com.xengar.android.booksearch.data.Book.java Source code

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Here is the source code for com.xengar.android.booksearch.data.Book.java

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/*
 * Copyright (C) 2017 Angel Garcia
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.xengar.android.booksearch.data;

import android.text.TextUtils;

import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import java.io.Serializable;
import java.util.ArrayList;

/**
 * Book
 */
public class Book implements Serializable {
    private String openLibraryId;
    private String author;
    private String title;

    public String getOpenLibraryId() {
        return openLibraryId;
    }

    public String getTitle() {
        return title;
    }

    public String getAuthor() {
        return author;
    }

    // Get medium sized book cover from covers API
    public String getCoverUrl() {
        return "http://covers.openlibrary.org/b/olid/" + openLibraryId + "-M.jpg?default=false";
    }

    // Get large sized book cover from covers API
    public String getLargeCoverUrl() {
        return "http://covers.openlibrary.org/b/olid/" + openLibraryId + "-L.jpg?default=false";
    }

    // Returns a Book given the expected JSON
    public static Book fromJson(JSONObject jsonObject) {
        Book book = new Book();
        try {
            // Deserialize json into object fields
            // Check if a cover edition is available
            if (jsonObject.has("cover_edition_key")) {
                book.openLibraryId = jsonObject.getString("cover_edition_key");
            } else if (jsonObject.has("edition_key")) {
                final JSONArray ids = jsonObject.getJSONArray("edition_key");
                book.openLibraryId = ids.getString(0);
            }
            book.title = jsonObject.has("title_suggest") ? jsonObject.getString("title_suggest") : "";
            book.author = getAuthor(jsonObject);
        } catch (JSONException e) {
            e.printStackTrace();
            return null;
        }
        // Return new object
        return book;
    }

    // Return comma separated author list when there is more than one author
    private static String getAuthor(final JSONObject jsonObject) {
        try {
            final JSONArray authors = jsonObject.getJSONArray("author_name");
            int numAuthors = authors.length();
            final String[] authorStrings = new String[numAuthors];
            for (int i = 0; i < numAuthors; ++i) {
                authorStrings[i] = authors.getString(i);
            }
            return TextUtils.join(", ", authorStrings);
        } catch (JSONException e) {
            return "";
        }
    }

    // Decodes array of book json results into business model objects
    public static ArrayList<Book> fromJson(JSONArray jsonArray) {
        ArrayList<Book> books = new ArrayList<Book>(jsonArray.length());
        // Process each result in json array, decode and convert to business
        // object
        for (int i = 0; i < jsonArray.length(); i++) {
            JSONObject bookJson = null;
            try {
                bookJson = jsonArray.getJSONObject(i);
            } catch (Exception e) {
                e.printStackTrace();
                continue;
            }
            Book book = Book.fromJson(bookJson);
            if (book != null) {
                books.add(book);
            }
        }
        return books;
    }
}