package com.dropbox.core;

import com.dropbox.core.http.HttpRequestor;

import com.dropbox.core.util.StringUtil;

import java.util.ArrayList;

/*>>> import checkers.nullness.quals.Nullable; */

/*>>> import checkers.nullness.quals.NonNull; */

abstract class DbxWebAuthHelper

{

public static String getAuthorizeUrl(DbxAppInfo appInfo, /*@Nullable*/String userLocale,

/*@Nullable*/String redirectUri, /*@Nullable*/String state)

{

return DbxRequestUtil.buildUrlWithParams(userLocale,

appInfo.host.web, "1/oauth2/authorize", new String[] {

"client_id", appInfo.key,

"response_type", "code",

"redirect_uri", redirectUri,

"state", state,

});

}

public static DbxAuthFinish finish(DbxAppInfo appInfo, DbxRequestConfig requestConfig,

String code, /*@Nullable*/String originalRedirectUri)

throws DbxException

{

if (code == null) throw new IllegalArgumentException("'code' can't be null");

/*@Nullable*/String[] params = {

"grant_type", "authorization_code",

"code", code,

"redirect_uri", originalRedirectUri,

"locale", requestConfig.userLocale,

};

ArrayList<HttpRequestor.Header> headers = new ArrayList<HttpRequestor.Header>();

String credentials = appInfo.key + ":" + appInfo.secret;

String base64Credentials = StringUtil.base64Encode(StringUtil.stringToUtf8(credentials));

headers.add(new HttpRequestor.Header("Authorization", "Basic " + base64Credentials));

return DbxRequestUtil.doPostNoAuth(requestConfig, appInfo.host.api, "1/oauth2/token",

params, headers, new DbxRequestUtil.ResponseHandler<DbxAuthFinish>()

{

@Override

public DbxAuthFinish handle(HttpRequestor.Response response) throws DbxException

{

if (response.statusCode != 200) throw DbxRequestUtil.unexpectedStatus(response);

return DbxRequestUtil.readJsonFromResponse(DbxAuthFinish.Reader, response.body);

}

});

}

}