package services

import (
	"context"
	"fmt"
	"net"
	"strings"
	"time"

	"github.com/shadow1ng/fscan/common"
	"github.com/shadow1ng/fscan/plugins"
)

type ActiveMQPlugin struct {
	plugins.BasePlugin
}

func NewActiveMQPlugin() *ActiveMQPlugin {
	return &ActiveMQPlugin{
		BasePlugin: plugins.NewBasePlugin("activemq"),
	}
}



func (p *ActiveMQPlugin) Scan(ctx context.Context, info *common.HostInfo) *ScanResult {
	target := fmt.Sprintf("%s:%s", info.Host, info.Ports)

	// 如果禁用暴力破解，只做服务识别
	if common.DisableBrute {
		return p.identifyService(info)
	}

	credentials := GenerateCredentials("activemq")
	if len(credentials) == 0 {
		return &ScanResult{
			Success: false,
			Service: "activemq",
			Error:   fmt.Errorf("没有可用的测试凭据"),
		}
	}

	for _, cred := range credentials {
		if p.testCredential(ctx, info, cred) {
			common.LogSuccess(fmt.Sprintf("ActiveMQ %s %s:%s", target, cred.Username, cred.Password))

			return &ScanResult{
				Success:  true,
				Service:  "activemq",
				Username: cred.Username,
				Password: cred.Password,
			}
		}
	}

	return &ScanResult{
		Success: false,
		Service: "activemq",
		Error:   fmt.Errorf("未发现弱密码"),
	}
}

func (p *ActiveMQPlugin) testCredential(ctx context.Context, info *common.HostInfo, cred Credential) bool {
	target := fmt.Sprintf("%s:%s", info.Host, info.Ports)
	timeout := time.Duration(common.Timeout) * time.Second

	conn, err := common.WrapperTcpWithTimeout("tcp", target, timeout)
	if err != nil {
		return false
	}
	defer conn.Close()

	return p.authenticateSTOMP(conn, cred.Username, cred.Password)
}

func (p *ActiveMQPlugin) authenticateSTOMP(conn net.Conn, username, password string) bool {
	timeout := time.Duration(common.Timeout) * time.Second

	stompConnect := fmt.Sprintf("CONNECT\naccept-version:1.0,1.1,1.2\nhost:/\nlogin:%s\npasscode:%s\n\n\x00",
		username, password)

	conn.SetWriteDeadline(time.Now().Add(timeout))
	if _, err := conn.Write([]byte(stompConnect)); err != nil {
		return false
	}

	conn.SetReadDeadline(time.Now().Add(timeout))
	response := make([]byte, 1024)
	n, err := conn.Read(response)
	if err != nil || n == 0 {
		return false
	}

	responseStr := string(response[:n])

	if strings.Contains(responseStr, "CONNECTED") {
		return true
	} else if strings.Contains(responseStr, "ERROR") {
		return false
	}

	return false
}

func (p *ActiveMQPlugin) identifyService(info *common.HostInfo) *ScanResult {
	target := fmt.Sprintf("%s:%s", info.Host, info.Ports)
	timeout := time.Duration(common.Timeout) * time.Second

	conn, err := common.WrapperTcpWithTimeout("tcp", target, timeout)
	if err != nil {
		return &ScanResult{
			Success: false,
			Service: "activemq",
			Error:   err,
		}
	}
	defer conn.Close()

	stompConnect := "CONNECT\naccept-version:1.0,1.1,1.2\nhost:/\n\n\x00"
	
	conn.SetWriteDeadline(time.Now().Add(timeout))
	if _, err := conn.Write([]byte(stompConnect)); err != nil {
		return &ScanResult{
			Success: false,
			Service: "activemq",
			Error:   fmt.Errorf("无法发送STOMP请求: %v", err),
		}
	}

	conn.SetReadDeadline(time.Now().Add(timeout))
	response := make([]byte, 512)
	n, err := conn.Read(response)
	if err != nil || n == 0 {
		return &ScanResult{
			Success: false,
			Service: "activemq",
			Error:   fmt.Errorf("无法读取响应"),
		}
	}

	responseStr := string(response[:n])

	if strings.Contains(responseStr, "CONNECTED") || strings.Contains(responseStr, "ERROR") {
		banner := "ActiveMQ STOMP"
		common.LogSuccess(fmt.Sprintf("ActiveMQ %s %s", target, banner))
		
		return &ScanResult{
			Success: true,
			Service: "activemq",
			Banner:  banner,
		}
	}

	return &ScanResult{
		Success: false,
		Service: "activemq",
		Error:   fmt.Errorf("无法识别为ActiveMQ STOMP服务"),
	}
}


func init() {
	// 使用高效注册方式：直接传递端口信息，避免实例创建
	RegisterPluginWithPorts("activemq", func() Plugin {
		return NewActiveMQPlugin()
	}, []int{61616, 61617, 61618, 8161})
}