PaymentQueryController.java

package com.checkout.paymentgw.query.api;

import com.checkout.paymentgw.query.domain.PaymentView;
import com.checkout.paymentgw.query.domain.PaymentViewRepository;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.server.ResponseStatusException;

import java.util.UUID;

@RestController
@RequestMapping("/api/payments")
public class PaymentQueryController {

    private final PaymentViewRepository repository;

    public PaymentQueryController(PaymentViewRepository repository) {
        this.repository = repository;
    }

    @GetMapping("/{id}")
    public ResponseEntity<PaymentResponse> get(@PathVariable UUID id) {
        PaymentView v = repository.findById(id)
                .orElseThrow(() -> new ResponseStatusException(HttpStatus.NOT_FOUND, "Payment not found"));
        return ResponseEntity.ok(PaymentResponse.from(v));
    }
}