#!/usr/bin/env bash
# ============================================================================
# 视频项目一键启停脚本
# 管理范围：video-api.service(后端) + Docker 容器 mysql8 / my-redis
# 不含 nginx（系统组件，可能服务其他站点；项目停止后接口 502 属正常）
# 用法：bash project-ctl.sh {start|stop|restart|status}
# ============================================================================
set -uo pipefail

SERVICE="video-api.service"
CONTAINERS=("mysql8" "my-redis")

wait_mysql() {
  echo -n "   等待 MySQL 就绪..."
  for i in $(seq 1 30); do
    if docker exec mysql8 mysqladmin ping -h 127.0.0.1 -uroot -p256kb.cn >/dev/null 2>&1; then
      echo " OK"; return 0
    fi
    sleep 1
  done
  echo " 超时(30s)，请检查容器日志"; return 1
}

wait_redis() {
  echo -n "   等待 Redis 就绪..."
  for i in $(seq 1 15); do
    if [ "$(docker exec my-redis redis-cli ping 2>/dev/null)" = "PONG" ]; then
      echo " OK"; return 0
    fi
    sleep 1
  done
  echo " 超时(15s)"; return 1
}

do_start() {
  echo "▶ 启动 Docker 容器: ${CONTAINERS[*]}"
  docker start "${CONTAINERS[@]}" >/dev/null
  wait_mysql && wait_redis || return 1

  echo "▶ 启动后端服务 $SERVICE（并恢复开机自启）"
  systemctl enable --now "$SERVICE"
  sleep 2
  local code
  code=$(curl -s -o /dev/null -w "%{http_code}" http://127.0.0.1:8000/api/v1/app/version || true)
  if [ "$code" = "200" ]; then
    echo "✅ 项目已启动（接口健康检查 200）"
  else
    echo "⚠️ 服务已启动但健康检查返回 $code，请查看: journalctl -u $SERVICE -n 50"
  fi
}

do_stop() {
  echo "▶ 停止后端服务 $SERVICE（并取消开机自启，防止重启后自动拉起）"
  systemctl disable --now "$SERVICE" 2>/dev/null || true

  echo "▶ 停止 Docker 容器: ${CONTAINERS[*]}"
  docker stop "${CONTAINERS[@]}" >/dev/null
  echo "   （容器策略为 unless-stopped，手动停止后服务器重启也不会自动恢复）"
  echo "✅ 项目已停止"
}

do_status() {
  echo "── 后端服务 ──"
  systemctl status "$SERVICE" --no-pager -l | head -4
  echo
  echo "── Docker 容器 ──"
  docker ps -a --format "table {{.Names}}\t{{.Status}}\t{{.Ports}}" | grep -E "NAMES|mysql8|my-redis"
  echo
  echo "── 接口探测 ──"
  local code
  code=$(curl -s -o /dev/null -w "%{http_code}" --max-time 3 http://127.0.0.1:8000/api/v1/app/version || true)
  echo "   /api/v1/app/version → HTTP $code"
}

case "${1:-}" in
  start)   do_start ;;
  stop)    do_stop ;;
  restart) do_stop; echo; do_start ;;
  status)  do_status ;;
  *)
    echo "用法: bash $0 {start|stop|restart|status}"
    exit 1
    ;;
esac