com.gluonhq.attach.storage.impl.IOSStorageService Maven / Gradle / Ivy

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API for accessing storage features
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/*
 * Copyright (c) 2016, Gluon
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.

 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see .
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL GLUON BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
package com.gluonhq.attach.storage.impl;

import com.gluonhq.attach.storage.StorageService;

import java.io.File;
import java.util.HashMap;
import java.util.Map;
import java.util.Optional;

public class IOSStorageService implements StorageService {

    static {
        System.loadLibrary("Storage");
    }

    public IOSStorageService() {
    }

    @Override
    public Optional getPrivateStorage() {
        try {
            String storage = getPrivateStorageURL();
            return Optional.of(new File(storage));
        } catch (Exception e) {
            return Optional.empty();
        }
    }

    @Override
    public Optional getPublicStorage(String subdirectory) {
        try {
            String storage = getPublicStorageURL(subdirectory);
            return Optional.of(new File(storage));
        } catch (Exception e) {
            return Optional.empty();
        }
    }

    @Override
    public boolean isExternalStorageWritable() {
        return false;
    }

    @Override
    public boolean isExternalStorageReadable() {
        return false;
    }
    
    private static String privateStorageURL = null;
    private final static Map publicStorageMap = new HashMap<>();

    private synchronized String getPrivateStorageURL() {
        if (privateStorageURL == null) {
            privateStorageURL = privateStorageURL();
        }
        return privateStorageURL;
    }
    
    private synchronized String getPublicStorageURL(String dir) {
        if (publicStorageMap.get(dir) == null) {
            String storage = publicStorageURL(dir);
            publicStorageMap.put(dir, storage);
        }
        return publicStorageMap.get(dir);
    }
    
    private native String privateStorageURL();
    private native String publicStorageURL(String dir);
}