enhance generate bindings ci

Author: quinnj

.github/workflows/generate_bindings.yml

@@ -1,51 +1,56 @@
 name: Generate Bindings
 on:
   workflow_dispatch:
-  push:
-    branches: [main]
-    paths:
-      - .github/workflows/generate_bindings.yml
-      - gen/**
   pull_request:
     branches: [main]
     paths:
       - .github/workflows/generate_bindings.yml
-      - gen/**
+      - gen/Project.toml
+
 concurrency:
   group: ${{ github.workflow }}-${{ github.ref || github.run_id }}
   cancel-in-progress: true
+
+permissions:
+  contents: write
+
 jobs:
   generate-bindings:
     name: Generate bindings
     runs-on: ubuntu-22.04
     timeout-minutes: 20
     steps:
-      - uses: actions/checkout@v4
+      - name: Checkout PR branch
+        uses: actions/checkout@v4
+        with:
+          ref: ${{ github.head_ref }}
+          token: ${{ secrets.GITHUB_TOKEN }}
 
       - uses: julia-actions/setup-julia@v1
         with:
           version: "1.10.2"
 
+      - uses: julia-actions/cache@v2
+
       - name: Run the generator
         run: ./gen/generate.sh
 
-      - name: Create Pull Request (on push)
-        if: ${{ github.event_name == 'push' }}
-        uses: peter-evans/create-pull-request@v6
-        with:
-          commit-message: "Regenerate bindings"
-          title: "Regenerate bindings"
-          reviewers: |
-            quinnj
-            Octogonapus
-
-      - name: Create Pull Request (on PR)
-        if: ${{ github.event_name == 'pull_request' }}
-        uses: peter-evans/create-pull-request@v6
-        with:
-          base: ${{ github.head_ref }}
-          commit-message: "Regenerate bindings"
-          title: "Regenerate bindings"
-          reviewers: |
-            quinnj
-            Octogonapus
+      - name: Check for changes
+        id: check_diff
+        run: |
+          if git diff --quiet; then
+            echo "No changes detected."
+            echo "changed=false" >> $GITHUB_ENV
+          else
+            echo "Changes detected."
+            echo "changed=true" >> $GITHUB_ENV
+          fi
+
+      - name: Commit and Push Changes
+        if: env.changed == 'true'
+        run: |
+          git config --global user.name "github-actions[bot]"
+          git config --global user.email "github-actions[bot]@users.noreply.github.com"
+          git add .
+          git commit -m "Regenerate bindings"
+          git push origin ${{ github.head_ref }}