package com.vaessl.app.connection;

import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.resttestclient.TestRestTemplate;
import org.springframework.boot.resttestclient.autoconfigure.AutoConfigureTestRestTemplate;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;

import com.github.tomakehurst.wiremock.http.Fault;
import com.github.tomakehurst.wiremock.junit5.WireMockRuntimeInfo;
import com.github.tomakehurst.wiremock.junit5.WireMockTest;

import com.jayway.jsonpath.DocumentContext;
import com.jayway.jsonpath.JsonPath;
import com.vaessl.app.dto.ConnectionRequest;

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

import static com.github.tomakehurst.wiremock.client.WireMock.*;
import static com.vaessl.app.connection.Endpoint.*;
import static com.vaessl.app.exception.ErrorMessage.*;
import static com.vaessl.app.connection.ServiceType.*;

@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
@AutoConfigureTestRestTemplate
@WireMockTest
class HomeboxIntegrationTest {

    @Autowired
    TestRestTemplate restTemplate;

    @Autowired
    ConnectionRepository cRepository;

    String okJsonHomeboxResponse = """
            {
                "token": "fake-jwt-token",
                "attachmentToken": "fake-attach",
                "expiresAt": "2026-04-26T02:23:13Z"
            }
                """;

    private static final String TEST_USER = "admin";
    private static final String TEST_PASS = "pw";

    /**
     * Returns Token and status code OK when login is successful.
     * 
     * @param wm the WiremockRuntimeInfo object
     */
    @Test
    void shouldReturnStatusOkWhenHomeboxCredentialsAreValid(WireMockRuntimeInfo wm) {

        stubFor(post(HOMEBOX_LOGIN.getValue())
                .willReturn(okJson(okJsonHomeboxResponse)));

        ResponseEntity<String> response = restTemplate.postForEntity(LOGIN.getValue(), connectionRequest(wm),
                String.class);

        DocumentContext documentContext = JsonPath.parse(response.getBody());

        String serviceType = documentContext.read("$.serviceType");
        assertThat(serviceType).isEqualTo("HOMEBOX");

        String expiresAt = documentContext.read("$.expiresAt", String.class);
        assertThat(expiresAt).isEqualTo("2026-04-26T02:23:13Z");
        assertThat(response.getStatusCode()).isEqualTo(HttpStatus.OK);
    }

    /**
     * Tests the Unauthorized custom exception.
     * 
     * @param wm the WiremockRuntimeInfo object
     */
    @Test
    void shouldFailToConnectWhenHomeboxReturnsUnauthorized(WireMockRuntimeInfo wm) {

        stubFor(post(HOMEBOX_LOGIN.getValue()).willReturn(unauthorized()));

        ResponseEntity<String> response = restTemplate.postForEntity(LOGIN.getValue(), connectionRequest(wm),
                String.class);

        assertThat(response.getStatusCode()).isEqualTo(HttpStatus.UNAUTHORIZED);
        assertThat(response.getBody()).contains(UNAUTHORIZED_WRONG_LOGIN.getMessage());
    }

    /**
     * Tests a server error from the external api.
     * 
     * @param wm the WiremockRuntimeInfo object
     */
    @Test
    void shouldFailToConnectWhenHomeboxReturnsServiceUnavailable(WireMockRuntimeInfo wm) {

        stubFor(post(HOMEBOX_LOGIN.getValue()).willReturn(serviceUnavailable()));

        ResponseEntity<String> response = restTemplate.postForEntity(LOGIN.getValue(), connectionRequest(wm),
                String.class);

        assertThat(response.getStatusCode()).isEqualTo(HttpStatus.SERVICE_UNAVAILABLE);
        assertThat(response.getBody()).contains(SERVER_ERROR_GENERAL.getMessage());
    }

    /**
     * Checks when the service is unavailable or the app URL is wrong.
     */
    @Test
    void shouldReturnServiceUnavailableWhenHomeboxUrlIsWrong(WireMockRuntimeInfo wm) {

        stubFor(post(HOMEBOX_LOGIN.getValue())
                .willReturn(aResponse().withFault(Fault.CONNECTION_RESET_BY_PEER)));

        ConnectionRequest badRequest = connectionRequest(wm);
        ResponseEntity<String> response = restTemplate.postForEntity(LOGIN.getValue(), badRequest, String.class);

        assertThat(response.getStatusCode()).isEqualTo(HttpStatus.SERVICE_UNAVAILABLE);
        assertThat(response.getBody()).contains(SERVICE_UNAVAILABLE_UNREACHABLE_URL.getMessage());
    }

    /**
     * Checks if any login fields are empty since all of them are mandatory.
     */
    @Test
    void shouldReturnBadRequestWhenHomeboxFieldsAreEmpty() {

        ConnectionRequest emtpyRequest = new ConnectionRequest("", "", "", "", false);

        ResponseEntity<String> response = restTemplate.postForEntity(LOGIN.getValue(), emtpyRequest, String.class);

        assertThat(response.getStatusCode()).isEqualTo(HttpStatus.BAD_REQUEST);
        assertThat(response.getBody()).contains(BAD_REQUEST_EMPTY_FIELDS.getMessage());
    }

    /**
     * Test the exception when there is an input for serviceType but it's
     * unsupported.
     */
    @Test
    void shouldReturnWrongServiceTypeException(WireMockRuntimeInfo wm) {
        ConnectionRequest wrongServiceTypeReq = new ConnectionRequest(
                wm.getHttpBaseUrl(),
                "wrong-service-type",
                TEST_USER, TEST_PASS,
                false);

        ResponseEntity<String> response = restTemplate.postForEntity(LOGIN.getValue(), wrongServiceTypeReq,
                String.class);

        assertThat(response.getStatusCode()).isEqualTo(HttpStatus.NOT_FOUND);
        assertThat(response.getBody()).contains(WRONG_SERVICE_TYPE.getMessage());
    }

    /**
     * Tests the succesfull persistance of Homebox credential response to the
     * database.
     * 
     * @param wm the WiremockRuntimeInfo object
     */
    @Test
    void shouldSaveHomeboxConnectionResponseToDb(WireMockRuntimeInfo wm) {

        stubFor(post(urlEqualTo(HOMEBOX_LOGIN.getValue()))
                .willReturn(okJson(okJsonHomeboxResponse)));

        ConnectionRequest request = connectionRequest(wm);

        ResponseEntity<String> response = restTemplate.postForEntity(LOGIN.getValue(), request, String.class);
        assertThat(response.getStatusCode()).isEqualTo(HttpStatus.OK);

        ConnectionEntity dbEntry = cRepository.findByAppUrlAndUsername(request.appUrl(), request.username());

        assertThat(dbEntry).isNotNull();
        assertThat(dbEntry.getAppUrl()).isEqualTo(request.appUrl());
        assertThat(dbEntry.getUsername()).isEqualTo(request.username());

        if (dbEntry instanceof HomeboxEntity hbE) {
            assertThat(hbE.getToken()).isEqualTo("fake-jwt-token");
            assertThat(hbE.getAttachmentToken()).isEqualTo("fake-attach");
            assertThat(hbE.getExpiresAt().toString()).hasToString("2026-04-26T02:23:13Z");
        }
    }

    @Test
    void shouldReturnEmptyCredentialsExceptionWhenCredsAreMissing(WireMockRuntimeInfo wm) {
        ConnectionRequest missingCredentials = new ConnectionRequest(wm.getHttpBaseUrl(), HOMEBOX.getValue(), TEST_USER,
                null,
                false);

        ResponseEntity<String> response = restTemplate.postForEntity(LOGIN.getValue(), missingCredentials,
                String.class);

        assertThat(response.getStatusCode()).isEqualTo(HttpStatus.BAD_REQUEST);
        assertThat(response.getBody()).contains(BAD_REQUEST_EMPTY_FIELDS.getMessage());
    }

    /**
     * Creates a valid connection request with a mock Api through
     * WireMockRuntimeInfo.
     * 
     * @param wm the WiremockRuntimeInfo object
     * @return a mock api connection request.
     */
    private ConnectionRequest connectionRequest(WireMockRuntimeInfo wm) {
        return new ConnectionRequest(wm.getHttpBaseUrl(), HOMEBOX.getValue(), TEST_USER, TEST_PASS,
                null);
    }
}