syntax = "proto2";
package hw.trezor.messages.stellar;

// Sugar for easier handling in Java
option java_package = "com.satoshilabs.trezor.lib.protobuf";
option java_outer_classname = "TrezorMessageStellar";

/**
 * Describes a Stellar asset
 * @embed
 */
message StellarAssetType {
    optional uint32 type = 1;       // 0 = native asset (XLM), 1 = alphanum 4, 2 = alphanum 12
    optional string code = 2;       // for non-native assets, string describing the code
    optional string issuer = 3;     // issuing address
}

/**
 * Request: Address at the specified index
 * @start
 * @next StellarAddress
 */
message StellarGetAddress {
    repeated uint32 address_n = 1;  // BIP-32 path. For compatibility with other wallets, must be m/44'/148'/index'
    optional bool show_display = 2; // optionally show on display before sending the result
}

/**
 * Response: Address for the given index
 * @end
 */
message StellarAddress {
    optional string address = 1;    // Address in Stellar format (base32 of a pubkey with checksum)
}

/**
 * Request: ask device to sign Stellar transaction
 * @start
 * @next StellarTxOpRequest
 */
message StellarSignTx {
    repeated uint32 address_n = 2;          // BIP-32 path. For compatibility with other wallets, must be m/44'/148'/index'
    optional string network_passphrase = 3; // passphrase for signing messages on the destination network
    optional string source_account = 4;     // source account address
    optional uint32 fee = 5;                // Fee (in stroops) for the transaction
    optional uint64 sequence_number = 6;    // transaction sequence number
    optional uint32 timebounds_start = 8;   // unix timestamp (client must truncate this to 32 bytes)
    optional uint32 timebounds_end = 9;     // unix timestamp (client must truncate this to 32 bytes)
    optional uint32 memo_type = 10;         // 0 = none, 1 = text, 2 = id, 3 = hash, 4 = return
    optional string memo_text = 11;         // up to 28 characters (4 bytes are for length)
    optional uint64 memo_id = 12;           // 8-byte uint64
    optional bytes memo_hash = 13;          // 32 bytes representing a hash
    optional uint32 num_operations = 14;    // number of operations in this transaction
}

/**
 * Response: device is ready for client to send the next operation
 * @next StellarPaymentOp
 * @next StellarCreateAccountOp
 * @next StellarPathPaymentOp
 * @next StellarManageOfferOp
 * @next StellarCreatePassiveOfferOp
 * @next StellarSetOptionsOp
 * @next StellarChangeTrustOp
 * @next StellarAllowTrustOp
 * @next StellarAccountMergeOp
 * @next StellarManageDataOp
 * @next StellarBumpSequenceOp
 */
message StellarTxOpRequest {
}

/**
 * Request: ask device to confirm this operation type
 * @next StellarTxOpRequest
 * @next StellarSignedTx
 */
message StellarPaymentOp {
    optional string source_account = 1;         // (optional) source account address
    optional string destination_account = 2;    // destination account address
    optional StellarAssetType asset = 3;        // asset involved in the operation
    optional sint64 amount = 4;                 // amount of the given asset to pay
}

/**
 * Request: ask device to confirm this operation type
 * @next StellarTxOpRequest
 * @next StellarSignedTx
 */
message StellarCreateAccountOp {
    optional string source_account = 1;     // (optional) source account address
    optional string new_account = 2;        // account address to create
    optional sint64 starting_balance = 3;   // initial starting balance for the new account
}

/**
 * Request: ask device to confirm this operation type
 * @next StellarTxOpRequest
 * @next StellarSignedTx
 */
message StellarPathPaymentOp {
    optional string source_account = 1;         // (optional) source address
    optional StellarAssetType send_asset = 2;
    optional sint64 send_max = 3;
    optional string destination_account = 4;
    optional StellarAssetType destination_asset = 5;
    optional sint64 destination_amount = 6;
    repeated StellarAssetType paths = 7;
}

/**
 * Request: ask device to confirm this operation type
 * @next StellarTxOpRequest
 * @next StellarSignedTx
 */
message StellarManageOfferOp {
    optional string source_account = 1;             // (optional) source account address
    optional StellarAssetType selling_asset = 2;
    optional StellarAssetType buying_asset = 3;
    optional sint64 amount = 4;
    optional uint32 price_n = 5;                    // Price numerator
    optional uint32 price_d = 6;                    // Price denominator
    optional uint64 offer_id = 7;                   // Offer ID for updating an existing offer
}

/**
 * Request: ask device to confirm this operation type
 * @next StellarTxOpRequest
 * @next StellarSignedTx
 */
message StellarCreatePassiveOfferOp {
    optional string source_account = 1;             // (optional) source account address
    optional StellarAssetType selling_asset = 2;
    optional StellarAssetType buying_asset = 3;
    optional sint64 amount = 4;
    optional uint32 price_n = 5;                    // Price numerator
    optional uint32 price_d = 6;                    // Price denominator
}

/**
 * Request: ask device to confirm this operation type
 * @next StellarTxOpRequest
 * @next StellarSignedTx
 */
message StellarSetOptionsOp {
    optional string source_account = 1;                 // (optional) source account address
    optional string inflation_destination_account = 2;  // (optional) inflation destination address
    optional uint32 clear_flags = 3;
    optional uint32 set_flags = 4;
    optional uint32 master_weight = 5;
    optional uint32 low_threshold = 6;
    optional uint32 medium_threshold = 7;
    optional uint32 high_threshold = 8;
    optional string home_domain = 9;
    optional uint32 signer_type = 10;
    optional bytes signer_key = 11;
    optional uint32 signer_weight = 12;
}

/**
 * Request: ask device to confirm this operation type
 * @next StellarTxOpRequest
 * @next StellarSignedTx
 */
message StellarChangeTrustOp {
    optional string source_account = 1;     // (optional) source account address
    optional StellarAssetType asset = 2;
    optional uint64 limit = 3;
}

/**
 * Request: ask device to confirm this operation type
 * @next StellarTxOpRequest
 * @next StellarSignedTx
 */
message StellarAllowTrustOp {
    optional string source_account = 1;     // (optional) source account address
    optional string trusted_account = 2;    // The account being allowed to hold the asset
    optional uint32 asset_type = 3;         // 1 = 4-character, 2 = 12-character
    optional string asset_code = 4;         // human-readable asset code
    optional uint32 is_authorized = 5;
}

/**
 * Request: ask device to confirm this operation type
 * @next StellarTxOpRequest
 * @next StellarSignedTx
 */
message StellarAccountMergeOp {
    optional string source_account = 1;         // (optional) source account address
    optional string destination_account = 2;    // destination account address
}

/**
 * Request: ask device to confirm this operation type
 * @next StellarTxOpRequest
 * @next StellarSignedTx
 */
message StellarManageDataOp {
    optional string source_account = 1; // (optional) source account address
    optional string key = 2;
    optional bytes value = 3;           // 64 bytes of arbitrary data
}

/**
 * Request: ask device to confirm this operation type
 * @next StellarTxOpRequest
 * @next StellarSignedTx
 */
message StellarBumpSequenceOp {
    optional string source_account = 1; // (optional) source account address
    optional uint64 bump_to = 2;        // new sequence number
}

/**
 * Response: signature for transaction
 * @end
 */
message StellarSignedTx {
    optional bytes public_key = 1;  // public key for the private key used to sign data
    optional bytes signature = 2;   // signature suitable for sending to the Stellar network
}
