#!/usr/bin/env bash
# 部署脚本公共函数（LF 换行）

# 安全拉取远程代码：有本地修改时先 stash，pull 失败不中断部署
git_update_safe() {
  local repo_dir="${1:?}"
  cd "$repo_dir"

  if [ ! -d .git ]; then
    return 0
  fi

  if [ "${DEPLOY_SKIP_GIT_PULL:-}" = "1" ]; then
    echo "    已跳过 git pull (DEPLOY_SKIP_GIT_PULL=1)"
    return 0
  fi

  local stashed=0
  if ! git diff --quiet 2>/dev/null || ! git diff --cached --quiet 2>/dev/null; then
    echo "    检测到未提交修改，暂存到 git stash..."
    if git stash push -m "deploy-auto-$(date +%Y%m%d%H%M%S)"; then
      stashed=1
    else
      echo "    警告: stash 失败，将尝试直接 pull"
    fi
  fi

  if git pull --rebase; then
    echo "    代码已更新"
  else
    echo "    警告: git pull 失败，使用当前目录代码继续部署"
  fi

  if [ "$stashed" = 1 ]; then
    echo "    恢复本地修改 (git stash pop)..."
    git stash pop || echo "    提示: stash 恢复冲突时可手动处理: git stash list"
  fi
}