import { Network } from '../model';

/**
 * Constants defining Vechain mainnet chain tag. The chain tag is the last byte of the genesis block ID
 */
const VECHAIN_MAINNET_CHAIN_TAG = 0x4a;

/**
 * Constants defining Vechain testnet chain tag. The chain tag is the last byte of the genesis block ID
 */
const VECHAIN_TESTNET_CHAIN_TAG = 0x27;

/**
 * Constants defining Vechain testnet chain tag. The chain tag is the last byte of the genesis block ID
 */
const VECHAIN_SOLO_CHAIN_TAG = 0xf6;

/**
 * Genesis block for Vechain mainnet
 */
const mainnetGenesisBlock = {
  number: 0,
  id: '0x00000000851caf3cfdb6e899cf5958bfb1ac3413d346d43539627e6be7ec1b4a',
  size: 170,
  parentID: '0xffffffff53616c757465202620526573706563742c20457468657265756d2100',
  timestamp: 1530316800,
  gasLimit: 10000000,
  beneficiary: '0x0000000000000000000000000000000000000000',
  gasUsed: 0,
  totalScore: 0,
  txsRoot: '0x45b0cfc220ceec5b7c1c62c4d4193d38e4eba48e8815729ce75f9c0ab0e4c1c0',
  txsFeatures: 0,
  stateRoot: '0x09bfdf9e24dd5cd5b63f3c1b5d58b97ff02ca0490214a021ed7d99b93867839c',
  receiptsRoot: '0x45b0cfc220ceec5b7c1c62c4d4193d38e4eba48e8815729ce75f9c0ab0e4c1c0',
  signer: '0x0000000000000000000000000000000000000000',
  isTrunk: true,
  transactions: [],
};

/**
 * Genesis block for Vechain testnet
 */
const testnetGenesisBlock = {
  number: 0,
  id: '0x000000000b2bce3c70bc649a02749e8687721b09ed2e15997f466536b20bb127',
  size: 170,
  parentID: '0xffffffff00000000000000000000000000000000000000000000000000000000',
  timestamp: 1530014400,
  gasLimit: 10000000,
  beneficiary: '0x0000000000000000000000000000000000000000',
  gasUsed: 0,
  totalScore: 0,
  txsRoot: '0x45b0cfc220ceec5b7c1c62c4d4193d38e4eba48e8815729ce75f9c0ab0e4c1c0',
  txsFeatures: 0,
  stateRoot: '0x4ec3af0acbad1ae467ad569337d2fe8576fe303928d35b8cdd91de47e9ac84bb',
  receiptsRoot: '0x45b0cfc220ceec5b7c1c62c4d4193d38e4eba48e8815729ce75f9c0ab0e4c1c0',
  signer: '0x0000000000000000000000000000000000000000',
  isTrunk: true,
  transactions: [],
};

/**
 * Genesis block for Vechain solo network
 */
const soloGenesisBlock = {
  number: 0,
  id: '0x00000000c05a20fbca2bf6ae3affba6af4a74b800b585bf7a4988aba7aea69f6',
  size: 170,
  parentID: '0xffffffff00000000000000000000000000000000000000000000000000000000',
  timestamp: 1526400000,
  gasLimit: 10000000,
  beneficiary: '0x0000000000000000000000000000000000000000',
  gasUsed: 0,
  totalScore: 0,
  txsRoot: '0x45b0cfc220ceec5b7c1c62c4d4193d38e4eba48e8815729ce75f9c0ab0e4c1c0',
  txsFeatures: 0,
  stateRoot: '0x93de0ffb1f33bc0af053abc2a87c4af44594f5dcb1cb879dd823686a15d68550',
  receiptsRoot: '0x45b0cfc220ceec5b7c1c62c4d4193d38e4eba48e8815729ce75f9c0ab0e4c1c0',
  signer: '0x0000000000000000000000000000000000000000',
  isTrunk: true,
  transactions: [],
};

/**
 * Constants defining Vechain mainnet information
 */
const MAINNET_NETWORK = {
  genesisBlock: mainnetGenesisBlock,
  chainTag: VECHAIN_MAINNET_CHAIN_TAG,
};

/**
 * Constants defining Vechain testnet information
 */
const TESTNET_NETWORK = {
  genesisBlock: testnetGenesisBlock,
  chainTag: VECHAIN_TESTNET_CHAIN_TAG,
};

/**
 * Constants defining Vechain solo network information
 */
const SOLO_NETWORK = {
  genesisBlock: soloGenesisBlock,
  chainTag: VECHAIN_SOLO_CHAIN_TAG,
};

export const genesisBlock = (network: Network) => {
  switch (network) {
    case Network.solo:
      return SOLO_NETWORK.genesisBlock;
    case Network.testnet:
      return TESTNET_NETWORK.genesisBlock;
    case Network.mainnet:
      return MAINNET_NETWORK.genesisBlock;
    default:
      throw new Error('Invalid network');
  }
};