syntax = "proto3";

package live.recommend.v1;

option go_package = "v1";

import "github.com/gogo/protobuf/gogoproto/gogo.proto";

service Recommend {
    // 获取n个推荐, 得到的结果是在线的房间
    // 去重，不会重复推荐
    // 如果没有足够推荐的结果则返回空的结果，调用方需要补位
    rpc random_recs_by_user (GetRandomRecReq) returns (GetRandomRecResp);
    // 清空推荐缓存，清空推荐过的集合
    rpc clear_recommend_cache (ClearRecommendRequest) returns (ClearRecommendResponse);
}

message ClearRecommendRequest {
    // 用户uid
    int64 uid = 1 [(gogoproto.moretags) = 'validate:"gt=0"'];
}

message ClearRecommendResponse {

}

message GetRandomRecReq {
    // 用户uid
    int64 uid = 1 [(gogoproto.moretags) = 'validate:"gt=0"'];
    // 获取数量
    uint32 count = 2 [(gogoproto.moretags) = 'validate:"gt=0"'];
    // room_id去重
    repeated int64 exist_ids = 3;
}

message GetRandomRecResp {
    // 返回数量
    uint32 count = 1;
    // 房间id
    repeated int64 room_ids = 2;
}