MediaLibrary.java Source code

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Here is the source code for MediaLibrary.java

Source

/**
 * Media Library class
 *
 *
 * Copyright (c) 2015 Jacob Gersztyn
    
 * 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.
 *
 * @author Jacob Gersztyn
 * @version 2015-09-10
 *
 */

import java.util.HashMap;
import org.json.*;
import java.io.PrintWriter;
import java.io.FileOutputStream;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.util.Scanner;

public class MediaLibrary {

    private HashMap<String, MediaDescription> mediaFiles;
    private int count;

    public MediaLibrary() {
        this.mediaFiles = new HashMap<String, MediaDescription>();
        count = 0;
    }

    public MediaLibrary(String jsonFilename) {
        this.mediaFiles = new HashMap<String, MediaDescription>();
        count = 0;

        Scanner ifstr = null;

        try {
            ifstr = new Scanner(new FileInputStream(jsonFilename));

            StringBuilder sb = new StringBuilder();

            while (ifstr.hasNext()) {
                sb.append(ifstr.next());
            }

            JSONObject obj = new JSONObject(sb.toString());

            for (String title : JSONObject.getNames(obj)) {
                JSONObject tobj = new JSONObject(obj.get(title).toString());

                MediaDescription md = new MediaDescription(tobj);

                mediaFiles.put(md.getTitle(), md);
            }

        } catch (FileNotFoundException fnfe) {
            System.out.println("File not found");
            fnfe.printStackTrace();
        } finally {
            ifstr.close();
        }

    }

    public boolean add(MediaDescription aClip) {
        MediaDescription found = this.get(aClip.getTitle());

        if (found == null) {
            this.mediaFiles.put(aClip.getTitle(), aClip);
            count++;
            return true;
        }

        return false;
    }

    public boolean remove(String aTitle) {
        MediaDescription found = this.get(aTitle);

        if (found != null) {
            this.mediaFiles.remove(aTitle);
            count--;
            return true;
        }

        return false;
    }

    public MediaDescription get(String aTitle) {
        return this.mediaFiles.get(aTitle);
    }

    public String[] getTitles() {
        int index = 0;
        String[] titles = new String[this.mediaFiles.size()];
        for (String key : this.mediaFiles.keySet()) {
            titles[index] = this.mediaFiles.get(key).getTitle();
            index++;
        }

        return titles;
    }

    public String[] getMusicTitles() {
        int index = 0;
        String[] titles = new String[this.mediaFiles.size()];
        for (String key : this.mediaFiles.keySet()) {
            if (this.mediaFiles.get(key).isMusic()) {
                titles[index] = this.mediaFiles.get(key).getTitle();
                index++;
            }
        }

        String[] retTitles = new String[index];
        for (int i = 0; i < index; i++)
            retTitles[i] = titles[i];

        return retTitles;
    }

    public String[] getVideoTitles() {
        int index = 0;
        String[] titles = new String[this.mediaFiles.size()];
        for (String key : this.mediaFiles.keySet()) {
            if (!this.mediaFiles.get(key).isMusic()) {
                titles[index] = this.mediaFiles.get(key).getTitle();
                index++;
            }
        }

        String[] retTitles = new String[index];
        for (int i = 0; i < index; i++)
            retTitles[i] = titles[i];

        return retTitles;
    }

    public int getCount() {
        return this.count;
    }

    public void toJSONFile(String jsonFilename) {
        PrintWriter ofstr = null;

        try {
            ofstr = new PrintWriter(new FileOutputStream(jsonFilename));

            JSONObject obj = new JSONObject();

            for (String title : this.mediaFiles.keySet()) {
                obj.put(title, this.mediaFiles.get(title).toJSONObject());
            }

            ofstr.println(obj);

        } catch (FileNotFoundException fnfe) {
            System.out.println("File not found");
            fnfe.printStackTrace();
        } finally {
            ofstr.close();
        }
    }

}