// Copyright (c) 2010 Satoshi Nakamoto
// Copyright (c) 2009-2016 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.

#include "chainparams.h"
#include "consensus/merkle.h"

#include "tinyformat.h"
#include "util.h"
#include "utilstrencodings.h"

#include <assert.h>

#include <boost/assign/list_of.hpp>

#include "chainparamsseeds.h"

static CBlock CreateGenesisBlock(const char* pszTimestamp, const CScript& genesisOutputScript, uint32_t nTime, uint32_t nNonce, uint32_t nBits, int32_t nVersion, const CAmount& genesisReward)
{
    CMutableTransaction txNew;
    txNew.nVersion = 1;
    txNew.vin.resize(1);
    txNew.vout.resize(1);
    txNew.vin[0].scriptSig = CScript() << 486604799 << CScriptNum(4) << std::vector<unsigned char>((const unsigned char*)pszTimestamp, (const unsigned char*)pszTimestamp + strlen(pszTimestamp));
    txNew.vout[0].nValue = genesisReward;
    txNew.vout[0].scriptPubKey = genesisOutputScript;

    CBlock genesis;
    genesis.nTime    = nTime;
    genesis.nBits    = nBits;
    genesis.nNonce   = nNonce;
    genesis.nVersion = nVersion;
    genesis.vtx.push_back(MakeTransactionRef(std::move(txNew)));
    genesis.hashPrevBlock.SetNull();
    genesis.hashMerkleRoot = BlockMerkleRoot(genesis);
    return genesis;
}

/**
 * Build the genesis block. Note that the output of its generation
 * transaction cannot be spent since it did not originally exist in the
 * database.
 *
 * CBlock(hash=000000000019d6, ver=1, hashPrevBlock=00000000000000, hashMerkleRoot=4a5e1e, nTime=1386325540, nBits=0x1e0ffff0, nNonce=99943, vtx=1)
 *   CTransaction(hash=4a5e1e, ver=1, vin.size=1, vout.size=1, nLockTime=0)
 *     CTxIn(COutPoint(000000, -1), coinbase 04ffff001d0104455468652054696d65732030332f4a616e2f32303039204368616e63656c6c6f72206f6e206272696e6b206f66207365636f6e64206261696c6f757420666f722062616e6b73)
 *     CTxOut(nValue=50.00000000, scriptPubKey=0x5F1DF16B2B704C8A578D0B)
 *   vMerkleTree: 4a5e1e
 */
static CBlock CreateGenesisBlock(uint32_t nTime, uint32_t nNonce, uint32_t nBits, int32_t nVersion, const CAmount& genesisReward)
{
    const char* pszTimestamp = "Nintondo";
    const CScript genesisOutputScript = CScript() << ParseHex("040184710fa689ad5023690c80f3a49c8f13f8d45b8c857fbcbc8bc4a8e4d3eb4b10f4d4604fa08dce601aaf0f470216fe1b51850b4acf21b179c45070ac7b03a9") << OP_CHECKSIG;
    return CreateGenesisBlock(pszTimestamp, genesisOutputScript, nTime, nNonce, nBits, nVersion, genesisReward);
}

/**
 * Main network
 */
/**
 * What makes a good checkpoint block?
 * + Is surrounded by blocks with reasonable timestamps
 *   (no blocks before with a timestamp after, none after with
 *    timestamp before)
 * + Contains no strange transactions
 */

class CMainParams : public CChainParams {
public:
    CMainParams() {
        strNetworkID = "main";
        consensus.nSubsidyHalvingInterval = 100000;
        // XXX: BIP heights and hashes all need to be updated to Dogecoin values
        consensus.BIP34Height = 227931;
        consensus.BIP34Hash = uint256S("0x000000000000024b89b42a942fe0d9fea3bb44ab7bd1b19115dd6a759c0808b8");
        consensus.BIP65Height = 388381; // 000000000000000004c2b624ed5d7756c508d90fd0da2c7c679febfa6c4735f0
        consensus.BIP66Height = 363725; // 00000000000000000379eaa19dce8c9b722d46ae6a57c2f1a988119488b50931
        consensus.powLimit = uint256S("0x00000fffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"); // ~uint256(0) >> 20;
        consensus.nPowTargetTimespan = 4 * 60 * 60; // pre-digishield: 4 hours
        consensus.nPowTargetSpacing = 60; // 1 minute
        consensus.fPowAllowMinDifficultyBlocks = false;
        consensus.fPowNoRetargeting = false;
        consensus.nRuleChangeActivationThreshold = 1916; // 95% of 2016
        consensus.nMinerConfirmationWindow = 2016; // nPowTargetTimespan / nPowTargetSpacing
        consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].bit = 28;
        consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nStartTime = 1199145601; // January 1, 2008
        consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nTimeout = 1230767999; // December 31, 2008

        // Deployment of BIP68, BIP112, and BIP113.
        // XXX: BIP heights and hashes all need to be updated to Dogecoin values
        consensus.vDeployments[Consensus::DEPLOYMENT_CSV].bit = 0;
        consensus.vDeployments[Consensus::DEPLOYMENT_CSV].nStartTime = 1462060800; // May 1st, 2016
        consensus.vDeployments[Consensus::DEPLOYMENT_CSV].nTimeout = 1493596800; // May 1st, 2017

        // Deployment of SegWit (BIP141, BIP143, and BIP147)
        // XXX: Disable SegWit in Dogecoin
        consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].bit = 1;
        consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].nStartTime = 1479168000; // November 15th, 2016.
        consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].nTimeout = 1510704000; // November 15th, 2017.

        // The best chain should have at least this much work.
        // XXX: Ensure this is a Dogecoin appropriate value
        consensus.nMinimumChainWork = uint256S("0x0000000000000000000000000000000000000000003f94d1ad391682fe038bf5");

        // By default assume that the signatures in ancestors of this block are valid.
        consensus.defaultAssumeValid = uint256S("0xca5eb72f1e0d160f1481f74d56d7cc4a27d91aa585ba012da8018a5fe934d61b"); // 1,600,000

        /**
         * The message start string is designed to be unlikely to occur in normal data.
         * The characters are rarely used upper ASCII, not valid as UTF-8, and produce
         * a large 32-bit integer with any alignment.
         */
        pchMessageStart[0] = 0xc0;
        pchMessageStart[1] = 0xc0;
        pchMessageStart[2] = 0xc0;
        pchMessageStart[3] = 0xc0;
        nDefaultPort = 22556;
        nPruneAfterHeight = 100000;

        genesis = CreateGenesisBlock(1386325540, 99943, 0x1e0ffff0, 1, 88 * COIN);
        consensus.hashGenesisBlock = genesis.GetHash();
        assert(consensus.hashGenesisBlock == uint256S("0x1a91e3dace36e2be3bf030a65679fe821aa1d6ef92e7c9902eb318182c355691"));
        assert(genesis.hashMerkleRoot == uint256S("0x5b2a3f53f605d62c53e62932dac6925e3d74afa5a4b459745c36d42d0ed26a69"));

        // Note that of those with the service bits flag, most only support a subset of possible options
        vSeeds.push_back(CDNSSeedData("multidoge.org", "seed.multidoge.org", true));
        vSeeds.push_back(CDNSSeedData("multidoge.org", "seed2.multidoge.org"));

        base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,30);
        base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,22);
        base58Prefixes[SECRET_KEY] =     std::vector<unsigned char>(1,158);
        base58Prefixes[EXT_PUBLIC_KEY] = boost::assign::list_of(0x02)(0xfa)(0xca)(0xfd).convert_to_container<std::vector<unsigned char> >();
        base58Prefixes[EXT_SECRET_KEY] = boost::assign::list_of(0x02)(0xfa)(0xc3)(0x98).convert_to_container<std::vector<unsigned char> >();

        //TODO: fix this for dogecoin -- plddr
        //vFixedSeeds = std::vector<SeedSpec6>(pnSeed6_main, pnSeed6_main + ARRAYLEN(pnSeed6_main));
        vFixedSeeds.clear();

        fMiningRequiresPeers = true;
        fDefaultConsistencyChecks = false;
        fRequireStandard = true;
        fMineBlocksOnDemand = false;

        checkpointData = (CCheckpointData) {
            boost::assign::map_list_of
            (      0, uint256S("0x1a91e3dace36e2be3bf030a65679fe821aa1d6ef92e7c9902eb318182c355691"))
            (  42279, uint256S("0x8444c3ef39a46222e87584ef956ad2c9ef401578bd8b51e8e4b9a86ec3134d3a"))
            (  42400, uint256S("0x557bb7c17ed9e6d4a6f9361cfddf7c1fc0bdc394af7019167442b41f507252b4"))
            ( 104679, uint256S("0x35eb87ae90d44b98898fec8c39577b76cb1eb08e1261cfc10706c8ce9a1d01cf"))
            ( 128370, uint256S("0x3f9265c94cab7dc3bd6a2ad2fb26c8845cb41cff437e0a75ae006997b4974be6"))
            ( 145000, uint256S("0xcc47cae70d7c5c92828d3214a266331dde59087d4a39071fa76ddfff9b7bde72"))
            ( 250000, uint256S("0x0e4bcfe8d970979f7e30e2809ab51908d435677998cf759169407824d4f36460"))
            ( 350000, uint256S("0x2bdcba23a47049e69c4fec4c425462e30f3d21d25223bde0ed36be4ea59a7075"))
            ( 371337, uint256S("0x60323982f9c5ff1b5a954eac9dc1269352835f47c2c5222691d80f0d50dcf053"))
            ( 450000, uint256S("0xd279277f8f846a224d776450aa04da3cf978991a182c6f3075db4c48b173bbd7"))
            ( 550000, uint256S("0xea8ed5430b221549a6a26f104b424ffd782ff4c8409bbbc5eaf3d83932825691"))
            ( 650000, uint256S("0x486fcebc9a7288676a7614e1b6fd085d5d71019aead17d354a8bc2c3fde516e9"))
            ( 771275, uint256S("0x1b7d789ed82cbdc640952e7e7a54966c6488a32eaad54fc39dff83f310dbaaed"))
        };

        chainTxData = ChainTxData{
            // Data as of block 00000000000000000166d612d5595e2b1cd88d71d695fc580af64d8da8658c23 (height 446482).
            1435666139, // * UNIX timestamp of last checkpoint block
            19567197,   // * total number of transactions between genesis and last checkpoint
                        //   (the tx=... number in the SetBestChain debug.log lines)
            13000.0 // * estimated number of transactions per day after checkpoint
        };
    }
};
static CMainParams mainParams;

/**
 * Testnet (v3)
 */
class CTestNetParams : public CChainParams {
public:
    CTestNetParams() {
        strNetworkID = "test";
        consensus.nSubsidyHalvingInterval = 100000;
        // XXX: BIP heights and hashes all need to be updated to Dogecoin values
        consensus.BIP34Height = 21111;
        consensus.BIP34Hash = uint256S("0x0000000023b3a96d3484e5abb3755c413e7d41500f8e2a5c3f0dd01299cd8ef8");
        consensus.BIP65Height = 581885; // 00000000007f6655f22f98e72ed80d8b06dc761d5da09df0fa1dc4be4f861eb6
        consensus.BIP66Height = 330776; // 000000002104c8c45e99a8853285a3b592602a3ccde2b832481da85e9e4ba182
        consensus.powLimit = uint256S("0x00000fffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"); // ~uint256(0) >> 20;
        consensus.nPowTargetTimespan = 4 * 60 * 60; // pre-digishield: 4 hours
        consensus.nPowTargetSpacing = 60; // 1 minute
        consensus.fPowAllowMinDifficultyBlocks = true;
        consensus.fPowNoRetargeting = false;
        consensus.nRuleChangeActivationThreshold = 1512; // 75% for testchains
        consensus.nMinerConfirmationWindow = 240; // nPowTargetTimespan / nPowTargetSpacing
        consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].bit = 28;
        consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nStartTime = 1199145601; // January 1, 2008
        consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nTimeout = 1230767999; // December 31, 2008

        // Deployment of BIP68, BIP112, and BIP113.
        // XXX: BIP heights and hashes all need to be updated to Dogecoin values
        consensus.vDeployments[Consensus::DEPLOYMENT_CSV].bit = 0;
        consensus.vDeployments[Consensus::DEPLOYMENT_CSV].nStartTime = 1456790400; // March 1st, 2016
        consensus.vDeployments[Consensus::DEPLOYMENT_CSV].nTimeout = 1493596800; // May 1st, 2017

        // Deployment of SegWit (BIP141, BIP143, and BIP147)
        // XXX: Ensure SegWit is disabled
        consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].bit = 1;
        consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].nStartTime = 1462060800; // May 1st 2016
        consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].nTimeout = 1493596800; // May 1st 2017

        // The best chain should have at least this much work.
        // XXX: Update to a Dogecoin appropriate value
        consensus.nMinimumChainWork = uint256S("0x00000000000000000000000000000000000000000000001f057509eba81aed91");

        // By default assume that the signatures in ancestors of this block are valid.
        consensus.defaultAssumeValid = uint256S("0x6943eaeaba98dc7d09f7e73398daccb4abcabb18b66c8c875e52b07638d93951"); // 900,000

        pchMessageStart[0] = 0xfc;
        pchMessageStart[1] = 0xc1;
        pchMessageStart[2] = 0xb7;
        pchMessageStart[3] = 0xdc;
        nDefaultPort = 44556;
        nPruneAfterHeight = 1000;

        genesis = CreateGenesisBlock(1391503289, 997879, 0x1e0ffff0, 1, 88 * COIN);
        consensus.hashGenesisBlock = genesis.GetHash();
        assert(consensus.hashGenesisBlock == uint256S("0xbb0a78264637406b6360aad926284d544d7049f45189db5664f3c4d07350559e"));
        assert(genesis.hashMerkleRoot == uint256S("0x5b2a3f53f605d62c53e62932dac6925e3d74afa5a4b459745c36d42d0ed26a69"));

        vFixedSeeds.clear();
        vSeeds.clear();
        // nodes with support for servicebits filtering should be at the top
        vSeeds.push_back(CDNSSeedData("jrn.me.uk", "testseed.jrn.me.uk"));

        base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,113); // 0x71
        base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,196); // 0xc4
        base58Prefixes[SECRET_KEY] =     std::vector<unsigned char>(1,241); // 0xf1
        base58Prefixes[EXT_PUBLIC_KEY] = boost::assign::list_of(0x04)(0x35)(0x87)(0xcf).convert_to_container<std::vector<unsigned char> >();
        base58Prefixes[EXT_SECRET_KEY] = boost::assign::list_of(0x04)(0x35)(0x83)(0x94).convert_to_container<std::vector<unsigned char> >();

        //TODO: fix this for dogecoin -- plddr
        //vFixedSeeds = std::vector<SeedSpec6>(pnSeed6_test, pnSeed6_test + ARRAYLEN(pnSeed6_test));

        fMiningRequiresPeers = true;
        fDefaultConsistencyChecks = false;
        fRequireStandard = false;
        fMineBlocksOnDemand = false;


        checkpointData = (CCheckpointData) {
            boost::assign::map_list_of
            ( 0, uint256S("0xbb0a78264637406b6360aad926284d544d7049f45189db5664f3c4d07350559e"))
            ( 483173, uint256S("0xa804201ca0aceb7e937ef7a3c613a9b7589245b10cc095148c4ce4965b0b73b5"))
            ( 591117, uint256S("0x5f6b93b2c28cedf32467d900369b8be6700f0649388a7dbfd3ebd4a01b1ffad8"))
            ( 658924, uint256S("0xed6c8324d9a77195ee080f225a0fca6346495e08ded99bcda47a8eea5a8a620b"))
            ( 703635, uint256S("0x839fa54617adcd582d53030a37455c14a87a806f6615aa8213f13e196230ff7f"))
        };

        chainTxData = ChainTxData{
            // Data as of block 00000000c2872f8f8a8935c8e3c5862be9038c97d4de2cf37ed496991166928a (height 1063660)
            1440601451, // * UNIX timestamp of last checkpoint block
            1119061,    // * total number of transactions between genesis and last checkpoint
            1000 // * estimated number of transactions per day after checkpoint
        };

    }
};
static CTestNetParams testNetParams;

/**
 * Regression test
 */
class CRegTestParams : public CChainParams {
public:
    CRegTestParams() {
        strNetworkID = "regtest";
        consensus.nSubsidyHalvingInterval = 150;
        consensus.BIP34Height = 100000000; // BIP34 has not activated on regtest (far in the future so block v1 are not rejected in tests)
        consensus.BIP34Hash = uint256();
        consensus.BIP65Height = 1351; // BIP65 activated on regtest (Used in rpc activation tests)
        consensus.BIP66Height = 1251; // BIP66 activated on regtest (Used in rpc activation tests)
        consensus.powLimit = uint256S("0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"); // ~uint256(0) >> 1;
        consensus.nPowTargetTimespan = 14 * 24 * 60 * 60; // two weeks
        consensus.nPowTargetSpacing = 10 * 60;
        consensus.fPowAllowMinDifficultyBlocks = true;
        consensus.fPowNoRetargeting = true;
        consensus.nRuleChangeActivationThreshold = 108; // 75% for testchains
        consensus.nMinerConfirmationWindow = 60; // Faster than normal for regtest (60 instead of 240)
        consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].bit = 28;
        consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nStartTime = 0;
        consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nTimeout = 999999999999ULL;
        consensus.vDeployments[Consensus::DEPLOYMENT_CSV].bit = 0;
        consensus.vDeployments[Consensus::DEPLOYMENT_CSV].nStartTime = 0;
        consensus.vDeployments[Consensus::DEPLOYMENT_CSV].nTimeout = 999999999999ULL;
        consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].bit = 1;
        consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].nStartTime = 0;
        consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].nTimeout = 999999999999ULL;

        // The best chain should have at least this much work.
        consensus.nMinimumChainWork = uint256S("0x00");

        // By default assume that the signatures in ancestors of this block are valid.
        consensus.defaultAssumeValid = uint256S("0x00");

        pchMessageStart[0] = 0xfa;
        pchMessageStart[1] = 0xbf;
        pchMessageStart[2] = 0xb5;
        pchMessageStart[3] = 0xda;
        nDefaultPort = 18444;
        nPruneAfterHeight = 1000;

        genesis = CreateGenesisBlock(1296688602, 2, 0x207fffff, 1, 88 * COIN);
        consensus.hashGenesisBlock = genesis.GetHash();
        assert(consensus.hashGenesisBlock == uint256S("0x3d2160a3b5dc4a9d62e7e66a295f70313ac808440ef7400d6c0772171ce973a5"));
        // XXX: Fix for Dogecoin
        // assert(genesis.hashMerkleRoot == uint256S("0x4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b"));

        vFixedSeeds.clear(); //!< Regtest mode doesn't have any fixed seeds.
        vSeeds.clear();      //!< Regtest mode doesn't have any DNS seeds.

        fMiningRequiresPeers = false;
        fDefaultConsistencyChecks = true;
        fRequireStandard = false;
        fMineBlocksOnDemand = true;

        checkpointData = (CCheckpointData){
            boost::assign::map_list_of
            ( 0, uint256S("0x3d2160a3b5dc4a9d62e7e66a295f70313ac808440ef7400d6c0772171ce973a5"))
        };

        chainTxData = ChainTxData{
            0,
            0,
            0
        };

        base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,111);
        base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,196);
        base58Prefixes[SECRET_KEY] =     std::vector<unsigned char>(1,239);
        base58Prefixes[EXT_PUBLIC_KEY] = boost::assign::list_of(0x04)(0x35)(0x87)(0xCF).convert_to_container<std::vector<unsigned char> >();
        base58Prefixes[EXT_SECRET_KEY] = boost::assign::list_of(0x04)(0x35)(0x83)(0x94).convert_to_container<std::vector<unsigned char> >();
    }

    void UpdateBIP9Parameters(Consensus::DeploymentPos d, int64_t nStartTime, int64_t nTimeout)
    {
        consensus.vDeployments[d].nStartTime = nStartTime;
        consensus.vDeployments[d].nTimeout = nTimeout;
    }
};
static CRegTestParams regTestParams;

static CChainParams *pCurrentParams = 0;

const CChainParams &Params() {
    assert(pCurrentParams);
    return *pCurrentParams;
}

CChainParams& Params(const std::string& chain)
{
    if (chain == CBaseChainParams::MAIN)
            return mainParams;
    else if (chain == CBaseChainParams::TESTNET)
            return testNetParams;
    else if (chain == CBaseChainParams::REGTEST)
            return regTestParams;
    else
        throw std::runtime_error(strprintf("%s: Unknown chain %s.", __func__, chain));
}

void SelectParams(const std::string& network)
{
    SelectBaseParams(network);
    pCurrentParams = &Params(network);
}

void UpdateRegtestBIP9Parameters(Consensus::DeploymentPos d, int64_t nStartTime, int64_t nTimeout)
{
    regTestParams.UpdateBIP9Parameters(d, nStartTime, nTimeout);
}