// Copyright 2023 Greptime Team
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

syntax = "proto3";

option go_package = "github.com/GreptimeTeam/greptime-proto/go/substrait_extension";

package substrait_extension;

message EmptyMetric {
  // Start timestamp in millisecond
  int64 start = 1;
  // End timestamp in millisecond
  int64 end = 2;
  // Interval in millisecond
  int64 interval = 3;
}

message InstantManipulate {
  // Start timestamp in millisecond
  int64 start = 1;
  // End timestamp in millisecond
  int64 end = 2;
  // Interval in millisecond
  int64 interval = 3;
  // Look-back delta in millisecond
  int64 lookback_delta = 4;
  // Column name of time index column
  string time_index = 5;
  // Optional field column name for validating staleness
  string field_index = 6;
}

message SeriesNormalize {
  // Offset in millisecond
  int64 offset = 1;
  // Column name of time index column
  string time_index = 2;
  // Whether to filter out NaN value
  bool filter_nan = 3;
}

message SeriesDivide {
  // Names of tag columns
  repeated string tag_columns = 1;
}

message RangeManipulate {
  // Start timestamp in millisecond
  int64 start = 1;
  // End timestamp in millisecond
  int64 end = 2;
  // Interval in millisecond
  int64 interval = 3;
  // Range in millisecond
  int64 range = 4;
  // Column name of time index column
  string time_index = 5;
  // Names of tag columns
  repeated string tag_columns = 6;
}

message ScalarCalculate {
  // Start timestamp in millisecond
  int64 start = 1;
  // End timestamp in millisecond
  int64 end = 2;
  // Interval in millisecond
  int64 interval = 3;
  // Column name of time index column
  string time_index = 5;
  // Names of tag columns
  repeated string tag_columns = 6;
  // Column name of field column
  string field_column = 7;
}