package member

import (
	"context"
	"strings"
	"time"

	"bsm/full/module/social/group/internal/impl"
	"bsm/full/module/social/group/internal/models"
	pb "bsm/full/module/social/group/pb"
	"git.apinb.com/bsm-sdk/core/errcode"
	"git.apinb.com/bsm-sdk/core/printer"
	"git.apinb.com/bsm-sdk/core/service"
	"git.apinb.com/bsm-sdk/core/utils"
	"git.apinb.com/bsm-sdk/core/vars"
)

// 申请加群处理
func JoinDoHandle(ctx context.Context, in *pb.GroupOPRequest) (reply *pb.DataStatusReply, err error) {
	auth, err := service.ParseMetaCtx(ctx, nil)
	if err != nil {
		return nil, err
	}

	// 未识别的操作方向直接报错，不再默认返回成功
	direction := strings.ToUpper(in.Direction)
	if direction != "PASS" && direction != "REJECT" {
		return nil, errcode.ErrInvalidArgument
	}

	// 查询申请记录
	var apply models.GroupApply
	if err = impl.DBService.Where("identity=?", in.Identity).First(&apply).Error; err != nil {
		printer.Error(err.Error())
		return nil, errcode.ErrRecordNotFound
	}

	// 幂等：申请已处理则直接返回成功
	if apply.Status != 0 {
		return &pb.DataStatusReply{Data: vars.OK, Timeseq: time.Now().UnixMilli()}, nil
	}

	// 角色校验：仅该群管理员/创建者可处理申请
	var opRole int32
	if err = impl.DBService.Model(&models.GroupMember{}).
		Where("group_identity=? and passport_id=?", apply.GroupIdentity, auth.ID).
		Pluck("role", &opRole).Error; err != nil {
		printer.Error(err.Error())
		return nil, errcode.ErrDB
	}
	if opRole <= ROLE_MEMBER {
		return nil, errcode.ErrPermissionDenied
	}

	var identity string
	switch direction {
	case "PASS":
		// 幂等：申请人已是成员则不再重复创建
		var memberCnt int64
		if err = impl.DBService.Model(&models.GroupMember{}).
			Where("group_identity=? and passport_id=?", apply.GroupIdentity, apply.FromID).Count(&memberCnt).Error; err != nil {
			printer.Error(err.Error())
			return nil, errcode.ErrDB
		}
		if memberCnt == 0 {
			member := &models.GroupMember{
				GroupID:       apply.GroupID,
				GroupIdentity: apply.GroupIdentity,
				Role:          ROLE_MEMBER,
			}
			member.Identity = utils.UUID()
			member.PassportID = apply.FromID
			member.PassportIdentity = apply.FromIdentity
			if err = impl.DBService.Create(member).Error; err != nil {
				printer.Error(err.Error())
				return nil, errcode.ErrDB
			}
			identity = member.Identity
			// 更新群组表数据统计
			models.UpsetGroupMemberTotal(apply.GroupIdentity, "+")
		}

		// 更新申请表处理结果
		if err = impl.DBService.Model(&models.GroupApply{}).Where("identity=?", in.Identity).UpdateColumn("status", 1).Error; err != nil {
			printer.Error(err.Error())
			return nil, errcode.ErrDB
		}
	case "REJECT":
		// 更新申请表处理结果
		if err = impl.DBService.Model(&models.GroupApply{}).Where("identity=?", in.Identity).UpdateColumn("status", -1).Error; err != nil {
			printer.Error(err.Error())
			return nil, errcode.ErrDB
		}
	}

	return &pb.DataStatusReply{
		Data:    identity,
		Timeseq: time.Now().UnixMilli(),
	}, nil

}