Remind to not delete assets (#36161)

.github/actions-scripts/deleted-assets-pr-comment.js

@@ -0,0 +1,68 @@
+#!/usr/bin/env node
+
+import * as github from '@actions/github'
+import core from '@actions/core'
+
+const { GITHUB_TOKEN } = process.env
+const context = github.context
+
+if (!GITHUB_TOKEN) {
+  throw new Error(`GITHUB_TOKEN environment variable not set`)
+}
+
+// When this file is invoked directly from action as opposed to being imported
+if (import.meta.url.endsWith(process.argv[1])) {
+  const owner = context.repo.owner
+  const repo = context.payload.repository.name
+  const baseSHA = context.payload.pull_request.base.sha
+  const headSHA = context.payload.pull_request.head.sha
+
+  const markdown = await main(owner, repo, baseSHA, headSHA)
+  core.setOutput('markdown', markdown)
+}
+
+async function main(owner, repo, baseSHA, headSHA) {
+  const octokit = github.getOctokit(GITHUB_TOKEN)
+  // get the list of file changes from the PR
+  const response = await octokit.rest.repos.compareCommitsWithBasehead({
+    owner,
+    repo,
+    basehead: `${baseSHA}...${headSHA}`,
+  })
+
+  const { files } = response.data
+
+  const oldFilenames = []
+  for (const file of files) {
+    const { filename, status } = file
+    if (!filename.startsWith('assets')) continue
+    if (status === 'removed') {
+      // Bad
+      oldFilenames.push(filename)
+    } else if (status === 'renamed') {
+      // Also bad
+      const previousFilename = file.previous_filename
+      oldFilenames.push(previousFilename)
+    }
+  }
+
+  if (!oldFilenames.length) {
+    return ''
+  }
+
+  let markdown = '⚠️ 🙀 **You deleted some assets** 🙀 ⚠️\n\n'
+  markdown +=
+    "Even if you don't reference these assets anymore, as of this branch, you should not delete them.\n"
+  markdown += 'They might still be referenced in translated content.\n'
+  markdown += 'The weekly "Delete orphaned assets" workflow will worry about cleaning those up.\n\n'
+  markdown += '**To *undo* these removals run this command:**\n\n'
+  markdown += `
+\`\`\`sh
+git checkout origin/main -- ${oldFilenames.join(' ')}
+\`\`\`
+`
+
+  return markdown
+}
+
+export default main