👷 Add pre-commit GitHub Action workflow (#413)

Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

Author: tiangolo

.github/workflows/pre-commit.yml

@@ -0,0 +1,85 @@
+name: pre-commit
+
+on:
+  pull_request:
+    types:
+      - opened
+      - synchronize
+
+env:
+  UV_SYSTEM_PYTHON: 1
+  IS_FORK: ${{ github.event.pull_request.head.repo.full_name != github.repository }}
+
+jobs:
+  pre-commit:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Dump GitHub context
+        env:
+          GITHUB_CONTEXT: ${{ toJson(github) }}
+        run: echo "$GITHUB_CONTEXT"
+      - uses: actions/checkout@v5
+        name: Checkout PR for own repo
+        if: env.IS_FORK == 'false'
+        with:
+          # To be able to commit it needs more than the last commit
+          ref: ${{ github.head_ref }}
+          # A token other than the default GITHUB_TOKEN is needed to be able to trigger CI
+          token: ${{ secrets.PRE_COMMIT }}
+      # pre-commit lite ci needs the default checkout configs to work
+      - uses: actions/checkout@v5
+        name: Checkout PR for fork
+        if: env.IS_FORK == 'true'
+      - name: Set up Python
+        uses: actions/setup-python@v6
+        with:
+          python-version: "3.14"
+      - name: Setup uv
+        uses: astral-sh/setup-uv@v7
+        with:
+          cache-dependency-glob: |
+            requirements**.txt
+            pyproject.toml
+            uv.lock
+      - name: Run pre-commit
+        id: precommit
+        run: |
+          # Fetch the base branch for comparison
+          git fetch origin ${{ github.base_ref }}
+          uvx pre-commit run --from-ref origin/${{ github.base_ref }} --to-ref HEAD --show-diff-on-failure
+        continue-on-error: true
+      - name: Commit and push changes
+        if: env.IS_FORK == 'false'
+        run: |
+          git config user.name "github-actions[bot]"
+          git config user.email "github-actions[bot]@users.noreply.github.com"
+          git add -A
+          if git diff --staged --quiet; then
+            echo "No changes to commit"
+          else
+            git commit -m "🎨 Auto format"
+            git push
+          fi
+      - uses: pre-commit-ci/[email protected]
+        if: env.IS_FORK == 'true'
+        with:
+          msg: 🎨 Auto format
+      - name: Error out on pre-commit errors
+        if: steps.precommit.outcome == 'failure'
+        run: exit 1
+
+  # https://github.com/marketplace/actions/alls-green#why
+  alls-green:  # This job does nothing and is only used for the branch protection
+    if: always()
+    needs:
+      - pre-commit
+    runs-on: ubuntu-latest
+    steps:
+      - name: Dump GitHub context
+        env:
+          GITHUB_CONTEXT: ${{ toJson(github) }}
+        run: echo "$GITHUB_CONTEXT"
+      - name: Decide whether the needed jobs succeeded or failed
+        uses: re-actors/alls-green@release/v1
+        with:
+          jobs: ${{ toJSON(needs) }}

.pre-commit-config.yaml

@@ -1,7 +1,5 @@
 # See https://pre-commit.com for more information
 # See https://pre-commit.com/hooks.html for more hooks
-default_language_version:
-    python: python3.10
 repos:
 -   repo: https://github.com/pre-commit/pre-commit-hooks
     rev: v6.0.0
@@ -20,6 +18,3 @@ repos:
         args:
         - --fix
     -   id: ruff-format
-ci:
-    autofix_commit_msg: 🎨 [pre-commit.ci] Auto format from pre-commit.com hooks
-    autoupdate_commit_msg: ⬆ [pre-commit.ci] pre-commit autoupdate