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import type {
AccountJson,
RequestSign,
} from '@polkadot/extension-base/background/types'
import { approveSignSignature, cancelSignRequest } from '../utils/messaging'
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import Qr, { CMD_MORTAL, CMD_SIGN_MESSAGE } from './Qr'
import { TypeRegistry } from '@polkadot/types'
import type { ExtrinsicPayload } from '@polkadot/types/interfaces'
import type { SignerPayloadJSON, SignerPayloadRaw } from '@polkadot/types/types'
import { decodeAddress } from '@polkadot/util-crypto'
import React, { useContext, useEffect, useState } from 'react'
import Address from '../components/Address'
interface Props {
account: AccountJson
buttonText: string
isFirst: boolean
request: RequestSign
signId: string
url: string
}
interface Data {
hexBytes: string | null
payload: ExtrinsicPayload | null
}
// keep it global, we can and will re-use this across requests
const registry = new TypeRegistry()
function isRawPayload(
payload: SignerPayloadJSON | SignerPayloadRaw
): payload is SignerPayloadRaw {
return !!(payload as SignerPayloadRaw).data
}
const Request: React.FC<Props> = ({ request, signId }) => {
const [{ hexBytes, payload }, setData] = useState<Data>({
hexBytes: null,
payload: null,
})
const { accounts } = useContext(AccountContext)
const onSignature = ({ signature }: { signature: string }) =>
approveSignSignature(signId, signature).catch(console.error)
const onCancel = () => cancelSignRequest(signId).catch(console.error)
useEffect(() => {
const payload = request.payload
if (isRawPayload(payload)) {
setData({
hexBytes: payload.data,
payload: null,
})
} else {
registry.setSignedExtensions(payload.signedExtensions)
setData({
hexBytes: null,
payload: registry.createType('ExtrinsicPayload', payload, {
version: payload.version,
}),
})
}
}, [request])
if (payload !== null) {
const json = request.payload as SignerPayloadJSON
return (
<>
<Address address={json.address} genesisHash={json.genesisHash} />
<Qr
address={json.address}
cmd={CMD_MORTAL}
genesisHash={json.genesisHash}
onSignature={onSignature}
payload={payload}
/>
<button onClick={onCancel}>{'Cancel'}</button>
</>
)
}
if (hexBytes !== null) {
const { address, data } = request.payload as SignerPayloadRaw
const account = accounts.find(
(account) =>
decodeAddress(account.address).toString() ===
decodeAddress(address).toString()
)
return (
<>
<Address address={address} />
{account?.genesisHash && (
<Qr
address={address}
cmd={CMD_SIGN_MESSAGE}
genesisHash={account.genesisHash}
onSignature={onSignature}
payload={data}
/>
)}
<button onClick={onCancel}>{'Cancel'}</button>
</>
)
}
return null
}
export default Request