package friend

import (
	"context"
	"go_dreamfactory/comm"
	"go_dreamfactory/pb"
	"go_dreamfactory/sys/cache"
	"go_dreamfactory/utils"
)

//加入黑名单
func (this *ApiComp) Addblack(ctx context.Context, session comm.IUserSession, req *pb.FriendBlackAddReq) (err error) {
	var (
		code        pb.ErrorCode
		self        *pb.Cache_FriendData
		target      *pb.Cache_FriendData
		rsp         *pb.FriendBlackAddRsp
		blackNumMax = 50 //TODO 从配置中读取
	)

	defer func() {
		if code == pb.ErrorCode_Success {
			rsp = &pb.FriendBlackAddRsp{
				FriendId: req.FriendId,
				UserId:   session.GetUserId(),
			}
		}
		session.SendMsg(string(this.module.GetType()), Friend_SubType_AddBlack, code, rsp)
	}()

	self, err = cache.Defsys.Friend_Get(session.GetUserId())
	if self == nil || err != nil {
		code = pb.ErrorCode_FriendSelfNoData
		return
	}

	target, err = cache.Defsys.Friend_Get(req.FriendId)
	if target == nil || err != nil {
		code = pb.ErrorCode_FriendTargetNoData
		return
	}

	//判断目标是否在好友列表里面
	if _, ok := utils.Find(self.FriendIds, req.FriendId); ok {
		code = pb.ErrorCode_FriendSelfBlackYet
		return
	}

	// 判断自己是否在对方的黑名单中
	if _, ok := utils.Find(target.BlackIds, self.UserId); ok {
		code = pb.ErrorCode_FriendTargetBlackYet
		return
	}

	// 判断是否黑名单人数已满
	if len(self.BlackIds) >= blackNumMax {
		code = pb.ErrorCode_FriendBlackMax
		return
	}

	//将目标加入黑名单
	self.BlackIds = append(self.BlackIds, req.FriendId)
	//更新黑名单
	err = cache.Defsys.Friend_Update(self)
	if err != nil {
		code = pb.ErrorCode_DBError
		return
	}
	return nil
}