#!/usr/bin/env bash
set -euo pipefail

: "${FILE:?FILE is required}"
: "${COMMIT_MESSAGE:?COMMIT_MESSAGE is required}"

git config user.name "gitea actions"
git config user.email "actions@localhost"

# schedule runs can checkout a detached HEAD, so create a throwaway branch
branch="automation/update-$(date +%s)"
git switch -C "$branch"

git add "$FILE"

if git diff --cached --quiet; then
  echo "No staged changes for ${FILE}; skipping commit"
  exit 0
fi

git commit -m "$COMMIT_MESSAGE"

for attempt in 1 2 3 4 5; do
  if git push origin HEAD:main; then
    echo "Pushed to main"
    exit 0
  fi

  echo "Push failed (attempt ${attempt}); rebasing on origin/main and retrying"
  git fetch origin main
  git rebase origin/main
  sleep 2
done

echo "Failed to push update after retries"
exit 1