syntax = "proto3";

import "proto/loom.proto";

message PlasmaBlock {
    BigUInt uid = 1; // Plasma block height/number
    repeated PlasmaTx transactions = 2; // Transactions included in the block
    bytes signature = 3; // TODO: remove?
    bytes merkle_hash = 4; // Block's merkle root from its included transactions
    bytes hash = 5; // TODO: remove?
    bytes proof = 6; // TODO: remove?
}

message PlasmaTx {
    uint64 slot = 1 [jstype = JS_STRING]; // The slot of the UTXO - Currently uint64, subject to change.
    BigUInt previous_block = 2; // BigUInt //Each time a transaction is created, it MUST refer to a previous block which also included that transaction. A transaction is considered a “deposit transaction”, if it’s the first UTXO after a user deposits their coin in the Plasma Chain. This transaction mints coins from nowhere in the Plasma Chain and as a result its previous block is 0.
    BigUInt denomination = 3; // BigUInt // How many coins are included in that UTXO. Currently this is always 1 since we’re using ERC721 tokens which are unique, however in future iterations this can be any number.
    Address new_owner = 4; //  The new owner of the transaction.
    bytes signature = 5; // Signature on the transaction's hash
    bytes hash = 6;   // The hash of the RLP encoded unsigned transaction’s bytes. If the transaction is a deposit transaction (its prevblock is 0), its hash is the hash of its uid
    bytes merkle_hash = 7; // The hash of the RLP encoded signed transaction’s bytes
    Address sender = 8; // TODO: seems redundant, remove?
    bytes proof = 9; // Proof after its inserted into the block
}

message GetCurrentBlockRequest {
}

message GetCurrentBlockResponse {
    BigUInt block_height = 1;
}

message GetBlockRequest {
    BigUInt block_height = 1;
}

message GetBlockResponse {
    PlasmaBlock block = 1;
}

// This only originates from the validator
message SubmitBlockToMainnetRequest {
}

message SubmitBlockToMainnetResponse {
    bytes merkle_hash = 1; // Merkle root of Plasma block to be submitted to mainnet
}

message PlasmaTxRequest {
    PlasmaTx plasmatx = 1;
}

message PlasmaTxResponse {
}

message GetPlasmaTxRequest {
    uint64 slot = 1 [jstype = JS_STRING]; // The slot of the UTXO - Currently uint64, subject to change.
    BigUInt block_height = 2;
}

message GetPlasmaTxResponse {
    PlasmaTx plasma_tx= 1;
}

message GetUserSlotsRequest {
    Address from = 1;
}

message GetUserSlotsResponse {
    repeated uint64 slots = 1 [jstype = JS_STRING];
}

message DepositRequest {
    uint64 slot = 1 [jstype = JS_STRING]; // The slot of the UTXO - Currently uint64, subject to change.
    BigUInt deposit_block = 2;
    // For ERC20 this is the number of coins deposited, for ERC721 this is a token ID.
    BigUInt denomination = 3;
    // Entity that made the deposit
    Address from = 4;
    // Contract from which the coins originated (i.e. the currency of the coins)
    Address contract = 5;
}