// 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 "util.h"
#include "utilstrencodings.h"

#include <assert.h>

#include <boost/assign/list_of.hpp>

using namespace std;

#include "chainparamsseeds.h"

/**
 * 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 {
protected:
    Consensus::Params digishieldConsensus;
    Consensus::Params auxpowConsensus;
public:
    CMainParams() {
        strNetworkID = "main";

        // Blocks 0 - 144999 are conventional difficulty calculation
        consensus.nSubsidyHalvingInterval = 100000;
        consensus.nMajorityEnforceBlockUpgrade = 750;
        consensus.nMajorityRejectBlockOutdated = 950;
        consensus.nMajorityWindow = 1000;
        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.fPowAllowDigishieldMinDifficultyBlocks = false;
        consensus.nAuxpowChainId = 0x0062; // 98 - Josh Wise!
        consensus.fStrictChainId = true;
        consensus.fAllowLegacyBlocks = true;
        consensus.nHeightEffective = 0;
        consensus.fDigishieldDifficultyCalculation = false;

        // Blocks 145000 - 371336 are Digishield without AuxPoW
        digishieldConsensus = consensus;
        digishieldConsensus.nHeightEffective = 145000;
        digishieldConsensus.fDigishieldDifficultyCalculation = true;
        digishieldConsensus.nPowTargetTimespan = 60; // post-digishield: 1 minute

        // Blocks 371337+ are AuxPoW
        auxpowConsensus = digishieldConsensus;
        auxpowConsensus.nHeightEffective = 371337;
        auxpowConsensus.fAllowLegacyBlocks = false;

        // Assemble the binary search tree of consensus parameters
        pConsensusRoot = &digishieldConsensus;
        digishieldConsensus.pLeft = &consensus;
        digishieldConsensus.pRight = &auxpowConsensus;

        /** 
         * 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;
        vAlertPubKey = ParseHex("04d4da7a5dae4db797d9b0644d57a5cd50e05a70f36091cd62e2fc41c98ded06340be5a43a35e185690cd9cde5d72da8f6d065b499b06f51dcfba14aad859f443a");
        nDefaultPort = 22556;
        nMinerThreads = 0;
        nPruneAfterHeight = 100000;

        /**
         * 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
         */
        const char* pszTimestamp = "Nintondo";
        CMutableTransaction txNew;
        txNew.vin.resize(1);
        txNew.vout.resize(1);
        txNew.vin[0].scriptSig = CScript() << 486604799 << CScriptNum(4) << vector<unsigned char>((const unsigned char*)pszTimestamp, (const unsigned char*)pszTimestamp + strlen(pszTimestamp));
        txNew.vout[0].nValue = 88 * COIN;
        txNew.vout[0].scriptPubKey = CScript() << ParseHex("040184710fa689ad5023690c80f3a49c8f13f8d45b8c857fbcbc8bc4a8e4d3eb4b10f4d4604fa08dce601aaf0f470216fe1b51850b4acf21b179c45070ac7b03a9") << OP_CHECKSIG;
        genesis.vtx.push_back(txNew);
        genesis.hashPrevBlock.SetNull();
        genesis.hashMerkleRoot = genesis.BuildMerkleTree();
        genesis.nVersion.SetGenesisVersion(1);
        genesis.nTime    = 1386325540;
        genesis.nBits    = 0x1e0ffff0;
        genesis.nNonce   = 99943;

        consensus.hashGenesisBlock = genesis.GetHash();
        digishieldConsensus.hashGenesisBlock = consensus.hashGenesisBlock;
        auxpowConsensus.hashGenesisBlock = consensus.hashGenesisBlock;
        assert(consensus.hashGenesisBlock == uint256S("0x1a91e3dace36e2be3bf030a65679fe821aa1d6ef92e7c9902eb318182c355691"));
        assert(genesis.hashMerkleRoot == uint256S("0x5b2a3f53f605d62c53e62932dac6925e3d74afa5a4b459745c36d42d0ed26a69"));

        vSeeds.push_back(CDNSSeedData("dogecoin.com", "seed.dogecoin.com"));
        vSeeds.push_back(CDNSSeedData("multidoge.org", "seed.multidoge.org"));
        vSeeds.push_back(CDNSSeedData("multidoge.org", "seed2.multidoge.org"));
        vSeeds.push_back(CDNSSeedData("doger.dogecoin.com", "seed.doger.dogecoin.com"));

        base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,30);  // 0x1e
        base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,22);  // 0x16
        base58Prefixes[SECRET_KEY] =     std::vector<unsigned char>(1,158); // 0x9e
        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();

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

        checkpointData = (Checkpoints::CCheckpointData) {
            boost::assign::map_list_of

            (      0, uint256S("0x1a91e3dace36e2be3bf030a65679fe821aa1d6ef92e7c9902eb318182c355691"))
            (  42279, uint256S("0x8444c3ef39a46222e87584ef956ad2c9ef401578bd8b51e8e4b9a86ec3134d3a"))
            (  42400, uint256S("0x557bb7c17ed9e6d4a6f9361cfddf7c1fc0bdc394af7019167442b41f507252b4"))
            ( 104679, uint256S("0x35eb87ae90d44b98898fec8c39577b76cb1eb08e1261cfc10706c8ce9a1d01cf"))
            ( 128370, uint256S("0x3f9265c94cab7dc3bd6a2ad2fb26c8845cb41cff437e0a75ae006997b4974be6"))
            ( 145000, uint256S("0xcc47cae70d7c5c92828d3214a266331dde59087d4a39071fa76ddfff9b7bde72"))
            ( 165393, uint256S("0x7154efb4009e18c1c6a6a79fc6015f48502bcd0a1edd9c20e44cd7cbbe2eeef1"))
            ( 186774, uint256S("0x3c712c49b34a5f34d4b963750d6ba02b73e8a938d2ee415dcda141d89f5cb23a"))
            ( 199992, uint256S("0x3408ff829b7104eebaf61fd2ba2203ef2a43af38b95b353e992ef48f00ebb190"))
            ( 225000, uint256S("0xbe148d9c5eab4a33392a6367198796784479720d06bfdd07bd547fe934eea15a"))
            ( 250000, uint256S("0x0e4bcfe8d970979f7e30e2809ab51908d435677998cf759169407824d4f36460"))
            ( 270639, uint256S("0xc587a36dd4f60725b9dd01d99694799bef111fc584d659f6756ab06d2a90d911"))
            ( 299742, uint256S("0x1cc89c0c8a58046bf0222fe131c099852bd9af25a80e07922918ef5fb39d6742"))
            ( 323141, uint256S("0x60c9f919f9b271add6ef5671e9538bad296d79f7fdc6487ba702bf2ba131d31d"))
            ( 339202, uint256S("0x8c29048df5ae9df38a67ea9470fdd404d281a3a5c6f33080cd5bf14aa496ab03"))
            ( 350000, uint256S("0x2bdcba23a47049e69c4fec4c425462e30f3d21d25223bde0ed36be4ea59a7075"))
            ( 370005, uint256S("0x7be5af2c5bdcb79047dcd691ef613b82d4f1c20835677daed936de37a4782e15"))
            ( 371337, uint256S("0x60323982f9c5ff1b5a954eac9dc1269352835f47c2c5222691d80f0d50dcf053"))
            ( 400002, uint256S("0xa5021d69a83f39aef10f3f24f932068d6ff322c654d20562def3fac5703ce3aa")),

            1412259032, // * UNIX timestamp of last checkpoint block
            12371456,   // * total number of transactions between genesis and last checkpoint
                        //   (the tx=... number in the SetBestChain debug.log lines)
            29000.0     // * estimated number of transactions per day after checkpoint
        };
    }
};
static CMainParams mainParams;

/**
 * Testnet (v3)
 */
class CTestNetParams : public CMainParams {
private:
    Consensus::Params minDifficultyConsensus;
public:
    CTestNetParams() {
        strNetworkID = "test";

        // Blocks 0 - 144999 are pre-Digishield
        consensus.nHeightEffective = 0;
        consensus.nPowTargetTimespan = 4 * 60 * 60; // pre-digishield: 4 hours
        consensus.fDigishieldDifficultyCalculation = false;
        consensus.fPowAllowMinDifficultyBlocks = true;
        consensus.fPowAllowDigishieldMinDifficultyBlocks = false;
        consensus.nMajorityEnforceBlockUpgrade = 51;
        consensus.nMajorityRejectBlockOutdated = 75;
        consensus.nMajorityWindow = 100;
        consensus.fStrictChainId = false;
        consensus.nHeightEffective = 0;
        consensus.fAllowLegacyBlocks = true;

        // Reset links before we copy parameters
        consensus.pLeft = NULL;
        consensus.pRight = NULL;

        // Blocks 145000 - 157499 are Digishield without minimum difficulty on all blocks
        digishieldConsensus = consensus;
        digishieldConsensus.nHeightEffective = 145000;
        digishieldConsensus.nPowTargetTimespan = 60; // post-digishield: 1 minute
        digishieldConsensus.fDigishieldDifficultyCalculation = true;
        digishieldConsensus.fPowAllowMinDifficultyBlocks = false;

        // Blocks 157500 - 158099 are Digishield with minimum difficulty on all blocks
        minDifficultyConsensus = digishieldConsensus;
        minDifficultyConsensus.nHeightEffective = 157500;
        minDifficultyConsensus.fPowAllowDigishieldMinDifficultyBlocks = true;
        minDifficultyConsensus.fPowAllowMinDifficultyBlocks = true;

        // Enable AuxPoW at 158100
        auxpowConsensus = minDifficultyConsensus;
        auxpowConsensus.nHeightEffective = 158100;
        auxpowConsensus.fPowAllowDigishieldMinDifficultyBlocks = true;
        auxpowConsensus.fAllowLegacyBlocks = false;

        // Assemble the binary search tree of parameters
        pConsensusRoot = &digishieldConsensus;
        digishieldConsensus.pLeft = &consensus;
        digishieldConsensus.pRight = &minDifficultyConsensus;
        minDifficultyConsensus.pRight = &auxpowConsensus;

        pchMessageStart[0] = 0xfc;
        pchMessageStart[1] = 0xc1;
        pchMessageStart[2] = 0xb7;
        pchMessageStart[3] = 0xdc;
        vAlertPubKey = ParseHex("042756726da3c7ef515d89212ee1705023d14be389e25fe15611585661b9a20021908b2b80a3c7200a0139dd2b26946606aab0eef9aa7689a6dc2c7eee237fa834");
        nDefaultPort = 44556;
        nMinerThreads = 0;
        nPruneAfterHeight = 1000;

        //! Modify the testnet genesis block so the timestamp is valid for a later start.
        genesis.nTime = 1391503289;
        genesis.nNonce = 997879;
        consensus.hashGenesisBlock = genesis.GetHash();
        digishieldConsensus.hashGenesisBlock = consensus.hashGenesisBlock;
        minDifficultyConsensus.hashGenesisBlock = consensus.hashGenesisBlock;
        auxpowConsensus.hashGenesisBlock = consensus.hashGenesisBlock;
        assert(consensus.hashGenesisBlock == uint256S("0xbb0a78264637406b6360aad926284d544d7049f45189db5664f3c4d07350559e"));

        vFixedSeeds.clear();
        vSeeds.clear();
        vSeeds.push_back(CDNSSeedData("testdoge.lionservers.de", "testdoge-seed.lionservers.de"));
        vSeeds.push_back(CDNSSeedData("lionservers.de", "testdoge-seed-static.lionservers.de"));

        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));

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

        checkpointData = (Checkpoints::CCheckpointData) {
            boost::assign::map_list_of
            ( 0, uint256S("0xbb0a78264637406b6360aad926284d544d7049f45189db5664f3c4d07350559e")),
            1369685559,
            37581,
            300
        };

    }
};
static CTestNetParams testNetParams;

/**
 * Regression test
 */
class CRegTestParams : public CTestNetParams {
public:
    CRegTestParams() {
        strNetworkID = "regtest";
        consensus.nSubsidyHalvingInterval = 150;
        consensus.nMajorityEnforceBlockUpgrade = 750;
        consensus.nMajorityRejectBlockOutdated = 950;
        consensus.nMajorityWindow = 1000;
        consensus.nPowTargetTimespan = 4 * 60 * 60; // pre-digishield: 4 hours
        consensus.powLimit = uint256S("0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"); // ~uint256(0) >> 1;
        consensus.fStrictChainId = true;
        consensus.fAllowLegacyBlocks = false; // Never allow legacy blocks on RegTest

        // Reset links before we copy parameters
        consensus.pLeft = NULL;
        consensus.pRight = NULL;

        digishieldConsensus = consensus;
        digishieldConsensus.nHeightEffective = 10;
        digishieldConsensus.nPowTargetTimespan = 60; // post-digishield: 1 minute
        digishieldConsensus.fDigishieldDifficultyCalculation = true;

        auxpowConsensus = digishieldConsensus;
        auxpowConsensus.nHeightEffective = 20;

        // Assemble the binary search tree of parameters
        digishieldConsensus.pLeft = &consensus;
        digishieldConsensus.pRight = &auxpowConsensus;
        pConsensusRoot = &digishieldConsensus;

        pchMessageStart[0] = 0xfa;
        pchMessageStart[1] = 0xbf;
        pchMessageStart[2] = 0xb5;
        pchMessageStart[3] = 0xda;
        nMinerThreads = 1;
        genesis.nTime = 1296688602;
        genesis.nBits = 0x207fffff;
        genesis.nNonce = 2;
        consensus.hashGenesisBlock = genesis.GetHash();
        digishieldConsensus.hashGenesisBlock = consensus.hashGenesisBlock;
        auxpowConsensus.hashGenesisBlock = consensus.hashGenesisBlock;
        nDefaultPort = 18444;
        assert(consensus.hashGenesisBlock == uint256S("0x3d2160a3b5dc4a9d62e7e66a295f70313ac808440ef7400d6c0772171ce973a5"));
        nPruneAfterHeight = 1000;

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

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

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

static CChainParams *pCurrentParams = 0;

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

CChainParams &Params(CBaseChainParams::Network network) {
    switch (network) {
        case CBaseChainParams::MAIN:
            return mainParams;
        case CBaseChainParams::TESTNET:
            return testNetParams;
        case CBaseChainParams::REGTEST:
            return regTestParams;
        default:
            assert(false && "Unimplemented network");
            return mainParams;
    }
}

void SelectParams(CBaseChainParams::Network network) {
    SelectBaseParams(network);
    pCurrentParams = &Params(network);
}

bool SelectParamsFromCommandLine()
{
    CBaseChainParams::Network network = NetworkIdFromCommandLine();
    if (network == CBaseChainParams::MAX_NETWORK_TYPES)
        return false;

    SelectParams(network);
    return true;
}