// Copyright (c) 2014-2016 The btcsuite developers
// Use of this source code is governed by an ISC
// license that can be found in the LICENSE file.

package dagconfig

import (
	"math"
	"time"

	"github.com/kaspanet/kaspad/util/daghash"
	"github.com/kaspanet/kaspad/util/subnetworkid"
	"github.com/kaspanet/kaspad/wire"
)

var genesisTxIns = []*wire.TxIn{
	{
		PreviousOutpoint: wire.Outpoint{
			TxID:  daghash.TxID{},
			Index: math.MaxUint32,
		},
		SignatureScript: []byte{
			0x00, 0x00, 0x0b, 0x2f, 0x50, 0x32, 0x53, 0x48,
			0x2f, 0x62, 0x74, 0x63, 0x64, 0x2f,
		},
		Sequence: math.MaxUint64,
	},
}
var genesisTxOuts = []*wire.TxOut{}

var genesisTxPayload = []byte{
	0x17,                                           // Varint
	0xa9, 0x14, 0xda, 0x17, 0x45, 0xe9, 0xb5, 0x49, // OP-TRUE p2sh
	0xbd, 0x0b, 0xfa, 0x1a, 0x56, 0x99, 0x71, 0xc7,
	0x7e, 0xba, 0x30, 0xcd, 0x5a, 0x4b, 0x87,
}

// genesisCoinbaseTx is the coinbase transaction for the genesis blocks for
// the main network, regression test network, and test network.
var genesisCoinbaseTx = wire.NewSubnetworkMsgTx(1, genesisTxIns, genesisTxOuts, subnetworkid.SubnetworkIDCoinbase, 0, genesisTxPayload)

// genesisHash is the hash of the first block in the block DAG for the main
// network (genesis block).
var genesisHash = daghash.Hash([daghash.HashSize]byte{
	0x9b, 0x22, 0x59, 0x44, 0x66, 0xf0, 0xbe, 0x50,
	0x7c, 0x1c, 0x8a, 0xf6, 0x06, 0x27, 0xe6, 0x33,
	0x38, 0x7e, 0xd1, 0xd5, 0x8c, 0x42, 0x59, 0x1a,
	0x31, 0xac, 0x9a, 0xa6, 0x2e, 0xd5, 0x2b, 0x0f,
})

// genesisMerkleRoot is the hash of the first transaction in the genesis block
// for the main network.
var genesisMerkleRoot = daghash.Hash([daghash.HashSize]byte{
	0x72, 0x10, 0x35, 0x85, 0xdd, 0xac, 0x82, 0x5c,
	0x49, 0x13, 0x9f, 0xc0, 0x0e, 0x37, 0xc0, 0x45,
	0x71, 0xdf, 0xd9, 0xf6, 0x36, 0xdf, 0x4c, 0x42,
	0x72, 0x7b, 0x9e, 0x86, 0xdd, 0x37, 0xd2, 0xbd,
})

// genesisBlock defines the genesis block of the block DAG which serves as the
// public transaction ledger for the main network.
var genesisBlock = wire.MsgBlock{
	Header: wire.BlockHeader{
		Version:              1,
		ParentHashes:         []*daghash.Hash{},
		HashMerkleRoot:       &genesisMerkleRoot,
		AcceptedIDMerkleRoot: &daghash.Hash{},
		UTXOCommitment:       &daghash.ZeroHash,
		Timestamp:            time.Unix(0x5cdac4b0, 0),
		Bits:                 0x207fffff,
		Nonce:                0x1,
	},
	Transactions: []*wire.MsgTx{genesisCoinbaseTx},
}

// regTestGenesisHash is the hash of the first block in the block chain for the
// regression test network (genesis block).
var regTestGenesisHash = genesisHash

// regTestGenesisMerkleRoot is the hash of the first transaction in the genesis
// block for the regression test network. It is the same as the merkle root for
// the main network.
var regTestGenesisMerkleRoot = genesisMerkleRoot

// regTestGenesisBlock defines the genesis block of the block chain which serves
// as the public transaction ledger for the regression test network.
var regTestGenesisBlock = genesisBlock

// testNetGenesisHash is the hash of the first block in the block chain for the
// test network.
var testNetGenesisHash = genesisHash

// testNetGenesisMerkleRoot is the hash of the first transaction in the genesis
// block for the test network. It is the same as the merkle root for the main
// network.
var testNetGenesisMerkleRoot = genesisMerkleRoot

// testNetGenesisBlock defines the genesis block of the block chain which
// serves as the public transaction ledger for the test network.
var testNetGenesisBlock = genesisBlock

// simNetGenesisHash is the hash of the first block in the block chain for the
// simulation test network.
var simNetGenesisHash = genesisHash

// simNetGenesisMerkleRoot is the hash of the first transaction in the genesis
// block for the simulation test network. It is the same as the merkle root for
// the main network.
var simNetGenesisMerkleRoot = genesisMerkleRoot

// simNetGenesisBlock defines the genesis block of the block chain which serves
// as the public transaction ledger for the simulation test network.
var simNetGenesisBlock = genesisBlock

// devNetGenesisCoinbaseTx is the coinbase transaction for the genesis blocks for
// the main network, regression test network, and test network.
var devNetGenesisCoinbaseTx = genesisCoinbaseTx

// devGenesisHash is the hash of the first block in the block DAG for the development
// network (genesis block).
var devNetGenesisHash = daghash.Hash([daghash.HashSize]byte{
	0xf4, 0xd6, 0x37, 0x0b, 0xc6, 0x67, 0x41, 0x90,
	0x06, 0x57, 0xef, 0x65, 0x45, 0x07, 0x3a, 0x50,
	0xb7, 0x85, 0x21, 0xb9, 0xa2, 0xe3, 0xf5, 0x9e,
	0xe0, 0x45, 0x9b, 0xb0, 0xab, 0x33, 0x00, 0x00,
})

// devNetGenesisMerkleRoot is the hash of the first transaction in the genesis block
// for the devopment network.
var devNetGenesisMerkleRoot = genesisMerkleRoot

// devNetGenesisBlock defines the genesis block of the block chain which serves as the
// public transaction ledger for the development network.
var devNetGenesisBlock = wire.MsgBlock{
	Header: wire.BlockHeader{
		Version:              1,
		ParentHashes:         []*daghash.Hash{},
		HashMerkleRoot:       &devNetGenesisMerkleRoot,
		AcceptedIDMerkleRoot: &daghash.Hash{},
		UTXOCommitment:       &daghash.ZeroHash,
		Timestamp:            time.Unix(0x5d021d3e, 0),
		Bits:                 0x1e7fffff,
		Nonce:                0x5221,
	},
	Transactions: []*wire.MsgTx{devNetGenesisCoinbaseTx},
}