fix(ui): 修复价格尾零、增加币种下拉框，并重构持仓引擎实现原币种/本位币双轨制盈亏计算

src/actions/portfolio.ts

@@ -14,6 +14,8 @@ interface Position {
   cnyValue: string;
   totalCostCny: string;
   pnlCny: string;
+  totalCostNative: string;
+  pnlNative: string;
 }
 
 interface RawRate {
@@ -95,6 +97,7 @@ export async function getPortfolioPositions(): Promise<Position[]> {
     baseCurrency: string;
     latestPrice: string;
     totalCostCny: Big;
+    totalCostNative: Big;
   }>();
 
   for (const tx of allTransactions) {
@@ -110,6 +113,7 @@ export async function getPortfolioPositions(): Promise<Position[]> {
         baseCurrency: tx.assetBaseCurrency || '',
         latestPrice: tx.assetLatestPrice || '0',
         totalCostCny: new Big('0'),
+        totalCostNative: new Big('0'),
       });
     }
 
@@ -118,10 +122,15 @@ export async function getPortfolioPositions(): Promise<Position[]> {
     if (tx.txType === 'BUY') {
       holding.quantity = holding.quantity.plus(new Big(tx.quantity));
       const costPerUnit = new Big(tx.quantity).times(new Big(tx.price));
+      holding.totalCostNative = holding.totalCostNative.plus(costPerUnit);
       const costCny = costPerUnit.times(new Big(tx.exchangeRate || '1'));
       holding.totalCostCny = holding.totalCostCny.plus(costCny);
     } else if (tx.txType === 'SELL') {
       holding.quantity = holding.quantity.minus(new Big(tx.quantity));
+      const sellCostPerUnit = new Big(tx.quantity).times(new Big(tx.price));
+      holding.totalCostNative = holding.totalCostNative.minus(sellCostPerUnit);
+      const sellCostCny = sellCostPerUnit.times(new Big(tx.exchangeRate || '1'));
+      holding.totalCostCny = holding.totalCostCny.minus(sellCostCny);
     } else if (tx.txType === 'AIRDROP') {
       holding.quantity = holding.quantity.plus(new Big(tx.quantity));
     } else if (tx.txType === 'DIVIDEND') {
@@ -160,6 +169,9 @@ export async function getPortfolioPositions(): Promise<Position[]> {
     const pnlCny = cnyValue.minus(holding.totalCostCny);
     totalPnlCny = totalPnlCny.plus(pnlCny);
 
+    const currentNativeValue = new Big(holding.latestPrice).times(holding.quantity);
+    const pnlNative = currentNativeValue.minus(holding.totalCostNative);
+
     result.push({
       assetId: holding.assetId,
       symbol: holding.symbol,
@@ -169,6 +181,8 @@ export async function getPortfolioPositions(): Promise<Position[]> {
       cnyValue: cnyValue.toString(),
       totalCostCny: holding.totalCostCny.toString(),
       pnlCny: pnlCny.toString(),
+      totalCostNative: holding.totalCostNative.toString(),
+      pnlNative: pnlNative.toString(),
     });
   }
 

src/components/transactions/add-transaction-dialog.tsx

@@ -218,9 +218,18 @@ export function AddTransactionDialog({ assets }: AddTransactionDialogProps) {
                 render={({ field }) => (
                   <FormItem>
                     <FormLabel>交易币种</FormLabel>
-                    <FormControl>
-                      <Input placeholder="USD" type="text" {...field} />
-                    </FormControl>
+                    <Select onValueChange={field.onChange} defaultValue={field.value}>
+                      <FormControl>
+                        <SelectTrigger>
+                          <SelectValue placeholder="选择币种" />
+                        </SelectTrigger>
+                      </FormControl>
+                      <SelectContent>
+                        <SelectItem value="USD">USD</SelectItem>
+                        <SelectItem value="CNY">CNY</SelectItem>
+                        <SelectItem value="HKD">HKD</SelectItem>
+                      </SelectContent>
+                    </Select>
                     <FormMessage />
                   </FormItem>
                 )}