syntax = "proto3";

message CacheStorage {
    optional string pub_http = 1;
    bool pub_cyfs = 2;
}

message BackupStorage {
    uint32 reserved = 1;
}

message ImmutableDataSource {
    repeated bytes chunks = 1;
}

message ContractDesc {
    enum DataSourceType {
        Immutable = 0;
        Mutable = 1;
    }
    DataSourceType data_source_type = 1;
    oneof data_source {
        ImmutableDataSource immut_data_source = 2;
        uint64 mut_data_source = 3;
    }

    enum StorageType {
        Cache = 0;
        Backup = 1;
    }
    StorageType storage_type = 4;
    oneof storage {
        CacheStorage cache_storage = 5;
        BackupStorage backup_storage = 6;
    }

    bytes miner = 7;
    uint64 start_at = 8;
    uint64 end_at = 9;
    bytes witness = 10;
    optional bytes witness_dec_id = 11;
    optional bytes body_hash = 12;
}

message DsgChunkList {
    repeated bytes chunks = 1;
}

message DsgContractBody {
    optional DsgChunkList extra_chunks = 1;
}

message ReserveState {
    repeated bytes chunks = 1;
}

message DataSourceChangedState {
    repeated bytes chunks = 1;
    optional bytes data_source_stub = 2;
    enum StorageType {
        Cache = 0;
        Backup = 1;
    }
    optional StorageType storage_type = 4;
    oneof storage {
        CacheStorage cache_storage = 5;
        BackupStorage backup_storage = 6;
    }
    optional bytes witness = 7;
    optional bytes prev_change = 8;
    optional bytes stored_hash = 9;
}

message ContractState {
    enum ContractStateType {
        Initial = 0;
        Reserve = 1;
        DataSourceChanged = 2;
        DataSourceSyncing = 3;
        DataSourceStored = 4;
        ContractExecuted = 5;
        ContractBroken = 6;
    }
    ContractStateType state_type = 1;
    oneof state {
        ReserveState reserve = 2;
        DataSourceChangedState data_source_changed = 3;
    }
}

message ContractStateDesc {
    bytes contract = 1;
    ContractState state = 2;
    optional bytes body_hash = 3;
}


message ChunkMergeStub {
    optional uint32 first_range = 1;

    repeated uint32 index_range = 2;

    optional uint32 last_range = 3;
}


message ChunkFunctionMerge {
    optional bytes key = 1;
    ChunkMergeStub chunks = 2;
    uint32 split = 3;
}


message DataSourceStubDesc {
    repeated ChunkFunctionMerge functions = 1;
}

message DsgContractStateBody {
    optional DsgChunkList extra_chunks = 1;
}