8d938ba 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -173,10 +173,10 @@
   resolved "https://registry.yarnpkg.com/@types/json5/-/json5-0.0.29.tgz#ee28707ae94e11d2b827bcbe5270bcea7f3e71ee"
   integrity sha512-dRLjCWHYg4oaA77cxO64oO+7JwCwnIzkZPdrrC71jQmQtlhM556pwKo5bUzqvZndkVbeFLIIi+9TC40JNF5hNQ==
 
-"@vercel/ncc@^0.34.0":
-  version "0.34.0"
-  resolved "https://registry.yarnpkg.com/@vercel/ncc/-/ncc-0.34.0.tgz#d0139528320e46670d949c82967044a8f66db054"
-  integrity sha512-G9h5ZLBJ/V57Ou9vz5hI8pda/YQX5HQszCs3AmIus3XzsmRn/0Ptic5otD3xVST8QLKk7AMk7AqpsyQGN7MZ9A==
+"@vercel/ncc@^0.36.0":
+  version "0.36.0"
+  resolved "https://registry.yarnpkg.com/@vercel/ncc/-/ncc-0.36.0.tgz#1f262b86fc4f0770bbc0fc1d331d5aaa1bd47334"
+  integrity sha512-/ZTUJ/ZkRt694k7KJNimgmHjtQcRuVwsST2Z6XfYveQIuBbHR+EqkTc1jfgPkQmMyk/vtpxo3nVxe8CNuau86A==
 
 acorn-jsx@^5.3.2:
   version "5.3.2"