package friend

import (
	"go_dreamfactory/comm"
	"go_dreamfactory/lego/sys/log"
	"go_dreamfactory/pb"
	"go_dreamfactory/utils"

	"google.golang.org/protobuf/proto"
)

func (this *apiComp) DelCheck(session comm.IUserSession, req *pb.FriendDelReq) (code pb.ErrorCode) {
	if req.FriendId == "" {
		code = pb.ErrorCode_ReqParameterError
	}
	return
}

//删除好友
func (this *apiComp) Del(session comm.IUserSession, req *pb.FriendDelReq) (code pb.ErrorCode, data proto.Message) {
	if code = this.DelCheck(session, req); code != pb.ErrorCode_Success {
		return
	}

	self := this.moduleFriend.modelFriend.GetFriend(session.GetUserId())
	if self == nil {
		code = pb.ErrorCode_FriendSelfNoData
		return
	}

	// 从好友列表中删除
	selfFriendIds := utils.DeleteString(self.FriendIds, req.FriendId)

	if err := this.moduleFriend.modelFriend.Change(self.Uid, map[string]interface{}{
		"friendIds": selfFriendIds,
	}); err != nil {
		log.Errorf("Del friend err:%v", err)
		code = pb.ErrorCode_FriendApplyError
		return
	}

	target := this.moduleFriend.modelFriend.GetFriend(req.FriendId)
	if target == nil {
		code = pb.ErrorCode_FriendNotSelf
		return
	}

	// 将自己从对方好友列表中移除
	targetFriendIds := utils.DeleteString(target.FriendIds, session.GetUserId())

	if err := this.moduleFriend.modelFriend.Change(req.FriendId, map[string]interface{}{
		"friendIds": targetFriendIds,
	}); err != nil {
		log.Errorf("Del friend err:%v", err)
		code = pb.ErrorCode_FriendApplyError
		return
	}

	if err := session.SendMsg(string(this.moduleFriend.GetType()), FriendSubTypeDel, &pb.FriendDelResp{FriendId: req.FriendId, UserId: self.Uid}); err != nil {
		code = pb.ErrorCode_SystemError
	}

	return
}