dodany NBPExchangeService i wszystko wokół

dodać handling odpowiedzi

src/main/frontend/src/app/component/expense/settlement-dialog/settlement-dialog.component.html

@@ -3,10 +3,11 @@ <h2 mat-dialog-title>Rozliczenie dla grupy {{ data.group.groupName }}</h2>
   @if (data.debts) {
     <div>
       @for (settlement of data.debts | keyvalue; track settlement) {
-        <p> {{ settlement.key }} </p>
-        @if (settlement.key !== 'PLN') {
-          <mat-checkbox>przelicz do PLN</mat-checkbox>
-        }
+        <p> {{ settlement.key }}
+          @if (settlement.key !== 'PLN') {
+            <mat-checkbox (change)="calculate($event.checked)">przelicz do PLN</mat-checkbox>
+          }
+        </p>
         @for (debt of settlement.value; track debt) {
           <div>
             <b matTooltip="{{debt.from.mail}}">{{ debt.from.name }}</b>

src/main/frontend/src/app/component/expense/settlement-dialog/settlement-dialog.component.ts

@@ -13,6 +13,7 @@ import {MatTooltip} from '@angular/material/tooltip';
 import {JsonPipe, KeyValuePipe, NgFor, NgIf} from '@angular/common';
 import {Settlement} from "../../../model/settlement";
 import {MatCheckbox} from "@angular/material/checkbox";
+import {ExpenseService} from "../../../service/expense.service";
 
 @Component({
   selector: 'settlement-dialog',
@@ -24,6 +25,7 @@ import {MatCheckbox} from "@angular/material/checkbox";
 export class SettlementDialogComponent {
   constructor(
       public dialogRef: MatDialogRef<SettlementDialogComponent>,
+      public expenseService: ExpenseService,
       @Inject(MAT_DIALOG_DATA) public data: SettlementDialogData,
   ) {
     console.log(data)
@@ -41,6 +43,24 @@ export class SettlementDialogComponent {
   //   return debts.reduce((accumulator, curValue) => accumulator + curValue.amount, 0) > 0;
   // }   || calculateDebts(data.debts)
 
+  calculate(change: boolean) {
+    if (change) {
+      Object.keys(this.data.debts)
+        .filter(currency => currency !== this.data.group.defaultCurrency)
+        .forEach(currency => {
+          // Iterate over each transaction in the array for the current currency
+          this.data.debts[currency].forEach(transaction => {
+            console.log(`From: ${transaction.from.name}, To: ${transaction.to.name}, Amount: ${transaction.amount}`);
+            this.expenseService.recalculateForeignCurrency(transaction.amount, currency).subscribe(exchangeRate => {
+              transaction.amount = +Math.floor(exchangeRate).toFixed(2);
+              currency = this.data.group.defaultCurrency!;
+              console.log(`From: ${transaction.from.name}, To: ${transaction.to.name}, Amount: ${transaction.amount}`);
+            });
+          });
+        });
+
+    }
+  }
 }
 
 export interface SettlementDialogData {

src/main/frontend/src/app/service/expense.service.ts

@@ -43,4 +43,13 @@ export class ExpenseService {
   findById(expenseId: number) {
     return this.httpClient.get<Expense>(`${environment.API_URL}/expense/findById/${expenseId}`);
   }
+
+  recalculateForeignCurrency(amount: number, currency: string) {
+    return this.httpClient.get<number>(`${environment.API_URL}/expense/recalculateForeignCurrency`, {
+      params: {
+        amount,
+        currency
+      }
+    });
+  }
 }

src/main/java/pl/janis/komornik/dto/ExchangeRateResponse.java

@@ -0,0 +1,9 @@
+package pl.janis.komornik.dto;
+
+public record ExchangeRateResponse(
+        String table,
+        String currency,
+        String code,
+        Rate[] rates
+) {
+}

src/main/java/pl/janis/komornik/dto/Rate.java

@@ -0,0 +1,10 @@
+package pl.janis.komornik.dto;
+
+import java.math.BigDecimal;
+
+public record Rate(
+        String no,
+        String effectiveDate,
+        BigDecimal mid
+) {
+}

src/main/java/pl/janis/komornik/rest/ExpenseRestController.java

@@ -8,6 +8,7 @@
 import pl.janis.komornik.entities.User;
 import pl.janis.komornik.service.ExpenseService;
 
+import java.math.BigDecimal;
 import java.security.Principal;
 import java.util.List;
 import java.util.Map;
@@ -57,5 +58,11 @@ public void deleteExpense(@PathVariable int id) {
         expenseService.deleteExpense(id);
     }
 
-
+    @GetMapping("/recalculateForeignCurrency")
+    public BigDecimal recalculateForeignCurrency(@RequestParam BigDecimal amount, @RequestParam String currency) {
+        if (amount != null && currency != null) {
+            return expenseService.recalculateForeignCurrency(amount, currency);
+        }
+        return null;
+    }
 }

src/main/java/pl/janis/komornik/service/ExpenseService.java

@@ -28,6 +28,7 @@ public class ExpenseService {
     private final ExpenseMapper expenseMapper;
     private final UserService userService;
     private final GroupService groupService;
+    private final NBPExchangeService nbpExchangeService;
 
     public ExpenseDto findById(int id) {
         return expenseMapper.toDto(expenseRepository.findById(id).orElseThrow(() -> new ElementDoesNotExistException("No results")));
@@ -121,4 +122,8 @@ public ExpenseDto saveExpense(ExpenseDto expenseDto, User currentUser) {
         final Expense expense = expenseMapper.toEntity(expenseDto);
         return expenseMapper.toDto(expenseRepository.save(expense));
     }
+
+    public BigDecimal recalculateForeignCurrency(BigDecimal amount, String currency) {
+        return nbpExchangeService.getExchangeRate(amount, currency);
+    }
 }

src/main/java/pl/janis/komornik/service/NBPExchangeService.java

@@ -0,0 +1,25 @@
+package pl.janis.komornik.service;
+
+import org.springframework.stereotype.Service;
+import org.springframework.web.client.RestTemplate;
+import pl.janis.komornik.dto.ExchangeRateResponse;
+
+import java.math.BigDecimal;
+import java.time.LocalDate;
+import java.time.format.DateTimeFormatter;
+
+@Service
+public class NBPExchangeService {
+
+    public BigDecimal getExchangeRate(BigDecimal amount, String currency) {
+        LocalDate today = LocalDate.now();
+        String formattedDate = today.format(DateTimeFormatter.ISO_LOCAL_DATE);
+        String url = String.format("https://api.nbp.pl/api/exchangerates/rates/a/%s/%s/?format=json", currency, formattedDate);
+        RestTemplate restTemplate = new RestTemplate();
+        ExchangeRateResponse result = restTemplate.getForObject(url, ExchangeRateResponse.class);
+        if (result != null) {
+            return result.rates()[0].mid().multiply(amount);
+        }
+        return BigDecimal.ONE;
+    }
+}

src/main/resources/application.properties

@@ -8,4 +8,5 @@ spring.mail.properties.mail.smtp.starttls.enable=true
 spring.banner.location=classpath:banner.txt
 jwt.duration=1
 jwt.secret-key=ENC(cD/Zb7b/kxjvWeMmk1ka+AUkCZOeKfx+UJvxQnC6eGv16N4hNjZhj8gAJ5uluJZ4NlrFY+uQzSA0+1OKDa9AZaSpuKOujChmAoUhpnK93iJ4Bh2FGoQYvgXG0M/QkaAV5XQetJeHX1FZZV/IPaHIzWiBps3mc/rf72NdZaHmyrKQhVcSP6NKY5c4a/o94auV)
-spring.config.import=classpath:application-secrets.properties
+spring.config.import=classpath:application-secrets.properties
+spring.threads.virtual.enabled=true