feat: implement the post transfer account balance endpoint on server

apps/api/src/app/account/account.controller.ts

@@ -30,6 +30,8 @@ import { StatusCodes, getReasonPhrase } from 'http-status-codes';
 import { AccountService } from './account.service';
 import { CreateAccountDto } from './create-account.dto';
 import { UpdateAccountDto } from './update-account.dto';
+import { TransferBalanceDto } from './transfer-balance.dto';
+import { resetHours } from '@ghostfolio/common/helper';
 
 @Controller('account')
 export class AccountController {
@@ -154,6 +156,43 @@ export class AccountController {
     }
   }
 
+  @Post('transfer-balance')
+  @UseGuards(AuthGuard('jwt'))
+  public async transferAccountBalance(@Body() {
+    accountIdFrom,
+    accountIdTo,
+    balance
+  }: TransferBalanceDto) {
+    if (
+      !hasPermission(this.request.user.permissions, permissions.updateAccount)
+    ) {
+      throw new HttpException(
+        getReasonPhrase(StatusCodes.FORBIDDEN),
+        StatusCodes.FORBIDDEN
+      );
+    }
+
+    const today = resetHours(new Date());
+    const userCurrency = this.request.user.Settings.settings.baseCurrency;
+
+    await this.accountService.updateAccountBalance({
+      accountId: accountIdFrom,
+      amount: balance,
+      currency: userCurrency,
+      date: today,
+      userId: this.request.user.id
+    });
+
+    await this.accountService.updateAccountBalance({
+      accountId: accountIdTo,
+      amount: balance,
+      currency: userCurrency,
+      date: today,
+      userId: this.request.user.id
+    });
+  }
+
+
   @Put(':id')
   @UseGuards(AuthGuard('jwt'))
   public async update(@Param('id') id: string, @Body() data: UpdateAccountDto) {