feat: 接入公开币种目录并统一多币种金额与语言初始化处理

src/lib/money.ts

@@ -2,20 +2,40 @@
  * 与后端约定：金额存最小货币单位（如 NPR 2 位小数 → 分）；展示时除以 10^decimals。
  */
 
+import { usePlayerSessionStore } from "@/stores/player-session-store";
+
 const DEFAULT_DECIMAL_PLACES = 2;
 
+export function getCurrencyDecimalPlaces(currencyCode: string): number {
+  const code = currencyCode.trim().toUpperCase();
+  const row = usePlayerSessionStore
+    .getState()
+    .currencies.find((item) => item.code === code);
+
+  const decimals = row?.decimal_places;
+  if (typeof decimals === "number" && Number.isFinite(decimals) && decimals >= 0) {
+    return decimals;
+  }
+
+  return DEFAULT_DECIMAL_PLACES;
+}
+
 export function formatMinorAsCurrency(
   minor: number | string,
   currencyCode: string,
-  decimalPlaces = DEFAULT_DECIMAL_PLACES,
+  decimalPlaces?: number,
 ): string {
+  const resolvedDecimalPlaces =
+    typeof decimalPlaces === "number" && Number.isFinite(decimalPlaces) && decimalPlaces >= 0
+      ? decimalPlaces
+      : getCurrencyDecimalPlaces(currencyCode);
   const n = typeof minor === "string" ? Number(minor) : minor;
   if (!Number.isFinite(n)) return `${currencyCode} —`;
-  const divisor = 10 ** decimalPlaces;
+  const divisor = 10 ** resolvedDecimalPlaces;
   const major = n / divisor;
   return `${currencyCode} ${major.toLocaleString(undefined, {
-    minimumFractionDigits: decimalPlaces,
-    maximumFractionDigits: decimalPlaces,
+    minimumFractionDigits: resolvedDecimalPlaces,
+    maximumFractionDigits: resolvedDecimalPlaces,
   })}`;
 }
 
@@ -24,13 +44,22 @@ export function formatMinorAsCurrency(
  */
 export function parseDecimalInputToMinor(
   raw: string,
-  decimalPlaces = DEFAULT_DECIMAL_PLACES,
+  decimalPlacesOrCurrencyCode?: number | string,
 ): number | null {
+  const decimalPlaces =
+    typeof decimalPlacesOrCurrencyCode === "string"
+      ? getCurrencyDecimalPlaces(decimalPlacesOrCurrencyCode)
+      : typeof decimalPlacesOrCurrencyCode === "number" &&
+          Number.isFinite(decimalPlacesOrCurrencyCode) &&
+          decimalPlacesOrCurrencyCode >= 0
+        ? decimalPlacesOrCurrencyCode
+      : decimalPlacesOrCurrencyCode;
+  const resolvedDecimalPlaces = decimalPlaces ?? DEFAULT_DECIMAL_PLACES;
   const cleaned = raw.replace(/,/g, "").trim();
   if (cleaned === "") return null;
   const n = Number(cleaned);
   if (!Number.isFinite(n) || n < 0) return null;
-  const factor = 10 ** decimalPlaces;
+  const factor = 10 ** resolvedDecimalPlaces;
   const minor = Math.round(n * factor);
   if (!Number.isSafeInteger(minor)) return null;
   return minor;