@ravenrebels/ravencoin-jswallet/dist/types.d.ts.map

Ravencoin JavaScript wallet library

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{ getRPC, methods } from \"@ravenrebels/ravencoin-rpc\";\nimport RavencoinKey from \"@ravenrebels/ravencoin-key\";\nimport Signer from \"@ravenrebels/ravencoin-sign-transaction\";\nimport {\n  ChainType,\n  IAddressDelta,\n  IAddressMetaData,\n  IMempoolEntry,\n  IOptions,\n  ISend,\n  ISendManyOptions,\n  ISendResult,\n  IUTXO,\n  SweepResult,\n} from \"./Types\";\n\nimport { sweep } from \"./blockchain/sweep\";\nimport { Transaction } from \"./blockchain/Transaction\";\nimport { SendManyTransaction } from \"./blockchain/SendManyTransaction\";\nimport { getBaseCurrencyByNetwork } from \"./getBaseCurrencyByNetwork\";\nimport { getBalance } from \"./getBalance\";\nimport { ValidationError } from \"./Errors\";\nimport { getAssets } from \"./getAssets\";\n\nexport { Transaction };\nexport { SendManyTransaction };\nconst URL_RAVENCOIN_MAINNET = \"https://rvn-rpc-mainnet.ting.finance/rpc\";\nconst URL_RAVENCOIN_TESTNET = \"https://rvn-rpc-testnet.ting.finance/rpc\";\nconst URL_EVRMORE_MAINNET = \"https://evr-rpc-mainnet.ting.finance/rpc\";\n\n//Avoid singleton (anti-pattern)\n//Meaning multiple instances of the wallet must be able to co-exist\n\nexport class Wallet {\n  rpc = getRPC(\"anonymous\", \"anonymous\", URL_RAVENCOIN_MAINNET);\n  _mnemonic = \"\";\n  network: ChainType = \"rvn\";\n  addressObjects: Array<IAddressMetaData> = [];\n  receiveAddress = \"\";\n  changeAddress = \"\";\n  addressPosition = 0;\n  baseCurrency = \"RVN\"; //Default is RVN but it could be EVR\n  offlineMode = false;\n  setBaseCurrency(currency: string) {\n    this.baseCurrency = currency;\n  }\n  getBaseCurrency() {\n    return this.baseCurrency;\n  }\n  /**\n   * Sweeping a private key means to send all the funds the address holds to your your wallet.\n   * The private key you sweep does not become a part of your wallet.\n   *\n   * NOTE: the address you sweep needs to cointain enough RVN to pay for the transaction\n   *\n   * @param WIF the private key of the address that you want move funds from\n   * @returns either a string, that is the transaction id or null if there were no funds to send\n   */\n  sweep(WIF: string, onlineMode: boolean): Promise<SweepResult> {\n    const wallet = this;\n\n    return sweep(WIF, wallet, onlineMode);\n  }\n  getAddressObjects() {\n    return this.addressObjects;\n  }\n  getAddresses(): Array<string> {\n    const addresses = this.addressObjects.map((obj) => {\n      return obj.address;\n    });\n    return addresses;\n  }\n\n  async init(options: IOptions) {\n    let username = \"anonymous\";\n    let password = \"anonymous\";\n    let url = URL_RAVENCOIN_MAINNET;\n\n    //VALIDATION\n    if (!options) {\n      throw Error(\"option argument is mandatory\");\n    }\n\n    if (options.offlineMode === true) {\n      this.offlineMode = true;\n    }\n    if (!options.mnemonic) {\n      throw Error(\"option.mnemonic is mandatory\");\n    }\n    if (options.network === \"rvn-test\") {\n      url = URL_RAVENCOIN_TESTNET;\n    }\n    if (options.network === \"evr\") {\n      url = URL_EVRMORE_MAINNET;\n    }\n    url = options.rpc_url || url;\n    password = options.rpc_password || password;\n    username = options.rpc_username || username;\n\n    if (options.network) {\n      this.network = options.network;\n      this.setBaseCurrency(getBaseCurrencyByNetwork(options.network));\n    }\n\n    this.rpc = getRPC(username, password, url);\n    this._mnemonic = options.mnemonic;\n\n    //Generating the hd key is slow, so we re-use the object\n    const hdKey = RavencoinKey.getHDKey(this.network, this._mnemonic);\n    const coinType = RavencoinKey.getCoinType(this.network);\n    const ACCOUNT = 0;\n\n    const minAmountOfAddresses = Number.isFinite(options.minAmountOfAddresses)\n      ? options.minAmountOfAddresses\n      : 0;\n\n    let doneDerivingAddresses = false;\n    while (doneDerivingAddresses === false) {\n      //We add new addresses to tempAddresses so we can check history for the last 20\n      const tempAddresses = [] as string[];\n\n      for (let i = 0; i < 20; i++) {\n        const external = RavencoinKey.getAddressByPath(\n          this.network,\n          hdKey,\n          `m/44'/${coinType}'/${ACCOUNT}'/0/${this.addressPosition}`\n        );\n\n        const internal = RavencoinKey.getAddressByPath(\n          this.network,\n          hdKey,\n          `m/44'/${coinType}'/${ACCOUNT}'/1/${this.addressPosition}`\n        );\n\n        this.addressObjects.push(external);\n        this.addressObjects.push(internal);\n        this.addressPosition++;\n\n        tempAddresses.push(external.address + \"\");\n        tempAddresses.push(internal.address + \"\");\n      }\n\n      if (\n        minAmountOfAddresses &&\n        minAmountOfAddresses >= this.addressPosition\n      ) {\n        //In case we intend to create extra addresses on startup\n        doneDerivingAddresses = false;\n      } else if (this.offlineMode === true) {\n        //BREAK generation of addresses and do NOT check history on the network\n        doneDerivingAddresses = true;\n      } else {\n        //If no history, break\n        doneDerivingAddresses =\n          false === (await this.hasHistory(tempAddresses));\n      }\n    }\n  }\n  async hasHistory(addresses: Array<string>): Promise<boolean> {\n    const includeAssets = true;\n    const obj = {\n      addresses,\n    };\n\n    const asdf = (await this.rpc(methods.getaddressbalance, [\n      obj,\n      includeAssets,\n    ])) as any;\n\n    //@ts-ignore\n    const hasReceived = Object.values(asdf).find((asset) => asset.received > 0);\n\n    return !!hasReceived;\n  }\n\n  async _getFirstUnusedAddress(external: boolean) {\n    //First, check if lastReceivedAddress\n    if (external === true && this.receiveAddress) {\n      const asdf = await this.hasHistory([this.receiveAddress]);\n      if (asdf === false) {\n        return this.receiveAddress;\n      }\n    }\n    if (external === false && this.changeAddress) {\n      const asdf = await this.hasHistory([this.changeAddress]);\n      if (asdf === false) {\n        return this.changeAddress;\n      }\n    }\n\n    //First make a list of relevant addresses, either external (even) or change (odd)\n    const addresses: string[] = [];\n\n    this.getAddresses().map(function (address: string, index: number) {\n      if (external === true && index % 2 === 0) {\n        addresses.push(address);\n      } else if (external === false && index % 2 !== 0) {\n        addresses.push(address);\n      }\n    });\n\n    //Use BINARY SEARCH\n\n    // Binary search implementation to find the first item with `history` set to false\n    const binarySearch = async (_addresses: string[]) => {\n      let low = 0;\n      let high = _addresses.length - 1;\n      let result = \"\";\n\n      while (low <= high) {\n        const mid = Math.floor((low + high) / 2);\n        const addy = _addresses[mid];\n\n        const hasHistory = await this.hasHistory([addy]);\n        if (hasHistory === false) {\n          result = addy;\n          high = mid - 1; // Continue searching towards the left\n        } else {\n          low = mid + 1; // Continue searching towards the right\n        }\n      }\n\n      return result;\n    };\n\n    const result = await binarySearch(addresses);\n\n    if (!result) {\n      //IF we have not found one, return the first address\n      return addresses[0];\n    }\n    if (external === true) {\n      this.receiveAddress = result;\n    } else {\n      this.changeAddress = result;\n    }\n\n    return result;\n  }\n\n  async getHistory(): Promise<IAddressDelta[]> {\n    const assetName = \"\"; //Must be empty string, NOT \"*\"\n    const addresses = this.getAddresses();\n    const deltas = this.rpc(methods.getaddressdeltas, [\n      { addresses, assetName },\n    ]);\n    //@ts-ignore\n    const addressDeltas: IAddressDelta[] = deltas as IAddressDelta[];\n    return addressDeltas;\n  }\n  async getMempool(): Promise<IMempoolEntry[]> {\n    const method = methods.getaddressmempool;\n    const includeAssets = true;\n    const params = [{ addresses: this.getAddresses() }, includeAssets];\n    return this.rpc(method, params) as Promise<IMempoolEntry[]>;\n  }\n  async getReceiveAddress() {\n    const isExternal = true;\n    return this._getFirstUnusedAddress(isExternal);\n  }\n\n  async getChangeAddress() {\n    const isExternal = false;\n    return this._getFirstUnusedAddress(isExternal);\n  }\n  /**\n   *\n   * @param assetName if present, only return UTXOs for that asset, otherwise for all assets\n   * @returns UTXOs for assets\n   */\n  async getAssetUTXOs(assetName?: string): Promise<IUTXO[]> {\n    //If no asset name, set to wildcard, meaning all assets\n    const _assetName = !assetName ? \"*\" : assetName;\n    const chainInfo = false;\n    const params = [\n      { addresses: this.getAddresses(), chainInfo, assetName: _assetName },\n    ];\n\n    return this.rpc(methods.getaddressutxos, params);\n  }\n  async getUTXOs() {\n    return this.rpc(methods.getaddressutxos, [\n      { addresses: this.getAddresses() },\n    ]);\n  }\n\n  getPrivateKeyByAddress(address: string) {\n    const f = this.addressObjects.find((a) => a.address === address);\n\n    if (!f) {\n      return undefined;\n    }\n    return f.WIF;\n  }\n  async sendRawTransaction(raw: string): Promise<string> {\n    return this.rpc(\"sendrawtransaction\", [raw]);\n  }\n\n  async send(options: ISend): Promise<ISendResult> {\n    //ACTUAL SENDING TRANSACTION\n\n    //Important, do not swallow the exceptions/errors of createTransaction, let them fly\n    const sendResult: ISendResult = await this.createTransaction(options);\n\n    const id = await this.rpc(\"sendrawtransaction\", [\n      sendResult.debug.signedTransaction,\n    ]);\n    sendResult.transactionId = id;\n\n    return sendResult;\n  }\n\n  async sendMany({ outputs, assetName }: ISendManyOptions) {\n    const options = {\n      wallet: this,\n      outputs,\n      assetName,\n    };\n    const sendResult: ISendResult = await this.createSendManyTransaction(\n      options\n    );\n\n    //ACTUAL SENDING TRANSACTION\n    //Important, do not swallow the exceptions/errors of createSendManyTransaction, let them fly\n\n    try {\n      const id = await this.rpc(\"sendrawtransaction\", [\n        sendResult.debug.signedTransaction,\n      ]);\n      sendResult.transactionId = id;\n\n      return sendResult;\n    } catch (e) {\n      throw new Error(\n        \"Error while sending, perhaps you have pending transaction? Please try again.\"\n      );\n    }\n  }\n  /**\n   * Does all the heavy lifting regarding creating a SendManyTransaction\n   * but it does not broadcast the actual transaction.\n   * Perhaps the user wants to accept the transaction fee?\n   * @param options\n   * @returns An transaction that has not been broadcasted\n   */\n  async createTransaction(options: ISend): Promise<ISendResult> {\n    const { amount, toAddress } = options;\n    let { assetName } = options;\n\n    if (!assetName) {\n      assetName = this.baseCurrency;\n    }\n\n    //Validation\n    if (!toAddress) {\n      throw Error(\"Wallet.send toAddress is mandatory\");\n    }\n    if (!amount) {\n      throw Error(\"Wallet.send amount is mandatory\");\n    }\n    const changeAddress = await this.getChangeAddress();\n\n    if (changeAddress === toAddress) {\n      throw new Error(\"Change address cannot be the same as toAddress\");\n    }\n    const transaction = new Transaction({\n      assetName,\n      amount,\n      toAddress,\n      wallet: this,\n      /* optional */\n      forcedChangeAddressAssets: options.forcedChangeAddressAssets,\n      forcedUTXOs: options.forcedUTXOs,\n      forcedChangeAddressBaseCurrency: options.forcedChangeAddressBaseCurrency,\n    });\n\n    await transaction.loadData();\n\n    const inputs = transaction.getInputs();\n    const outputs = await transaction.getOutputs();\n\n    const privateKeys = transaction.getPrivateKeys();\n\n    const raw = await this.rpc(\"createrawtransaction\", [inputs, outputs]);\n    const signed = Signer.sign(\n      this.network,\n      raw,\n      transaction.getUTXOs(),\n      privateKeys\n    );\n\n    try {\n      //   const id = await this.rpc(\"sendrawtransaction\", [signed]);\n      const sendResult: ISendResult = {\n        transactionId: null,\n        debug: {\n          amount,\n          assetName,\n          fee: transaction.getFee(),\n          inputs,\n          outputs,\n          privateKeys,\n          rawUnsignedTransaction: raw,\n          rvnChangeAmount: transaction.getBaseCurrencyChange(),\n          rvnAmount: transaction.getBaseCurrencyAmount(),\n          signedTransaction: signed,\n          UTXOs: transaction.getUTXOs(),\n          walletMempool: transaction.getWalletMempool(),\n        },\n      };\n      return sendResult;\n    } catch (e) {\n      throw new Error(\n        \"Error while sending, perhaps you have pending transaction? Please try again.\"\n      );\n    }\n  }\n\n  /**\n   * Does all the heavy lifting regarding creating a transaction\n   * but it does not broadcast the actual transaction.\n   * Perhaps the user wants to accept the transaction fee?\n   * @param options\n   * @returns An transaction that has not been broadcasted\n   */\n  async createSendManyTransaction(options: {\n    assetName?: string;\n    outputs: { [key: string]: number };\n  }): Promise<ISendResult> {\n    let { assetName } = options;\n\n    if (!assetName) {\n      assetName = this.baseCurrency;\n    }\n\n    //Validation\n    if (!options.outputs) {\n      throw Error(\"Wallet.createSendManyTransaction outputs is mandatory\");\n    } else if (Object.keys(options.outputs).length === 0) {\n      throw new ValidationError(\n        \"outputs is mandatory, shoud be an object with address as keys and amounts (numbers) as values\"\n      );\n    }\n    const changeAddress = await this.getChangeAddress();\n\n    const toAddresses = Object.keys(options.outputs);\n    if (toAddresses.includes(changeAddress)) {\n      throw new Error(\"You cannot send to your current change address\");\n    }\n    const transaction = new SendManyTransaction({\n      assetName,\n      outputs: options.outputs,\n      wallet: this,\n    });\n\n    await transaction.loadData();\n\n    const inputs = transaction.getInputs();\n    const outputs = await transaction.getOutputs();\n\n    const privateKeys = transaction.getPrivateKeys();\n\n    const raw = await this.rpc(\"createrawtransaction\", [inputs, outputs]);\n    const signed = Signer.sign(\n      this.network,\n      raw,\n      transaction.getUTXOs(),\n      privateKeys\n    );\n\n    try {\n      const sendResult: ISendResult = {\n        transactionId: null,\n        debug: {\n          amount: transaction.getAmount(),\n          assetName,\n          fee: transaction.getFee(),\n          inputs,\n          outputs,\n          privateKeys,\n          rawUnsignedTransaction: raw,\n          rvnChangeAmount: transaction.getBaseCurrencyChange(),\n          rvnAmount: transaction.getBaseCurrencyAmount(),\n          signedTransaction: signed,\n          UTXOs: transaction.getUTXOs(),\n          walletMempool: transaction.getWalletMempool(),\n        },\n      };\n      return sendResult;\n    } catch (e) {\n      throw new Error(\n        \"Error while sending, perhaps you have pending transaction? Please try again.\"\n      );\n    }\n  }\n\n  /**\n   * This method checks if an UTXO is being spent in the mempool.\n   * rpc getaddressutxos will list available UTXOs on the chain.\n   * BUT an UTXO can be being spent by a transaction in mempool.\n   *\n   * @param utxo\n   * @returns boolean true if utxo is being spent in mempool, false if not\n   */\n  async isSpentInMempool(utxo: IUTXO) {\n    const details = await this.rpc(\"gettxout\", [utxo.txid, utxo.outputIndex]);\n    return details === null;\n  }\n  async getAssets() {\n    return getAssets(this, this.getAddresses());\n  }\n  async getBalance() {\n    const a = this.getAddresses();\n    return getBalance(this, a);\n  }\n  async convertMempoolEntryToUTXO(mempoolEntry: IMempoolEntry): Promise<IUTXO> {\n    //Mempool items might not have the script attbribute, we need it\n    const out = await this.rpc(\"gettxout\", [\n      mempoolEntry.txid,\n      mempoolEntry.index,\n      true,\n    ]);\n\n    const utxo = {\n      ...mempoolEntry,\n      script: out.scriptPubKey.hex,\n      outputIndex: mempoolEntry.index,\n      value: mempoolEntry.satoshis / 1e8,\n    };\n    return utxo;\n  }\n\n  /**\n   * Get list of spendable UTXOs in mempool.\n   * Note: a UTXO in mempool can already be \"being spent\"\n   * @param mempool (optional)\n   * @returns list of UTXOs in mempool ready to spend\n   */\n  async getUTXOsInMempool(mempool?: IMempoolEntry[]) {\n    //If no mempool argument, fetch mempool\n    let _mempool = mempool;\n    if (!_mempool) {\n      const m = await this.getMempool();\n      _mempool = m;\n    }\n    const mySet = new Set();\n    for (let item of _mempool) {\n      if (!item.prevtxid) {\n        continue;\n      }\n      const value = item.prevtxid + \"_\" + item.prevout;\n      mySet.add(value);\n    }\n\n    const spendable = _mempool.filter((item) => {\n      if (item.satoshis < 0) {\n        return false;\n      }\n      const value = item.txid + \"_\" + item.index;\n      return mySet.has(value) === false;\n    });\n\n    const utxos: IUTXO[] = [];\n\n    for (let s of spendable) {\n      const u = await this.convertMempoolEntryToUTXO(s);\n      utxos.push(u);\n    }\n    return utxos;\n  }\n}\n\nexport default {\n  createInstance,\n  getBaseCurrencyByNetwork,\n};\nexport async function createInstance(options: IOptions): Promise<Wallet> {\n  const wallet = new Wallet();\n  await wallet.init(options);\n  return wallet;\n}\n"],"names":[],"version":3,"file":"types.d.ts.map"}