package service

import (
	"context"
	"encoding/json"
	"fmt"
	v1 "github.com/go-nunu/nunu-layout-advanced/api/v1"

	"github.com/spf13/cast"
	"strconv"
)

type FormatterService interface {
	FormatBackendData(ctx context.Context, req *v1.GameShieldSubmitRequest) (string, error)
}

func NewFormatterService(
	service *Service,
	gameShieldPublicIpService GameShieldPublicIpService,

) FormatterService {
	return &formatterService{
		Service:                   service,
		gameShieldPublicIpService: gameShieldPublicIpService,
	}
}

type formatterService struct {
	*Service
	gameShieldPublicIpService GameShieldPublicIpService
}

func (service *formatterService) FormatBackendData(ctx context.Context, req *v1.GameShieldSubmitRequest) (string, error) {
	output := make(map[string]map[string]interface{})

	userIp, err := service.gameShieldPublicIpService.GetUserIp(ctx, req.Uid)
	if err != nil {
		return "", err
	}
	if len(req.Data) == 0 {
		return "", fmt.Errorf("data is required")
	}
	// 解析 JSON 数据为 map[string]map[string]interface{}
	var backend map[string]map[string]interface{}
	if err := json.Unmarshal([]byte(req.Data), &backend); err != nil {
		return "", fmt.Errorf("failed to unmarshal req.Data: %w", err)
	}

	for i := 0; i < len(backend); i++ {
		key := "key" + strconv.Itoa(i)

		innerMap, ok := backend[key]
		if !ok {
			continue
		}

		addr := fmt.Sprintf("%s:%s", innerMap["source_machineIP"], cast.ToString(innerMap["connect_port"]))

		itemMap := map[string]interface{}{
			"addr":     []string{addr},
			"protocol": innerMap["protocol"],
		}

		if host, ok := innerMap["host"]; ok && host != "" {
			itemMap["host"] = host
		}

		if innerMap["protocol"] != "udp" {
			if req.Checked == 1 {
				itemMap["agent_addr"] = fmt.Sprintf("%s:%s", innerMap["source_machineIP"], "23350")
			}
			itemMap["proxy_addr"] = userIp + ":32353"
		} else {
			itemMap["proxy_addr"] = ""
			itemMap["udp_session_timeout"] = "300s"
		}

		if sdkPort, ok := innerMap["sdk_port"]; ok {
			itemMap["sdk_port"] = sdkPort
		} else {
			itemMap["sdk_port"] = 0
		}

		output[key] = itemMap
	}

	jsonBytes, err := json.Marshal(output)
	if err != nil {
		return "", err
	}
	return string(jsonBytes), nil
}