build: create regenerate.sh (#334)

Author: OrKoN

tools/regenerate.sh

@@ -0,0 +1,102 @@
+#!/bin/bash
+
+# @license
+# Copyright 2026 Google Inc.
+# SPDX-License-Identifier: Apache-2.0
+
+set -e
+
+# 1. Verify git working directory is clean before we start
+if [ -n "$(git status --porcelain)" ]; then
+  echo "Error: Your git working directory is not clean." >&2
+  echo "Please commit, stash, or discard your changes before running this script." >&2
+  exit 1
+fi
+
+# 2. Check requirements
+if ! command -v gh &> /dev/null; then
+  echo "Error: 'gh' CLI is required but not installed." >&2
+  echo "Please install it first (e.g. 'brew install gh')." >&2
+  exit 1
+fi
+
+if ! gh auth status &> /dev/null; then
+  echo "Error: You are not authenticated with 'gh' CLI." >&2
+  echo "Please run 'gh auth login' first." >&2
+  exit 1
+fi
+if command -v cddlconv &> /dev/null; then
+  CDDLCONV_VERSION=$(cddlconv --version 2>&1 | awk '{print $2}')
+  if [ "$CDDLCONV_VERSION" != "0.1.7" ]; then
+    echo "Warning: 'cddlconv' version is $CDDLCONV_VERSION, but 0.1.7 is required." >&2
+    echo "You can install the correct version using: cargo install cddlconv@0.1.7" >&2
+  fi
+else
+  echo "Warning: 'cddlconv' is not installed or not in PATH." >&2
+  echo "The build step might fail. You can install it using: cargo install cddlconv@0.1.7" >&2
+fi
+
+# 3. Run build/regeneration steps
+echo "Running build and regeneration..."
+npm test
+
+# 4. Check if any changes were produced
+CHANGES=$(git status --porcelain)
+if [ -z "$CHANGES" ]; then
+  echo "No changes detected. Webdriver BiDi types are up to date!"
+  exit 0
+fi
+
+echo "Changes detected:"
+echo "$CHANGES"
+
+# 5. Check out a branch for regeneration
+BRANCH_NAME="regenerate"
+CURRENT_BRANCH=$(git branch --show-current)
+
+echo "Creating and switching to branch '$BRANCH_NAME'..."
+git checkout -B "$BRANCH_NAME"
+
+# 6. Commit the changes
+echo "Committing changes..."
+# Stage all changes (including untracked/newly generated files)
+git add -A
+
+# Commit using the user's configured git user
+git commit -m "fix: re-generate types based on spec updates"
+
+# 7. Push the branch
+echo "Pushing '$BRANCH_NAME' branch to remote..."
+git push -f origin "$BRANCH_NAME"
+
+# 8. Create or update the Pull Request
+echo "Creating/updating Pull Request..."
+
+PR_TITLE="fix: re-generate types based on spec updates"
+PR_BODY="Automatically generated by tools/regenerate.sh"
+
+# Check if a PR already exists for this head branch
+EXISTING_PR=$(gh pr list --head "$BRANCH_NAME" --json number --jq '.[0].number')
+
+if [ -n "$EXISTING_PR" ]; then
+  PR_URL=$(gh pr view "$EXISTING_PR" --json url --jq '.url')
+  echo "Pull Request #$EXISTING_PR already exists for branch '$BRANCH_NAME'."
+  echo "The branch has been force-pushed and the PR is now updated."
+  echo "PR URL: $PR_URL"
+else
+  # Create a new PR
+  PR_URL=$(gh pr create \
+    --title "$PR_TITLE" \
+    --body "$PR_BODY" \
+    --head "$BRANCH_NAME" \
+    --base main)
+  echo "Created Pull Request: $PR_URL"
+fi
+
+# 9. Switch back to original branch
+if [ -n "$CURRENT_BRANCH" ] && [ "$CURRENT_BRANCH" != "$BRANCH_NAME" ]; then
+  echo "Switching back to your original branch: $CURRENT_BRANCH..."
+  git checkout "$CURRENT_BRANCH"
+fi
+
+echo "Regeneration automation complete!"