syntax = "proto3";

package nomos.da.dispersal.v1;

message Blob {
    bytes blob_id = 1;
    bytes data = 2;
}

// DISPERSAL

message DispersalErr {
    bytes blob_id = 1;

    enum DispersalErrType {
        CHUNK_SIZE = 0;
        VERIFICATION = 1;
    }

    DispersalErrType err_type = 2;
    string err_description = 3;
}

message DispersalReq {
    Blob blob = 1;
}

message DispersalRes {
    oneof message_type {
        bytes blob_id = 1;
        DispersalErr err = 2;
    }
}

// SAMPLING

message SampleErr {
    bytes blob_id = 1;

    enum SampleErrType {
        NOT_FOUND = 0;
    }

    SampleErrType err_type = 2;
    string err_description = 3;
}

message SampleReq {
    bytes blob_id = 1;
}

message SampleRes {
    oneof message_type {
        Blob blob = 1;
        SampleErr err = 2;
    }
}

// SESSION CONTROL

message CloseMsg {
    enum CloseReason {
        GRACEFUL_SHUTDOWN = 0;
        SUBNET_CHANGE = 1;
        SUBNET_SAMPLE_FAIL = 2;
    }

    CloseReason reason = 1;
}

message SessionReq {
    oneof message_type {
        CloseMsg close_msg = 1;
    }
}

// WRAPPER MESSAGE

message DispersalMessage {
    oneof message_type {
        DispersalReq dispersal_req = 1;
        DispersalRes dispersal_res = 2;
        SampleReq sample_req = 3;
        SampleRes sample_res = 4;
        SessionReq session_req = 5;
    }
}