From 7c6c1e1028f0a29fdef406cd471511a151696317 Mon Sep 17 00:00:00 2001 From: SeoyeonKim Date: Mon, 15 Jun 2026 21:28:14 +0900 Subject: [PATCH] fix: block unsupported EURC to USDC swaps --- package-lock.json | 519 +++++++++++++++++++++++++++++ package.json | 2 + src/app/(app)/dashboard/actions.ts | 13 +- src/components/swap/swap-panel.tsx | 21 +- src/lib/appkit/swap.ts | 14 +- src/lib/fx.test.ts | 20 ++ src/lib/fx.ts | 8 + 7 files changed, 592 insertions(+), 5 deletions(-) create mode 100644 src/lib/fx.test.ts diff --git a/package-lock.json b/package-lock.json index ed6e29a..862f057 100644 --- a/package-lock.json +++ b/package-lock.json @@ -36,6 +36,7 @@ "eslint-config-next": "16.2.4", "supabase": "^2.95.5", "tailwindcss": "^4", + "tsx": "^4.22.4", "typescript": "^5" } }, @@ -2019,6 +2020,448 @@ "tslib": "^2.4.0" } }, + "node_modules/@esbuild/aix-ppc64": { + "version": "0.28.1", + "resolved": "https://registry.npmjs.org/@esbuild/aix-ppc64/-/aix-ppc64-0.28.1.tgz", + "integrity": 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a/package.json b/package.json index fdc97ea..b879f9d 100644 --- a/package.json +++ b/package.json @@ -5,6 +5,7 @@ "scripts": { "dev": "next dev", "build": "next build", + "test": "tsx --test src/lib/*.test.ts", "start": "next start", "lint": "eslint", "db:start": "supabase start", @@ -42,6 +43,7 @@ "eslint-config-next": "16.2.4", "supabase": "^2.95.5", "tailwindcss": "^4", + "tsx": "^4.22.4", "typescript": "^5" } } diff --git a/src/app/(app)/dashboard/actions.ts b/src/app/(app)/dashboard/actions.ts index c397517..98cc3eb 100644 --- a/src/app/(app)/dashboard/actions.ts +++ b/src/app/(app)/dashboard/actions.ts @@ -6,7 +6,12 @@ import { z } from "zod"; import { estimateSwap, executeSwap } from "@/lib/appkit/swap"; import { getFxBalances } from "@/lib/circle/wallets"; import { serverEnv } from "@/lib/config"; -import { FX_TOKENS, type FxToken } from "@/lib/fx"; +import { + FX_TOKENS, + isSupportedSwapRoute, + unsupportedSwapRouteMessage, + type FxToken, +} from "@/lib/fx"; import { createAdminClient } from "@/lib/supabase/admin"; import { createClient } from "@/lib/supabase/server"; @@ -47,6 +52,9 @@ export async function quoteSwap(input: { if (!parsed.success) { return { ok: false, error: parsed.error.issues[0]?.message ?? "Invalid quote input" }; } + if (!isSupportedSwapRoute(parsed.data.from, parsed.data.to)) { + return { ok: false, error: unsupportedSwapRouteMessage(parsed.data.from, parsed.data.to) }; + } try { const { profile } = await getProfile(); const env = serverEnv(); @@ -96,6 +104,9 @@ export async function executeSwapAction(input: { console.error("[executeSwapAction] validation failed", parsed.error.issues); return { ok: false, error: parsed.error.issues[0]?.message ?? "Invalid input" }; } + if (!isSupportedSwapRoute(parsed.data.from, parsed.data.to)) { + return { ok: false, error: unsupportedSwapRouteMessage(parsed.data.from, parsed.data.to) }; + } let user; let profile; diff --git a/src/components/swap/swap-panel.tsx b/src/components/swap/swap-panel.tsx index 1372d48..7c5e196 100644 --- a/src/components/swap/swap-panel.tsx +++ b/src/components/swap/swap-panel.tsx @@ -30,9 +30,11 @@ import { applySlippageFloor, bpsToPercent, formatAmount, + isSupportedSwapRoute, isPositiveDecimal, otherToken, SLIPPAGE_PRESETS_BPS, + unsupportedSwapRouteMessage, type FxToken, } from "@/lib/fx"; import { createClient } from "@/lib/supabase/client"; @@ -67,6 +69,8 @@ export function SwapPanel({ userId, balances: initialBalances }: { userId: strin } const currentBalance = from === "USDC" ? balances.usdc : balances.eurc; + const routeSupported = isSupportedSwapRoute(from, to); + const unsupportedRouteError = routeSupported ? null : unsupportedSwapRouteMessage(from, to); if (isPositiveDecimal(amountIn) && Number(amountIn) > Number(currentBalance)) { setAmountIn(Number(currentBalance) > 0 ? currentBalance : ""); } @@ -99,7 +103,15 @@ export function SwapPanel({ userId, balances: initialBalances }: { userId: strin const handle = window.setTimeout(async () => { if (!isPositiveDecimal(amountIn)) { if (id === requestId.current) { - setQuote(null); + setQuote(unsupportedRouteError ? { ok: false, error: unsupportedRouteError } : null); + setQuoting(false); + } + return; + } + if (unsupportedRouteError) { + if (id === requestId.current) { + setQuote({ ok: false, error: unsupportedRouteError }); + setMinOut(""); setQuoting(false); } return; @@ -114,7 +126,7 @@ export function SwapPanel({ userId, balances: initialBalances }: { userId: strin } }, 350); return () => window.clearTimeout(handle); - }, [amountIn, from, to, slippageBps, minOutTouched]); + }, [amountIn, from, to, slippageBps, minOutTouched, unsupportedRouteError]); const insufficient = useMemo(() => { if (!isPositiveDecimal(amountIn)) return false; @@ -123,6 +135,7 @@ export function SwapPanel({ userId, balances: initialBalances }: { userId: strin const canExecute = quote?.ok && + routeSupported && isPositiveDecimal(amountIn) && !insufficient && !quoting && @@ -335,7 +348,9 @@ export function SwapPanel({ userId, balances: initialBalances }: { userId: strin disabled={!canExecute} onClick={() => setOpen(true)} > - {executing + {!routeSupported + ? "Route unavailable" + : executing ? "Executing…" : Number(balanceFor(from)) === 0 ? `Get ${from} from the faucet` diff --git a/src/lib/appkit/swap.ts b/src/lib/appkit/swap.ts index 84420bc..3050b60 100644 --- a/src/lib/appkit/swap.ts +++ b/src/lib/appkit/swap.ts @@ -4,7 +4,11 @@ import { AppKit, SwapChain } from "@circle-fin/app-kit"; import { createCircleWalletsAdapter } from "@circle-fin/adapter-circle-wallets"; import { clientEnv, serverEnv } from "@/lib/config"; -import type { FxToken } from "@/lib/fx"; +import { + isSupportedSwapRoute, + unsupportedSwapRouteMessage, + type FxToken, +} from "@/lib/fx"; let cachedKit: AppKit | null = null; let cachedAdapter: ReturnType | null = null; @@ -54,6 +58,10 @@ export async function estimateSwap({ tokenOut, amountIn, }: QuoteInput): Promise { + if (!isSupportedSwapRoute(tokenIn, tokenOut)) { + throw new Error(unsupportedSwapRouteMessage(tokenIn, tokenOut)); + } + const env = serverEnv(); const result = await kit().estimateSwap({ from: { adapter: adapter(), chain: chain(), address: walletAddress }, @@ -89,6 +97,10 @@ export async function executeSwap({ slippageBps, stopLimit, }: ExecuteInput): Promise { + if (!isSupportedSwapRoute(tokenIn, tokenOut)) { + throw new Error(unsupportedSwapRouteMessage(tokenIn, tokenOut)); + } + const env = serverEnv(); const baseConfig = { kitKey: env.KIT_KEY, diff --git a/src/lib/fx.test.ts b/src/lib/fx.test.ts new file mode 100644 index 0000000..4932296 --- /dev/null +++ b/src/lib/fx.test.ts @@ -0,0 +1,20 @@ +import assert from "node:assert/strict"; +import test from "node:test"; + +import { + isSupportedSwapRoute, + unsupportedSwapRouteMessage, +} from "./fx"; + +test("USDC to EURC is a supported Arc Testnet swap route", () => { + assert.equal(isSupportedSwapRoute("USDC", "EURC"), true); +}); + +test("EURC to USDC is blocked before calling Circle AppKit", () => { + assert.equal(isSupportedSwapRoute("EURC", "USDC"), false); +}); + +test("unsupported route message explains the unavailable direction", () => { + assert.match(unsupportedSwapRouteMessage("EURC", "USDC"), /EURC .* USDC/); + assert.match(unsupportedSwapRouteMessage("EURC", "USDC"), /not available/i); +}); diff --git a/src/lib/fx.ts b/src/lib/fx.ts index 1fff380..a404f8b 100644 --- a/src/lib/fx.ts +++ b/src/lib/fx.ts @@ -12,6 +12,14 @@ export function otherToken(t: FxToken): FxToken { return t === "USDC" ? "EURC" : "USDC"; } +export function isSupportedSwapRoute(from: FxToken, to: FxToken): boolean { + return from === "USDC" && to === "EURC"; +} + +export function unsupportedSwapRouteMessage(from: FxToken, to: FxToken): string { + return `${from} → ${to} swaps are not available on Arc Testnet yet. Try USDC → EURC instead.`; +} + export function bpsToPercent(bps: number) { return bps / 100; }