syntax = "proto3";
package grpc;

option go_package = "internal/pkg/grpc";

service device {
    // groups basic device interactions
    // get/set name based on request
    rpc Name(NameRequest) returns (NameResponse)
}

message NameRequest {
  // empty for future expansion  
    string Name = 1;
}

message NameResponse {
   string Name = 1; 
}

service sensor {
    // sensor specific functions
    rpc Reading(ReadingRequest) returns (ReadingResponse)
    rpc SampleRate(SampleRateRequest) returns (SampleRateResponse)
}

message ReadingRequest {
    // empty
}

message ReadingResponse {
    string Reading = 1; // formatted reading "9.7 pH"
    int64 Timestamp = 2; // when the reading was taken
}

message SampleRateRequest {
    int32 SampleRate = 1; // 0 to return current sample rate, value in seconds
}

message SampleRateResponse {
    int32 SampleRate = 1; // returns the set sample rate
}