use js to find the version substring from the label string

sarahs · sarahs · commit f0303416f577 · 2020-11-23T17:03:02.000-05:00
diff --git a/.github/actions-scripts/enterprise-algolia-label.js b/.github/actions-scripts/enterprise-algolia-label.js
@@ -0,0 +1,24 @@
+#!/usr/bin/env node
+
+const fs = require('fs')
+const core = require('@actions/core')
+const eventPayload = JSON.parse(fs.readFileSync(process.env.GITHUB_EVENT_PATH, 'utf8'))
+
+// This workflow-run script:
+// 1. Gets an array of labels on a PR
+// 2. Finds one with the relevant Algolia text
+// 3. Gets the version substring from the label string
+
+const labelText = 'sync-english-index-for-'
+const labelsArray = eventPayload.pull_request.labels
+
+// Find the relevant label
+const algoliaLabel = labelsArray.find(label => label.startsWith(labelText))
+
+// Given: sync-english-index-for-enterprise-server@3.0
+// Returns: enterprise-server@3.0
+const versionToSync = algoliaLabel.split(labelText)[1]
+
+// Store the version so we can access it later in the workflow
+core.setOutput('versionToSync', versionToSync)
+process.exit(0)
diff --git a/.github/workflows/sync-single-english-algolia-index.yml b/.github/workflows/sync-single-english-algolia-index.yml
@@ -15,7 +15,7 @@ on:
 jobs:
   updateIndices:
     name: Update English index for single version based on a label's version
-    if: github.repository == 'github/docs-internal' && startsWith(github.event.label.name, 'sync-english-index-for-')
+    if: github.repository == 'github/docs-internal' && contains(github.event.pull_request.labels.*.name, 'sync-english-index-for-')
     runs-on: ubuntu-latest
     steps:
       - name: checkout
@@ -34,11 +34,10 @@ jobs:
         run: npm ci
       - name: Get version from label
         id: getVersion
-        run: |
-          echo "::set-output name=version::$(github.event.label.name.split('sync-english-index-for-')[1])"
+        run: $GITHUB_WORKSPACE/.github/actions-scripts/enterprise-algolia-label.js
       - name: Sync English index for single version
         env:
-          VERSION: ${{ steps.getVersion.outputs.version }}
+          VERSION: ${{ steps.getVersion.outputs.versionToSync }}
           LANGUAGE: 'en'
           ALGOLIA_APPLICATION_ID: ${{ secrets.ALGOLIA_APPLICATION_ID }}
           ALGOLIA_API_KEY: ${{ secrets.ALGOLIA_API_KEY }}
