Fix database connection error handling

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

@@ -1,6 +1,20 @@
+import { ExchangeRateDataService } from '@ghostfolio/api/services/exchange-rate-data.service';
+import { PrismaService } from '@ghostfolio/api/services/prisma.service';
 import { Controller } from '@nestjs/common';
 
 @Controller()
 export class AppController {
-  public constructor() {}
+  public constructor(
+    private readonly exchangeRateDataService: ExchangeRateDataService,
+    private readonly prismaService: PrismaService
+  ) {
+    this.initialize();
+  }
+
+  private async initialize() {
+    try {
+      await this.prismaService.$connect();
+      await this.exchangeRateDataService.initialize();
+    } catch {}
+  }
 }

apps/api/src/app/order/order.service.ts

@@ -21,7 +21,7 @@ import {
 } from '@prisma/client';
 import Big from 'big.js';
 import { endOfToday, isAfter } from 'date-fns';
-import { groupBy, isString } from 'lodash';
+import { groupBy } from 'lodash';
 import { v4 as uuidv4 } from 'uuid';
 
 import { Activity } from './interfaces/activities.interface';

apps/api/src/services/exchange-rate-data.service.ts

@@ -22,9 +22,7 @@ export class ExchangeRateDataService {
     private readonly dataProviderService: DataProviderService,
     private readonly prismaService: PrismaService,
     private readonly propertyService: PropertyService
-  ) {
-    this.initialize();
-  }
+  ) {}
 
   public getCurrencies() {
     return this.currencies?.length > 0 ? this.currencies : [this.baseCurrency];

apps/api/src/services/prisma.service.ts

@@ -1,15 +1,25 @@
-import { Injectable, OnModuleDestroy, OnModuleInit } from '@nestjs/common';
+import {
+  Injectable,
+  Logger,
+  OnModuleDestroy,
+  OnModuleInit
+} from '@nestjs/common';
 import { PrismaClient } from '@prisma/client';
 
 @Injectable()
 export class PrismaService
   extends PrismaClient
-  implements OnModuleInit, OnModuleDestroy {
-  async onModuleInit() {
-    await this.$connect();
+  implements OnModuleInit, OnModuleDestroy
+{
+  public async onModuleInit() {
+    try {
+      await this.$connect();
+    } catch (error) {
+      Logger.error(error, 'PrismaService');
+    }
   }
 
-  async onModuleDestroy() {
+  public async onModuleDestroy() {
     await this.$disconnect();
   }
 }