package services

import (
	"context"
	"fmt"
	"io"
	"net/http"
	"strings"
	"time"

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

type RabbitMQPlugin struct {
	plugins.BasePlugin
}

func NewRabbitMQPlugin() *RabbitMQPlugin {
	return &RabbitMQPlugin{
		BasePlugin: plugins.NewBasePlugin("rabbitmq"),
	}
}



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

	if common.DisableBrute {
		return p.identifyService(ctx, info)
	}

	if info.Ports == "5672" || info.Ports == "5671" {
		return p.testAMQPProtocol(ctx, info)
	}

	credentials := GenerateCredentials("rabbitmq")
	if len(credentials) == 0 {
		return &ScanResult{
			Success: false,
			Service: "rabbitmq",
			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("RabbitMQ %s %s:%s", target, cred.Username, cred.Password))

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

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


func (p *RabbitMQPlugin) testAMQPProtocol(ctx context.Context, info *common.HostInfo) *ScanResult {
	return &ScanResult{
		Success: true,
		Service: "rabbitmq",
		Banner:  "RabbitMQ AMQP",
	}
}

func (p *RabbitMQPlugin) testCredential(ctx context.Context, info *common.HostInfo, cred Credential) bool {
	baseURL := fmt.Sprintf("http://%s:%s", info.Host, info.Ports)
	
	client := &http.Client{
		Timeout: time.Duration(common.Timeout) * time.Second,
	}

	req, err := http.NewRequestWithContext(ctx, "GET", baseURL+"/api/overview", nil)
	if err != nil {
		return false
	}

	req.SetBasicAuth(cred.Username, cred.Password)
	req.Header.Set("Content-Type", "application/json")

	resp, err := client.Do(req)
	if err != nil {
		return false
	}
	defer resp.Body.Close()

	return resp.StatusCode == 200
}








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

	if info.Ports == "5672" || info.Ports == "5671" {
		return &ScanResult{
			Success: true,
			Service: "rabbitmq",
			Banner:  "RabbitMQ AMQP",
		}
	}

	baseURL := fmt.Sprintf("http://%s:%s", info.Host, info.Ports)
	
	client := &http.Client{
		Timeout: time.Duration(common.Timeout) * time.Second,
	}

	req, err := http.NewRequestWithContext(ctx, "GET", baseURL, nil)
	if err != nil {
		return &ScanResult{
			Success: false,
			Service: "rabbitmq",
			Error:   err,
		}
	}

	resp, err := client.Do(req)
	if err != nil {
		return &ScanResult{
			Success: false,
			Service: "rabbitmq",
			Error:   err,
		}
	}
	defer resp.Body.Close()

	var banner string
	if resp.StatusCode == 200 || resp.StatusCode == 401 {
		body, _ := io.ReadAll(resp.Body)
		bodyStr := strings.ToLower(string(body))
		
		if strings.Contains(bodyStr, "rabbitmq") {
			banner = "RabbitMQ"
		} else if strings.Contains(bodyStr, "management") {
			banner = "RabbitMQ"
		} else {
			banner = "RabbitMQ"
		}
	} else {
		return &ScanResult{
			Success: false,
			Service: "rabbitmq",
			Error:   fmt.Errorf("无法识别为RabbitMQ服务"),
		}
	}

	common.LogSuccess(fmt.Sprintf("RabbitMQ %s %s", target, banner))

	return &ScanResult{
		Success: true,
		Service: "rabbitmq",
		Banner:  banner,
	}
}

// init 自动注册插件
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("rabbitmq", func() Plugin {
		return NewRabbitMQPlugin()
	}, []int{5672, 15672, 5671})
}