#!/usr/bin/env bash
# =============================================================================
#  stop-frontend.sh — 停止前端开发服务器
#
#  用法:
#    ./stop-frontend.sh           # 停止全部前端服务
#    ./stop-frontend.sh <project> # 只停止指定项目
#
#  可用项目: pc, meetingh5, h5, cms, build-cms, build-down
# =============================================================================
set -euo pipefail
source "$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)/common.sh"
init_dirs
init_script_log       # ← 脚本执行日志

FE_PROJECTS=(pc meetingh5 h5 cms build-cms build-down)
TARGET="${1:-all}"

declare -A FE_PORT_NUM=(
  [pc]="5173"
  [meetingh5]="5188"
  [h5]="3003"
  [cms]="8001"
  [build-cms]="8002"
  [build-down]="8003"
)

_stop_fe() {
  local name="$1"
  local pidfile="$PID_DIR/fe-${name}.pid"
  if [[ -f "$pidfile" ]]; then
    local pid; pid=$(cat "$pidfile")
    if kill -0 "$pid" 2>/dev/null; then
      # 只杀该前端的进程树，避免同一脚本启动的其它前端共享进程组时被误杀。
      _kill_tree "$pid" TERM
      sleep 1
      if kill -0 "$pid" 2>/dev/null; then
        _kill_tree "$pid" KILL
      fi
      success "$name 已停止 (PID=$pid)"
    else
      warn "$name 进程不存在（可能已退出）"
    fi
    rm -f "$pidfile"
  else
    warn "$name 没有 PID 记录（未运行）"
  fi

  _stop_fe_port "$name"
}

_kill_tree() {
  local pid="$1" signal="${2:-TERM}"
  local children child
  children=$(pgrep -P "$pid" 2>/dev/null || true)
  for child in $children; do
    _kill_tree "$child" "$signal"
  done
  kill "-$signal" "$pid" 2>/dev/null || true
}

_stop_fe_port() {
  local name="$1"
  local port="${FE_PORT_NUM[$name]}"
  local pids pid

  pids="$(lsof -tiTCP:"$port" -sTCP:LISTEN 2>/dev/null || true)"
  if [[ -z "$pids" ]]; then
    return 0
  fi

  warn "$name 端口 $port 仍被占用，按端口清理监听进程: $pids"
  for pid in $pids; do
    _kill_tree "$pid" TERM
  done

  sleep 1
  for pid in $pids; do
    if kill -0 "$pid" 2>/dev/null; then
      _kill_tree "$pid" KILL
    fi
  done

  pids="$(lsof -tiTCP:"$port" -sTCP:LISTEN 2>/dev/null || true)"
  if [[ -n "$pids" ]]; then
    error "$name 端口 $port 清理失败，仍被占用: $pids"
    return 1
  fi

  success "$name 端口 $port 已释放"
}

if [[ "$TARGET" == "all" ]]; then
  step "停止全部前端开发服务器"
  for proj in "${FE_PROJECTS[@]}"; do
    _stop_fe "$proj"
  done
  success "所有前端服务已停止"
else
  local_valid=false
  for p in "${FE_PROJECTS[@]}"; do
    [[ "$p" == "$TARGET" ]] && local_valid=true && break
  done
  if ! $local_valid; then
    error "未知项目: $TARGET"
    echo "可用: ${FE_PROJECTS[*]}"
    exit 1
  fi
  step "停止: $TARGET"
  _stop_fe "$TARGET"
fi