Convert stable update script to create a PR instead of updating a tag.

scripts/create_customdc_stable_update_pr.sh

@@ -0,0 +1,104 @@
+#!/bin/bash
+# Copyright 2024 Google LLC
+#
+# 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.
+
+# Opens a PR to merge new changes into the custom DC stable branch.
+
+set -e
+
+MASTER_BRANCH=master
+STABLE_BRANCH=customdc_stable
+UPDATE_BRANCH=cdcStableUpdate
+
+# Check if GitHub CLI is installed
+if ! command -v gh &> /dev/null; then
+  echo "GitHub CLI is not installed. Please install it to continue."
+  echo "You can find installation instructions at https://cli.github.com"
+  exit 1
+fi
+
+# Check if the user is authorized with GitHub CLI
+if ! gh auth status &> /dev/null; then
+  echo "You are not logged in to GitHub CLI."
+  echo "Please run 'gh auth login' to authenticate."
+  exit 1
+fi
+
+# Check if GitHub CLI default repository is set
+if gh repo set-default --view 2>&1 >/dev/null | grep "no default repository"; then
+  # No default repository is set for GitHub CLI.
+  # We don't have to print an error message because the above already prints one.
+  echo "Choose your *forked repo* as the default."
+  exit 1
+fi
+
+# Find the remote associated with the main repo
+upstream_name=$(git remote -v | grep "datacommonsorg" | awk '{print $1}' | head -n 1)
+if [ -z "$upstream_name" ]; then
+  echo "No remote found with 'datacommonsorg' in its URL."
+  exit 1
+fi
+echo "Remote for main repo is '${upstream_name}'".
+
+# Find the remote associated with the forked repo
+fork_name=$(git remote -v | grep -v "datacommonsorg" | awk '{print $1}' | head -n 1)
+if [ -z "$fork_name" ]; then
+  echo "No remote found without 'datacommonsorg' in its URL."
+  exit 1
+fi
+echo "Remote for forked repo is '${fork_name}'".
+
+# Check whether a local update branch already exists.
+if git show-ref --verify --quiet "refs/heads/${UPDATE_BRANCH}"; then
+  echo "A local branch named '${UPDATE_BRANCH}' already exists."
+  echo "Delete it, then re-run this script."
+  exit 1
+fi
+
+# Check whether a remote update branch already exists.
+if git ls-remote --heads "$fork_name" "$UPDATE_BRANCH" | grep -q "$UPDATE_BRANCH"; then
+  echo "A branch named '${UPDATE_BRANCH}' already exists on remote '${fork_name}'".
+  echo "Delete it, then re-run this script."
+  exit 1
+fi
+
+# Fetch relevant branches from the main repo
+git fetch $upstream_name $MASTER_BRANCH $STABLE_BRANCH
+
+# Show the user the commits that are in master but not in customdc_stable
+echo ""
+echo "The following commits are in ${MASTER_BRANCH} but not in ${STABLE_BRANCH}:"
+echo ""
+git log --pretty=format:"%h %s" ${upstream_name}/${STABLE_BRANCH}..${upstream_name}/${MASTER_BRANCH} --reverse
+echo ""
+
+# Ask the user to select a commit
+read -p "Enter the commit hash to create the branch from: " commit_hash
+
+# Create a new branch at the selected commit
+git checkout -b "$UPDATE_BRANCH" "$commit_hash"
+
+# Get the current date in YYYY-MM-DD format
+current_date=$(date +%Y-%m-%d)
+
+echo "Creating PR..."
+
+# Open a draft PR using GitHub CLI
+gh pr create \
+  --repo datacommonsorg/website \
+  --base customdc_stable \
+  --head "${fork_name}:${UPDATE_BRANCH}" \
+  --title "$current_date Custom DC stable release" \
+  --body "TODO: Summarize changes since last stable release." \
+  --draft