com.couchbase.lite.auth.FacebookAuthorizer Maven / Gradle / Ivy

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package com.couchbase.lite.auth;

import com.couchbase.lite.util.Log;

import java.net.URL;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

/**
 * Authenticator impl that knows how to do facebook auth
 *
 * @exclude
 */
public class FacebookAuthorizer extends Authorizer {

    public static final String LOGIN_PARAMETER_ACCESS_TOKEN = "access_token";
    public static final String QUERY_PARAMETER = "facebookAccessToken";
    public static final String QUERY_PARAMETER_EMAIL = "email";

    private static Map, String> accessTokens;

    private String emailAddress;

    public FacebookAuthorizer(String emailAddress) {
        this.emailAddress = emailAddress;
    }

    public boolean usesCookieBasedLogin() {
        return true;
    }

    public Map loginParametersForSite(URL site) {
        Map loginParameters = new HashMap();
        try {
            String accessToken = accessTokenForEmailAndSite(this.emailAddress, site);
            if (accessToken != null) {
                loginParameters.put(LOGIN_PARAMETER_ACCESS_TOKEN, accessToken);
                return loginParameters;
            } else {
                return null;
            }
        } catch (Exception e) {
            Log.e(Log.TAG_SYNC, "Error looking login parameters for site", e);
        }
        return null;
    }

    public String loginPathForSite(URL site) {
        return "/_facebook";
    }

    public synchronized static String registerAccessToken(String accessToken, String email, String origin) {

        List key = new ArrayList();
        key.add(email);
        key.add(origin);

        if (accessTokens == null) {
            accessTokens = new HashMap, String>();
        }
        Log.v(Log.TAG_SYNC, "FacebookAuthorizer registering key: %s", key);
        accessTokens.put(key, accessToken);

        return email;
    }

    public static String accessTokenForEmailAndSite(String email, URL site) {
        try {
            List key = new ArrayList();
            key.add(email);
            key.add(site.toExternalForm().toLowerCase());
            Log.v(Log.TAG_SYNC, "FacebookAuthorizer looking up key: %s from list of access tokens", key);
            return accessTokens.get(key);
        } catch (Exception e) {
            Log.e(Log.TAG_SYNC, "Error looking up access token", e);
        }
        return null;
    }
}