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

# This script is invoked by adnanh/webhook when a matching hook is triggered.
# It updates the git checkout in /app/site to origin/$GIT_BRANCH.
# Hugo server runs separately and watches the files, so no explicit hugo build is required.

REPO_DIR="/app/site"
GIT_BRANCH="${GIT_BRANCH:-main}"

if [ ! -d "$REPO_DIR/.git" ]; then
  echo "Repository not found at $REPO_DIR; nothing to update."
  exit 1
fi

echo "Updating repository in $REPO_DIR to origin/$GIT_BRANCH"
cd "$REPO_DIR"

# Fetch and reset
git fetch origin "$GIT_BRANCH" --depth=1 || true
git reset --hard "origin/$GIT_BRANCH"

# Optionally, you can clear caches or perform other tasks here.
echo "Update completed at $(date -u +%Y-%m-%dT%H:%M:%SZ)"
exit 0