add etherscan to add transaction history

apps/desktop/src/bun/index.ts

@@ -55,6 +55,24 @@ ApplicationMenu.setApplicationMenu([
 
 const url = await getMainViewUrl()
 
+const ETHERSCAN_API = 'https://api.etherscan.io/v2/api'
+
+type EtherscanTx = {
+	blockNumber: string
+	timeStamp: string
+	hash: string
+	from: string
+	to: string
+	value: string
+	gas: string
+	gasPrice: string
+	isError: string
+	txreceipt_status: string
+	input: string
+	contractAddress: string
+	gasUsed: string
+}
+
 type RPC = {
 	bun: RPCSchema<{
 		requests: {
@@ -73,6 +91,15 @@ type RPC = {
 				}
 				response: Promise<void>
 			}
+			fetchTxHistory: {
+				params: {
+					address: string
+					chainid: string
+					page?: number
+					offset?: number
+				}
+				response: Promise<EtherscanTx[]>
+			}
 		}
 		messages: {}
 	}>
@@ -91,6 +118,39 @@ const rpc = BrowserView.defineRPC<RPC>({
 			setSecret: async ({ name, service, value }) => {
 				await Bun.secrets.set({ name, service, value })
 			},
+			fetchTxHistory: async ({
+				address,
+				chainid,
+				page = 1,
+				offset = 20,
+			}) => {
+				const key = await Bun.secrets.get({
+					service: 'koins',
+					name: 'etherscan_key',
+				})
+				if (!key) return []
+				const params = new URLSearchParams({
+					module: 'account',
+					action: 'txlist',
+					address,
+					page: String(page),
+					offset: String(offset),
+					sort: 'desc',
+					apikey: key,
+					chainid,
+				})
+				try {
+					const url = `${ETHERSCAN_API}?${params}`
+					const res = await fetch(url)
+					const data = await res.json()
+					console.log(data)
+					if (data.status !== '1') return []
+					return data.result as EtherscanTx[]
+				} catch (error) {
+					console.log(error)
+					return []
+				}
+			},
 		},
 		messages: {},
 	},

apps/desktop/src/lib/electrobun.ts

@@ -1,5 +1,21 @@
 import { Electroview } from 'electrobun/view'
 
+export type EtherscanTx = {
+	blockNumber: string
+	timeStamp: string
+	hash: string
+	from: string
+	to: string
+	value: string
+	isError: string
+	txreceipt_status: string
+	gas: string
+	gasPrice: string
+	input: string
+	contractAddress: string
+	gasUsed: string
+}
+
 type RPC = {
 	bun: {
 		requests: {
@@ -18,6 +34,15 @@ type RPC = {
 				}
 				response: Promise<void>
 			}
+			fetchTxHistory: {
+				params: {
+					address: string
+					chainid: string
+					page?: number
+					offset?: number
+				}
+				response: Promise<EtherscanTx[]>
+			}
 		}
 		messages: {}
 	}

apps/desktop/src/lib/states/wallet.svelte.ts

@@ -1,16 +1,102 @@
-import { JsonRpcProvider, HDNodeWallet, formatEther } from 'ethers'
+import {
-import { electrobun } from '$lib/electrobun'
+	JsonRpcProvider,
+	HDNodeWallet,
+	formatEther,
+	formatUnits,
+	Contract,
+} from 'ethers'
+import { electrobun, type EtherscanTx } from '$lib/electrobun'
 
-const BNB_RPC = 'https://bsc-dataseed.binance.org'
+const ERC20_ABI = [
+	'function balanceOf(address) view returns (uint256)',
+]
+
+export const networks = [
+	{
+		id: 'bsc',
+		name: 'BNB Smart Chain',
+		rpc: 'https://bsc-dataseed.binance.org',
+		symbol: 'BNB',
+		chainid: '56',
+		explorerUrl: 'https://bscscan.com/tx/',
+		tokens: [
+			{
+				symbol: 'USDC',
+				address: '0x8AC76a51cc950d9822D68b83fE1Ad97B32Cd580d',
+				decimals: 18,
+			},
+			{
+				symbol: 'USDT',
+				address: '0x55d398326f99059fF775485246999027B3197955',
+				decimals: 18,
+			},
+		],
+	},
+	{
+		id: 'polygon',
+		name: 'Polygon',
+		rpc: 'https://polygon.drpc.org',
+		symbol: 'POL',
+		chainid: '137',
+		explorerUrl: 'https://polygonscan.com/tx/',
+		tokens: [
+			{
+				symbol: 'USDC',
+				address: '0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359',
+				decimals: 6,
+			},
+			{
+				symbol: 'USDT',
+				address: '0xc2132D05D31c914a87C6611C10748AEb04B58e8F',
+				decimals: 6,
+			},
+		],
+	},
+	{
+		id: 'eth',
+		name: 'Ethereum',
+		rpc: 'https://ethereum-rpc.publicnode.com',
+		symbol: 'ETH',
+		chainid: '1',
+		explorerUrl: 'https://etherscan.io/tx/',
+		tokens: [
+			{
+				symbol: 'USDC',
+				address: '0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48',
+				decimals: 6,
+			},
+			{
+				symbol: 'USDT',
+				address: '0xdAC17F958D2ee523a2206206994597C13D831ec7',
+				decimals: 6,
+			},
+			{
+				symbol: 'BAT',
+				address: '0x0D8775F648430679A709E98d2b0Cb6250d2887EF',
+				decimals: 18,
+			},
+		],
+	},
+] as const
+
+export type NetworkId = (typeof networks)[number]['id']
+
+export type TokenBalance = { symbol: string; balance: string }
 
 export const Wallet = () => {
 	let seed = $state('')
 	let address = $state('')
 	let balance = $state('0')
+	let tokenBalances = $state<TokenBalance[]>([])
+	let network = $state<NetworkId>('bsc')
 	let loading = $state(false)
 	let error = $state('')
 	let vaultExists = $state(false)
 	let ready = $state(false)
+	let etherscanKey = $state('')
+	let transactions = $state<EtherscanTx[]>([])
+
+	const net = () => networks.find((n) => n.id === network)!
 
 	const init = async () => {
 		try {
@@ -19,6 +105,11 @@ export const Wallet = () => {
 				name: 'vault',
 			})
 			vaultExists = raw !== null && raw !== undefined
+			const key = await electrobun.rpc?.request.getSecret({
+				service: 'koins',
+				name: 'etherscan_key',
+			})
+			if (key) etherscanKey = key
 			if (raw) {
 				seed = raw
 				await refresh()
@@ -32,6 +123,11 @@ export const Wallet = () => {
 		}
 	}
 
+	const switchNetwork = async (id: NetworkId) => {
+		network = id
+		if (seed) await refresh()
+	}
+
 	const saveVault = async (phrase: string) => {
 		loading = true
 		error = ''
@@ -57,18 +153,37 @@ export const Wallet = () => {
 		address = ''
 		balance = '0'
 		error = ''
+		tokenBalances = []
+		transactions = []
 	}
 
 	const refresh = async () => {
 		if (!seed) return
 		loading = true
 		error = ''
+		tokenBalances = []
 		try {
 			const wallet = HDNodeWallet.fromPhrase(seed)
 			address = wallet.address
-			const provider = new JsonRpcProvider(BNB_RPC)
+			const provider = new JsonRpcProvider(net().rpc)
-			const bal = await provider.getBalance(wallet.address)
+			const [nativeBal, ...tokenBals] = await Promise.all([
-			balance = formatEther(bal)
+				provider.getBalance(wallet.address),
+				...net().tokens.map(async (t) => {
+					try {
+						const c = new Contract(t.address, ERC20_ABI, provider)
+						const bal = await c.balanceOf(wallet.address)
+						return {
+							symbol: t.symbol,
+							balance: formatUnits(bal, t.decimals),
+						}
+					} catch {
+						return { symbol: t.symbol, balance: '0' }
+					}
+				}),
+			])
+			balance = formatEther(nativeBal)
+			tokenBalances = tokenBals
+			fetchTxHistory()
 		} catch (e) {
 			error =
 				e instanceof Error ? e.message : 'Failed to fetch balance'
@@ -77,6 +192,28 @@ export const Wallet = () => {
 		}
 	}
 
+	const saveEtherscanKey = async (key: string) => {
+		await electrobun.rpc?.request.setSecret({
+			service: 'koins',
+			name: 'etherscan_key',
+			value: key,
+		})
+		etherscanKey = key
+		if (address) await fetchTxHistory()
+	}
+
+	const fetchTxHistory = async () => {
+		if (!address || !etherscanKey) {
+			transactions = []
+			return
+		}
+		const txs = await electrobun.rpc?.request.fetchTxHistory({
+			address,
+			chainid: net().chainid,
+		})
+		transactions = txs ?? []
+	}
+
 	return {
 		get isLocked() {
 			return vaultExists && !seed
@@ -90,6 +227,27 @@ export const Wallet = () => {
 		get balance() {
 			return balance
 		},
+		get tokenBalances() {
+			return tokenBalances
+		},
+		get network() {
+			return network
+		},
+		get chainid() {
+			return net().chainid
+		},
+		get networkName() {
+			return net().name
+		},
+		get symbol() {
+			return net().symbol
+		},
+		get explorerUrl() {
+			return net().explorerUrl
+		},
+		get tokens() {
+			return net().tokens
+		},
 		get loading() {
 			return loading
 		},
@@ -102,9 +260,21 @@ export const Wallet = () => {
 		get ready() {
 			return ready
 		},
+		get networks() {
+			return networks
+		},
+		get etherscanKey() {
+			return etherscanKey
+		},
+		get transactions() {
+			return transactions
+		},
 		refresh,
 		init,
 		lock,
 		saveVault,
+		switchNetwork,
+		saveEtherscanKey,
+		fetchTxHistory,
 	}
 }

apps/desktop/src/routes/index.svelte

@@ -9,9 +9,11 @@
 		CardHeader,
 		CardTitle,
 	} from '$lib/components/ui/card/index.js'
+	import { formatEther } from 'ethers'
 
 	let w = Wallet()
 	let inputSeed = $state('')
+	let apiKeyInput = $state('')
 
 	$effect(() => {
 		w.init()
@@ -53,18 +55,38 @@
 			</CardContent>
 		</Card>
 	{:else}
+		<div class="flex flex-col gap-4">
 			<Card>
 				<CardHeader>
+					<div class="flex items-center justify-between">
+						<div>
 							<CardTitle>Wallet</CardTitle>
 							<CardDescription>Your wallet is unlocked</CardDescription>
+						</div>
+						<div class="flex gap-1" role="group">
+							{#each w.networks as net}
+								<button
+									class="cursor-pointer rounded-md px-2.5 py-1 text-xs font-medium transition-colors {w.network === net.id ? 'bg-primary text-primary-foreground' : 'bg-muted text-muted-foreground hover:bg-muted/80'}"
+									onclick={() => w.switchNetwork(net.id)}>{net.name}</button>
+							{/each}
+						</div>
+					</div>
 				</CardHeader>
 				<CardContent>
 					{#if w.address}
 						<div class="mb-4 space-y-1">
 							<p class="font-medium text-xs">Address</p>
 							<p class="font-mono text-xs break-all">{w.address}</p>
-						<p class="mt-2 font-medium text-xs">BNB Balance</p>
+							<p class="mt-2 font-medium text-xs">{w.symbol} Balance</p>
-						<p class="font-mono text-lg">{w.balance} BNB</p>
+							<p class="font-mono text-lg">{w.balance} {w.symbol}</p>
+						</div>
+						<div class="mb-4 space-y-1">
+							<p class="font-medium text-xs">Tokens</p>
+							{#each w.tokenBalances as t}
+								<p class="font-mono text-sm">
+									{Number(t.balance) < 0.0001 && Number(t.balance) > 0 ? '<0.0001' : Number(t.balance).toFixed(4)} {t.symbol}
+								</p>
+							{/each}
 						</div>
 					{/if}
 
@@ -74,7 +96,7 @@
 
 					<div class="flex gap-2">
 						<Button onclick={() => w.refresh()} disabled={w.loading}>
-						{w.loading ? 'Refreshing...' : 'Refresh Balance'}
+							{w.loading ? 'Refreshing...' : 'Refresh'}
 						</Button>
 						<Button variant="outline" onclick={() => w.lock()}>
 							Lock
@@ -82,5 +104,48 @@
 					</div>
 				</CardContent>
 			</Card>
+
+			<Card>
+				<CardHeader>
+					<CardTitle>Transactions</CardTitle>
+				</CardHeader>
+				<CardContent>
+					{#if !w.etherscanKey}
+						<div class="flex gap-2 items-center">
+							<input
+								class="flex h-8 w-full rounded-md border border-input bg-transparent px-2 py-1 font-mono text-xs"
+								placeholder="Etherscan API key"
+								bind:value={apiKeyInput} />
+							<Button
+								size="sm"
+								onclick={() => w.saveEtherscanKey(apiKeyInput)}
+								disabled={!apiKeyInput.trim()}>Save</Button>
+						</div>
+					{:else if w.transactions.length === 0}
+						<p class="text-muted-foreground text-xs">No transactions found</p>
+					{:else}
+						<div class="max-h-48 space-y-1 overflow-y-auto">
+							{#each w.transactions.slice(0, 10) as tx}
+								<div class="flex items-center justify-between rounded-md bg-muted px-2 py-1.5 font-mono text-xs">
+									<div class="min-w-0 flex-1">
+										<p class="truncate" title={tx.hash}>
+											<a
+												href="{w.explorerUrl}{tx.hash}"
+												target="_blank"
+												rel="noreferrer"
+												class="hover:underline">{tx.hash.slice(0, 10)}...</a>
+										</p>
+										<p class="text-muted-foreground">{Number(formatEther(tx.value)).toFixed(4)} {w.symbol}</p>
+									</div>
+									<span class="shrink-0 {tx.isError === '0' ? 'text-green-500' : 'text-red-500'}">
+										{tx.isError === '0' ? '✓' : '✗'}
+									</span>
+								</div>
+							{/each}
+						</div>
+					{/if}
+				</CardContent>
+			</Card>
+		</div>
 	{/if}
 </div>