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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,25 @@ | ||
| import type { Struct } from '@polkadot/types-codec'; | ||
| import type { Balance } from '@polkadot/types/interfaces/runtime'; | ||
| import { ApiPromise, HttpProvider } from '@polkadot/api'; | ||
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| const ROCOCO_RPC_URL = 'https://rococo-rpc.polkadot.io/'; | ||
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| export type AccountData = { | ||
| readonly free: Balance; | ||
| } & Struct; | ||
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| export async function initApi(): Promise<ApiPromise> { | ||
| let provider: HttpProvider; | ||
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| try { | ||
| provider = new HttpProvider(ROCOCO_RPC_URL); | ||
| } catch (error) { | ||
| console.error('Error on provider creation', error); | ||
| throw error; | ||
| } | ||
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| const apiPromise = new ApiPromise({ provider }); | ||
| await apiPromise.isReady; | ||
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| return apiPromise; | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,24 @@ | ||
| import { getBIP44AddressKeyDeriver } from '@metamask/key-tree'; | ||
| import { Keyring } from '@polkadot/api'; | ||
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| async function getKeyPair() { | ||
| const polkadotTypeNode = await snap.request({ | ||
| method: 'snap_getBip44Entropy', | ||
| params: { | ||
| coinType: 354, | ||
| }, | ||
| }); | ||
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| const deriveAddressKey = await getBIP44AddressKeyDeriver(polkadotTypeNode); | ||
| const addressKey0 = await deriveAddressKey(0); | ||
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| const keyring = new Keyring({ ss58Format: 42 }); | ||
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| if (!addressKey0.privateKeyBytes) { | ||
| throw new Error('No private key found'); | ||
| } | ||
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| return keyring.addFromSeed(addressKey0.privateKeyBytes); | ||
| } | ||
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| export default getKeyPair; |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,24 +1,9 @@ | ||
| import { getBIP44AddressKeyDeriver } from '@metamask/key-tree'; | ||
| import { Keyring } from '@polkadot/api'; | ||
| import getKeyPair from '../polkadot/getKeyPair'; | ||
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| async function getAddress() { | ||
| const polkadotTypeNode = await snap.request({ | ||
| method: 'snap_getBip44Entropy', | ||
| params: { | ||
| coinType: 434, | ||
| }, | ||
| }); | ||
| const keypair = await getKeyPair(); | ||
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| const deriveAddressKey = await getBIP44AddressKeyDeriver(polkadotTypeNode); | ||
| const addressKey0 = await deriveAddressKey(0); | ||
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| const keyring = new Keyring({ ss58Format: 2 }); | ||
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| if (!addressKey0.privateKeyBytes) { | ||
| throw new Error('No private key found'); | ||
| } | ||
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| return keyring.addFromSeed(addressKey0.privateKeyBytes).address; | ||
| return keypair.address; | ||
| } | ||
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| export default getAddress; |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,31 @@ | ||
| import { heading, panel, text } from '@metamask/snaps-ui'; | ||
| import getKeyPair from '../polkadot/getKeyPair'; | ||
| import { initApi } from '../polkadot/api'; | ||
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| export async function transfer( | ||
| to: string, | ||
| amount: string, | ||
| ): Promise<{ signature: string } | void> { | ||
| const isConfirmed = await snap.request({ | ||
| method: 'snap_dialog', | ||
| params: { | ||
| type: 'confirmation', | ||
| content: panel([ | ||
| heading('Confirm Transfer'), | ||
| text(`Are you sure you want to transfer ${amount} to ${to}?`), | ||
| ]), | ||
| }, | ||
| }); | ||
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| if (isConfirmed) { | ||
| const user = await getKeyPair(); | ||
| const api = await initApi(); | ||
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| const transferTransaction = await api.tx.balances | ||
| .transferKeepAlive(to, amount) | ||
| .signAndSend(user); | ||
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| console.log('paymentInfo', transferTransaction); | ||
| console.log(JSON.stringify(transferTransaction)); | ||
| } | ||
| } |
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