package com.ankurm.restclienttest;

import tools.jackson.databind.ObjectMapper;
import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.restclient.test.autoconfigure.RestClientTest;
import org.springframework.http.MediaType;
import org.springframework.test.web.client.MockRestServiceServer;

import static org.assertj.core.api.Assertions.assertThat;
import static org.springframework.test.web.client.match.MockRestRequestMatchers.requestTo;
import static org.springframework.test.web.client.response.MockRestResponseCreators.withSuccess;

/**
 * {@link EmployeeHttpInterface} has no class {@code @RestClientTest} can point at directly - it
 * is a bare interface, and the real bean only exists because {@link AppConfig}'s
 * {@code @Bean} method builds it from an {@code HttpServiceProxyFactory}. Passing the
 * {@code @Configuration} class itself as the slice's "component" is what gets that bean (and
 * the underlying {@code RestClient} it is built from) into the test context at all; the mocking
 * code underneath is otherwise identical to {@link RestClientEmployeeTest}.
 */
@RestClientTest(components = AppConfig.class)
class HttpInterfaceClientTest {

    @Autowired
    private MockRestServiceServer mockServer;

    @Autowired
    private EmployeeHttpInterface employeeHttpInterface;

    @Autowired
    private ObjectMapper objectMapper;

    @Test
    void whenGetEmployeeById_thenHttpInterfaceReturnsEmployee() throws Exception {
        Employee mockEmployee = new Employee(3, "Daniel", "O", "daniel@example.com");
        String employeeJson = objectMapper.writeValueAsString(mockEmployee);

        mockServer.expect(requestTo("http://hr-api.example.com/employees/3"))
                .andRespond(withSuccess(employeeJson, MediaType.APPLICATION_JSON));

        Employee result = employeeHttpInterface.getEmployeeById(3);

        assertThat(result).isNotNull();
        assertThat(result.id()).isEqualTo(3);
        assertThat(result.firstName()).isEqualTo("Daniel");

        mockServer.verify();

        Capture.write("04-http-interface-client.txt",
                "A declarative @HttpExchange interface client, mocked the same way as a hand-written one",
                "requestTo(\"http://hr-api.example.com/employees/3\") -> 200 OK " + employeeJson + "\nresult = " + result);
    }
}