ResourceUtil.java

/*
 *
 *  * The MIT License
 *  *
 *  * Copyright {$YEAR} Apothesource, Inc.
 *  *
 *  * Permission is hereby granted, free of charge, to any person obtaining a copy
 *  * of this software and associated documentation files (the "Software"), to deal
 *  * in the Software without restriction, including without limitation the rights
 *  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 *  * copies of the Software, and to permit persons to whom the Software is
 *  * furnished to do so, subject to the following conditions:
 *  *
 *  * The above copyright notice and this permission notice shall be included in
 *  * all copies or substantial portions of the Software.
 *  *
 *  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 *  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 *  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 *  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 *  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 *  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 *  * THE SOFTWARE.
 *
 */
package com.apothesource.pillfill.utilites;

import com.apothesource.pillfill.service.drug.impl.DefaultDrugServiceImpl;
import timber.log.Timber;

import java.io.IOException;
import java.io.InputStream;
import java.util.Properties;

/**
 * @author Michael Ramirez (michael@pillfill.com)
 */
public class ResourceUtil {
    private static final ResourceUtil singleton = new ResourceUtil();
    private String pfApiKey = null;
    private final Properties resourceMappings = new Properties();

    private ResourceUtil() {
    }

    public static ResourceUtil getInstance() {
        return singleton;
    }

    public String getPFApiKey() {
        synchronized (this) {
            if (pfApiKey == null) {
                pfApiKey = System.getProperty("pfApiKey");
                if (pfApiKey == null || pfApiKey.isEmpty()) {
                    pfApiKey = System.getenv("pfApiKey");
                }
                if (pfApiKey == null || pfApiKey.isEmpty()) {
                    pfApiKey = getMappingResources().getProperty("pfApiKey");
                }
            }
            if (pfApiKey == null || pfApiKey.isEmpty()) {
                throw new RuntimeException("PillFill API key not set.");
            } else {
                return pfApiKey;
            }
        }

    }

    public Properties getMappingResources() {
        if (resourceMappings.isEmpty()) {
            synchronized (this) {
                try {
                    InputStream urlResourceMappingStream = ResourceUtil.class.getResourceAsStream("/PFResourceMapping.properties");
                    resourceMappings.load(urlResourceMappingStream);
                    urlResourceMappingStream = ResourceUtil.class.getResourceAsStream("/credentials.properties");
                    resourceMappings.load(urlResourceMappingStream);
                } catch (IOException e) {
                    throw new RuntimeException(e.getMessage(), e);
                }
                try {
                    InputStream urlResourceMappingStream = DefaultDrugServiceImpl.class.getResourceAsStream("/private_credentials.properties");
                    resourceMappings.load(urlResourceMappingStream);
                } catch (Exception e) {
                    Timber.w("Could not find private_credentials.properties so it won't be loaded.");
                }
            }
        }

        return resourceMappings;
    }

    public void setPFApiKey(String PFApiKey) {
        this.pfApiKey = PFApiKey;
    }
}