syntax = "proto3";

package safeline_fvm;

option go_package = "proto/fvm;safeline_fvm";

service FVM {
    rpc AppendFSL(stream Text) returns (Status);
    rpc GetVersion(Empty) returns (VersionInfo);
    rpc GetBytecode(Version) returns (stream Chunk);
    rpc GetFSL(Version) returns (stream Chunk);
    rpc GetTableSVG(Empty) returns (stream Chunk);
    rpc CompileFSL(FslText) returns (Status);
    rpc GetPartFSL(FslInfo) returns (FslText);
    rpc GetPartDot(FslInfo) returns (stream Chunk);
    rpc UpdateState(StateText) returns (StateText);
}

message StateText {
    string Text = 1;
}

message FslInfo {
    string TaName = 1;
    string Id = 2;
}

message FslText {
    string Text = 1;
}

message Text {
    bool Incremental = 1;
    string Text = 3;
}

message Status {
    bool Ok = 1;
    string Err = 2;
    int64 Version = 3;
}

message Empty {
    
}

message VersionInfo {
    int64 Latest = 1;
    int64 Oldest = 2;
}

message Version {
    int64 From = 1;
}

message Chunk {
    bool Ok = 1;
    string Err = 2;
    int64 Version = 3;
    bytes Payload = 4;
    int64 NumChunks = 5;
    int64 ChunkIndex = 6;
}