Add workflow_dispatch support to PR Help Wanted check (#11179)

* Add workflow_dispatch support to PR Help Wanted check

This update allows the PR Help Wanted workflow to be triggered manually via workflow_dispatch with a specified PR URL. It adds logic to fetch PR details using the GitHub CLI for manual runs and unifies variable handling for both event types.

* Update workflow to use PR number instead of URL

Changed the workflow_dispatch input from 'pr_url' to 'pr_number' and updated the script to construct the PR URL from the number.

* Move help-wanted check for draft PRs into script

* Don't prefix URL with `#`

* Invert draft checking logic

Inverting this logic because anything other than "false" means we should skip it.

* Move PR draft status check to shell script

The logic for checking if a pull request is a draft has been moved from the GitHub Actions workflow YAML to the check-help-wanted.sh script. This simplifies the workflow file and centralizes the draft status check within the script.

.github/workflows/pr-help-wanted.yml

@@ -2,6 +2,12 @@ name: PR Help Wanted Check
 on:
   pull_request_target:
     types: [opened]
+  workflow_dispatch:
+    inputs:
+      pr_number:
+        description: "Pull Request number to check"
+        required: true
+        type: string
 
 permissions:
   contents: none
@@ -15,13 +21,27 @@ jobs:
       - name: Checkout repository
         uses: actions/checkout@v4
 
+      - name: Set PR variables for workflow_dispatch event
+        id: pr-vars-dispatch
+        if: github.event_name == 'workflow_dispatch'
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          PR_NUMBER: ${{ github.event.inputs.pr_number }}
+        run: |
+          # We only need to construct the PR URL from the dispatch event input.
+          echo "pr_url=https://github.com/cli/cli/pull/${PR_NUMBER}" >> $GITHUB_OUTPUT
+
       - name: Check for issues without help-wanted label
         env:
           GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+            # These variables are optionally used in the check-help-wanted.sh
+            # script for additional checks; but they are not strictly necessary
+            # for the script to run. This is why we are okay with them being
+            # empty when the event is workflow_dispatch.
           PR_AUTHOR: ${{ github.event.pull_request.user.login }}
           PR_AUTHOR_TYPE: ${{ github.event.pull_request.user.type }}
           PR_AUTHOR_ASSOCIATION: ${{ github.event.pull_request.author_association }}
-        if: "!github.event.pull_request.draft"
+          PR_URL: ${{ github.event.pull_request.html_url || steps.pr-vars-dispatch.outputs.pr_url }}
         run: |
           # Run the script to check for issues without help-wanted label
-          bash .github/workflows/scripts/check-help-wanted.sh ${{ github.event.pull_request.html_url }}
+          bash .github/workflows/scripts/check-help-wanted.sh "${PR_URL}"

.github/workflows/scripts/check-help-wanted.sh

@@ -14,7 +14,13 @@ fi
 
 # Skip if PR is from a bot or org member
 if [ "$PR_AUTHOR_TYPE" = "Bot" ] || [ "$PR_AUTHOR_ASSOCIATION" = "MEMBER" ] || [ "$PR_AUTHOR_ASSOCIATION" = "OWNER" ]; then
-    echo "Skipping check for PR #$PR_URL as it is from a bot ($PR_AUTHOR_TYPE) or an org member ($PR_AUTHOR_ASSOCIATION: MEMBER/OWNER)"
+    echo "Skipping check for PR $PR_URL as it is from a bot ($PR_AUTHOR_TYPE) or an org member ($PR_AUTHOR_ASSOCIATION: MEMBER/OWNER)"
+    exit 0
+fi
+
+# Skip if PR is a draft
+if [ "$(gh pr view "${PR_URL}" --json isDraft --jq '.isDraft')" != "false" ]; then
+    echo "Skipping check for PR $PR_URL as it is a draft"
     exit 0
 fi