feat(donehub): add user self endpoint handling and balance calculation logic

src/server/services/platforms/doneHub.ts

@@ -1,5 +1,5 @@
 import { OneHubAdapter } from './oneHub.js';
-import type { CheckinResult } from './base.js';
+import type { BalanceInfo, CheckinResult } from './base.js';
 
 export class DoneHubAdapter extends OneHubAdapter {
   readonly platformName: string = 'done-hub';
@@ -15,6 +15,23 @@ export class DoneHubAdapter extends OneHubAdapter {
     return { success: false, message: 'checkin endpoint not found' };
   }
 
+  // DoneHub reports `quota` as remaining balance and `used_quota` as spent amount.
+  // Sum them to get the total quota instead of subtracting used from quota.
+  override async getBalance(baseUrl: string, accessToken: string): Promise<BalanceInfo> {
+    const res = await this.fetchJson<any>(`${baseUrl}/api/user/self`, {
+      headers: { Authorization: `Bearer ${accessToken}` },
+    });
+    const data = res?.data ?? res;
+    const quotaRemaining = (data?.quota || 0) / 500000;
+    const used = (data?.used_quota || 0) / 500000;
+    const total = quotaRemaining + used;
+    const todayIncome = Number.isFinite(data?.today_income) ? (data.today_income / 500000) : undefined;
+    const todayQuotaConsumption = Number.isFinite(data?.today_quota_consumption)
+      ? (data.today_quota_consumption / 500000)
+      : undefined;
+    return { balance: quotaRemaining, used, quota: total, todayIncome, todayQuotaConsumption };
+  }
+
   // getModels is inherited from OneHubAdapter which already has /api/available_model fallback.
   // No need to override here — OneHub's implementation handles this correctly.
 }