// 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";

package substrait_extension;

option go_package = "github.com/GreptimeTeam/greptime-proto/go/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;
  // [DEPRECATED] Column name of time index column.
  // Use `time_index_idx` instead.
  string time_index = 5 [deprecated = true];
  // [DEPRECATED] Optional field column name for validating staleness.
  // Use `field_index_idx` instead.
  string field_index = 6 [deprecated = true];
  // Column index of time index column
  uint64 time_index_idx = 7;
  // Optional field column index for validating staleness
  uint64 field_index_idx = 8;
}

message SeriesNormalize {
  // Offset in millisecond
  int64 offset = 1;
  // [DEPRECATED] Column name of time index column.
  // Use `time_index_idx` instead.
  string time_index = 2 [deprecated = true];
  // Whether to filter out NaN value
  bool filter_nan = 3;
  // [DEPRECATED] Names of tag columns.
  // Use `tag_column_indices` instead.
  repeated string tag_columns = 4 [deprecated = true];
  // Column index of time index column
  uint64 time_index_idx = 5;
  // Indices of tag columns
  repeated uint64 tag_column_indices = 6;
}

message SeriesDivide {
  // [DEPRECATED] Names of tag columns.
  // Use `tag_column_indices` instead.
  repeated string tag_columns = 1 [deprecated = true];
  // [DEPRECATED] Name of time index column.
  // Use `time_index_column_idx` instead.
  string time_index_column = 2 [deprecated = true];
  // Indices of tag columns
  repeated uint64 tag_column_indices = 3;
  // Index of time index column
  uint64 time_index_column_idx = 4;
}

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;
  // [DEPRECATED] Column name of time index column.
  // Use `time_index_idx` instead.
  string time_index = 5 [deprecated = true];
  // [DEPRECATED] Names of tag columns.
  // Use `tag_column_indices` instead.
  repeated string tag_columns = 6 [deprecated = true];
  // Column index of time index column
  uint64 time_index_idx = 7;
  // Indices of tag columns
  repeated uint64 tag_column_indices = 8;
}

message ScalarCalculate {
  // Start timestamp in millisecond
  int64 start = 1;
  // End timestamp in millisecond
  int64 end = 2;
  // Interval in millisecond
  int64 interval = 3;
  // [DEPRECATED] Column name of time index column.
  // Use `time_index_idx` instead.
  string time_index = 5 [deprecated = true];
  // [DEPRECATED] Names of tag columns.
  // Use `tag_column_indices` instead.
  repeated string tag_columns = 6 [deprecated = true];
  // [DEPRECATED] Column name of field column.
  // Use `field_column_idx` instead.
  string field_column = 7 [deprecated = true];
  // Column index of time index column
  uint64 time_index_idx = 8;
  // Indices of tag columns
  repeated uint64 tag_column_indices = 9;
  // Column index of field column
  uint64 field_column_idx = 10;
}

message Absent {
  // Start timestamp in millisecond
  int64 start = 1;
  // End timestamp in millisecond
  int64 end = 2;
  // Step in millisecond
  int64 step = 3;
  // [DEPRECATED] Column name of time index column.
  // Use `time_index_column_idx` instead.
  string time_index_column = 4 [deprecated = true];
  // [DEPRECATED] Column name of value column.
  // Use `value_column_idx` instead.
  string value_column = 5 [deprecated = true];
  // Fake labels as key-value pairs
  repeated LabelPair fake_labels = 6;
  // Column index of time index column
  uint64 time_index_column_idx = 7;
  // Column index of value column
  uint64 value_column_idx = 8;
}

message LabelPair {
  string key = 1;
  string value = 2;
}

message HistogramFold {
  // Column index of the `le` column (histogram bucket bounds)
  uint64 le_column_idx = 1;
  // Column index of the timestamp column
  uint64 ts_column_idx = 2;
  // Column index of the field column (histogram values)
  uint64 field_column_idx = 3;
  // Quantile value
  double quantile = 4;
}

message UnionDistinctOn {
  // Indices of columns to compare for equality
  repeated uint64 compare_key_indices = 1;
  // Column index of the timestamp column
  uint64 ts_col_idx = 2;
}