feat(usage): add token usage service and IPC router endpoints

src/server/modules/usage/token-usage.service.ts

@@ -0,0 +1,29 @@
+import { Injectable } from '@nestjs/common';
+import { TokenUsageRepo, RecordUsageParams } from '../../../ipc/database/usageHandler';
+
+@Injectable()
+export class TokenUsageService {
+  recordUsage(params: RecordUsageParams): void {
+    TokenUsageRepo.recordUsage(params);
+  }
+
+  getUsageByHour(accountId?: string, start?: number, end?: number) {
+    return TokenUsageRepo.getUsageByHour(accountId, start, end);
+  }
+
+  getUsageByDay(accountId?: string, start?: number, end?: number) {
+    return TokenUsageRepo.getUsageByDay(accountId, start, end);
+  }
+
+  getUsageByWeek(accountId?: string, start?: number, end?: number) {
+    return TokenUsageRepo.getUsageByWeek(accountId, start, end);
+  }
+
+  getUsageByMonth(accountId?: string, start?: number, end?: number) {
+    return TokenUsageRepo.getUsageByMonth(accountId, start, end);
+  }
+
+  getUsageByModel(accountId?: string, start?: number, end?: number) {
+    return TokenUsageRepo.getUsageByModel(accountId, start, end);
+  }
+}