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) ApplyCheck(session comm.IUserSession, req *pb.FriendApplyReq) (code pb.ErrorCode) {
	if req.FriendId == "" {
		code = pb.ErrorCode_ReqParameterError
	}
	return
}

//好友申请
func (this *apiComp) Apply(session comm.IUserSession, req *pb.FriendApplyReq) (code pb.ErrorCode, data proto.Message) {
	if code = this.ApplyCheck(session, req); code != pb.ErrorCode_Success {
		return
	}
	
	globalCnf := this.moduleFriend.configure.GetGlobalConf()
	if globalCnf == nil {
		code = pb.ErrorCode_ConfigNoFound
		return
	}

	var (
		err    error
		self   *pb.DBFriend
		target *pb.DBFriend
		Resp   *pb.FriendApplyResp
	)

	defer func() {
		if code == pb.ErrorCode_Success {
			Resp = &pb.FriendApplyResp{
				UserId:   session.GetUserId(),
				FriendId: req.FriendId,
			}
		}
		if err := session.SendMsg(string(this.moduleFriend.GetType()), FriendSubTypeApply, Resp); err != nil {
			code = pb.ErrorCode_SystemError
			return
		}
	}()

	//获取玩家自己好友数据
	self = this.moduleFriend.modelFriend.GetFriend(session.GetUserId())
	if self == nil {
		code = pb.ErrorCode_FriendSelfNoData
		return
	}

	//获取好友数据
	target = this.moduleFriend.modelFriend.GetFriend(req.FriendId)
	if target == nil {
		code = pb.ErrorCode_FriendTargetNoData
		return
	}

	//判断是否是自己
	if req.FriendId == session.GetUserId() {
		code = pb.ErrorCode_FriendNotSelf
		return
	}

	//判断是否超过最大好友数量
	if len(self.FriendIds) >= int(globalCnf.FriendMaxnum) {
		code = pb.ErrorCode_FriendSelfMax
		return
	}

	//判断对方是否也超过最大好友数量
	if len(target.FriendIds) >= int(globalCnf.FriendMaxnum) {
		code = pb.ErrorCode_FriendTargetMax
		return
	}

	//判断是否是好友
	if _, ok := utils.Find(self.FriendIds, req.FriendId); ok {
		code = pb.ErrorCode_FriendYet
		return
	}

	//判断自己是否在目标用户的申请列表中
	if _, ok := utils.Find(target.ApplyIds, self.Uid); ok {
		code = pb.ErrorCode_FriendApplyYet
		return
	}

	//判断目标用户是否在黑名单中
	if _, ok := utils.Find(self.BlackIds, req.FriendId); ok {
		code = pb.ErrorCode_FriendSelfBlackYet
		return
	}

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

	//将自己加入到目标用户的申请列表中
	if target.ApplyIds == nil {
		target.ApplyIds = []string{}
	}
	target.ApplyIds = append(target.ApplyIds, session.GetUserId())

	err = this.moduleFriend.modelFriend.Change(req.FriendId, map[string]interface{}{
		"applyIds": target.ApplyIds,
	})
	if err != nil {
		log.Errorf("firend Apply err:%v", err)
		code = pb.ErrorCode_FriendApplyError
		return
	}

	return
}