code: /*
   * Copyright (c) 2022 Airbyte, Inc., all rights reserved.
   */
  
  package io.airbyte.oauth.flows;
  
  import com.fasterxml.jackson.databind.JsonNode;
  import com.google.common.annotations.VisibleForTesting;
  import com.google.common.collect.ImmutableMap;
  import io.airbyte.config.persistence.ConfigRepository;
  import io.airbyte.oauth.BaseOAuth2Flow;
  import java.io.IOException;
  import java.net.URISyntaxException;
  import java.net.http.HttpClient;
  import java.util.Map;
  import java.util.UUID;
  import java.util.function.Supplier;
  import org.apache.http.client.utils.URIBuilder;
  
  public class LinkedinAdsOAuthFlow extends BaseOAuth2Flow {
  
    private static final String AUTHORIZE_URL = "https://www.linkedin.com/oauth/v2/authorization";
    private static final String ACCESS_TOKEN_URL = "https://www.linkedin.com/oauth/v2/accessToken";
    private static final String SCOPES = "r_ads_reporting r_emailaddress r_liteprofile r_ads r_basicprofile r_organization_social";
  
    public LinkedinAdsOAuthFlow(ConfigRepository configRepository, HttpClient httpClient) {
      super(configRepository, httpClient);
    }
  
    @VisibleForTesting
    public LinkedinAdsOAuthFlow(ConfigRepository configRepository, final HttpClient httpClient, Supplier<String> stateSupplier) {
      super(configRepository, httpClient, stateSupplier);
    }
  
    @Override
    protected String formatConsentUrl(UUID definitionId,
                                      String clientId,
                                      String redirectUrl,
                                      final JsonNode inputOAuthConfiguration)
        throws IOException {
      try {
        return new URIBuilder(AUTHORIZE_URL)
            .addParameter("client_id", clientId)
            .addParameter("redirect_uri", redirectUrl)
            .addParameter("response_type", "code")
            .addParameter("scope", SCOPES)
            .addParameter("state", getState())
            .build().toString();
      } catch (URISyntaxException e) {
        throw new IOException("Failed to format Consent URL for OAuth flow", e);
      }
    }
  
    @Override
    protected String getAccessTokenUrl(final JsonNode inputOAuthConfiguration) {
      return ACCESS_TOKEN_URL;
    }
  
    @Override
    protected Map<String, String> getAccessTokenQueryParameters(final String clientId,
                                                                final String clientSecret,
                                                                final String authCode,
                                                                final String redirectUrl) {
      return ImmutableMap.<String, String>builder()
          .putAll(super.getAccessTokenQueryParameters(clientId, clientSecret, authCode, redirectUrl))
          .put("grant_type", "authorization_code")
          .build();
    }
  
  }
  