syntax = "proto3";
package sarus_data_spec;

message Statistics {
  string name = 1;
  oneof statistics {
    Null null = 3;
    Unit unit = 4;
    Boolean boolean = 5;
    Integer integer = 6;
    Enum enum = 7;
    Float float = 8;
    Text text = 9;
    Bytes bytes = 10;
    Struct struct = 11;
    Union union = 12;
    Optional optional = 13;
    List list = 14;
    Array array = 15;
    Datetime datetime = 16;
    Id id = 17;
    Constrained constrained = 18;
    Date date = 19;
    Time time = 20;
    Duration duration = 21;

  }
  map<string, string> properties = 2; // Other properties

  message Null {
    int64 size = 1;
    double multiplicity = 2;}

  message Unit {
    int64 size = 1;
    double multiplicity = 2;
  }

  message Boolean {
    Distribution distribution = 1;
    int64 size = 2;
    double multiplicity = 3;
  }

  message Id {
    int64 size = 1;
    double multiplicity = 2;
  }

  message Integer {
    Distribution distribution = 1;
    int64 size = 2;
    double multiplicity = 3;
  }

  message Enum {
    Distribution distribution = 1;
    int64 size = 2;
    double multiplicity = 3;
  }

  message Float {
    Distribution distribution = 1;
    int64 size = 2;
    double multiplicity = 3;
  }

  message Text {
    Distribution distribution = 1;
    string example = 2;
    int64 size = 3;
    double multiplicity = 4;

  }

  message Bytes {
    int64 size = 1;
    double multiplicity = 2;
  }

  message Struct {
    // A static struct with named fields
    repeated Field fields = 1;
    int64 size = 2;
    string name = 3;
    double multiplicity = 4;
    // A single field
    message Field {
      string name = 1;
      Statistics statistics = 2;
    }
  }

  message Union {
    repeated Field fields = 1;
    int64 size = 2;
    string name = 3;
    double multiplicity = 4;
    // A single field
    message Field {
      string name = 1;
      Statistics statistics = 2;
    }
  }

  message Optional {
    Statistics statistics = 1;
    int64 size = 2;
    string name = 3;
    double multiplicity = 4;

  }

  message List {
    Statistics statistics = 1;
    Distribution distribution = 2;
    int64 size = 3;
    double multiplicity = 4;

  }

  message Array {
    // A numpy-like n-dimensional array
    Statistics statistics = 1;
    repeated Distribution distributions = 2;
    int64 size = 3;
    double multiplicity = 4;

  }

  message Datetime {
    // for a datetime type
    Distribution distribution = 1;
    int64 size = 2;
    double multiplicity = 3;
  }

  message Date {
    // for a date type
    Distribution distribution = 1;
    int64 size = 2;
    double multiplicity = 3;
  }

  message Time {
    // for a time type
    Distribution distribution = 1;
    int64 size = 2;
    double multiplicity = 3;
  }

  message Duration {
    // for a duration type
    Distribution distribution = 1;
    int64 size = 2;
    double multiplicity = 3;
  }

  message Constrained{
    Statistics statistics = 1;
    int64 size = 2;
    double multiplicity = 3;

  }
}


message Distribution {
  oneof distribution {
    Double double = 1;
    Integer integer = 2;
    Boolean boolean = 3;
    Enum enum = 4;
  }
  map<string, string> properties = 5; // Needed for compatibility with typing
  message Double{
    repeated Point points = 1;
    double min = 2;
    double max = 3;
    message Point {
      double value = 2;
      double probability = 3;
    }
  }
  message Integer{
    repeated Point points = 1;
    int64 min = 2;
    int64 max = 3;
    message Point {
      int64 value = 1;
      double probability = 2;
    }}

  message Boolean{
    repeated Point points = 1;
    message Point {
      bool name = 1;
      int64 value = 2;
      double probability = 3;
    }}
  message Enum{
    repeated Point points = 1;
    message Point {
      string name = 1;
      double value = 2;
      double probability = 3;
    }
  }
}