Update payment wizard to support USDT

.env

@@ -31,7 +31,7 @@ TS_PUBLIC_TYPESENSE_API_URL=https://typesense.tradingstrategy.ai
 TS_PUBLIC_TYPESENSE_API_KEY=npdPPJNELDhdr7v6IS9rQUpFG2VvdyAL
 TS_PUBLIC_DISCORD_URL=https://discord.gg/5M88m9nM8H
 TS_PUBLIC_WALLET_CONNECT_PROJECT_ID=9ee7efad98897eb60ba023db6aa72355
-TS_PUBLIC_STRATEGIES='[{"id":"enzyme-polygon-matic-eth-usdc","name":"ETH-MATIC-USDC momentum","url":"https://enzyme-polygon-matic-eth-usdc.tradingstrategy.ai","frontpage":true},{"id":"enzyme-arbitrum-eth-btc-rsi","name":"ETH-BTC price surge (Arbitrum)","url":"https://enzyme-arbitrum-eth-btc-rsi.tradingstrategy.ai/","depositOnEnzyme":true,"frontpage":true},{"id":"enzyme-polygon-eth-rolling-ratio","name":"ETH/BTC rolling ratio","url":"https://enzyme-polygon-eth-rolling-ratio.tradingstrategy.ai/","frontpage":true},{"id":"enzyme-polygon-eth-btc-rsi","name":"ETH-BTC price surge","url":"https://enzyme-polygon-eth-btc-rsi.tradingstrategy.ai/","frontpage":true,"hiddenPositions":[4]},{"id":"enzyme-ethereum-btc-eth-stoch-rsi","name":"Stochastic ETH/BTC long","url":"https://enzyme-ethereum-btc-eth-stoch-rsi.tradingstrategy.ai","frontpage":true},{"id":"enzyme-polygon-eth-btc-usdc","name":"ETH-BTC-USDC momentum","url":"https://enzyme-polygon-eth-btc-usdc.tradingstrategy.ai","new_version_id":"enzyme-polygon-eth-btc-rsi","frontpage":true},{"id":"enzyme-polygon-matic-usdc","name":"MATIC breakout","url":"https://enzyme-polygon-matic-usdc.tradingstrategy.ai"},{"id":"enzyme-polygon-eth-breakout","name":"ETH breakout","url":"https://enzyme-polygon-eth-breakout.tradingstrategy.ai"},{"id":"enzyme-polygon-eth-usdc","name":"ETH Breakout bounce","url":"https://enzyme-polygon-eth-usdc.tradingstrategy.ai"},{"id":"enzyme-polygon-eth-usdc-sls","name":"ETH Balance snap","url":"https://enzyme-polygon-eth-usdc-sls.tradingstrategy.ai"},{"id":"polygon-eth-spot-short","name":"ETH mean reversion bounce","url":"https://polygon-eth-spot-short.tradingstrategy.ai"},{"id":"arbitrum-btc-breakout","name":"BTC Barrier Breach","url":"https://arbitrum-btc-breakout.tradingstrategy.ai"}]'
+TS_PUBLIC_STRATEGIES='[{"id":"enzyme-polygon-matic-eth-usdc","name":"ETH-MATIC-USDC momentum","url":"https://enzyme-polygon-matic-eth-usdc.tradingstrategy.ai","frontpage":true},{"id":"enzyme-arbitrum-eth-btc-rsi","name":"ETH-BTC price surge (Arbitrum)","url":"https://enzyme-arbitrum-eth-btc-rsi.tradingstrategy.ai/","frontpage":true},{"id":"enzyme-polygon-eth-rolling-ratio","name":"ETH/BTC rolling ratio","url":"https://enzyme-polygon-eth-rolling-ratio.tradingstrategy.ai/","frontpage":true},{"id":"enzyme-polygon-eth-btc-rsi","name":"ETH-BTC price surge","url":"https://enzyme-polygon-eth-btc-rsi.tradingstrategy.ai/","frontpage":true,"hiddenPositions":[4]},{"id":"enzyme-ethereum-btc-eth-stoch-rsi","name":"Stochastic ETH/BTC long","url":"https://enzyme-ethereum-btc-eth-stoch-rsi.tradingstrategy.ai","frontpage":true},{"id":"enzyme-polygon-eth-btc-usdc","name":"ETH-BTC-USDC momentum","url":"https://enzyme-polygon-eth-btc-usdc.tradingstrategy.ai","new_version_id":"enzyme-polygon-eth-btc-rsi","frontpage":true},{"id":"enzyme-polygon-matic-usdc","name":"MATIC breakout","url":"https://enzyme-polygon-matic-usdc.tradingstrategy.ai"},{"id":"enzyme-polygon-eth-breakout","name":"ETH breakout","url":"https://enzyme-polygon-eth-breakout.tradingstrategy.ai"},{"id":"enzyme-polygon-eth-usdc","name":"ETH Breakout bounce","url":"https://enzyme-polygon-eth-usdc.tradingstrategy.ai"},{"id":"enzyme-polygon-eth-usdc-sls","name":"ETH Balance snap","url":"https://enzyme-polygon-eth-usdc-sls.tradingstrategy.ai"},{"id":"polygon-eth-spot-short","name":"ETH mean reversion bounce","url":"https://polygon-eth-spot-short.tradingstrategy.ai"},{"id":"arbitrum-btc-breakout","name":"BTC Barrier Breach","url":"https://arbitrum-btc-breakout.tradingstrategy.ai"}]'
 TS_PUBLIC_GEO_BLOCK='{"strategies:view":["CU","IR","KP","RU","SY"],"strategies:deposit":["CU","IR","KP","RU","SY","US","UK"]}'
 # Uncomment to test chain maintenance error
 # TS_PUBLIC_CHAINS_UNDER_MAINTENANCE='{ "binance": "BNB Chain" }'

src/lib/eth-defi/helpers.ts

@@ -1,10 +1,9 @@
 import type { Abi, Log } from 'viem';
 import type { Config, GetBalanceParameters, GetBalanceReturnType } from '@wagmi/core';
 import { decodeEventLog, formatUnits, isAddressEqual, parseAbi, erc20Abi } from 'viem';
-import { readContract, readContracts } from '@wagmi/core';
+import { readContract, readContracts, simulateContract, writeContract } from '@wagmi/core';
 import comptrollerABI from '$lib/eth-defi/abi/enzyme/ComptrollerLib.json';
 import { formatNumber } from '$lib/helpers/formatters';
-import tosMap from '$lib/assets/tos/tos-map.json';
 
 /**
  * Extract events from transaction logs
@@ -119,38 +118,60 @@ export function getTokenLabel(symbol: string | undefined, address: Address) {
 }
 
 /**
- * Get a strategy denomination token balance for a given comptroller and address
+ * Get a strategy denomination token address for a given chain and comptroller
  */
-export async function getDenominationToken(
+export async function getDenominationAsset(
 	config: Config,
-	{ comptroller, address, chainId }: { comptroller: Address; address: Address; chainId?: number | undefined }
+	{ chainId, comptroller }: { chainId?: number; comptroller: Address }
 ) {
-	const token = (await readContract(config, {
+	return readContract(config, {
 		chainId,
 		address: comptroller,
 		abi: comptrollerABI,
 		functionName: 'getDenominationAsset'
-	})) as Address;
-
-	return getTokenBalance(config, { address, token, chainId });
+	}) as Promise<Address>;
 }
 
-export type TosInfo = {
-	fileName?: string;
-	acceptanceMessage?: string;
-};
+/**
+ * Get strategy denomination token info for a given chain and comptroller
+ */
+export async function getDenominationTokenInfo(
+	config: Config,
+	{ chainId, comptroller }: { chainId?: number; comptroller: Address }
+) {
+	const address = await getDenominationAsset(config, { chainId, comptroller });
+	return getTokenInfo(config, { chainId, address });
+}
 
 /**
- * Get Terms of Service info based on the mapping stored in: src/lib/assets/tos/tos-map.json
- *
- * The mapping is stored in the form: chainId -> address -> version -> TosInfo
- *
- * @param chainId - chainId of the strategy
- * @param address - Terms of Service contract address of the strategy
- * @param version - Terms of Service version
- *
+ * Get strategy denomination token balance for a given chain, comptroller and address
  */
-export function getTosInfo(chainId: number, address: string, version: number): TosInfo {
-	// @ts-ignore
-	return tosMap[chainId]?.[address]?.[version] ?? {};
+export async function getDenominationTokenBalance(
+	config: Config,
+	{ chainId, comptroller, address }: { chainId?: number; comptroller: Address; address: Address }
+) {
+	const token = await getDenominationAsset(config, { chainId, comptroller });
+	return getTokenBalance(config, { chainId, token, address });
+}
+
+type ApproveTokenTransferParams = {
+	chainId?: number;
+	address: Address;
+	sender: Address;
+	value: number | bigint;
+};
+
+export async function approveTokenTransfer(
+	config: Config,
+	{ chainId, address, sender, value }: ApproveTokenTransferParams
+) {
+	const { request } = await simulateContract(config, {
+		abi: erc20Abi,
+		chainId,
+		address,
+		functionName: 'approve',
+		args: [sender, BigInt(value)]
+	});
+
+	return writeContract(config, request);
 }

src/lib/trade-executor/helpers/tos.ts

@@ -0,0 +1,96 @@
+/**
+ * This module is used to map Terms of Service contracts and versions for each blockchain
+ * to corresponding ToS file versions and acceptance messages.
+ *
+ * The acceptance message is needed to generate a hash and signature; we currently don't
+ * have a way to retrieve this directly from the blockchain, so it is made available via
+ * this local mapping.
+ */
+export type TosVersionParams = {
+	chainId: number;
+	address: Address;
+	version: number;
+};
+
+export type TosVersion = TosVersionParams & {
+	fileName?: string;
+	acceptanceMessage?: string;
+};
+
+const tosVersions: TosVersion[] = [
+	// Etherium versions
+	{
+		chainId: 1,
+		address: '0xd63c1bE9D8B56CCcD6fd2Dd9F9c030c6a9916f5F',
+		version: 1,
+		fileName: '2024-03-20.txt',
+		acceptanceMessage:
+			'I agree on Terms of Service. I understand smart contract trading is risky and I may lose all of my deposits. \n\nThis Terms of Service version 1, dated 2024-03-20, was published at https://tradingstrategy.ai/tos/2024-03-20.txt'
+	},
+
+	// Polygon versions
+	{
+		chainId: 137,
+		address: '0xbe1418df0bAd87577de1A41385F19c6e77312780',
+		version: 1,
+		fileName: '155d6737cb.txt',
+		acceptanceMessage:
+			'I read and agree on terms of service (version 1) to use\nsmart contract software deployed on a blockchain.   \n\nThe terms of service text was published 10.1.2024 at https://example.com.\nThe unique identifier hash for this terms of service text was 0x0000000000000000000000000000000000000000.'
+	},
+	{
+		chainId: 137,
+		address: '0xbe1418df0bAd87577de1A41385F19c6e77312780',
+		version: 2,
+		fileName: '2024-03-20.txt',
+		acceptanceMessage:
+			'I read and agree on Terms of Service to access the\\nsmart contract software deployed on a blockchain.\\n\\nThe Terms of Service version 2, dated 2024-03-20, was published at \\nhttps://tradingstrategy.ai/tos/2024-03-20.txt'
+	},
+	{
+		chainId: 137,
+		address: '0xbe1418df0bAd87577de1A41385F19c6e77312780',
+		version: 3,
+		fileName: '2024-03-20.txt',
+		acceptanceMessage:
+			'I read and agree on Terms of Service to access the\nsmart contract software deployed on a blockchain.\n\nThe Terms of Service version 3, dated 2024-03-20, was published at \nhttps://tradingstrategy.ai/tos/2024-03-20.txt'
+	},
+	{
+		chainId: 137,
+		address: '0xbe1418df0bAd87577de1A41385F19c6e77312780',
+		version: 4,
+		fileName: '2024-03-30.txt',
+		acceptanceMessage: '<failed>'
+	},
+	{
+		chainId: 137,
+		address: '0xbe1418df0bAd87577de1A41385F19c6e77312780',
+		version: 5,
+		fileName: '2024-03-30.txt',
+		acceptanceMessage:
+			'I agree on Terms of Service. I understand smart contract trading is risky and I may lose all of my deposits. \n\nThis Terms of Service version 5, dated 2024-03-30, was published at https://tradingstrategy.ai/tos/2024-03-30.txt'
+	},
+
+	// Arbitrum versions
+	{
+		chainId: 42161,
+		address: '0xDCD7C644a6AA72eb2f86781175b18ADc30Aa4f4d',
+		version: 1,
+		fileName: '2024-03-20.txt',
+		acceptanceMessage:
+			'I agree on Terms of Service. I understand smart contract trading is risky and I may lose all of my deposits. \n\nThis Terms of Service version 1, dated 2024-03-20, was published at https://tradingstrategy.ai/tos/2024-03-20.txt'
+	}
+];
+
+/**
+ * Get Terms of Service version info for a given chain, address and version
+ *
+ * @param chainId - chainId of the strategy
+ * @param address - Terms of Service contract address of the strategy
+ * @param version - Terms of Service version
+ *
+ */
+export function getTosVersion(params: TosVersionParams): TosVersion {
+	const tosVersion = tosVersions.find((tos) => {
+		return (['chainId', 'address', 'version'] as const).every((key) => tos[key] === params[key]);
+	});
+	return { ...params, ...tosVersion };
+}

src/lib/trade-executor/strategy/summary.ts

@@ -24,23 +24,18 @@ import { keyMetricSchema } from '../statistics/key-metric';
 export const assetManagementMode = z.enum(['hot_wallet', 'enzyme']);
 
 export const enzymeSmartContractsSchema = z.object({
-	vault: hexString.nullish(),
-	comptroller: hexString.nullish(),
-	generic_adapter: hexString.nullish(),
-	gas_relay_paymaster_lib: hexString.nullish(),
-	gas_relay_paymaster_factory: hexString.nullish(),
-	integration_manager: hexString.nullish(),
-	fund_value_calculator: hexString.nullish(),
-	payment_forwarder: hexString.nullish(),
-	guard: hexString.nullish(),
+	vault: hexString,
+	comptroller: hexString,
+	fund_value_calculator: hexString,
+	payment_forwarder: hexString,
 	terms_of_service: hexString.nullish()
 });
 export type EnzymeSmartContracts = z.infer<typeof enzymeSmartContractsSchema>;
 
 export const onChainDataSchema = z.object({
 	chain_id: chainId.nullish(),
 	asset_management_mode: assetManagementMode,
-	smart_contracts: enzymeSmartContractsSchema,
+	smart_contracts: enzymeSmartContractsSchema.partial(),
 	owner: hexString.nullish(),
 	trade_executor_hot_wallet: hexString.nullish()
 });

src/lib/wallet/VaultBalance.svelte

@@ -18,7 +18,7 @@
 	const value = fetchVaultNetValue(address);
 
 	async function fetchVaultShares(address: Address) {
-		const vaultShares = await getTokenBalance(config, { token: contracts.vault!, address });
+		const vaultShares = await getTokenBalance(config, { token: contracts.vault, address });
 		dispatch('dataFetch', { vaultShares });
 		return vaultShares;
 	}

src/routes/wizard/connect-wallet/balance/+page.ts

@@ -3,16 +3,19 @@ import { get } from 'svelte/store';
 import { wizard } from 'wizard/store';
 import { type ConfiguredChainId, config } from '$lib/wallet';
 import { getAccount, getBalance } from '@wagmi/core';
-import { type GetTokenBalanceReturnType, getDenominationToken } from '$lib/eth-defi/helpers';
+import { type GetTokenBalanceReturnType, getDenominationTokenBalance } from '$lib/eth-defi/helpers';
 
 export async function load() {
 	const { address } = getAccount(config) as { address: Address };
-	const { chainId, contracts } = get(wizard).data! as { chainId: ConfiguredChainId; contracts: EnzymeSmartContracts };
+	const { chainId, contracts } = get(wizard).data! as {
+		chainId: ConfiguredChainId;
+		contracts: Partial<EnzymeSmartContracts>;
+	};
 	const { comptroller } = contracts;
 
 	let denominationToken: Promise<GetTokenBalanceReturnType> | undefined = undefined;
 	if (comptroller) {
-		denominationToken = getDenominationToken(config, { address, comptroller, chainId });
+		denominationToken = getDenominationTokenBalance(config, { address, comptroller, chainId });
 	}
 
 	return {

src/routes/wizard/deposit/+layout.ts

@@ -1,7 +1,21 @@
 import type { EnzymeSmartContracts } from 'trade-executor/strategy/summary';
+import { type ConfiguredChainId, config } from '$lib/wallet';
 import { get } from 'svelte/store';
 import { wizard } from 'wizard/store';
 import { assertNotGeoBlocked } from '$lib/helpers/geo';
+import { type TokenInfo, type GetTokenBalanceReturnType, getDenominationTokenInfo } from '$lib/eth-defi/helpers';
+
+export type DepositWizardData = {
+	chainId: ConfiguredChainId;
+	strategyName: string;
+	contracts: EnzymeSmartContracts;
+	canForwardPayment: boolean;
+	denominationTokenInfo: TokenInfo;
+	denominationToken?: GetTokenBalanceReturnType;
+	nativeCurrency?: GetTokenBalanceReturnType;
+	tosSignature?: Address | '';
+	tosHash?: Address;
+};
 
 export async function load({ parent }) {
 	const { admin, ipCountry } = await parent();
@@ -18,11 +32,21 @@ export async function load({ parent }) {
 		{ slug: 'success', label: 'Success' }
 	];
 
+	const { chainId, contracts } = get(wizard).data as DepositWizardData;
+	const { comptroller, terms_of_service } = contracts;
+
 	// skip "Terms of service" step if no terms_of_service contract
-	const contracts: EnzymeSmartContracts = get(wizard).data!.contracts;
-	if (!contracts.terms_of_service) {
+	if (!terms_of_service) {
 		steps = steps.filter(({ slug }) => slug !== 'tos');
 	}
 
+	// get denomination token info
+	const denominationTokenInfo = await getDenominationTokenInfo(config, { chainId, comptroller });
+
+	// USDC can forward payment using transferWithAuthorizations; other tokens can't (yet)
+	const canForwardPayment = denominationTokenInfo.symbol === 'USDC';
+
+	wizard.updateData({ denominationTokenInfo, canForwardPayment });
+
 	return { title, steps };
 }