package analysisadminlogic

import (
	"context"
	"strconv"

	"lone-services/pkg/modelbase"
	"lone-services/pkg/utils"
	"lone-services/pkg/validate"
	analysis "lone-services/rpc/analysis/pb"
	userpb "lone-services/rpc/user/pb"
	"lone-services/services/analysis/internal/dao"
	"lone-services/services/analysis/internal/logic/common"
	"lone-services/services/analysis/internal/model"
	"lone-services/services/analysis/internal/svc"
	"lone-services/services/analysis/validator"

	"github.com/zeromicro/go-zero/core/logx"
	"google.golang.org/grpc/codes"
	"google.golang.org/grpc/status"
)

type ScanListLogic struct {
	ctx    context.Context
	svcCtx *svc.ServiceContext
	logx.Logger
}

func NewScanListLogic(ctx context.Context, svcCtx *svc.ServiceContext) *ScanListLogic {
	return &ScanListLogic{
		ctx:    ctx,
		svcCtx: svcCtx,
		Logger: logx.WithContext(ctx),
	}
}

func (l *ScanListLogic) ScanList(in *analysis.AdminScanListReq) (*analysis.Response, error) {
	var req validator.AdminScanListValidator
	if msg := validate.ValidateFromProto(in, &req); msg != utils.StringEmpty {
		return outParams(msg), nil
	}
	if _, fail := common.RequireAdmin(l.ctx); fail != nil {
		return fail, nil
	}

	params := modelbase.Params{
		Eq: map[string]string{
			"status": strconv.Itoa(utils.StatusOk),
		},
		Order: "id desc",
		Page:  int(req.Page),
		Size:  int(req.Size),
	}
	if req.State > utils.NumberZero {
		params.Eq["state"] = strconv.Itoa(int(req.State))
	}

	if req.Keyword != utils.StringEmpty {
		bizIds, err := l.filterBizIds(req.Keyword)
		if err != nil {
			l.Errorf("admin scan list filter: %v", err)
			return common.FailResponse(utils.Fail), nil
		}
		if len(bizIds) == utils.NumberZero {
			return common.OkResponse(modelbase.PageResult{Items: []dao.AdminScanListItem{}}), nil
		}
		params.In = map[string][]string{"user_id": idStrings(bizIds)}
	}

	var logs []dao.UserImageLog
	page, err := model.UserImageLogModel{}.Init().Page(params, &logs)
	if err != nil {
		l.Errorf("admin scan list page: %v", err)
		return common.FailResponse(utils.Fail), nil
	}
	if len(logs) == utils.NumberZero {
		page.Items = []dao.AdminScanListItem{}
		return common.OkResponse(page), nil
	}

	userIds := make([]int64, 0, len(logs))
	seen := make(map[int64]struct{}, len(logs))
	for _, row := range logs {
		if row.UserId < utils.NumberOne {
			continue
		}
		if _, ok := seen[row.UserId]; ok {
			continue
		}
		seen[row.UserId] = struct{}{}
		userIds = append(userIds, row.UserId)
	}

	profiles, err := l.loadProfiles(userIds)
	if err != nil {
		l.Errorf("admin scan list profiles: %v", err)
		return common.FailResponse(utils.Fail), nil
	}
	users, err := loadAnalysisUsers(userIds)
	if err != nil {
		l.Errorf("admin scan list users: %v", err)
		return common.FailResponse(utils.Fail), nil
	}

	items := make([]dao.AdminScanListItem, 0, len(logs))
	for _, row := range logs {
		item := dao.AdminScanListItem{
			Id:              row.Id,
			UserId:          row.UserId,
			DetectionNumber: row.DetectionNumber,
			DetectionTime:   row.DetectionTime.String(),
			State:           int(row.State),
			GenderText:      formatGender(utils.NumberZero),
		}
		if user, ok := users[row.UserId]; ok {
			item.CreatedAt = user.CreatedAt.String()
		}
		if profile, ok := profiles[row.UserId]; ok {
			name := profile.GetName()
			item.Username = name
			item.Nickname = name
			mobile, _ := utils.DecryptPhone(profile.GetMobile())
			item.Mobile = mobile
			item.Gender = int(profile.GetGender())
			item.GenderText = formatGender(profile.GetGender())
			item.BirthdayText = utils.CalcAgeStr(profile.GetBirthday())
		}
		items = append(items, item)
	}

	page.Items = items
	return common.OkResponse(page), nil
}

func (l *ScanListLogic) filterBizIds(keyword string) ([]int64, error) {
	if l.svcCtx.UserSvcName == utils.StringEmpty {
		return nil, status.Error(codes.FailedPrecondition, "user service empty")
	}
	cli, err := svc.GetRpcClient(l.svcCtx.UserSvcName)
	if err != nil {
		return nil, err
	}
	res, err := userpb.NewUserClient(cli.Conn()).InternalUsersByBiz(l.ctx, &userpb.InternalUsersByBizReq{
		ClientCode: dao.ClientCodeUserSkin,
		Keyword:    keyword,
	})
	if err != nil {
		return nil, err
	}
	ids := make([]int64, 0, len(res.GetItems()))
	for _, item := range res.GetItems() {
		if item.GetBizId() > utils.NumberZero {
			ids = append(ids, item.GetBizId())
		}
	}
	return ids, nil
}

func (l *ScanListLogic) loadProfiles(bizIds []int64) (map[int64]*userpb.BizUserItem, error) {
	out := make(map[int64]*userpb.BizUserItem, len(bizIds))
	if len(bizIds) == utils.NumberZero {
		return out, nil
	}
	if l.svcCtx.UserSvcName == utils.StringEmpty {
		return nil, status.Error(codes.FailedPrecondition, "user service empty")
	}
	cli, err := svc.GetRpcClient(l.svcCtx.UserSvcName)
	if err != nil {
		return nil, err
	}
	res, err := userpb.NewUserClient(cli.Conn()).InternalUsersByBiz(l.ctx, &userpb.InternalUsersByBizReq{
		ClientCode: dao.ClientCodeUserSkin,
		BizIds:     bizIds,
	})
	if err != nil {
		return nil, err
	}
	for _, item := range res.GetItems() {
		out[item.GetBizId()] = item
	}
	return out, nil
}

func loadAnalysisUsers(ids []int64) (map[int64]dao.User, error) {
	out := make(map[int64]dao.User, len(ids))
	if len(ids) == utils.NumberZero {
		return out, nil
	}
	var rows []dao.User
	err := model.UserModel{}.Init().Items(modelbase.Params{
		In: map[string][]string{"id": idStrings(ids)},
	}, &rows)
	if err != nil {
		return nil, err
	}
	for _, row := range rows {
		out[row.Id] = row
	}
	return out, nil
}