init: 初始化 AssetX 项目仓库

包含 webapp（Next.js 用户端）、webapp-back（Go 后端）、
antdesign（管理后台）、landingpage（营销落地页）、
数据库 SQL 和配置文件。

webapp/components/lending/supply/WithdrawPanel.tsx

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+"use client";
+
+import { useState, useEffect, useRef } from "react";
+import Image from "next/image";
+import { Button } from "@heroui/react";
+import { useApp } from "@/contexts/AppContext";
+import { buttonStyles } from "@/lib/buttonStyles";
+import { useUSDCBalance } from '@/hooks/useBalance';
+import { useLendingWithdraw } from '@/hooks/useLendingWithdraw';
+import { useSuppliedBalance } from '@/hooks/useLendingSupply';
+import { getTxUrl } from '@/lib/contracts';
+import { useTokenDecimalsFromAddress } from '@/hooks/useTokenDecimals';
+import { useTokenBySymbol } from '@/hooks/useTokenBySymbol';
+import { useHealthFactor, useSupplyAPY, useBorrowBalance } from '@/hooks/useHealthFactor';
+import { toast } from 'sonner';
+import { useWalletStatus } from '@/hooks/useWalletStatus';
+
+export default function WithdrawPanel() {
+  const { t } = useApp();
+  const [amount, setAmount] = useState("");
+
+  // 使用统一的钱包状态 Hook
+  const { isConnected, mounted } = useWalletStatus();
+  const { formattedBalance: usdcBalance, isLoading: isBalanceLoading, refetch: refetchBalance } = useUSDCBalance();
+  const { formattedBalance: suppliedBalance, refetch: refetchSupplied } = useSuppliedBalance();
+  const {
+    status: withdrawStatus,
+    error: withdrawError,
+    isLoading: isWithdrawLoading,
+    withdrawHash,
+    executeWithdraw,
+    reset: resetWithdraw,
+  } = useLendingWithdraw();
+
+  // 健康因子和 APY
+  const {
+    formattedHealthFactor,
+    status: healthStatus,
+    utilization,
+    isLoading: isHealthLoading
+  } = useHealthFactor();
+  const { apy } = useSupplyAPY();
+  const { formattedBalance: borrowBalance } = useBorrowBalance();
+  const hasShownBorrowWarning = useRef(false);
+
+  // 从产品 API 获取 USDC token 信息，优先从合约地址读取精度
+  const usdcToken = useTokenBySymbol('USDC');
+  const usdcInputDecimals = useTokenDecimalsFromAddress(usdcToken?.contractAddress, usdcToken?.decimals ?? 18);
+  const usdcDisplayDecimals = Math.min(usdcInputDecimals, 6);
+  const truncateDecimals = (s: string, d: number) => { const p = s.split('.'); return p.length > 1 ? `${p[0]}.${p[1].slice(0, d)}` : s; };
+  const isValidAmount = (v: string) => v !== '' && !isNaN(parseFloat(v)) && parseFloat(v) > 0;
+
+  const handleAmountChange = (value: string) => {
+    if (value === '') { setAmount(value); return; }
+    if (!/^\d*\.?\d*$/.test(value)) return;
+    const parts = value.split('.');
+    if (parts.length > 1 && parts[1].length > usdcDisplayDecimals) return;
+    if (parseFloat(value) > parseFloat(suppliedBalance)) { setAmount(truncateDecimals(suppliedBalance, usdcDisplayDecimals)); return; }
+    setAmount(value);
+  };
+
+  // 有借款时，挂载后弹出一次提示
+  useEffect(() => {
+    if (!mounted || hasShownBorrowWarning.current) return;
+    if (parseFloat(borrowBalance) > 0) {
+      toast.warning(t("supply.toast.borrowWarning"), {
+        description: t("supply.toast.borrowWarningDesc"),
+        duration: 5000,
+      });
+      hasShownBorrowWarning.current = true;
+    }
+  }, [mounted, borrowBalance]);
+
+  const WITHDRAW_TOAST_ID = 'lending-withdraw-tx';
+
+  // Withdraw 交易提交
+  useEffect(() => {
+    if (withdrawHash && withdrawStatus === 'withdrawing') {
+      toast.loading(t("supply.toast.withdrawSubmitted"), {
+        id: WITHDRAW_TOAST_ID,
+        description: t("supply.toast.processingWithdrawal"),
+        action: {
+          label: t("supply.toast.viewTx"),
+          onClick: () => window.open(getTxUrl(withdrawHash), '_blank'),
+        },
+      });
+    }
+  }, [withdrawHash, withdrawStatus]);
+
+  // 成功后刷新余额
+  useEffect(() => {
+    if (withdrawStatus === 'success') {
+      toast.success(t("supply.toast.withdrawnSuccess"), {
+        id: WITHDRAW_TOAST_ID,
+        description: t("supply.toast.withdrawnSuccessDesc"),
+        duration: 5000,
+      });
+      refetchBalance();
+      refetchSupplied();
+      const timer = setTimeout(() => { resetWithdraw(); setAmount(''); }, 3000);
+      return () => clearTimeout(timer);
+    }
+  // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, [withdrawStatus]);
+
+  // 错误提示
+  useEffect(() => {
+    if (withdrawError) {
+      if (withdrawError === 'Transaction cancelled') {
+        toast.dismiss(WITHDRAW_TOAST_ID);
+      } else {
+        toast.error(t("supply.toast.withdrawFailed"), {
+          id: WITHDRAW_TOAST_ID,
+          duration: 5000,
+        });
+      }
+    }
+  }, [withdrawError]);
+
+  return (
+    <div className="p-6 flex flex-col gap-6 flex-1">
+      {/* Token Balance & Supplied */}
+      <div className="flex flex-col gap-4">
+        {/* Token Balance */}
+        <div className="bg-bg-subtle dark:bg-gray-700 rounded-xl border border-border-gray dark:border-gray-600 p-3 flex flex-col gap-1">
+          <span className="text-[10px] font-medium text-text-tertiary dark:text-gray-400 leading-[150%] tracking-[0.01em]">
+            {t("supply.tokenBalance")}
+          </span>
+          <div className="flex items-center justify-between">
+            <span className="text-body-large font-bold text-text-primary dark:text-white leading-[150%]">
+              {!mounted ? '0' : isBalanceLoading ? '...' : parseFloat(truncateDecimals(usdcBalance, usdcDisplayDecimals)).toLocaleString('en-US', { maximumFractionDigits: usdcDisplayDecimals })}
+            </span>
+            <span className="text-caption-tiny font-medium text-text-tertiary dark:text-gray-400 leading-[150%] tracking-[0.01em]">
+              USDC
+            </span>
+          </div>
+          <span className="text-[10px] font-medium text-text-tertiary dark:text-gray-400 leading-[150%] tracking-[0.01em]">
+            ${!mounted ? '0' : isBalanceLoading ? '...' : parseFloat(truncateDecimals(usdcBalance, usdcDisplayDecimals)).toLocaleString('en-US', { maximumFractionDigits: usdcDisplayDecimals })}
+          </span>
+        </div>
+
+        {/* Supplied */}
+        <div className="bg-bg-subtle dark:bg-gray-700 rounded-xl border border-border-gray dark:border-gray-600 p-3 flex flex-col gap-1">
+          <span className="text-[10px] font-medium text-text-tertiary dark:text-gray-400 leading-[150%] tracking-[0.01em]">
+            {t("supply.supplied")}
+          </span>
+          <div className="flex items-center justify-between">
+            <span className="text-body-large font-bold text-text-primary dark:text-white leading-[150%]">
+              {!mounted ? '0' : parseFloat(truncateDecimals(suppliedBalance, usdcDisplayDecimals)).toLocaleString('en-US', { maximumFractionDigits: usdcDisplayDecimals })}
+            </span>
+            <span className="text-caption-tiny font-medium text-text-tertiary dark:text-gray-400 leading-[150%] tracking-[0.01em]">
+              USDC
+            </span>
+          </div>
+          <span className="text-[10px] font-medium text-text-tertiary dark:text-gray-400 leading-[150%] tracking-[0.01em]">
+            ${!mounted ? '0' : parseFloat(truncateDecimals(suppliedBalance, usdcDisplayDecimals)).toLocaleString('en-US', { maximumFractionDigits: usdcDisplayDecimals })}
+          </span>
+        </div>
+      </div>
+
+      {/* Withdraw Section */}
+      <div className="bg-bg-subtle dark:bg-gray-700 rounded-xl border border-border-gray dark:border-gray-600 p-4 flex flex-col gap-4">
+        {/* Withdraw Label and Available */}
+        <div className="flex items-center gap-2">
+          <span className="text-caption-tiny font-medium text-text-secondary dark:text-gray-300 leading-[150%] tracking-[0.01em]">
+            {t("supply.withdraw")}
+          </span>
+          <div className="flex items-center gap-2 ml-auto">
+            <Image src="/icons/ui/wallet-icon.svg" alt="" width={12} height={12} />
+            <span className="text-caption-tiny font-medium text-text-secondary dark:text-gray-300 leading-[150%] tracking-[0.01em]">
+              {!mounted ? '0 USDC' : `${parseFloat(truncateDecimals(suppliedBalance, usdcDisplayDecimals)).toLocaleString('en-US', { maximumFractionDigits: usdcDisplayDecimals })} USDC`}
+            </span>
+          </div>
+          <Button
+            size="sm"
+            className={buttonStyles({ intent: "max" })}
+            onPress={() => setAmount(truncateDecimals(suppliedBalance, usdcDisplayDecimals))}
+          >
+            {t("supply.max")}
+          </Button>
+        </div>
+
+        {/* Input Row */}
+        <div className="flex items-center justify-between h-12">
+          {/* USDC Token Button */}
+          <div className="bg-bg-surface dark:bg-gray-800 rounded-full border border-border-normal dark:border-gray-600 p-2 flex items-center gap-2 h-12">
+            <Image
+              src="/assets/tokens/usd-coin-usdc-logo-10.svg"
+              alt="USDC"
+              width={32}
+              height={32}
+            />
+            <span className="text-body-default font-bold text-text-primary dark:text-white leading-[150%]">
+              USDC
+            </span>
+          </div>
+
+          {/* Amount Input */}
+          <div className="flex flex-col items-end">
+            <input
+              type="text" inputMode="decimal"
+              value={amount}
+              onChange={(e) => handleAmountChange(e.target.value)}
+              placeholder="0"
+              className="text-heading-h3 font-bold text-text-primary dark:text-white leading-[130%] tracking-[-0.005em] text-right bg-transparent outline-none w-24"
+            />
+            <span className="text-caption-tiny font-regular text-text-tertiary dark:text-gray-400 leading-[150%] tracking-[0.01em]">
+              {amount ? `≈ $${amount}` : "--"}
+            </span>
+          </div>
+        </div>
+      </div>
+
+      {/* Health Factor */}
+      <div className="flex flex-col gap-3">
+        <div className="flex items-center justify-between">
+          <div className="flex flex-col gap-1">
+            <span className="text-[10px] font-medium text-text-tertiary dark:text-gray-400 leading-[150%] tracking-[0.01em]">
+              {t("supply.healthFactor")}: {isHealthLoading ? '...' : formattedHealthFactor}
+            </span>
+            <span className="text-body-small font-bold text-text-primary dark:text-white leading-[150%]">
+              {utilization.toFixed(1)}% {t("supply.utilization")}
+            </span>
+          </div>
+          <span className={`text-caption-tiny font-bold leading-[150%] tracking-[0.01em] ${
+            healthStatus === 'safe' ? 'text-[#10b981] dark:text-green-400' :
+            healthStatus === 'warning' ? 'text-[#ffb933] dark:text-yellow-400' :
+            healthStatus === 'danger' ? 'text-[#ff6900] dark:text-orange-400' :
+            'text-[#ef4444] dark:text-red-400'
+          }`}>
+            {healthStatus === 'safe' ? t("supply.safe") :
+             healthStatus === 'warning' ? t("supply.warning") :
+             healthStatus === 'danger' ? t("supply.danger") :
+             t("supply.critical")}
+          </span>
+        </div>
+
+        {/* Progress Bar */}
+        <div className="relative w-full h-2.5 rounded-full overflow-hidden">
+          <div
+            className="absolute inset-0 opacity-30"
+            style={{
+              background: 'linear-gradient(90deg, #10b981 0%, #3b82f6 20%, #8b5cf6 40%, #ec4899 60%, #f59e0b 80%, #ef4444 100%)',
+            }}
+          />
+          <div
+            className="absolute left-0 top-0 h-full rounded-full transition-all duration-500 ease-out"
+            style={{
+              background: 'linear-gradient(90deg, #10b981 0%, #3b82f6 20%, #8b5cf6 40%, #ec4899 60%, #f59e0b 80%, #ef4444 100%)',
+              width: `${Math.min(utilization, 100)}%`,
+              boxShadow: utilization > 0 ? '0 0 8px rgba(59, 130, 246, 0.5)' : 'none',
+            }}
+          />
+        </div>
+      </div>
+
+      {/* Current APY */}
+      <div className="bg-bg-subtle dark:bg-gray-700 rounded-2xl p-4 flex flex-col gap-2">
+        <span className="text-body-small font-medium text-text-secondary dark:text-gray-300 leading-[150%]">
+          {t("supply.currentReturns")}
+        </span>
+        <div className="flex items-center justify-between">
+          <span className="text-body-small font-regular text-text-tertiary dark:text-gray-400 leading-[150%]">
+            {t("supply.supplyApy")}
+          </span>
+          <span className="text-body-small font-bold text-[#ff6900] dark:text-orange-400 leading-[150%]">
+            {apy > 0 ? `${apy.toFixed(2)}%` : '--'}
+          </span>
+        </div>
+        <div className="flex items-center justify-between">
+          <span className="text-body-small font-regular text-text-tertiary dark:text-gray-400 leading-[150%]">
+            {t("supply.yearlyEarnings")}
+          </span>
+          <span className="text-body-small font-bold text-[#10b981] dark:text-green-400 leading-[150%]">
+            {apy > 0 && parseFloat(suppliedBalance) > 0
+              ? `~ $${(parseFloat(suppliedBalance) * apy / 100).toFixed(2)}`
+              : '~ $0.00'}
+          </span>
+        </div>
+      </div>
+
+      {/* Withdraw Button */}
+      <Button
+        isDisabled={
+          !mounted ||
+          !isConnected ||
+          !isValidAmount(amount) ||
+          parseFloat(amount) > parseFloat(suppliedBalance) ||
+          isWithdrawLoading
+        }
+        className={`${buttonStyles({ intent: "theme" })} mt-auto`}
+        endContent={<Image src="/icons/actions/arrow-right-icon.svg" alt="" width={20} height={20} />}
+        onPress={() => {
+          if (amount && parseFloat(amount) > 0) {
+            resetWithdraw();
+            executeWithdraw(amount);
+          }
+        }}
+      >
+        {!mounted && t("common.loading")}
+        {mounted && !isConnected && t("common.connectWallet")}
+        {mounted && isConnected && !!amount && !isValidAmount(amount) && t("common.invalidAmount")}
+        {mounted && isConnected && isValidAmount(amount) && parseFloat(amount) > parseFloat(suppliedBalance) && t("supply.insufficientBalance")}
+        {mounted && isConnected && withdrawStatus === 'idle' && (!amount || isValidAmount(amount)) && parseFloat(amount) <= parseFloat(suppliedBalance) && t("supply.withdraw")}
+        {mounted && withdrawStatus === 'withdrawing' && t("supply.withdrawing")}
+        {mounted && withdrawStatus === 'success' && t("common.success")}
+        {mounted && withdrawStatus === 'error' && t("common.failed")}
+      </Button>
+    </div>
+  );
+}