blocktrail /
blocktrail-sdk-php
Complex classes like Wallet often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes. You can also have a look at the cohesion graph to spot any un-connected, or weakly-connected components.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use Wallet, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 28 | abstract class Wallet implements WalletInterface { |
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| 29 | |||
| 30 | const WALLET_VERSION_V1 = 'v1'; |
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| 31 | const WALLET_VERSION_V2 = 'v2'; |
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| 32 | const WALLET_VERSION_V3 = 'v3'; |
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| 33 | |||
| 34 | const CHAIN_BTC_DEFAULT = 0; |
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| 35 | const CHAIN_BCC_DEFAULT = 1; |
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| 36 | const CHAIN_BTC_SEGWIT = 2; |
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| 37 | |||
| 38 | const BASE_FEE = 10000; |
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| 39 | |||
| 40 | /** |
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| 41 | * development / debug setting |
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| 42 | * when getting a new derivation from the API, |
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| 43 | * will verify address / redeeemScript with the values the API provides |
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| 44 | */ |
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| 45 | const VERIFY_NEW_DERIVATION = true; |
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| 46 | |||
| 47 | /** |
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| 48 | * @var BlocktrailSDKInterface |
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| 49 | */ |
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| 50 | protected $sdk; |
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| 51 | |||
| 52 | /** |
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| 53 | * @var string |
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| 54 | */ |
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| 55 | protected $identifier; |
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| 56 | |||
| 57 | /** |
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| 58 | * BIP32 master primary private key (m/) |
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| 59 | * |
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| 60 | * @var BIP32Key |
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| 61 | */ |
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| 62 | protected $primaryPrivateKey; |
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| 63 | |||
| 64 | /** |
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| 65 | * @var BIP32Key[] |
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| 66 | */ |
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| 67 | protected $primaryPublicKeys; |
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| 68 | |||
| 69 | /** |
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| 70 | * BIP32 master backup public key (M/) |
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| 71 | |||
| 72 | * @var BIP32Key |
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| 73 | */ |
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| 74 | protected $backupPublicKey; |
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| 75 | |||
| 76 | /** |
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| 77 | * map of blocktrail BIP32 public keys |
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| 78 | * keyed by key index |
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| 79 | * path should be `M / key_index'` |
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| 80 | * |
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| 81 | * @var BIP32Key[] |
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| 82 | */ |
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| 83 | protected $blocktrailPublicKeys; |
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| 84 | |||
| 85 | /** |
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| 86 | * the 'Blocktrail Key Index' that is used for new addresses |
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| 87 | * |
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| 88 | * @var int |
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| 89 | */ |
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| 90 | protected $keyIndex; |
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| 91 | |||
| 92 | /** |
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| 93 | * 'bitcoin' |
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| 94 | * |
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| 95 | * @var string |
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| 96 | */ |
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| 97 | protected $network; |
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| 98 | |||
| 99 | /** |
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| 100 | * testnet yes / no |
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| 101 | * |
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| 102 | * @var bool |
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| 103 | */ |
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| 104 | protected $testnet; |
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| 105 | |||
| 106 | /** |
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| 107 | * cache of public keys, by path |
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| 108 | * |
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| 109 | * @var BIP32Key[] |
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| 110 | */ |
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| 111 | protected $pubKeys = []; |
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| 112 | |||
| 113 | /** |
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| 114 | * cache of address / redeemScript, by path |
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| 115 | * |
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| 116 | * @var string[][] [[address, redeemScript)], ] |
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| 117 | */ |
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| 118 | protected $derivations = []; |
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| 119 | |||
| 120 | /** |
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| 121 | * reverse cache of paths by address |
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| 122 | * |
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| 123 | * @var string[] |
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| 124 | */ |
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| 125 | protected $derivationsByAddress = []; |
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| 126 | |||
| 127 | /** |
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| 128 | * @var WalletPath |
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| 129 | * @deprecated |
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| 130 | */ |
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| 131 | protected $walletPath; |
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| 132 | |||
| 133 | protected $checksum; |
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| 134 | |||
| 135 | protected $locked = true; |
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| 136 | protected $isSegwit = false; |
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| 137 | protected $chainIndex = false; |
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| 138 | protected $changeIndex = false; |
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| 139 | |||
| 140 | protected $optimalFeePerKB; |
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| 141 | protected $lowPriorityFeePerKB; |
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| 142 | protected $feePerKBAge; |
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| 143 | protected $allowedSignModes = [SignInfo::MODE_DONTSIGN, SignInfo::MODE_SIGN]; |
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| 144 | |||
| 145 | /** |
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| 146 | * @param BlocktrailSDKInterface $sdk SDK instance used to do requests |
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| 147 | * @param string $identifier identifier of the wallet |
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| 148 | * @param BIP32Key[] $primaryPublicKeys |
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| 149 | * @param BIP32Key $backupPublicKey should be BIP32 master public key M/ |
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| 150 | * @param BIP32Key[] $blocktrailPublicKeys |
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| 151 | * @param int $keyIndex |
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| 152 | * @param string $network |
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| 153 | * @param bool $testnet |
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| 154 | * @param bool $segwit |
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| 155 | * @param string $checksum |
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| 156 | * @throws BlocktrailSDKException |
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| 157 | */ |
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| 158 | 21 | public function __construct(BlocktrailSDKInterface $sdk, $identifier, array $primaryPublicKeys, $backupPublicKey, array $blocktrailPublicKeys, $keyIndex, $network, $testnet, $segwit, $checksum) { |
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| 192 | |||
| 193 | /** |
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| 194 | * @param null $chainIndex |
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| 195 | * @return BIP32Path |
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| 196 | */ |
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| 197 | 21 | protected function getWalletPath($chainIndex = null) { |
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| 204 | |||
| 205 | /** |
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| 206 | * @return bool |
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| 207 | */ |
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| 208 | 3 | public function isSegwit() { |
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| 211 | |||
| 212 | /** |
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| 213 | * return the wallet identifier |
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| 214 | * |
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| 215 | * @return string |
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| 216 | */ |
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| 217 | 10 | public function getIdentifier() { |
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| 220 | |||
| 221 | /** |
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| 222 | * Returns the wallets backup public key |
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| 223 | * |
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| 224 | * @return [xpub, path] |
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| 225 | */ |
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| 226 | 1 | public function getBackupKey() { |
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| 229 | |||
| 230 | /** |
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| 231 | * return list of Blocktrail co-sign extended public keys |
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| 232 | * |
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| 233 | * @return array[] [ [xpub, path] ] |
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| 234 | */ |
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| 235 | 5 | public function getBlocktrailPublicKeys() { |
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| 240 | |||
| 241 | /** |
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| 242 | * check if wallet is locked |
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| 243 | * |
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| 244 | * @return bool |
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| 245 | */ |
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| 246 | 10 | public function isLocked() { |
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| 249 | |||
| 250 | /** |
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| 251 | * upgrade wallet to different blocktrail cosign key |
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| 252 | * |
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| 253 | * @param $keyIndex |
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| 254 | * @return bool |
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| 255 | * @throws \Exception |
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| 256 | */ |
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| 257 | 5 | public function upgradeKeyIndex($keyIndex) { |
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| 287 | |||
| 288 | /** |
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| 289 | * get a new BIP32 derivation for the next (unused) address |
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| 290 | * by requesting it from the API |
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| 291 | * |
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| 292 | * @return string |
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| 293 | * @param int|null $chainIndex |
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| 294 | * @throws \Exception |
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| 295 | */ |
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| 296 | 14 | protected function getNewDerivation($chainIndex = null) { |
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| 328 | |||
| 329 | /** |
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| 330 | * @param string|BIP32Path $path |
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| 331 | * @return BIP32Key|false |
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| 332 | * @throws \Exception |
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| 333 | * |
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| 334 | * @TODO: hmm? |
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| 335 | */ |
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| 336 | 16 | protected function getParentPublicKey($path) { |
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| 353 | |||
| 354 | /** |
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| 355 | * get address for the specified path |
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| 356 | * |
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| 357 | * @param string|BIP32Path $path |
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| 358 | * @return string |
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| 359 | */ |
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| 360 | 14 | public function getAddressByPath($path) { |
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| 371 | |||
| 372 | /** |
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| 373 | * @param string $path |
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| 374 | * @return WalletScript |
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| 375 | */ |
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| 376 | 16 | public function getWalletScriptByPath($path) { |
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| 388 | |||
| 389 | /** |
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| 390 | * get address and redeemScript for specified path |
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| 391 | * |
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| 392 | * @param string $path |
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| 393 | * @return array[string, ScriptInterface, ScriptInterface|null] [address, redeemScript, witnessScript] |
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| 394 | */ |
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| 395 | 15 | public function getRedeemScriptByPath($path) { |
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| 402 | |||
| 403 | /** |
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| 404 | * @param BIP32Key $key |
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| 405 | * @param string|BIP32Path $path |
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| 406 | * @return string |
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| 407 | */ |
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| 408 | protected function getAddressFromKey(BIP32Key $key, $path) { |
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| 411 | |||
| 412 | /** |
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| 413 | * @param BIP32Key $key |
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| 414 | * @param string|BIP32Path $path |
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| 415 | * @return WalletScript |
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| 416 | * @throws \Exception |
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| 417 | */ |
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| 418 | 16 | protected function getWalletScriptFromKey(BIP32Key $key, $path) { |
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| 445 | |||
| 446 | /** |
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| 447 | * get the path (and redeemScript) to specified address |
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| 448 | * |
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| 449 | * @param string $address |
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| 450 | * @return array |
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| 451 | */ |
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| 452 | 1 | public function getPathForAddress($address) { |
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| 455 | |||
| 456 | /** |
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| 457 | * @param string|BIP32Path $path |
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| 458 | * @return BIP32Key |
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| 459 | * @throws \Exception |
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| 460 | */ |
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| 461 | 16 | public function getBlocktrailPublicKey($path) { |
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| 472 | |||
| 473 | /** |
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| 474 | * generate a new derived key and return the new path and address for it |
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| 475 | * |
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| 476 | * @param int|null $chainIndex |
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| 477 | * @return string[] [path, address] |
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| 478 | */ |
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| 479 | 14 | public function getNewAddressPair($chainIndex = null) { |
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| 485 | |||
| 486 | /** |
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| 487 | * generate a new derived private key and return the new address for it |
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| 488 | * |
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| 489 | * @param int|null $chainIndex |
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| 490 | * @return string |
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| 491 | */ |
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| 492 | 10 | public function getNewAddress($chainIndex = null) { |
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| 495 | |||
| 496 | /** |
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| 497 | * get the balance for the wallet |
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| 498 | * |
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| 499 | * @return int[] [confirmed, unconfirmed] |
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| 500 | */ |
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| 501 | 9 | public function getBalance() { |
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| 506 | |||
| 507 | /** |
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| 508 | * do wallet discovery (slow) |
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| 509 | * |
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| 510 | * @param int $gap the gap setting to use for discovery |
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| 511 | * @return int[] [confirmed, unconfirmed] |
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| 512 | */ |
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| 513 | 2 | public function doDiscovery($gap = 200) { |
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| 518 | |||
| 519 | /** |
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| 520 | * create, sign and send a transaction |
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| 521 | * |
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| 522 | * @param array $outputs [address => value, ] or [[address, value], ] or [['address' => address, 'value' => value], ] coins to send |
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| 523 | * value should be INT |
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| 524 | * @param string $changeAddress change address to use (autogenerated if NULL) |
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| 525 | * @param bool $allowZeroConf |
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| 526 | * @param bool $randomizeChangeIdx randomize the location of the change (for increased privacy / anonimity) |
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| 527 | * @param string $feeStrategy |
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| 528 | * @param null|int $forceFee set a fixed fee instead of automatically calculating the correct fee, not recommended! |
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| 529 | * @return string the txid / transaction hash |
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| 530 | * @throws \Exception |
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| 531 | */ |
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| 532 | 9 | public function pay(array $outputs, $changeAddress = null, $allowZeroConf = false, $randomizeChangeIdx = true, $feeStrategy = self::FEE_STRATEGY_OPTIMAL, $forceFee = null) { |
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| 554 | |||
| 555 | /** |
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| 556 | * determine max spendable from wallet after fees |
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| 557 | * |
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| 558 | * @param bool $allowZeroConf |
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| 559 | * @param string $feeStrategy |
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| 560 | * @param null|int $forceFee set a fixed fee instead of automatically calculating the correct fee, not recommended! |
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| 561 | * @param int $outputCnt |
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| 562 | * @return string |
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| 563 | * @throws BlocktrailSDKException |
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| 564 | */ |
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| 565 | public function getMaxSpendable($allowZeroConf = false, $feeStrategy = self::FEE_STRATEGY_OPTIMAL, $forceFee = null, $outputCnt = 1) { |
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| 568 | |||
| 569 | /** |
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| 570 | * parse outputs into normalized struct |
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| 571 | * |
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| 572 | * @param array $outputs [address => value, ] or [[address, value], ] or [['address' => address, 'value' => value], ] |
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| 573 | * @return array [['address' => address, 'value' => value], ] |
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| 574 | */ |
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| 575 | 10 | public static function normalizeOutputsStruct(array $outputs) { |
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| 603 | |||
| 604 | /** |
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| 605 | * 'fund' the txBuilder with UTXOs (modified in place) |
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| 606 | * |
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| 607 | * @param TransactionBuilder $txBuilder |
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| 608 | * @param bool|true $lockUTXOs |
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| 609 | * @param bool|false $allowZeroConf |
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| 610 | * @param null|int $forceFee |
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| 611 | * @return TransactionBuilder |
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| 612 | */ |
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| 613 | 11 | public function coinSelectionForTxBuilder(TransactionBuilder $txBuilder, $lockUTXOs = true, $allowZeroConf = false, $forceFee = null) { |
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| 641 | |||
| 642 | /** |
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| 643 | * build inputs and outputs lists for TransactionBuilder |
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| 644 | * |
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| 645 | * @param TransactionBuilder $txBuilder |
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| 646 | * @return [TransactionInterface, SignInfo[]] |
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| 647 | * @throws \Exception |
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| 648 | */ |
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| 649 | 7 | public function buildTx(TransactionBuilder $txBuilder) { |
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| 737 | |||
| 738 | 7 | public function determineFeeAndChange(TransactionBuilder $txBuilder, $optimalFeePerKB, $lowPriorityFeePerKB) { |
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| 794 | |||
| 795 | /** |
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| 796 | * create, sign and send transction based on TransactionBuilder |
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| 797 | * |
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| 798 | * @param TransactionBuilder $txBuilder |
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| 799 | * @param bool $apiCheckFee let the API check if the fee is correct |
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| 800 | * @return string |
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| 801 | * @throws \Exception |
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| 802 | */ |
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| 803 | 4 | public function sendTx(TransactionBuilder $txBuilder, $apiCheckFee = true) { |
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| 808 | |||
| 809 | /** |
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| 810 | * !! INTERNAL METHOD, public for testing purposes !! |
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| 811 | * create, sign and send transction based on inputs and outputs |
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| 812 | * |
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| 813 | * @param Transaction $tx |
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| 814 | * @param SignInfo[] $signInfo |
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| 815 | * @param bool $apiCheckFee let the API check if the fee is correct |
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| 816 | * @return string |
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| 817 | * @throws \Exception |
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| 818 | * @internal |
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| 819 | */ |
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| 820 | 4 | public function _sendTx(Transaction $tx, array $signInfo, $apiCheckFee = true) { |
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| 842 | |||
| 843 | /** |
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| 844 | * only supports estimating fee for 2of3 multsig UTXOs and P2PKH/P2SH outputs |
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| 845 | * |
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| 846 | * @todo: mark this as deprecated, insist on the utxo's or qualified scripts. |
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| 847 | * @param int $utxoCnt number of unspent inputs in transaction |
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| 848 | * @param int $outputCnt number of outputs in transaction |
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| 849 | * @return float |
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| 850 | * @access public reminder that people might use this! |
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| 851 | */ |
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| 852 | 1 | public static function estimateFee($utxoCnt, $outputCnt) { |
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| 857 | |||
| 858 | /** |
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| 859 | * @param int $size size in bytes |
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| 860 | * @return int fee in satoshi |
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| 861 | */ |
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| 862 | 5 | public static function baseFeeForSize($size) { |
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| 867 | |||
| 868 | /** |
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| 869 | * @todo: variable varint |
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| 870 | * @param int $txinSize |
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| 871 | * @param int $txoutSize |
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| 872 | * @return float |
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| 873 | */ |
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| 874 | 9 | public static function estimateSize($txinSize, $txoutSize) { |
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| 877 | |||
| 878 | /** |
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| 879 | * only supports estimating size for P2PKH/P2SH outputs |
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| 880 | * |
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| 881 | * @param int $outputCnt number of outputs in transaction |
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| 882 | * @return float |
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| 883 | */ |
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| 884 | 2 | public static function estimateSizeOutputs($outputCnt) { |
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| 887 | |||
| 888 | /** |
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| 889 | * only supports estimating size for 2of3 multsig UTXOs |
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| 890 | * |
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| 891 | * @param int $utxoCnt number of unspent inputs in transaction |
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| 892 | * @return float |
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| 893 | */ |
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| 894 | 3 | public static function estimateSizeUTXOs($utxoCnt) { |
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| 930 | |||
| 931 | /** |
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| 932 | * determine how much fee is required based on the inputs and outputs |
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| 933 | * this is an estimation, not a proper 100% correct calculation |
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| 934 | * |
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| 935 | * @param UTXO[] $utxos |
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| 936 | * @param array[] $outputs |
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| 937 | * @param $feeStrategy |
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| 938 | * @param $optimalFeePerKB |
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| 939 | * @param $lowPriorityFeePerKB |
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| 940 | * @return int |
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| 941 | * @throws BlocktrailSDKException |
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| 942 | */ |
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| 943 | 7 | protected function determineFee($utxos, $outputs, $feeStrategy, $optimalFeePerKB, $lowPriorityFeePerKB) { |
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| 961 | |||
| 962 | /** |
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| 963 | * determine how much change is left over based on the inputs and outputs and the fee |
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| 964 | * |
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| 965 | * @param UTXO[] $utxos |
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| 966 | * @param array[] $outputs |
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| 967 | * @param int $fee |
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| 968 | * @return int |
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| 969 | */ |
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| 970 | 7 | protected function determineChange($utxos, $outputs, $fee) { |
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| 978 | |||
| 979 | /** |
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| 980 | * sign a raw transaction with the private keys that we have |
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| 981 | * |
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| 982 | * @param Transaction $tx |
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| 983 | * @param SignInfo[] $signInfo |
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| 984 | * @return TransactionInterface |
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| 985 | * @throws \Exception |
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| 986 | */ |
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| 987 | 4 | protected function signTransaction(Transaction $tx, array $signInfo) { |
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| 1019 | |||
| 1020 | /** |
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| 1021 | * send the transaction using the API |
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| 1022 | * |
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| 1023 | * @param string|array $signed |
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| 1024 | * @param string[] $paths |
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| 1025 | * @param bool $checkFee |
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| 1026 | * @return string the complete raw transaction |
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| 1027 | * @throws \Exception |
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| 1028 | */ |
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| 1029 | 4 | protected function sendTransaction($signed, $paths, $checkFee = false) { |
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| 1032 | |||
| 1033 | /** |
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| 1034 | * @param \array[] $outputs |
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| 1035 | * @param bool $lockUTXO |
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| 1036 | * @param bool $allowZeroConf |
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| 1037 | * @param int|null|string $feeStrategy |
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| 1038 | * @param null $forceFee |
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| 1039 | * @return array |
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| 1040 | */ |
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| 1041 | 11 | public function coinSelection($outputs, $lockUTXO = true, $allowZeroConf = false, $feeStrategy = self::FEE_STRATEGY_OPTIMAL, $forceFee = null) { |
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| 1050 | |||
| 1051 | 7 | public function getOptimalFeePerKB() { |
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| 1058 | |||
| 1059 | 7 | public function getLowPriorityFeePerKB() { |
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| 1066 | |||
| 1067 | 3 | public function updateFeePerKB() { |
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| 1075 | |||
| 1076 | /** |
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| 1077 | * delete the wallet |
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| 1078 | * |
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| 1079 | * @param bool $force ignore warnings (such as non-zero balance) |
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| 1080 | * @return mixed |
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| 1081 | * @throws \Exception |
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| 1082 | */ |
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| 1083 | 10 | public function deleteWallet($force = false) { |
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| 1091 | |||
| 1092 | /** |
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| 1093 | * create checksum to verify ownership of the master primary key |
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| 1094 | * |
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| 1095 | * @return string[] [address, signature] |
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| 1096 | */ |
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| 1097 | 10 | protected function createChecksumVerificationSignature() { |
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| 1108 | |||
| 1109 | /** |
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| 1110 | * setup a webhook for our wallet |
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| 1111 | * |
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| 1112 | * @param string $url URL to receive webhook events |
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| 1113 | * @param string $identifier identifier for the webhook, defaults to WALLET-{$this->identifier} |
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| 1114 | * @return array |
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| 1115 | */ |
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| 1116 | 1 | public function setupWebhook($url, $identifier = null) { |
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| 1120 | |||
| 1121 | /** |
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| 1122 | * @param string $identifier identifier for the webhook, defaults to WALLET-{$this->identifier} |
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| 1123 | * @return mixed |
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| 1124 | */ |
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| 1125 | 1 | public function deleteWebhook($identifier = null) { |
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| 1129 | |||
| 1130 | /** |
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| 1131 | * lock a specific unspent output |
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| 1132 | * |
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| 1133 | * @param $txHash |
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| 1134 | * @param $txIdx |
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| 1135 | * @param int $ttl |
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| 1136 | * @return bool |
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| 1137 | */ |
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| 1138 | public function lockUTXO($txHash, $txIdx, $ttl = 3) { |
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| 1141 | |||
| 1142 | /** |
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| 1143 | * unlock a specific unspent output |
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| 1144 | * |
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| 1145 | * @param $txHash |
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| 1146 | * @param $txIdx |
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| 1147 | * @return bool |
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| 1148 | */ |
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| 1149 | public function unlockUTXO($txHash, $txIdx) { |
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| 1152 | |||
| 1153 | /** |
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| 1154 | * get all transactions for the wallet (paginated) |
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| 1155 | * |
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| 1156 | * @param integer $page pagination: page number |
||
| 1157 | * @param integer $limit pagination: records per page (max 500) |
||
| 1158 | * @param string $sortDir pagination: sort direction (asc|desc) |
||
| 1159 | * @return array associative array containing the response |
||
| 1160 | */ |
||
| 1161 | 1 | public function transactions($page = 1, $limit = 20, $sortDir = 'asc') { |
|
| 1164 | |||
| 1165 | /** |
||
| 1166 | * get all addresses for the wallet (paginated) |
||
| 1167 | * |
||
| 1168 | * @param integer $page pagination: page number |
||
| 1169 | * @param integer $limit pagination: records per page (max 500) |
||
| 1170 | * @param string $sortDir pagination: sort direction (asc|desc) |
||
| 1171 | * @return array associative array containing the response |
||
| 1172 | */ |
||
| 1173 | 1 | public function addresses($page = 1, $limit = 20, $sortDir = 'asc') { |
|
| 1176 | |||
| 1177 | /** |
||
| 1178 | * get all UTXOs for the wallet (paginated) |
||
| 1179 | * |
||
| 1180 | * @param integer $page pagination: page number |
||
| 1181 | * @param integer $limit pagination: records per page (max 500) |
||
| 1182 | * @param string $sortDir pagination: sort direction (asc|desc) |
||
| 1183 | * @param boolean $zeroconf include zero confirmation transactions |
||
| 1184 | * @return array associative array containing the response |
||
| 1185 | */ |
||
| 1186 | 1 | public function utxos($page = 1, $limit = 20, $sortDir = 'asc', $zeroconf = true) { |
|
| 1189 | } |
||
| 1190 |
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This check looks for assignments to scalar types that may be of the wrong type.
To ensure the code behaves as expected, it may be a good idea to add an explicit type cast.