// Copyright (c) 2010 Satoshi Nakamoto
// Copyright (c) 2009-2014 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 "tinyformat.h"
#include "util.h"
#include "utilstrencodings.h"

#include <assert.h>

#include <boost/assign/list_of.hpp>
#include <stdio.h>

#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 = CScript() << ParseHex("04678afdb0fe5548271967f1a67130b7105cd6a828e03909a67962e0ea1f61deb649f6bc3f4cef38c4f35504e51ec112de5c384df7ba0b8d578a4c702b6bf11d5f") << OP_CHECKSIG;
    //txNew.vout[0].scriptPubKey = CScript() << ParseHex("0425caecb9fbf6cf50979644e85c11e3ec9007fd477fab9683648c6539e59b59c3a4d9b9c0b552c37eee6476f3e0d8425ac0346fe69ad61628b8c340d42fbfa3fd") << OP_CHECKSIG;
    //txNew.vout[0].scriptPubKey = CScript() << OP_DUP << OP_HASH160 << ParseHex("e5ff2d9e3a254622ae493573169c0fa94c82fe4f") << OP_EQUALVERIFY << OP_CHECKSIG;
    txNew.vout[0].scriptPubKey = genesisOutputScript;

    CBlock genesis;
    genesis.nTime    = nTime;
    genesis.nBits    = nBits;
    genesis.nNonce   = nNonce;
    genesis.nVersion = nVersion;
    genesis.vtx.push_back(txNew);
    genesis.hashPrevBlock.SetNull();
    genesis.hashMerkleRoot = genesis.ComputeMerkleRoot();
    genesis.hashClaimTrie = uint256S("0x0000000000000000000000000000000000000000000000000000000000000001");

    /*bool found = false;
    while (!found)
    {
        genesis.nNonce += 1;
        consensus.hashGenesisBlock = genesis.GetHash();
        if (CheckProofOfWork2(consensus.hashGenesisBlock, consensus.powLimit.GetCompact(), consensus))
        {
            std::cout << "nonce: " << genesis.nNonce << std::endl;
            std::cout << "hex: " << consensus.hashGenesisBlock.GetHex() << std::endl;
            found = true;
        }
    }*/
    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=1231006505, nBits=1d00ffff, nNonce=2083236893, 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 = "insert timestamp string";//"The Times 03/Jan/2009 Chancellor on brink of second bailout for banks";
    const CScript genesisOutputScript = CScript() << OP_DUP << OP_HASH160 << ParseHex("345991dbf57bfb014b87006acdfafbfc5fe8292f") << OP_EQUALVERIFY << 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 = "lbrycrd";
        consensus.nSubsidyHalvingInterval = 2100000;
        consensus.nMajorityEnforceBlockUpgrade = 750;
        consensus.nMajorityRejectBlockOutdated = 950;
        consensus.nMajorityWindow = 1000;
        consensus.powLimit = uint256S("0000ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff");
        consensus.nPowTargetTimespan = 30 * 60 * 12;//14 * 24 * 60 * 60; // two weeks
        consensus.nPowTargetSpacing = 30;
        consensus.fPowAllowMinDifficultyBlocks = false;
        consensus.fPowNoRetargeting = false;
        /** 
         * 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] = 0xfa;
        pchMessageStart[1] = 0xe4;
        pchMessageStart[2] = 0xaa;
        pchMessageStart[3] = 0xf1;
        vAlertPubKey = ParseHex("04fc9702847840aaf195de8442ebecedf5b095cdbb9bc716bda9110971b28a49e0ead8564ff0db22209e0374782c093bb899692d524e9d6a6956e7c5ecbcd68284");
        nDefaultPort = 9246;
        nMaxTipAge = 24 * 60 * 60;
        nPruneAfterHeight = 100000;

        genesis = CreateGenesisBlock(1417453734, 7885, 0x1f00ffff, 1, 50 * COIN);
        consensus.hashGenesisBlock = genesis.GetHash();
        //printf("hex: %s\n", consensus.hashGenesisBlock.GetHex().c_str());
        //assert(consensus.hashGenesisBlock == uint256S("0x000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f"));
        //assert(consensus.hashGenesisBlock == uint256S("0x00ef6ded2b610fc5e4f06d187d12136bd5fba7b932fa0b66bf353c7c1648ec9c"));
        assert(consensus.hashGenesisBlock == uint256S("0x0000343f59c49eb433ba3a37ee4b3493ff014ee9b266f610bb3cd1b36927787a"));
        //printf("%s\n", genesis.hashMerkleRoot.GetHex().c_str());
        //assert(genesis.hashMerkleRoot == uint256("0x4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b"));
        //assert(genesis.hashMerkleRoot == uint256S("0xa7d51d407092059a2beeffab22e65d6176cfb3c33b93515109480aa7c81c9141"));
        assert(genesis.hashMerkleRoot == uint256S("0x93621531f4de4b27d4ffdf785ef12855f2b18687e2141466ff50e2848d83f551"));

        vSeeds.clear();
        vFixedSeeds.clear();

        base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,0);
        base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,5);
        base58Prefixes[SECRET_KEY] =     std::vector<unsigned char>(1,128);
        base58Prefixes[EXT_PUBLIC_KEY] = boost::assign::list_of(0x04)(0x88)(0xB2)(0x1E).convert_to_container<std::vector<unsigned char> >();
        base58Prefixes[EXT_SECRET_KEY] = boost::assign::list_of(0x04)(0x88)(0xAD)(0xE4).convert_to_container<std::vector<unsigned char> >();

        vFixedSeeds = std::vector<SeedSpec6>(pnSeed6_main, pnSeed6_main + ARRAYLEN(pnSeed6_main));

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

        checkpointData = (CCheckpointData) {
            boost::assign::map_list_of
            (     0, uint256S("0x0000343f59c49eb433ba3a37ee4b3493ff014ee9b266f610bb3cd1b36927787a")),
            1417453734, // * UNIX timestamp of last checkpoint block
            1,   // * total number of transactions between genesis and last checkpoint
                        //   (the tx=... number in the SetBestChain debug.log lines)
            0.0     // * estimated number of transactions per day after checkpoint
        };
    }
};
static CMainParams mainParams;

/**
 * Testnet (v3)
 */
class CTestNetParams : public CChainParams {
public:
    CTestNetParams() {
        strNetworkID = "test";


        consensus.nSubsidyHalvingInterval = 2100000;
        consensus.nMajorityEnforceBlockUpgrade = 750;
        consensus.nMajorityRejectBlockOutdated = 950;
        consensus.nMajorityWindow = 1000;
        consensus.powLimit = uint256S("0000ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff");
        consensus.nPowTargetTimespan = 30 * 60 * 12;//14 * 24 * 60 * 60; // two weeks
        consensus.nPowTargetSpacing = 30;
        consensus.fPowAllowMinDifficultyBlocks = false;
        consensus.fPowNoRetargeting = false;
        pchMessageStart[0] = 0x1d;
        pchMessageStart[1] = 0x0c;
        pchMessageStart[2] = 0xaa;
        pchMessageStart[3] = 0xd1;
        vAlertPubKey = ParseHex("04302390343f91cc401d56d68b123028bf52e5fca1939df127f63c6467cdf9c8e2c14b61104cf817d0b780da337893ecc4aaff1309e536162dabbdb45200ca2b0a");
        nDefaultPort = 19246;
        nMaxTipAge = 0x7fffffff;
        nPruneAfterHeight = 1000;

        genesis = CreateGenesisBlock(1417453734, 7885, 0x1f00ffff, 1, 50 * COIN);
        consensus.hashGenesisBlock = genesis.GetHash();
        //std::cout << "testnet genesis hash: " << genesis.GetHash().GetHex() << std::endl;
        //std::cout << "testnet merkle hash: " << genesis.hashMerkleRoot.GetHex() << std::endl;
        assert(consensus.hashGenesisBlock == uint256S("0x0000343f59c49eb433ba3a37ee4b3493ff014ee9b266f610bb3cd1b36927787a"));
        assert(genesis.hashMerkleRoot == uint256S("0x93621531f4de4b27d4ffdf785ef12855f2b18687e2141466ff50e2848d83f551"));

        vFixedSeeds.clear();
        vSeeds.clear();
        //vSeeds.push_back(CDNSSeedData("alexykot.me", "testnet-seed.alexykot.me"));
        //vSeeds.push_back(CDNSSeedData("bitcoin.petertodd.org", "testnet-seed.bitcoin.petertodd.org"));
        //vSeeds.push_back(CDNSSeedData("bluematt.me", "testnet-seed.bluematt.me"));
        //vSeeds.push_back(CDNSSeedData("bitcoin.schildbach.de", "testnet-seed.bitcoin.schildbach.de"));

        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> >();

        vFixedSeeds = std::vector<SeedSpec6>(pnSeed6_test, pnSeed6_test + ARRAYLEN(pnSeed6_test));

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

        checkpointData = (CCheckpointData) {
            boost::assign::map_list_of
            ( 546, uint256S("000000002a936ca763904c3c35fce2f3556c559c0214345d31b1bcebf76acb70")),
            1337966069,
            1488,
            300
        };

    }
};
static CTestNetParams testNetParams;

/**
 * Regression test
 */
class CRegTestParams : public CChainParams {
public:
    CRegTestParams() {
        strNetworkID = "regtest";
        consensus.nSubsidyHalvingInterval = 150;
        consensus.nMajorityEnforceBlockUpgrade = 750;
        consensus.nMajorityRejectBlockOutdated = 950;
        consensus.nMajorityWindow = 1000;
        consensus.powLimit = uint256S("7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff");
        consensus.nPowTargetTimespan = 30 * 60 * 12;//14 * 24 * 60 * 60; // two weeks
        consensus.nPowTargetSpacing = 30;
        consensus.fPowAllowMinDifficultyBlocks = false;
        consensus.fPowNoRetargeting = false;

        pchMessageStart[0] = 0xfb;
        pchMessageStart[1] = 0xbe;
        pchMessageStart[2] = 0xbf;
        pchMessageStart[3] = 0xd9;
        nMaxTipAge = 24 * 60 * 60;
        nDefaultPort = 29246;
        nPruneAfterHeight = 1000;

        genesis = CreateGenesisBlock(1417453734, 0, 0x207fffff, 1, 50 * COIN);
        consensus.hashGenesisBlock = genesis.GetHash();
        //std::cout << "regtest genensis hash: " << genesis.GetHash().GetHex() << std::endl;
        //std::cout << "regtest hashmerkleroot: " << genesis.hashMerkleRoot.GetHex() << std::endl;
        assert(consensus.hashGenesisBlock == uint256S("0x080fcf370abe5a9d14698260e9a20313d35b0fa7ecbc3b0b5ea733f25c359a0b"));
        assert(genesis.hashMerkleRoot == uint256S("0x93621531f4de4b27d4ffdf785ef12855f2b18687e2141466ff50e2848d83f551"));

        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;
        fTestnetToBeDeprecatedFieldRPC = false;

        checkpointData = (CCheckpointData){
            boost::assign::map_list_of
            ( 0, uint256S("0f9188f13cb7b2c71f2a335e3a4fc328bf5beb436012afca590b1a11466e2206")),
            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> >();
    }
};
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);
}