ru.hh.oauth.subscribe.apis.ConstantContactApi2 Maven / Gradle / Ivy

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package ru.hh.oauth.subscribe.apis;

import java.util.regex.Matcher;
import java.util.regex.Pattern;

import ru.hh.oauth.subscribe.core.builder.api.DefaultApi20;
import ru.hh.oauth.subscribe.core.exceptions.OAuthException;
import ru.hh.oauth.subscribe.core.extractors.AccessTokenExtractor;
import ru.hh.oauth.subscribe.core.model.OAuthConfig;
import ru.hh.oauth.subscribe.core.model.OAuthConstants;
import ru.hh.oauth.subscribe.core.model.Token;
import ru.hh.oauth.subscribe.core.model.Verb;
import ru.hh.oauth.subscribe.core.utils.OAuthEncoder;
import ru.hh.oauth.subscribe.core.utils.Preconditions;

public class ConstantContactApi2 extends DefaultApi20 {

    private static final String AUTHORIZE_URL
            = "https://oauth2.constantcontact.com/oauth2/oauth/siteowner/authorize?client_id=%s&response_type=code&redirect_uri=%s";

    @Override
    public String getAccessTokenEndpoint() {
        return "https://oauth2.constantcontact.com/oauth2/oauth/token?grant_type=" + OAuthConstants.AUTHORIZATION_CODE;
    }

    @Override
    public String getAuthorizationUrl(OAuthConfig config) {
        return String.format(AUTHORIZE_URL, config.getApiKey(), OAuthEncoder.encode(config.getCallback()));
    }

    @Override
    public Verb getAccessTokenVerb() {
        return Verb.POST;
    }

    @Override
    public AccessTokenExtractor getAccessTokenExtractor() {
        return new AccessTokenExtractor() {

            public Token extract(String response) {
                Preconditions.checkEmptyString(response, "Response body is incorrect. Can't extract a token from an empty string");

                String regex = "\"access_token\"\\s*:\\s*\"([^&\"]+)\"";
                Matcher matcher = Pattern.compile(regex).matcher(response);
                if (matcher.find()) {
                    String token = OAuthEncoder.decode(matcher.group(1));
                    return new Token(token, "", response);
                } else {
                    throw new OAuthException("Response body is incorrect. Can't extract a token from this: '" + response + "'", null);
                }
            }
        };
    }
}