// Copyright 2017-2018 DERO Project. All rights reserved.
// Use of this source code in any form is governed by RESEARCH license.
// license can be found in the LICENSE file.
// GPG: 0F39 E425 8C65 3947 702A  8234 08B2 0360 A03A 9DE8
//
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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package globals

//import  "github.com/vmihailenco/msgpack"

import "github.com/arnaucode/derosuite/crypto"
import "github.com/arnaucode/derosuite/crypto/ringct"

// this structure is way blockchain sends outputs to wallet
// this structure is also used internal by blockchain itself, when TXs are expanded and verified

// this structure needs to be expandable without breaking legacy
// This structure is the only information needed by wallet to decode previous and send new txs
// This opens up the case for mobile wallets without downloading entire blockchain
// Some of the fields get duplicated if a tx has multiple vouts
type TX_Output_Data struct {
	TXID          crypto.Hash `msgpack:"T"` // the transaction id in which this was found, we are duplicating it for all vouts
	Tx_Public_Key crypto.Key  `msgpack:"P"` // the public key of the tx ,  we are duplicating it for all vouts within the TX
	// this is extracted from the extra field

	// this data is consumed by the blockchain itself while expanding tx
	InKey           ringct.CtKey     `msgpack:"D"`           // contains the vout key and encrypted commitment
	ECDHTuple       ringct.ECdhTuple `msgpack:"E"`           // encrypted Amounts, will be empty for miner tx
	SenderPk        crypto.Key       `msgpack:"K"`           // from the outpk
	Amount          uint64           `msgpack:"A,omitempty"` // amount used for miner tx
	SigType         uint64           `msgpack:"S"`           // which ringct type the output was of
	Index_within_tx uint64           `msgpack:"W"`           // output index  of vout within the tx
	Index_Global    uint64           `msgpack:"G"`           // position in global index
	Height          uint64           `msgpack:"H"`           // height to which this belongs
	Unlock_Height   uint64           `msgpack:"U"`           // height at which it will unlock
	Block_Time      uint64           `msgpack:"B"`           // when was this block found in epoch

	Key_Images []crypto.Key `msgpack:"KI,omitempty"` // all the key images consumed within the TX
	PaymentID  []byte       `msgpack:"I,omitempty"`  // payment ID contains both unencrypted (33byte)/encrypted (9 bytes)

	// TODO this structure must also keep payment ids and encrypted payment ids
}