/*
	Types for TREZOR communication

	Author: Marek Palatinus <slush@satoshilabs.com>

	Version: 0.6
*/

// Some sugar for easier handling in Multibit
option java_package = "org.multibit.hd.hardware.trezor.protobuf";
option java_outer_classname = "TrezorType";

import "google/protobuf/descriptor.proto";

extend google.protobuf.EnumValueOptions {
	optional bool wire_in = 50002;	// message can be transmitted via wire from PC to TREZOR
	optional bool wire_out = 50003;	// message can be transmitted via wire from TREZOR to PC
	optional bool wire_debug_in = 50004;	// message can be transmitted via debug wire from PC to TREZOR
	optional bool wire_debug_out = 50005;	// message can be transmitted via debug wire from TREZOR to PC
}

enum FailureType {
	Failure_UnexpectedMessage = 1;
	Failure_ButtonExpected = 2;
	Failure_SyntaxError = 3;
	Failure_ActionCancelled = 4;
	Failure_PinExpected = 5;
	Failure_PinCancelled = 6;
	Failure_PinInvalid = 7;
	Failure_InvalidSignature = 8;
	Failure_Other = 9;
	Failure_NotEnoughFunds = 10;
	Failure_NotInitialized = 11;
	Failure_FirmwareError = 99;
}

// Specifies which script will be used for given transaction output.
enum ScriptType {
	PAYTOADDRESS = 0;
	PAYTOSCRIPTHASH = 1;
}

// Specifies which kind of information is required by transaction signing process
enum RequestType {
	TXINPUT = 0;
	TXOUTPUT = 1;
}

enum ButtonRequestType {
	ButtonRequest_Other = 1;
	ButtonRequest_FeeOverThreshold = 2;
	ButtonRequest_ConfirmOutput = 3;
	ButtonRequest_ResetDevice = 4;
	ButtonRequest_ConfirmWord = 5;
	ButtonRequest_WipeDevice = 6;
	ButtonRequest_ProtectCall = 7;
	ButtonRequest_SignTx = 8;
}

enum PinMatrixRequestType {
	PinMatrixRequestType_Current = 1;
	PinMatrixRequestType_NewFirst = 2;
	PinMatrixRequestType_NewSecond = 3;
}

// Structure of BIP32 (hierarchical deterministic) node
// Used for imports of private key into the device and exporting public key out of device
message HDNodeType {
	required uint32 depth = 1;
	required uint32 fingerprint = 2;
	required uint32 child_num = 3;
	required bytes chain_code = 4;
	optional bytes private_key = 5;
	optional bytes public_key = 6;
}

message CoinType {
	optional string coin_name = 1;
	optional string coin_shortcut = 2;
	optional uint32 address_type = 3;
	optional uint64 maxfee_kb = 4;
}

message TxInputType {
	repeated uint32 address_n = 1;			// Parameter for address generation algorithm to derive the address from the master node
	required bytes prev_hash = 2;		// Hash of previous transaction output to spend by this input
	required uint32 prev_index = 3;			// Index of previous output to spend
	optional bytes script_sig = 4;	// Script signature
	optional uint32 sequence = 5 [default=0xffffffff];
}

message TxOutputType {
	optional string address = 1;				// Target bitcoin address in base58 encoding
	repeated uint32 address_n = 2;			// Has higher priority than "address".
	required uint64 amount = 3;				// Amount to send in satoshis
	required ScriptType script_type = 4;	// Select output script type
	repeated bytes script_args = 5;	// Provide additional parameters for the script (its script-depended)
}

// Transaction output with script pubkey in binary form.
// This is used for obtaining hashes of existing transactions
// and for compiling TxOutput for signing.
message TxOutputBinType {
	required uint64 amount = 1;
	required bytes script_pubkey = 2;
}

message TransactionType {
	optional uint32 version = 1 [default=1];
	repeated TxInputType inputs = 2;
	repeated TxOutputBinType outputs = 3;
	optional uint32 lock_time = 4 [default=0];
}