#!/usr/bin/env bash
# deploy/lib/update.sh — git pull + compose build/up；保留 .env 与 volume
set -e
set -u
if [ -n "${BASH_VERSION:-}" ]; then
  set -o pipefail
fi

LIB_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
# shellcheck source=common.sh
source "${LIB_DIR}/common.sh"

main_update() {
  require_root
  if ! REPO_ROOT="$(resolve_repo_root)"; then
    die "未找到安装目录 ${INSTALL_ROOT}，请先执行「1) 一键部署」"
  fi
  if ! repo_ready "${REPO_ROOT}"; then
    die "安装不完整，请先执行「1) 一键部署」"
  fi

  step "更新 — Docker 环境检测"
  ensure_docker
  step "git pull"
  if [[ -d "${REPO_ROOT}/.git" ]]; then
    git -C "${REPO_ROOT}" fetch --all --prune
    git -C "${REPO_ROOT}" checkout "${GIT_BRANCH}" 2>/dev/null || true
    git -C "${REPO_ROOT}" pull --ff-only origin "${GIT_BRANCH}" \
      || git -C "${REPO_ROOT}" pull --ff-only
  else
    log "警告: 非 git 目录，跳过 pull"
  fi
  # 补全缺失 env key，不覆盖已有
  ensure_dotenv "${REPO_ROOT}"
  compose_up_build
  verify_health || true
  echo ""
  log "更新完成（.env 与 data volume 已保留）"
}

main_update "$@"