feat: :(

_templates/apiHandler/new/apiHandler.ejs.t

@@ -19,6 +19,3 @@ const handler: NextApiHandler<ResponseBody> = (req, res) => {
 }
 
 export default handler
-
-
-

_templates/dataStore/new/dataStore.ejs.t

@@ -0,0 +1,15 @@
+---
+to: lib/db/<%= name %>.ts
+---
+import Dexie, { Table } from 'dexie'
+
+import db from '.'
+
+interface Value {
+}
+
+export type Key = unknown
+export type Value = Value
+
+export const schema = undefined // this should be a string like 'key,value'
+

_templates/hook/new/hook.ejs.t

@@ -8,6 +8,3 @@ const <%= name %> = () => {
 }
 
 export default <%= name %>
-
-
-

components/Balance.tsx

@@ -1,11 +1,11 @@
 import clsx from 'clsx'
 import { tools } from 'nanocurrency-web'
-import { FC, useMemo } from 'react'
+import { FC } from 'react'
 import useSWR from 'swr'
 
-import { useAccount, useAccounts } from '../lib/context/accountContext'
+import { useAccount } from '../lib/context/accountContext'
 import { usePreferences } from '../lib/context/preferencesContext'
-import { ShowCurrencyPreference } from '../lib/db/preferences'
+import { ShowCurrencyPreference } from '../lib/db/types'
 import fetcher from '../lib/fetcher'
 
 export interface Props {

components/BottomMenu.tsx

@@ -15,6 +15,7 @@ import { useRouter } from 'next/router'
 import { FC, useState } from 'react'
 
 import { checkBiometrics } from '../lib/biometrics'
+import computeWorkAsync from '../lib/computeWorkAsync'
 import { useAccount, useAccounts } from '../lib/context/accountContext'
 import { usePreferences } from '../lib/context/preferencesContext'
 import { getEncryptedSeed } from '../lib/db/encryptedSeeds'
@@ -142,7 +143,7 @@ const BottomMenu: FC<Props> = ({ className }) => {
                   ? 'left-0 -translate-x-2/3 rounded-l'
                   : 'right-0 translate-x-2/3 rounded-r'
               )}
-              onClick={() => push('/readQrCode')}
+              onClick={() => push('/send/qr')}
             >
               <UploadIcon className="h-full text-purple-50 dark:text-gray-900 w-full" />
             </button>
@@ -159,7 +160,7 @@ const BottomMenu: FC<Props> = ({ className }) => {
                   ? 'right-0 translate-x-2/3 rounded-r'
                   : 'left-0 -translate-x-2/3 rounded-l'
               )}
-              onClick={() => push('/myQrCode')}
+              onClick={() => push('/receive/qr')}
             >
               <DownloadIcon className="h-full text-purple-50 dark:text-gray-900 w-full" />
             </button>
@@ -175,6 +176,11 @@ const BottomMenu: FC<Props> = ({ className }) => {
             <button
               disabled={isWelcoming}
               className="bg-purple-500 p-1 h-7 rounded hover:bg-purple-400 disabled:hover:bg-purple-500 shadow-lg disabled:cursor-default"
+              onClick={() =>
+                computeWorkAsync(
+                  account?.frontier ?? account?.publicKey ?? ''
+                ).then(console.log)
+              }
             >
               <RssIcon className="h-full text-purple-50 dark:text-gray-900" />
             </button>

lib/computeWorkAsync.ts

@@ -0,0 +1,45 @@
+const computeWorkAsync = (frontier: string, workerCount = 4) => {
+  const workers: Worker[] = []
+
+  const cleanup = () => {
+    workers.forEach(worker => worker.terminate())
+    abortController.abort()
+  }
+  const abortController = new AbortController()
+
+  const onlineWorkPromise = fetch(`/api/computeWork?frontier=${frontier}`, {
+    signal: abortController.signal,
+  }).then(async res => {
+    if (res.status !== 200) throw new Error()
+    else {
+      const { work } = await res.json()
+      return work as string
+    }
+  })
+
+  const offlineWorkPromise = new Promise<string | null>((res, rej) => {
+    const maxWorkers = navigator.hardwareConcurrency ?? workerCount
+
+    const createWorker = (id: number) => {
+      const worker = new Worker(new URL('./workComputer.ts', import.meta.url))
+      worker.onmessage = work => {
+        cleanup()
+        if (work === null) rej('failed_work')
+        else res(work.data)
+      }
+      worker.onerror = work => {
+        cleanup()
+        rej(work)
+      }
+
+      worker.postMessage({ frontier, id })
+      return worker
+    }
+
+    for (let i = 0; i < maxWorkers; i++) workers.push(createWorker(i))
+  })
+
+  return Promise.any([onlineWorkPromise, offlineWorkPromise])
+}
+
+export default computeWorkAsync

lib/context/accountContext.tsx

@@ -9,17 +9,17 @@ import {
 
 import { AccountInfoCache } from '../types'
 
-export interface AddressContextValue {
+export interface AccountContextValue {
   currAccount: AccountInfoCache | undefined
   accounts: { [key: number]: AccountInfoCache } | undefined
   setAccount: (info: AccountInfoCache) => void
   removeAccount: (index: number) => void
 }
 
-const addressContext = createContext<AddressContextValue | undefined>(undefined)
+const accountContext = createContext<AccountContextValue | undefined>(undefined)
 
 export const useAccounts = () => {
-  const contextValue = useContext(addressContext)
+  const contextValue = useContext(accountContext)
   if (contextValue === undefined)
     throw new Error('`useAddress` must be used insisde a context `Provider`')
   return contextValue
@@ -36,7 +36,7 @@ export const useAccount = (index?: number) => {
     : contextValue.currAccount
 }
 
-export const AddressProvider: FC<{
+export const AccountProvider: FC<{
   initialAccounts?: { [key: number]: AccountInfoCache } | undefined
   initialAccountIndex?: number
 }> = ({ children, initialAccounts, initialAccountIndex }) => {
@@ -66,16 +66,23 @@ export const AddressProvider: FC<{
     })
   }, [])
 
+  const currAccount = accounts?.[currAccountIndex]
+
+  useEffect(() => {
+    if (currAccount !== undefined) {
+    }
+  }, [currAccount])
+
   return (
-    <addressContext.Provider
+    <accountContext.Provider
       value={{
         accounts,
         setAccount,
         removeAccount,
-        currAccount: accounts?.[currAccountIndex],
+        currAccount,
       }}
     >
       {children}
-    </addressContext.Provider>
+    </accountContext.Provider>
   )
 }

lib/context/preferencesContext.tsx

@@ -7,13 +7,12 @@ import {
   useState,
 } from 'react'
 
+import { getPreference, putPreference } from '../db/preferences'
 import {
   PreferenceName,
   PreferenceTypes,
   ShowCurrencyPreference,
-  getPreference,
-  putPreference,
-} from '../db/preferences'
+} from '../db/types'
 import useDarkMode from '../hooks/useDarkMode'
 import isiOS from '../isiOS'
 

lib/db/accounts.ts

@@ -1,23 +1,25 @@
-import Dexie, { Table } from 'dexie'
-
 import db from '.'
+import computeWorkAsync from '../computeWorkAsync'
 import { AccountInfoCache } from '../types'
 
-interface Account {
-  index: number
-  account: AccountInfoCache
+export const addAccount = async (index: number, account: AccountInfoCache) => {
+  db.accounts.add({
+    ...account,
+    index,
+    precomputedWork: null,
+  })
+  const precomputedWork = await computeWorkAsync(
+    account.frontier ?? account.publicKey
+  )
+  const hasWork = precomputedWork !== null
+  if (hasWork)
+    db.accounts.where({ index }).modify(account => {
+      if (account !== undefined) account.precomputedWork = precomputedWork
+    })
 }
 
-export type Key = number
-export type Value = Account
-
-export const schema = 'index,account'
-
-export const addAccount = (index: number, account: AccountInfoCache) =>
-  db.accounts.add({ account, index })
-
 export const putAccount = (index: number, account: AccountInfoCache) =>
-  db.accounts.put({ account, index })
+  db.accounts.update(index, { ...account })
 
 export const removeAccount = (index: number) => db.accounts.delete(index)
 
@@ -25,7 +27,39 @@ export const getAccount = (index: number) =>
   db.accounts
     .where({ index })
     .first()
-    .then(res => (res === undefined ? undefined : res.account))
+    .then(res => (res === undefined ? undefined : res))
 
 export const hasAccount = async (index: number) =>
   (await db.accounts.where({ index }).count()) > 0
+
+export const addPrecomputedWork = async (
+  address: string,
+  work?: string | null
+) =>
+  db.accounts.where({ address }).modify(async account => {
+    if (work !== undefined && work !== null) account.precomputedWork = work
+    else {
+      const precomputedWork = await computeWorkAsync(
+        account.frontier ?? account.publicKey
+      )
+      if (precomputedWork !== null) account.precomputedWork = precomputedWork
+    }
+  })
+
+export const getPrecomputedWork = async (address: string) =>
+  db.accounts
+    .where({ address })
+    .first()
+    .then(account => account?.precomputedWork)
+
+export const consumePrecomputedWork = async (address: string) => {
+  const account = await db.accounts.where({ address }).first()
+  if (account === undefined) return undefined
+  db.accounts.where({ address }).modify(account => {
+    account.precomputedWork = null
+  })
+  const precomputedWork = await computeWorkAsync(
+    account.frontier ?? account.publicKey
+  )
+  addPrecomputedWork(address, precomputedWork)
+}

lib/db/cryptoAssets.ts

@@ -1,18 +1,5 @@
-import Dexie, { Table } from 'dexie'
-
 import db from '.'
-
-export type CryptoAssetId = 'challenge' | 'credentialId'
-
-interface CryptoAsset {
-  id: CryptoAssetId
-  cryptoAsset: Uint8Array
-}
-
-export type Key = CryptoAssetId
-export type Value = CryptoAsset
-
-export const schema = 'id,cryptoAsset'
+import { CryptoAssetId } from './types'
 
 export const addCryptoAsset = (id: CryptoAssetId, cryptoAsset: Uint8Array) =>
   db.cryptoAssets.add({ id, cryptoAsset })

lib/db/database.ts

@@ -0,0 +1,37 @@
+import Dexie, { Table } from 'dexie'
+
+import type {
+  AccountsKey,
+  AccountsValue,
+  CryptoAssetKey,
+  CryptoAssetValue,
+  EncryptedSeedKey,
+  EncryptedSeedValue,
+  PreferenceKey,
+  PreferenceValue,
+} from './types'
+import {
+  accountsSchema,
+  cryptoAssetSchema,
+  encryptedSeedSchema,
+  preferenceSchema,
+} from './types'
+
+class Database extends Dexie {
+  public encryptedSeeds!: Table<EncryptedSeedValue, EncryptedSeedKey>
+  public cryptoAssets!: Table<CryptoAssetValue, CryptoAssetKey>
+  public accounts!: Table<AccountsValue, AccountsKey>
+  public preferences!: Table<PreferenceValue, PreferenceKey>
+
+  public constructor() {
+    super('Database')
+    this.version(1).stores({
+      encryptedSeeds: encryptedSeedSchema,
+      cryptoAssets: cryptoAssetSchema,
+      preferences: preferenceSchema,
+      accounts: accountsSchema,
+    })
+  }
+}
+
+export default Database

lib/db/encryptedSeeds.ts

@@ -1,18 +1,5 @@
-import Dexie, { Table } from 'dexie'
-
 import db from '.'
-
-export type EncryptedSeedId = 'pin' | 'os'
-
-interface EncryptedSeed {
-  id: EncryptedSeedId
-  encryptedSeed: string
-}
-
-export type Key = EncryptedSeedId
-export type Value = EncryptedSeed
-
-export const schema = 'id,encryptedSeed'
+import { EncryptedSeedId } from './types'
 
 export const addEncryptedSeed = (id: EncryptedSeedId, encryptedSeed: string) =>
   db.encryptedSeeds.add({ id, encryptedSeed })

lib/db/index.ts

@@ -1,42 +1,4 @@
-import Dexie, { Table } from 'dexie'
-
-import {
-  Key as AccountsKey,
-  Value as AccountsValue,
-  schema as accountsSchema,
-} from './accounts'
-import {
-  Key as CryptoAssetsKey,
-  Value as CryptoAssetsValue,
-  schema as cryptoAssetsSchema,
-} from './cryptoAssets'
-import {
-  Key as EncryptedSeedsKey,
-  Value as EncryptedSeedsValue,
-  schema as encryptedSeedsSchema,
-} from './encryptedSeeds'
-import {
-  Key as PreferencesKey,
-  Value as PreferencesValue,
-  schema as preferencesSchema,
-} from './preferences'
-
-class Database extends Dexie {
-  public encryptedSeeds!: Table<EncryptedSeedsValue, EncryptedSeedsKey>
-  public cryptoAssets!: Table<CryptoAssetsValue, CryptoAssetsKey>
-  public accounts!: Table<AccountsValue, AccountsKey>
-  public preferences!: Table<PreferencesValue, PreferencesKey>
-
-  public constructor() {
-    super('Database')
-    this.version(1).stores({
-      encryptedSeeds: encryptedSeedsSchema,
-      cryptoAssets: cryptoAssetsSchema,
-      preferences: preferencesSchema,
-      accounts: accountsSchema,
-    })
-  }
-}
+import Database from './database'
 
 const db = new Database()
 

lib/db/preferences.ts

@@ -1,31 +1,5 @@
-import Dexie, { Table } from 'dexie'
-
 import db from '.'
-
-export enum ShowCurrencyPreference {
-  Xno = 'xno',
-  Both = 'both',
-  None = 'none',
-}
-
-export interface PreferenceTypes {
-  darkMode: boolean | undefined
-  biometricsAuth: boolean | undefined
-  leftHanded: boolean | undefined
-  showCurrencyDash: ShowCurrencyPreference | undefined
-}
-
-export type PreferenceName = keyof PreferenceTypes
-
-interface Preference {
-  name: PreferenceName
-  value: string
-}
-
-export type Key = PreferenceName
-export type Value = Preference
-
-export const schema = 'name,value'
+import { PreferenceName, PreferenceTypes } from './types'
 
 export const addPreference = <P extends PreferenceName>(
   name: P,

lib/db/types.ts

@@ -0,0 +1,59 @@
+import { AccountInfoCache } from '../types'
+
+export type EncryptedSeedId = 'pin' | 'os'
+
+interface EncryptedSeed {
+  id: EncryptedSeedId
+  encryptedSeed: string
+}
+
+export type EncryptedSeedKey = EncryptedSeedId
+export type EncryptedSeedValue = EncryptedSeed
+
+export const encryptedSeedSchema = 'id'
+
+interface Account extends AccountInfoCache {
+  index: number
+  precomputedWork: string | null
+}
+
+export type AccountsKey = number
+export type AccountsValue = Account
+export const accountsSchema = 'index,address'
+
+export type CryptoAssetId = 'challenge' | 'credentialId'
+
+interface CryptoAsset {
+  id: CryptoAssetId
+  cryptoAsset: Uint8Array
+}
+
+export type CryptoAssetKey = CryptoAssetId
+export type CryptoAssetValue = CryptoAsset
+
+export const cryptoAssetSchema = 'id'
+
+export enum ShowCurrencyPreference {
+  Xno = 'xno',
+  Both = 'both',
+  None = 'none',
+}
+
+export interface PreferenceTypes {
+  darkMode: boolean | undefined
+  biometricsAuth: boolean | undefined
+  leftHanded: boolean | undefined
+  showCurrencyDash: ShowCurrencyPreference | undefined
+}
+
+export type PreferenceName = keyof PreferenceTypes
+
+interface Preference {
+  name: PreferenceName
+  value: string
+}
+
+export type PreferenceKey = PreferenceName
+export type PreferenceValue = Preference
+
+export const preferenceSchema = 'name'

lib/hooks/useReceiveNano.ts

@@ -2,6 +2,7 @@ import { computeWork, hashBlock } from 'nanocurrency'
 import { useCallback } from 'react'
 
 import { useAccount } from '../context/accountContext'
+import { consumeWork } from '../db/accounts'
 import fetcher from '../fetcher'
 import receiveNano from '../nano/receiveNano'
 
@@ -22,7 +23,7 @@ const useReceiveNano = () => {
             account.frontier ??
             '0000000000000000000000000000000000000000000000000000000000000000',
           amountRaw: amount,
-          work: (await computeWork(account.frontier ?? account.publicKey))!,
+          work: await consumeWork(account.address),
         },
         account.index
       )

lib/hooks/useSendNano.ts

@@ -1,8 +1,7 @@
-import { computeWork } from 'nanocurrency'
 import { useCallback } from 'react'
 
 import { useAccount } from '../context/accountContext'
-import fetcher from '../fetcher'
+import { consumePrecomputedWork, getPrecomputedWork } from '../db/accounts'
 import sendNano from '../nano/sendNano'
 
 const useSendNano = () => {
@@ -17,7 +16,7 @@ const useSendNano = () => {
         account.frontier === null
       )
         return
-      const signedBlock = sendNano(
+      const signedBlock = await sendNano(
         {
           walletBalanceRaw: account.balance,
           fromAddress: account.address,
@@ -25,11 +24,11 @@ const useSendNano = () => {
           representativeAddress: account.representative,
           frontier: account.frontier,
           amountRaw: amount,
-          work: (await computeWork(account.frontier))!,
+          work: (await getPrecomputedWork(account.address)) ?? undefined,
         },
         account.index
       )
-      return fetcher('https://mynano.ninja/api/node', {
+      return fetch('https://mynano.ninja/api/node', {
         method: 'POST',
         headers: [['Content-Type', 'application/json']],
         body: JSON.stringify({
@@ -39,6 +38,14 @@ const useSendNano = () => {
           block: signedBlock,
         }),
       })
+        .then(res => {
+          if (!res.ok) throw new Error()
+          return res.json()
+        })
+        .then(data => {
+          if ('error' in data) throw new Error()
+          consumePrecomputedWork(account.address)
+        })
     },
     [account]
   )

lib/hooks/useSetupAccounts.ts

@@ -13,13 +13,18 @@ const useSetupAccounts = (skip?: boolean) => {
     const dbAccount = await getAccount(0)
     if (dbAccount !== undefined) {
       setAccounts({ 0: dbAccount })
-      const infoRes = await fetchAccountInfo(dbAccount.address)
+      const infoResponse = await fetchAccountInfo(dbAccount.address)
 
       const freshAccountInfo = {
         ...dbAccount,
-        frontier: 'error' in infoRes ? null : infoRes.confirmed_frontier,
+        frontier:
+          'error' in infoResponse ? null : infoResponse.confirmed_frontier,
         representative:
-          'error' in infoRes ? null : infoRes.confirmed_representative,
+          'error' in infoResponse
+            ? null
+            : infoResponse.confirmed_representative,
+        balance:
+          'error' in infoResponse ? null : infoResponse.confirmed_balance,
       }
       setAccounts({ 0: freshAccountInfo })
       putAccount(dbAccount.index, freshAccountInfo)

lib/hooks/useSetupSeed.ts

@@ -1,15 +1,13 @@
-import { AES } from 'crypto-js'
 import { wallet } from 'nanocurrency-web'
 import { useRouter } from 'next/router'
 import { useCallback, useState } from 'react'
 
-import { checkBiometrics, registerBiometrics } from '../biometrics'
+import { registerBiometrics } from '../biometrics'
 import { useAccounts } from '../context/accountContext'
 import { addAccount } from '../db/accounts'
 import { addEncryptedSeed, hasEncryptedSeed } from '../db/encryptedSeeds'
 import encryptSeed from '../encryptSeed'
 import accountAtIndex from '../nano/accountAtIndex'
-import fetchAccountInfo from '../nano/fetchAccountInfo'
 import useSetup from './useSetup'
 
 const useSetupSeed = (skip?: boolean) => {
@@ -33,12 +31,9 @@ const useSetupSeed = (skip?: boolean) => {
       ])
       const { address, publicKey } = accountAtIndex(generatedSeed, 0)
 
-      const infoRes = await fetchAccountInfo(address)
-
       const account = {
-        frontier: 'error' in infoRes ? null : infoRes.confirmed_frontier,
-        representative:
-          'error' in infoRes ? null : infoRes.confirmed_representative,
+        frontier: null,
+        representative: address,
         balance: '0',
         index: 0,
         address,

lib/nano/isTxnUrl.ts

@@ -0,0 +1,3 @@
+const isTxnUrl = (urlOrAddress: string) => urlOrAddress.startsWith('nano:')
+
+export default isTxnUrl

lib/nano/receiveNano.ts

@@ -1,3 +1,4 @@
+import { hashBlock } from 'nanocurrency'
 import { block } from 'nanocurrency-web'
 
 import decryptSeed from '../decryptSeed'

lib/nano/receiveNano2.ts

@@ -1,56 +0,0 @@
-import { computeWork, hashBlock } from 'nanocurrency'
-import { block, wallet } from 'nanocurrency-web'
-
-import decryptSeed from '../decryptSeed'
-import fetcher from '../fetcher'
-
-const receiveNano = async (myAddress: string, hash: string, amount: string) => {
-  const accountInfo: any = await fetcher('https://mynano.ninja/api/node', {
-    method: 'POST',
-    headers: [['Content-Type', 'application/json']],
-    body: JSON.stringify({
-      action: 'account_info',
-      account: myAddress,
-    }),
-  })
-
-  if ('error' in accountInfo) {
-    const seed = await decryptSeed('os')
-    console.log('start work')
-    const work = (await computeWork(wallet.accounts(seed, 0, 0)[0].publicKey, {
-      workThreshold: 'fffffe0000000000',
-    }))!
-    console.log('end work')
-    const data = {
-      walletBalanceRaw: '0',
-      toAddress: myAddress,
-      representativeAddress: myAddress,
-      frontier:
-        '0000000000000000000000000000000000000000000000000000000000000000',
-      amountRaw: amount,
-      transactionHash: hash,
-      work,
-    }
-    console.log(seed)
-    const signedBlock = block.receive(
-      data,
-      wallet.accounts(seed, 0, 0)[0].privateKey
-    )
-    console.log(signedBlock)
-
-    const res: any = await fetcher('https://mynano.ninja/api/node', {
-      method: 'POST',
-      headers: [['Content-Type', 'application/json']],
-      body: JSON.stringify({
-        action: 'process',
-        json_block: 'true',
-        subtype: 'open',
-        block: signedBlock,
-      }),
-    })
-
-    console.log(res)
-  }
-}
-
-export default receiveNano

lib/nano/txnUrlToParts.ts

@@ -0,0 +1,8 @@
+const txnUrlToParts = (url: string) => {
+  console.log(url)
+  const [address] = url.split('nano:')[1].split('?')
+  const [amount] = url.split('amount')[1].split('&')
+  return { address, amount }
+}
+
+export default txnUrlToParts

lib/workComputer.ts

@@ -0,0 +1,8 @@
+import { computeWork } from 'nanocurrency'
+
+onmessage = async ev => {
+  console.time(`worker${ev.data.id}`)
+  const work = await computeWork(ev.data.frontier)
+  console.timeEnd(`worker${ev.data.id}`)
+  postMessage(work)
+}

package.json

@@ -13,6 +13,7 @@
     "format": "prettier --write .",
     "gen:component": "hygen component new",
     "gen:apiHandler": "hygen apiHandler new",
+    "gen:dataStore": "hygen dataStore new",
     "gen:page": "hygen page new",
     "gen:hook": "hygen hook new"
   },

pages/_app.tsx

@@ -4,7 +4,7 @@ import { SWRConfig } from 'swr'
 import 'tailwindcss/tailwind.css'
 
 import Layout from '../components/Layout'
-import { AddressProvider } from '../lib/context/accountContext'
+import { AccountProvider } from '../lib/context/accountContext'
 import { PreferencesProvider } from '../lib/context/preferencesContext'
 import fetcher from '../lib/fetcher'
 import useDarkMode from '../lib/hooks/useDarkMode'
@@ -27,13 +27,13 @@ const MyApp: FC<AppProps> = ({ Component, pageProps }) => {
 
   return (
     <SWRConfig value={{ fetcher, provider: () => new Map() }}>
-      <AddressProvider initialAccounts={accounts} initialAccountIndex={0}>
+      <AccountProvider initialAccounts={accounts} initialAccountIndex={0}>
         <PreferencesProvider>
           <Layout>
             <Component {...pageProps} />
           </Layout>
         </PreferencesProvider>
-      </AddressProvider>
+      </AccountProvider>
     </SWRConfig>
   )
 }

pages/api/computeWork.ts

@@ -0,0 +1,24 @@
+import { computeWork } from 'nanocurrency'
+import { NextApiHandler } from 'next'
+
+const get: NextApiHandler<string> = async (req, res) => {
+  if (req.method !== 'GET') {
+    res.status(405).end()
+    return
+  }
+
+  const { frontier } = req.query
+
+  console.time('computeWork')
+  const work = await computeWork(frontier as string)
+  console.timeEnd('computeWork')
+
+  if (work === null) {
+    res.status(500).send(JSON.stringify({ error: "Couldn't compute work" }))
+    return
+  }
+
+  res.status(200).send(JSON.stringify({ work }))
+}
+
+export default get

pages/receive/qr.tsx

@@ -1,7 +1,7 @@
 import type { NextPage } from 'next'
 
-import { useAccount } from '../lib/context/accountContext'
-import useDrawQrCode from '../lib/hooks/useDrawQrCode'
+import { useAccount } from '../../lib/context/accountContext'
+import useDrawQrCode from '../../lib/hooks/useDrawQrCode'
 
 const MyQrCode: NextPage = () => {
   const account = useAccount()

pages/send/index.tsx

@@ -0,0 +1,57 @@
+import { UploadIcon } from '@heroicons/react/solid'
+import { Unit, convert } from 'nanocurrency'
+import type { NextPage } from 'next'
+import { useRouter } from 'next/router'
+import { useState } from 'react'
+
+import useSendNano from '../../lib/hooks/useSendNano'
+
+const Send: NextPage = () => {
+  const { query } = useRouter()
+  const { address, amount } = query
+
+  const hasAmount = amount !== undefined
+
+  const [xnoToSend, setXnoToSend] = useState('')
+  const send = useSendNano()
+
+  return (
+    <div>
+      {hasAmount ? (
+        <>
+          <h1>you&apos;re sending</h1>
+          <h2>
+            Ӿ {convert(amount as string, { from: Unit.raw, to: Unit.Nano })}
+          </h2>
+          <span>to</span>
+          <h2>{address}</h2>
+        </>
+      ) : (
+        <>
+          <h1>send</h1>
+          <h2>Ӿ</h2>
+          <input
+            className="text-gray-900"
+            value={xnoToSend}
+            onChange={({ target: { value } }) => setXnoToSend(value)}
+          />
+          <span>to</span>
+          <h2>{address}</h2>
+        </>
+      )}
+      <button
+        onClick={() =>
+          send(
+            address as string,
+            (amount as string) ??
+              convert(xnoToSend, { from: Unit.Nano, to: Unit.raw })
+          )
+        }
+      >
+        send <UploadIcon />
+      </button>
+    </div>
+  )
+}
+
+export default Send

pages/send/qr.tsx

@@ -1,13 +1,23 @@
 import clsx from 'clsx'
 import type { NextPage } from 'next'
+import { useRouter } from 'next/router'
 import { useCallback } from 'react'
 
-import useReadQrFromVideo from '../lib/hooks/useReadQrFromVideo'
+import useReadQrFromVideo from '../../lib/hooks/useReadQrFromVideo'
+import isTxnUrl from '../../lib/nano/isTxnUrl'
+import txnUrlToParts from '../../lib/nano/txnUrlToParts'
 
 const ReadQrCode: NextPage = () => {
-  const onQrCodeRead = useCallback((url: string) => {
-    console.log(url)
-  }, [])
+  const { push } = useRouter()
+  const onQrCodeRead = useCallback(
+    (urlOrAddress: string) => {
+      if (isTxnUrl(urlOrAddress)) {
+        const { address, amount } = txnUrlToParts(urlOrAddress)
+        push(`/send?address=${address}&amount=${amount}`)
+      } else push(`/send?address=${urlOrAddress}`)
+    },
+    [push]
+  )
   const { videoLive, videoRef } = useReadQrFromVideo(onQrCodeRead)
 
   return (

pages/welcome/new/index.tsx

@@ -9,13 +9,13 @@ const New: NextPage = () => {
   const { push } = useRouter()
   const [storing, setStoring] = useState(false)
   useEffect(() => {
-    const copyAndGoToStore = async () => {
     if (seed !== undefined) {
+      const copyAndGoToStore = async () => {
         await navigator.clipboard.writeText(seed.mnemonic)
         setStoring(true)
       }
-    }
       copyAndGoToStore()
+    }
   }, [seed, push])
 
   const onStoreClick = async () => {

seeds.json

@@ -1,3 +1,4 @@
 [
-  "expand target gospel goose oppose acquire genius hurdle trade size huge pact square silk canal bar curve shallow pistol push crowd glory slice news"
+  "expand target gospel goose oppose acquire genius hurdle trade size huge pact square silk canal bar curve shallow pistol push crowd glory slice news",
+  "81631b9773ab0f4ff0d61a0ae092ec564acc01912aedbd849c420e10b2c38c7edc2c5494f778d3122a5933261c3a09b17f1b1be33d3b068d3228529a24bf94b3"
 ]