com.liferay.mobile.sdk.file.DownloadUtil.java Source code

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Here is the source code for com.liferay.mobile.sdk.file.DownloadUtil.java

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/**
 * Copyright (c) 2000-present Liferay, Inc. All rights reserved.
 *
 * This library is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License as published by the Free
 * Software Foundation; either version 2.1 of the License, or (at your option)
 * any later version.
 *
 * This library is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
 * details.
 */

package com.liferay.mobile.sdk.file;

import com.liferay.mobile.sdk.Call;
import com.liferay.mobile.sdk.Callback;
import com.liferay.mobile.sdk.Config;
import com.liferay.mobile.sdk.auth.Authentication;
import com.liferay.mobile.sdk.auth.DigestAuthentication;
import com.liferay.mobile.sdk.http.HttpClient;
import com.liferay.mobile.sdk.http.Method;
import com.liferay.mobile.sdk.http.Request;
import com.liferay.mobile.sdk.http.Response;
import com.liferay.mobile.sdk.http.ResponseValidator;
import com.liferay.mobile.sdk.util.PortalVersion;
import com.liferay.mobile.sdk.util.Validator;

import com.squareup.okhttp.HttpUrl;

/**
 * @author Bruno Farache
 */
public class DownloadUtil {

    public static Response download(Config config, String url, Callback callback,
            FileProgressCallback progressCallback) throws Exception {

        Request request = new Request.Builder(url).method(Method.GET).config(config).build();

        Object tag = request.tag();

        if (callback != null) {
            callback.init(config, Response.class);
            callback = new DownloadCallback(callback, progressCallback, tag);
        }

        HttpClient client = Call.client();

        if (callback != null) {
            client.async(request, callback);
            return null;
        } else {
            Response response = client.sync(request);
            ResponseValidator validator = config.responseValidator();

            validator.validateStatusCode(response);

            FileTransfer.transfer(response.bodyAsStream(), progressCallback, tag, null);

            return response;
        }
    }

    public static void downloadWebDAVFile(Config config, int portalVersion, String groupFriendlyURL,
            String folderPath, String fileTitle, Callback callback, FileProgressCallback progressCallback)
            throws Exception {

        Authentication auth = config.auth();

        if ((auth != null) && !(auth instanceof DigestAuthentication)) {
            throw new Exception(
                    "Can't download file if authentication implementation is not " + "DigestAuthentication");
        }

        String url = getWebDAVFileURL(config, portalVersion, groupFriendlyURL, folderPath, fileTitle);

        download(config, url, callback, progressCallback);
    }

    protected static String getWebDAVFileURL(Config config, int portalVersion, String groupFriendlyURL,
            String folderPath, String fileTitle) throws Exception {

        StringBuilder sb = new StringBuilder();

        sb.append(config.server());

        if (portalVersion < PortalVersion.V_6_2) {
            sb.append("/api/secure");
        }

        sb.append("/webdav");
        sb.append(prependSlash(groupFriendlyURL));
        sb.append("/document_library");

        sb.append(prependSlash(folderPath));
        sb.append(prependSlash(fileTitle));

        return HttpUrl.parse(sb.toString()).toString();
    }

    protected static String prependSlash(String string) {
        if (Validator.isNotNull(string) && !string.startsWith("/")) {
            return "/" + string;
        }

        return string;
    }

}