syntax = "proto3";

package engula.v1;

message CollectionDesc {
  uint64 id = 1;
  string name = 2;
  uint64 parent_id = 3;
}

message CollectionRequest {
  string dbname = 1;
  repeated CollectionRequestUnion requests = 2;
}

message CollectionResponse { repeated CollectionResponseUnion responses = 1; }

message CollectionRequestUnion {
  oneof request {
    ListCollectionsRequest list_collections = 1;
    CreateCollectionRequest create_collection = 2;
    UpdateCollectionRequest update_collection = 3;
    DeleteCollectionRequest delete_collection = 4;
    DescribeCollectionRequest describe_collection = 5;
  }
}

message CollectionResponseUnion {
  oneof response {
    ListCollectionsResponse list_collections = 1;
    CreateCollectionResponse create_collection = 2;
    UpdateCollectionResponse update_collection = 3;
    DeleteCollectionResponse delete_collection = 4;
    DescribeCollectionResponse describe_collection = 5;
  }
}

message ListCollectionsRequest {}

message ListCollectionsResponse { repeated CollectionDesc descs = 1; }

message CreateCollectionRequest { CollectionDesc desc = 1; }

message CreateCollectionResponse { CollectionDesc desc = 1; }

message UpdateCollectionRequest { CollectionDesc desc = 1; }

message UpdateCollectionResponse { CollectionDesc desc = 1; }

message DeleteCollectionRequest { string name = 1; }

message DeleteCollectionResponse {}

message DescribeCollectionRequest { string name = 1; }

message DescribeCollectionResponse { CollectionDesc desc = 1; }