add PR checks

.github/workflows/update-db.yml

@@ -1,8 +1,14 @@
-name: Update DB
+---
+name: Update
 
 on:
+  pull_request:
+    branches: [master, nightly]
+    types: [opened, synchronize, reopened]
+  push:
+    branches: [master, nightly]
   schedule:
-  - cron: '0 0 * * *'  # every day at midnight UTC
+    - cron: '0 0 * * *'  # every day at midnight
   workflow_dispatch:
 
 jobs:
@@ -39,11 +45,11 @@ jobs:
         run: |
           # empty contents to ensure deleted igdb are removed
           rm -f -r ./gh-pages/*
-          
+
           # copy template back to pages
           cp -f -r ./gh-pages-template/* ./gh-pages/
 
-      - name: Update db
+      - name: Update
         working-directory: gh-pages
         run: |
           python ../update_db.py \
@@ -51,7 +57,23 @@ jobs:
           --twitch_client_secret ${{ secrets.TWITCH_CLIENT_SECRET }} \
           --youtube_api_key ${{ secrets.YOUTUBE_API_KEY }}
 
+      - name: Prepare Artifacts  # uploading artifacts will fail if not zipped due to very large quantity of files
+        shell: bash
+        if: ${{ github.event_name == 'pull_request' || github.event_name == 'workflow_dispatch' }}
+        run: |
+          7z a "./gh-pages.zip" "gh-pages"
+
+      - name: Upload Artifacts
+        if: ${{ github.event_name == 'pull_request' || github.event_name == 'workflow_dispatch' }}
+        uses: actions/upload-artifact@v3
+        with:
+          name: gh-pages
+          if-no-files-found: error  # 'warn' or 'ignore' are also available, defaults to `warn`
+          path: |
+            ${{ github.workspace }}/gh-pages.zip
+
       - name: Deploy to gh-pages
+        if: ${{ (github.event_name == 'push' && github.ref == 'refs/heads/master') || (github.event_name == 'schedule' || github.event_name == 'workflow_dispatch') }}  # yamllint disable-line rule:line-length
         uses: actions-js/push@v1.3
         with:
           github_token: ${{ secrets.GH_BOT_TOKEN }}