build: add slash commands via reusable workflows

Author: Planeshifter

.github/workflows/check_required_files.yml

@@ -21,9 +21,8 @@ name: check_required_files
 
 # Workflow triggers:
 on:
-  # Trigger the workflow when a PR review is requested:
-  pull_request_target:
-    types: [review_requested]
+  # Allow the workflow to be triggered by other workflows
+  workflow_call:
 
 # Global permissions:
 permissions:
@@ -66,31 +65,15 @@ jobs:
           lfs: false
         timeout-minutes: 10
 
-      # Check if the review is requested from the `stdlib-bot` user:
-      - name: 'Check if review is requested from stdlib-bot'
-        id: check-reviewers
-        run: |
-          # Get the list of reviewers:
-          reviewers=$(jq -r '.pull_request.requested_reviewers | .[] | .login' "$GITHUB_EVENT_PATH")
-
-          # Check if the list of reviewers contains the `stdlib-bot` user:
-          if [[ $reviewers == *"stdlib-bot"* ]]; then
-            echo "is_stdlib_bot=true" >> $GITHUB_OUTPUT
-          else
-            echo "is_stdlib_bot=false" >> $GITHUB_OUTPUT
-          fi
-
       # Configure git:
       - name: 'Configure git'
-        if: steps.check-reviewers.outputs.is_stdlib_bot == 'true'
         run: |
           git config --local user.email "noreply@stdlib.io"
           git config --local user.name "stdlib-bot"
           git fetch --all
 
       # Get list of added files:
       - name: 'Get list of added files'
-        if: steps.check-reviewers.outputs.is_stdlib_bot == 'true'
         id: added-files
         run: |
           page=1
@@ -108,7 +91,6 @@ jobs:
 
       # Check whether the pull request contains a new `README.md` file; if not, exit with a non-zero exit code:
       - name: 'Exit if pull request does not contain a new README.md file'
-        if: steps.check-reviewers.outputs.is_stdlib_bot == 'true'
         run: |
           if [[ ! "${{ steps.added-files.outputs.files }}" =~ "README.md" ]]; then
             echo "Pull request does not contain a new README.md file."
@@ -117,7 +99,6 @@ jobs:
 
       # Check whether the pull request contains files which are required to be present for all packages:
       - name: 'Check whether the pull request contains files which are required to be present for all packages'
-        if: steps.check-reviewers.outputs.is_stdlib_bot == 'true'
         id: check-required-files
         run: |
           # Define a list of required files:
@@ -218,7 +199,6 @@ jobs:
 
       # Create a comment on the pull request informing the user whether the pull request is missing required files:
       - name: 'Create a comment on the pull request informing the user whether the pull request is missing required files'
-        if: steps.check-reviewers.outputs.is_stdlib_bot == 'true'
         # Pin action to full length commit SHA
         uses: peter-evans/create-or-update-comment@71345be0265236311c031f5c7866368bd1eff043 # v4.0.0
         with:

.github/workflows/slash-commands.yml

@@ -0,0 +1,37 @@
+#/
+# @license Apache-2.0
+#
+# Copyright (c) 2024 The Stdlib Authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#/
+
+# Workflow name:
+name: slash-commands
+
+# Workflow triggers:
+on:
+  issue_comment:
+    types: [created, edited]
+
+# Workflow jobs:
+jobs:
+
+  # Define a job for checking for required files:
+  check-files:
+
+    # Define the conditions under which the job should run:
+    if: github.event.issue.pull_request && contains(github.event.comment.body, '/stdlib check-files')
+
+    # Run reusable workflow:
+    uses: ./.github/workflows/check_required_files.yml