add crone to update food availble stock

src/modules/foods/crone/food.crone.ts

@@ -0,0 +1,45 @@
+import { Injectable, Logger } from '@nestjs/common';
+import { Cron } from '@nestjs/schedule';
+import { EntityManager } from '@mikro-orm/postgresql';
+import { Inventory } from '../../inventory/entities/inventory.entity';
+
+@Injectable()
+export class FoodStockCrone {
+  private readonly logger = new Logger(FoodStockCrone.name);
+
+  constructor(private readonly em: EntityManager) {}
+
+  // run every day at 00:03
+  @Cron('3 0 * * *', {
+    name: 'resetAvailableStock',
+    timeZone: 'UTC',
+  })
+  async handleCron() {
+    try {
+      this.logger.debug('Starting daily inventory reset (availableStock = totalStock)');
+
+      const inventories = await this.em.find(Inventory, {});
+      if (!inventories || inventories.length === 0) {
+        this.logger.debug('No inventory records found to reset');
+        return;
+      }
+
+      this.logger.log(`Resetting available stock for ${inventories.length} inventory records`);
+
+      await this.em.transactional(async em => {
+        for (const inv of inventories) {
+          // reload inside transaction to avoid concurrency issues
+          const record = await em.findOne(Inventory, { id: inv.id });
+          if (!record) continue;
+          record.availableStock = record.totalStock;
+          em.persist(record);
+        }
+        await em.flush();
+      });
+
+      this.logger.log('Daily inventory reset completed');
+    } catch (err) {
+      this.logger.error(`FoodStockCrone failed: ${err?.message}`, err);
+    }
+  }
+}

src/modules/foods/food.module.ts

@@ -1,5 +1,6 @@
 import { Module } from '@nestjs/common';
 import { FoodService } from './providers/food.service';
+import { FoodStockCrone } from './crone/food.crone';
 import { FoodController } from './controllers/food.controller';
 import { CategoryController } from './controllers/category.controller';
 import { CategoryService } from './providers/category.service';
@@ -15,9 +16,15 @@ import { UtilsModule } from '../utils/utils.module';
 import { Favorite } from './entities/favorite.entity';
 
 @Module({
-  imports: [MikroOrmModule.forFeature([Food, Category, Favorite]), RestaurantsModule, AuthModule, JwtModule, UtilsModule],
+  imports: [
+    MikroOrmModule.forFeature([Food, Category, Favorite]),
+    RestaurantsModule,
+    AuthModule,
+    JwtModule,
+    UtilsModule,
+  ],
   controllers: [FoodController, CategoryController],
-  providers: [FoodService, CategoryService, FoodRepository, CategoryRepository],
+  providers: [FoodService, CategoryService, FoodRepository, CategoryRepository, FoodStockCrone],
   exports: [FoodRepository, CategoryRepository],
 })
-export class FoodModule { }
+export class FoodModule {}