package service

import (
	"context"
	"gim/pkg/gerrors"
	"gim/pkg/grpclib"
	"gim/pkg/logger"
	"gim/pkg/mq"
	"gim/pkg/pb"
	"gim/pkg/util"
	"time"

	"go.uber.org/zap"
	"google.golang.org/protobuf/proto"
)

type pushService struct{}

var PushService = new(pushService)

// PushToUser 向用户推送消息
func (s *pushService) PushToUser(ctx context.Context, userId int64, code pb.PushCode, message proto.Message, isPersist bool) error {
	logger.Logger.Debug("push_to_user",
		zap.Int64("request_id", grpclib.GetCtxRequestId(ctx)),
		zap.Int64("user_id", userId),
		zap.Int32("code", int32(code)),
		zap.Any("message", message))

	messageBuf, err := proto.Marshal(message)
	if err != nil {
		return gerrors.WrapError(err)
	}

	commandBuf, err := proto.Marshal(&pb.Command{Code: int32(code), Data: messageBuf})
	if err != nil {
		return gerrors.WrapError(err)
	}

	_, err = MessageService.SendToUser(ctx,
		&pb.Sender{
			SenderType: pb.SenderType_ST_SYSTEM,
			SenderId:   0,
		},
		userId,
		&pb.SendMessageReq{
			ReceiverType:   pb.ReceiverType_RT_USER,
			ReceiverId:     userId,
			ToUserIds:      nil,
			MessageType:    pb.MessageType_MT_COMMAND,
			MessageContent: commandBuf,
			SendTime:       util.UnixMilliTime(time.Now()),
			IsPersist:      isPersist,
		},
	)
	if err != nil {
		return err
	}
	return nil
}

// PushAll 全服推送
func (s *pushService) PushAll(ctx context.Context, req *pb.PushAllReq) error {
	msg := pb.PushAllMsg{
		MessageSend: &pb.MessageSend{
			Message: &pb.Message{
				Sender:         &pb.Sender{SenderType: pb.SenderType_ST_BUSINESS},
				ReceiverType:   pb.ReceiverType_RT_ROOM,
				ToUserIds:      nil,
				MessageType:    req.MessageType,
				MessageContent: req.MessageContent,
				Seq:            0,
				SendTime:       util.UnixMilliTime(time.Now()),
				Status:         0,
			},
		},
	}
	bytes, err := proto.Marshal(&msg)
	if err != nil {
		return gerrors.WrapError(err)
	}
	err = mq.Publish(mq.PushAllTopic, bytes)
	if err != nil {
		return err
	}
	return nil
}