package com.ankurm.cqrsdemo;

import com.ankurm.cqrsdemo.command.OrderCommandController.LineRequest;
import com.ankurm.cqrsdemo.command.OrderCommandController.PlaceOrderRequest;
import com.ankurm.cqrsdemo.command.OrderCommandController.PlaceOrderResponse;
import com.ankurm.cqrsdemo.query.OrderSummary;
import org.junit.jupiter.api.Test;
import org.springframework.boot.resttestclient.autoconfigure.AutoConfigureTestRestTemplate;
import org.springframework.boot.resttestclient.TestRestTemplate;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.http.ResponseEntity;

import java.util.List;

import static org.assertj.core.api.Assertions.assertThat;

/**
 * Default profile: no {@code async-projection}, so {@link com.ankurm.cqrsdemo.read.SyncOrderSummaryProjection}
 * is active. The projection's simulated write delay (300ms, see {@code application.properties})
 * runs on the same thread that is about to answer the command's HTTP request, so it shows up
 * directly in how long {@code POST /orders} takes -- and because of that, the read model is
 * already correct the instant the command returns, with no waiting required.
 */
@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
@AutoConfigureTestRestTemplate
class SyncProfileLatencyTest {

    @org.springframework.beans.factory.annotation.Autowired
    private TestRestTemplate rest;

    @Test
    void placingAnOrderTakesAtLeastTheSimulatedProjectionDelayAndTheReadModelIsImmediatelyConsistent() {
        PlaceOrderRequest request = new PlaceOrderRequest("Priya",
                List.of(new LineRequest("USB-C-CABLE", 2, 1299), new LineRequest("USB-C-HUB", 1, 4999)));

        long start = System.currentTimeMillis();
        ResponseEntity<PlaceOrderResponse> placed = rest.postForEntity("/orders", request, PlaceOrderResponse.class);
        long elapsedMs = System.currentTimeMillis() - start;

        String orderId = placed.getBody().orderId();
        System.out.println("POST /orders (sync profile) took " + elapsedMs + " ms, orderId=" + orderId);
        assertThat(elapsedMs).isGreaterThanOrEqualTo(300L);

        ResponseEntity<OrderSummary> summary = rest.getForEntity("/order-summaries/" + orderId, OrderSummary.class);
        System.out.println("Immediately after POST returned, GET /order-summaries/" + orderId
                + " -> status=" + summary.getStatusCode() + ", body=" + summary.getBody());
        assertThat(summary.getBody()).isNotNull();
        assertThat(summary.getBody().totalCents()).isEqualTo(2 * 1299 + 4999);
        assertThat(summary.getBody().status()).isEqualTo("PLACED");
    }
}