package ru.oa2.lti.infrastructure;

import lombok.extern.slf4j.Slf4j;
import org.springframework.http.ResponseEntity;
import org.springframework.stereotype.Component;
import org.springframework.web.client.RestClient;
import ru.oa2.lti.config.AppProperties;

@Slf4j
@Component
public class LMSServiceImpl implements LMSService {

    private final RestClient restClient;
    private final AppProperties appProperties;

    public LMSServiceImpl(RestClient restClient, AppProperties appProperties) {
        this.restClient = restClient;
        this.appProperties = appProperties;
    }

    @Override
    public String ltiAuth(String ltiLoginHint, String iss, String loginHint) {
        var result = restClient
                .get()
                .uri("/lti/auth?" +
                        "state=start" +
                        "&code=code1" +
                        "&iss=" + iss +
                        "&login_hint=" + loginHint +
                        "&redirect_uri=" + appProperties.lmsUrl() + "/tool/lti/redirect" +
                        "&lti_message_hint=" + ltiLoginHint)
                .retrieve();

        ResponseEntity<String> body = result.toEntity(String.class);
        if (log.isDebugEnabled()) {
            log.debug("lti/auth RESPONSE: {}", body);
        }
        return body.getBody();
    }
}