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* add faucet command and astar api inst * balance format * refactor api instance * add fund transfers * change token decimal * added callback interaction * fix message block style * add channel id * add description
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,113 @@ | ||
| import { ApiPromise, WsProvider, Keyring } from '@polkadot/api'; | ||
| import type { ISubmittableResult } from '@polkadot/types/types'; | ||
| import { appConfig } from '../config'; | ||
| import { formatBalance } from '@polkadot/util'; | ||
| import { evmToAddress } from '@polkadot/util-crypto'; | ||
| import type { KeyringPair } from '@polkadot/keyring/types'; | ||
| import BN from 'bn.js'; | ||
| import { checkAddressType } from '../helpers'; | ||
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| export type NetworkName = 'dusty' | 'shibuya'; | ||
| export interface FaucetOption { | ||
| faucetAccountSeed: string; | ||
| dripAmount: BN; | ||
| } | ||
|
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| // ss58 address prefix | ||
| export const ASTAR_SS58_FORMAT = 5; | ||
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| export const ASTAR_TOKEN_DECIMALS = 18; | ||
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| export class AstarFaucetApi { | ||
| private _keyring: Keyring; | ||
| private _faucetAccount: KeyringPair; | ||
| private _api: ApiPromise; | ||
| // token amount to send from the faucet per request | ||
| private _dripAmount: BN; | ||
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| public get faucetAccount() { | ||
| return this._faucetAccount; | ||
| } | ||
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| public get api() { | ||
| return this._api; | ||
| } | ||
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| constructor(options: FaucetOption) { | ||
| this._keyring = new Keyring({ type: 'sr25519', ss58Format: ASTAR_SS58_FORMAT }); | ||
| this._faucetAccount = this._keyring.addFromUri(options.faucetAccountSeed, { name: 'Astar Faucet' }); | ||
| this._dripAmount = options.dripAmount; | ||
| //this._api = new ApiPromise(); | ||
| } | ||
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| public async connectTo(networkName: NetworkName) { | ||
| // get chain endpoint and types from the config file | ||
| const endpoint = appConfig.network[networkName].endpoint; | ||
| const chainMetaTypes = appConfig.network[networkName].types; | ||
|
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| // establish node connection with the endpoint | ||
| const provider = new WsProvider(endpoint); | ||
| const api = new ApiPromise({ | ||
| provider, | ||
| types: chainMetaTypes, | ||
| }); | ||
|
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| const apiInst = await api.isReady; | ||
|
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| // get chain metadata | ||
| const { tokenSymbol } = await apiInst.rpc.system.properties(); | ||
| const unit = tokenSymbol.unwrap()[0].toString(); | ||
|
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| // set token display format | ||
| formatBalance.setDefaults({ | ||
| unit, | ||
| decimals: ASTAR_TOKEN_DECIMALS, // we can get this directly from the chain too | ||
| }); | ||
|
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| // subscribe to account balance changes | ||
| // await apiInst.query.system.account(this._faucetAccount.address, ({ data }) => { | ||
| // const faucetReserve = formatBalance(data.free.toBn(), { | ||
| // withSi: true, | ||
| // withUnit: true, | ||
| // }); | ||
| // console.log(`Faucet has ${faucetReserve}`); | ||
| // }); | ||
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| this._api = apiInst; | ||
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| return apiInst; | ||
| } | ||
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| public async getFaucetBalance() { | ||
| const addr = this._faucetAccount.address; | ||
|
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| const { data } = await this._api.query.system.account(addr); | ||
|
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| const faucetReserve = this.formatBalance(data.free.toBn()); | ||
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| return faucetReserve; | ||
| } | ||
|
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| public formatBalance(input: string | number | BN) { | ||
| return formatBalance(input, { | ||
| withSi: true, | ||
| withUnit: true, | ||
| }); | ||
| } | ||
|
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| public async sendTokenTo(to: string, statusCb: (result: ISubmittableResult) => Promise<void>) { | ||
| // send 30 testnet tokens per call | ||
| //const faucetAmount = new BN(30).mul(new BN(10).pow(new BN(18))); | ||
|
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| let destinationAccount = to; | ||
| const addrType = checkAddressType(to); | ||
|
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| // convert the h160 (evm) account to ss58 before sending the tokens | ||
| if (addrType === 'H160') { | ||
| destinationAccount = evmToAddress(to, ASTAR_SS58_FORMAT); | ||
| } | ||
| return await this._api.tx.balances | ||
| .transfer(destinationAccount, this._dripAmount) | ||
| .signAndSend(this._faucetAccount, statusCb); | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,2 +1,3 @@ | ||
| export * from './discord'; | ||
| export * from './express'; | ||
| export * from './astar'; |
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