#!/bin/bash
# 3588AdminBackend 状态检查脚本

APP_NAME="managerd"
SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
APP_DIR="$(cd "$SCRIPT_DIR/.." && pwd)"
PID_FILE="$APP_DIR/$APP_NAME.pid"
CONFIG_PATH="$APP_DIR/config/managerd.json"
LOG_DIR="$APP_DIR/logs"
BIN_PATH="$APP_DIR/bin/$APP_NAME"

echo "========== 3588AdminBackend 状态 =========="
echo ""
echo "基本信息:"
echo "  应用目录: $APP_DIR"
echo "  二进制文件: $BIN_PATH"
echo "  配置文件: $CONFIG_PATH"
echo "  日志目录: $LOG_DIR"

# 检查二进制文件
if [ -f "$BIN_PATH" ]; then
    echo "  二进制状态: ✅ 存在"
    # 显示版本信息（如果程序支持）
    VERSION=$($BIN_PATH -version 2>/dev/null || echo "")
    if [ -n "$VERSION" ]; then
        echo "  版本: $VERSION"
    fi
else
    echo "  二进制状态: ❌ 不存在"
fi

# 检查配置文件
if [ -f "$CONFIG_PATH" ]; then
    echo "  配置文件: ✅ 存在"
    # 显示关键配置
    if command -v python3 &> /dev/null; then
        LISTEN=$(python3 -c "import json; print(json.load(open('$CONFIG_PATH')).get('listen', 'N/A'))" 2>/dev/null)
        DISCOVERY_PORT=$(python3 -c "import json; print(json.load(open('$CONFIG_PATH')).get('discovery_port', 'N/A'))" 2>/dev/null)
        echo "  监听地址: $LISTEN"
        echo "  发现端口: $DISCOVERY_PORT (UDP)"
    fi
else
    echo "  配置文件: ❌ 不存在"
fi

echo ""
echo "运行状态:"

# 检查进程
if [ -f "$PID_FILE" ]; then
    PID=$(cat "$PID_FILE")
    if ps -p "$PID" > /dev/null 2>&1; then
        echo "  进程状态: 🟢 运行中"
        echo "  PID: $PID"
        
        # 获取进程详细信息
        if command -v ps &> /dev/null; then
            echo ""
            echo "进程详情:"
            ps -p "$PID" -o pid,ppid,pcpu,pmem,rss,vsz,etime,cmd --headers 2>/dev/null | while read line; do
                echo "    $line"
            done
        fi
        
        # 检查端口监听
        echo ""
        echo "网络监听:"
        if command -v ss &> /dev/null; then
            LISTENERS=$(ss -tlnp | grep "$PID" || true)
            if [ -n "$LISTENERS" ]; then
                echo "$LISTENERS" | while read line; do
                    echo "    TCP: $line"
                done
            fi
            UDP_LISTENERS=$(ss -ulnp | grep "$PID" || true)
            if [ -n "$UDP_LISTENERS" ]; then
                echo "$UDP_LISTENERS" | while read line; do
                    echo "    UDP: $line"
                done
            fi
        elif command -v netstat &> /dev/null; then
            LISTENERS=$(netstat -tlnp 2>/dev/null | grep "$PID/" || true)
            if [ -n "$LISTENERS" ]; then
                echo "$LISTENERS" | while read line; do
                    echo "    $line"
                done
            fi
        fi
        
        # 测试 API
        echo ""
        echo "API 测试:"
        if command -v curl &> /dev/null; then
            # 从配置文件中获取监听地址
            if [ -f "$CONFIG_PATH" ]; then
                API_URL="http://127.0.0.1:18080/api/devices"
                HTTP_CODE=$(curl -s -o /dev/null -w "%{http_code}" "$API_URL" 2>/dev/null || echo "000")
                if [ "$HTTP_CODE" = "200" ] || [ "$HTTP_CODE" = "401" ]; then
                    echo "    ✅ HTTP API 响应正常 (HTTP $HTTP_CODE)"
                elif [ "$HTTP_CODE" = "000" ]; then
                    echo "    ⚠️  无法连接 HTTP API"
                else
                    echo "    ℹ️  HTTP API 响应: $HTTP_CODE"
                fi
            fi
        fi
        
    else
        echo "  进程状态: 🔴 未运行 (PID 文件存在但进程不存在)"
        echo "  建议: 删除过期的 PID 文件"
    fi
else
    # 尝试直接查找进程
    PID=$(pgrep -f "^$BIN_PATH" | head -1)
    if [ -n "$PID" ]; then
        echo "  进程状态: 🟡 运行中 (无 PID 文件，PID: $PID)"
        echo "  建议: 重新创建 PID 文件: echo $PID > $PID_FILE"
    else
        echo "  进程状态: ⚫ 未运行"
    fi
fi

# 日志信息
echo ""
echo "日志信息:"
if [ -d "$LOG_DIR" ]; then
    LOG_FILES=$(ls -1 "$LOG_DIR"/*.log 2>/dev/null | head -5)
    if [ -n "$LOG_FILES" ]; then
        echo "  日志文件:"
        ls -lh "$LOG_DIR"/*.log 2>/dev/null | tail -5 | while read line; do
            echo "    $line"
        done
        
        # 显示最后几行日志
        NEWEST_LOG=$(ls -t "$LOG_DIR"/*.log 2>/dev/null | head -1)
        if [ -n "$NEWEST_LOG" ]; then
            echo ""
            echo "  最新日志 ($NEWEST_LOG):"
            tail -n 3 "$NEWEST_LOG" | while read line; do
                echo "    $line"
            done
        fi
    else
        echo "  无日志文件"
    fi
else
    echo "  日志目录不存在"
fi

echo ""
echo "========== 操作命令 =========="
echo "  启动: $SCRIPT_DIR/start.sh"
echo "  停止: $SCRIPT_DIR/stop.sh"
echo "  查看日志: tail -f $LOG_DIR/$APP_NAME.log"