package controller

import (
	"encoding/json"
	"fmt"
	"strconv"
	"strings"
	"time"

	"be.ems/src/framework/i18n"
	"be.ems/src/framework/logger"
	"be.ems/src/framework/utils/ctx"
	"be.ems/src/framework/utils/file"
	"be.ems/src/framework/utils/parse"
	"be.ems/src/framework/vo/result"
	"be.ems/src/modules/network_data/model"
	neDataService "be.ems/src/modules/network_data/service"
	neFetchlink "be.ems/src/modules/network_element/fetch_link"
	neService "be.ems/src/modules/network_element/service"
	"github.com/gin-gonic/gin"
	"github.com/gin-gonic/gin/binding"
)

// 实例化控制层 SMFController 结构体
var NewSMF = &SMFController{
	neInfoService:      neService.NewNeInfo,
	cdrEventService:    neDataService.NewCDREventSMF,
	udmUserInfoService: neDataService.NewUDMUserInfo,
}

// 网元SMF
//
// PATH /smf
type SMFController struct {
	neInfoService      *neService.NeInfo          // 网元信息服务
	cdrEventService    *neDataService.CDREventSMF // CDR会话事件服务
	udmUserInfoService *neDataService.UDMUserInfo // UDM用户信息服务
}

// CDR会话列表
//
// GET /cdr/list
func (s *SMFController) CDRList(c *gin.Context) {
	language := ctx.AcceptLanguage(c)
	var querys model.CDREventSMFQuery
	if err := c.ShouldBindQuery(&querys); err != nil {
		c.JSON(400, result.CodeMsg(400, i18n.TKey(language, "app.common.err400")))
		return
	}
	// for multi-tenancy
	querys.UserName = ctx.LoginUserToUserName(c)

	// 查询网元信息 rmUID
	neInfo := s.neInfoService.SelectNeInfoByNeTypeAndNeID(querys.NeType, querys.NeID)
	if neInfo.NeId != querys.NeID || neInfo.IP == "" {
		c.JSON(200, result.ErrMsg(i18n.TKey(language, "app.common.noNEInfo")))
		return
	}
	querys.RmUID = neInfo.RmUID

	// 查询数据
	data := s.cdrEventService.SelectPageMT(querys)
	c.JSON(200, result.Ok(data))
}

// CDR会话删除
//
// DELETE /cdr/:cdrIds
func (s *SMFController) CDRRemove(c *gin.Context) {
	language := ctx.AcceptLanguage(c)
	cdrIds := c.Param("cdrIds")
	if cdrIds == "" {
		c.JSON(400, result.CodeMsg(400, i18n.TKey(language, "app.common.err400")))
		return
	}
	// 处理字符转id数组后去重
	ids := strings.Split(cdrIds, ",")
	uniqueIDs := parse.RemoveDuplicates(ids)
	if len(uniqueIDs) <= 0 {
		c.JSON(200, result.Err(nil))
		return
	}
	rows, err := s.cdrEventService.DeleteByIds(uniqueIDs)
	if err != nil {
		c.JSON(200, result.ErrMsg(i18n.TKey(language, err.Error())))
		return
	}
	msg := i18n.TTemplate(language, "app.common.deleteSuccess", map[string]any{"num": rows})
	c.JSON(200, result.OkMsg(msg))
}

// CDR会话列表导出
//
// POST /cdr/export
func (s *SMFController) CDRExport(c *gin.Context) {
	language := ctx.AcceptLanguage(c)
	// 查询结果，根据查询条件结果，单页最大值限制
	var querys model.CDREventSMFQuery
	if err := c.ShouldBindBodyWith(&querys, binding.JSON); err != nil {
		c.JSON(400, result.CodeMsg(400, i18n.TKey(language, "app.common.err400")))
		return
	}
	// for multi-tenancy
	querys.UserName = ctx.LoginUserToUserName(c)

	// 限制导出数据集
	if querys.PageSize > 10000 {
		querys.PageSize = 10000
	}
	// 查询网元信息 rmUID
	neInfo := s.neInfoService.SelectNeInfoByNeTypeAndNeID(querys.NeType, querys.NeID)
	if neInfo.NeId != querys.NeID || neInfo.IP == "" {
		c.JSON(200, result.ErrMsg(i18n.TKey(language, "app.common.noNEInfo")))
		return
	}
	querys.RmUID = neInfo.RmUID
	data := s.cdrEventService.SelectPageMT(querys)
	if parse.Number(data["total"]) == 0 {
		// 导出数据记录为空
		c.JSON(200, result.ErrMsg(i18n.TKey(language, "app.common.exportEmpty")))
		return
	}
	rows := data["rows"].([]model.CDREventSMF)

	// 导出文件名称
	fileName := fmt.Sprintf("smf_cdr_event_export_%d_%d.xlsx", len(rows), time.Now().UnixMilli())
	// 第一行表头标题
	headerCells := map[string]string{
		"A1": "ID",
		"B1": "Charging ID",
		"C1": "NE Name",
		"D1": "Resource Unique ID",
		"E1": "Subscriber ID Data",
		"F1": "Subscriber ID Type",
		"G1": "Data Volume Uplink",
		"H1": "Data Volume Downlink",
		"I1": "Data Total Volume",
		"J1": "Duration",
		"K1": "Invocation Time",
		"L1": "User Identifier",
		"M1": "SSC Mode",
		"N1": "DNN ID",
		"O1": "PDU Type",
		"P1": "RAT Type",
		"Q1": "PDU IPv4 Address",
		"R1": "Network Function IPv4",
		"S1": "PDU IPv6 Address Swith Prefix",
		"T1": "Record Network Function ID",
		"U1": "Record Type",
		"V1": "Record Opening Time",
		"W1": "Tenant Name", // for multi-tenancy
	}
	// 从第二行开始的数据
	dataCells := make([]map[string]any, 0)

	for i, row := range rows {
		idx := strconv.Itoa(i + 2)
		// 解析 JSON 字符串为 map
		var cdrJSON map[string]interface{}
		err := json.Unmarshal([]byte(row.CDRJSONStr), &cdrJSON)
		if err != nil {
			logger.Warnf("CDRExport Error parsing JSON: %s", err.Error())
			continue
		}
		// 计费ID
		chargingID := ""
		if v, ok := cdrJSON["chargingID"]; ok && v != nil {
			chargingID = fmt.Sprint(parse.Number(v))
		}
		// 订阅 ID 类型
		subscriptionIDType := "-"
		// 订阅 ID 数据
		subscriptionIDData := "-"
		if v, ok := cdrJSON["subscriberIdentifier"]; ok && v != nil {
			if sub, subOk := v.(map[string]any); subOk && sub != nil {
				subscriptionIDType = sub["subscriptionIDType"].(string)
				subscriptionIDData = sub["subscriptionIDData"].(string)
			}
		}

		// 网络功能 IPv4 地址
		networkFunctionIPv4Address := ""
		if v, ok := cdrJSON["nFunctionConsumerInformation"]; ok && v != nil {
			if conInfo, conInfoOk := v.(map[string]any); conInfoOk && conInfo != nil {
				networkFunctionIPv4Address = conInfo["networkFunctionIPv4Address"].(string)
			}
		}

		// 数据量上行链路
		dataVolumeUplink := []string{}
		// 数据量下行链路
		dataVolumeDownlink := []string{}
		// 数据总量
		dataTotalVolume := []string{}

		if v, ok := cdrJSON["listOfMultipleUnitUsage"]; ok && v != nil {
			usageList := v.([]any)
			if len(usageList) > 0 {
				for _, used := range usageList {
					usedUnit := used.(map[string]any)
					usedUnitList := usedUnit["usedUnitContainer"].([]any)
					if len(usedUnitList) > 0 {
						for _, data := range usedUnitList {
							udata := data.(map[string]any)
							if dup, dupOk := udata["dataVolumeUplink"]; dupOk {
								dataVolumeUplink = append(dataVolumeUplink, fmt.Sprint(parse.Number(dup)))
							}
							if ddown, ddownOk := udata["dataVolumeDownlink"]; ddownOk {
								dataVolumeDownlink = append(dataVolumeDownlink, fmt.Sprint(parse.Number(ddown)))
							}
							if dt, dtOk := udata["dataTotalVolume"]; dtOk {
								dataTotalVolume = append(dataTotalVolume, fmt.Sprint(parse.Number(dt)))
							}
						}
					}
				}
			}
		}
		// 时长
		duration := "-"
		if v, ok := cdrJSON["duration"]; ok && v != nil {
			duration = fmt.Sprint(parse.Number(v))
		}
		// 调用时间
		invocationTimestamp := ""
		if v, ok := cdrJSON["invocationTimestamp"]; ok && v != nil {
			invocationTimestamp = v.(string)
		}
		// 记录打开时间
		User_Identifier := ""
		SSC_Mode := ""
		RAT_Type := ""
		DNN_ID := ""
		PDU_Type := ""
		PDU_IPv4 := ""
		PDU_IPv6 := ""
		if v, ok := cdrJSON["pDUSessionChargingInformation"]; ok && v != nil {
			pduInfo := v.(map[string]any)

			if v, ok := pduInfo["userIdentifier"]; ok && v != nil {
				User_Identifier = v.(string)
			}
			if v, ok := pduInfo["sSCMode"]; ok && v != nil {
				SSC_Mode = v.(string)
			}
			if v, ok := pduInfo["rATType"]; ok && v != nil {
				RAT_Type = v.(string)
			}
			if v, ok := pduInfo["dNNID"]; ok && v != nil {
				DNN_ID = v.(string)
			}
			if v, ok := pduInfo["pDUType"]; ok && v != nil {
				PDU_Type = v.(string)
			}
			if v, ok := pduInfo["pDUAddress"]; ok && v != nil {
				pDUAddress := v.(map[string]any)
				if addr, ok := pDUAddress["pDUIPv4Address"]; ok && addr != nil {
					PDU_IPv4 = addr.(string)
				}
				if addr, ok := pDUAddress["pDUIPv6AddresswithPrefix"]; ok && addr != nil {
					PDU_IPv6 = addr.(string)
				}
			}

			// 			pduSessionChargingInformation = fmt.Sprintf(`User Identifier: %s
			// SSC Mode: %s    RAT Type: %s    DNN ID: %s
			// PDU Type: %s
			// PDU IPv4 Address: %s
			// PDU IPv6 Addres Swith Prefix: %s`, User_Identifier, SSC_Mode, RAT_Type, DNN_ID, PDU_Type, PDU_IPv4, PDU_IPv6)
		}

		// 记录网络参数ID
		recordNFID := ""
		if v, ok := cdrJSON["recordingNetworkFunctionID"]; ok && v != nil {
			recordNFID = v.(string)
		}

		//记录开始时间
		recordOpeningTime := ""
		if v, ok := cdrJSON["recordOpeningTime"]; ok && v != nil {
			recordOpeningTime = v.(string)
		}

		//记录类型
		recordType := ""
		if v, ok := cdrJSON["recordType"]; ok && v != nil {
			recordType = v.(string)
		}
		// for multi-tenant, get tenant name
		tenantName := row.TenantName

		dataCells = append(dataCells, map[string]any{
			"A" + idx: row.ID,
			"B" + idx: chargingID,
			"C" + idx: row.NeName,
			"D" + idx: row.RmUID,
			"E" + idx: subscriptionIDData,
			"F" + idx: subscriptionIDType,
			"G" + idx: strings.Join(dataVolumeUplink, ","),
			"H" + idx: strings.Join(dataVolumeDownlink, ","),
			"I" + idx: strings.Join(dataTotalVolume, ","),
			"J" + idx: duration,
			"K" + idx: invocationTimestamp,
			"L" + idx: User_Identifier,
			"M" + idx: SSC_Mode,
			"N" + idx: DNN_ID,
			"O" + idx: PDU_Type,
			"P" + idx: RAT_Type,
			"Q" + idx: PDU_IPv4,
			"R" + idx: networkFunctionIPv4Address,
			"S" + idx: PDU_IPv6,
			"T" + idx: recordNFID,
			"U" + idx: recordType,
			"V" + idx: recordOpeningTime,
			"W" + idx: tenantName,
		})
	}

	// 导出数据表格
	saveFilePath, err := file.WriteSheet(headerCells, dataCells, fileName, "")
	if err != nil {
		c.JSON(200, result.ErrMsg(err.Error()))
		return
	}

	c.FileAttachment(saveFilePath, fileName)
}

// 在线订阅用户数量
//
// GET /sub/num
func (s *SMFController) SubUserNum(c *gin.Context) {
	language := ctx.AcceptLanguage(c)
	var query struct {
		NeId string `form:"neId" binding:"required"`
	}
	if err := c.ShouldBindQuery(&query); err != nil {
		c.JSON(400, result.CodeMsg(400, i18n.TKey(language, "app.common.err400")))
		return
	}

	// 查询网元信息
	neInfo := s.neInfoService.SelectNeInfoByNeTypeAndNeID("SMF", query.NeId)
	if neInfo.NeId != query.NeId || neInfo.IP == "" {
		c.JSON(200, result.ErrMsg(i18n.TKey(language, "app.common.noNEInfo")))
		return
	}

	// 网元直连
	num, err := neFetchlink.SMFSubNum(neInfo)
	if err != nil {
		c.JSON(200, result.ErrMsg(err.Error()))
		return
	}

	c.JSON(200, result.OkData(num))
}

// 在线订阅用户列表信息
//
// GET /sub/list
func (s *SMFController) SubUserList(c *gin.Context) {
	language := ctx.AcceptLanguage(c)
	var query struct {
		NeId    string `form:"neId" binding:"required"`
		IMSI    string `form:"imsi"`
		MSISDN  string `form:"msisdn"`
		Upstate string `form:"upstate"`
		PageNum string `form:"pageNum"`
	}
	if err := c.ShouldBindQuery(&query); err != nil {
		c.JSON(400, result.CodeMsg(400, i18n.TKey(language, "app.common.err400")))
		return
	}

	// 查询网元信息
	neInfo := s.neInfoService.SelectNeInfoByNeTypeAndNeID("SMF", query.NeId)
	if neInfo.NeId != query.NeId || neInfo.IP == "" {
		c.JSON(200, result.ErrMsg(i18n.TKey(language, "app.common.noNEInfo")))
		return
	}

	// 网元直连
	data, err := neFetchlink.SMFSubInfoList(neInfo, map[string]string{
		"imsi":    query.IMSI,
		"msisdn":  query.MSISDN,
		"upstate": query.Upstate,
		"pageNum": query.PageNum,
	})
	if err != nil {
		c.JSON(200, result.ErrMsg(err.Error()))
		return
	}

	// 对数据进行处理，去掉前缀，并加入imsi拓展信息
	rows := data["rows"].([]any)
	if len(rows) > 0 {
		arr := &rows
		for i := range *arr {
			item := (*arr)[i].(map[string]any)
			if v, ok := item["imsi"]; ok && v != nil {
				imsiStr := v.(string)
				imsiStr = strings.TrimPrefix(imsiStr, "imsi-")
				item["imsi"] = imsiStr
				// 查UDM拓展信息
				info := s.udmUserInfoService.SelectByIMSIAndNeID(imsiStr, "")
				item["remark"] = info.Remark
			}
			if v, ok := item["msisdn"]; ok && v != nil {
				item["msisdn"] = strings.TrimPrefix(v.(string), "msisdn-")
			}
		}
	}

	c.JSON(200, result.Ok(data))
}