package org.zamorak.bot.methods;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.URL;
import java.net.URLConnection;
import java.text.NumberFormat;

/**
 * Gets prices for given items.
 *
 * @author Tyluur
 * @since Jul 4, 2013
 */
public class PriceChecker {

    /**
     * Example usage
     * @param args
     */
    public static void main(String... args) {
        String item = "Amulet of fury";
        System.out.println("The price of " + item + " is: " + NumberFormat.getInstance().format(new ItemPrice(item).getPrice()));
    }

    /**
     * Parses the formatting of the web page and finds the price of an item
     * @param name The name of the item
     * @return The price of the item.
     * @throws IOException
     */
    public long getPrice(String name) throws IOException {
        String link = "http://forums.zybez.net/runescape-2007-prices/api/"
                + (name.replaceAll(" ", "+"));
        URL url = new URL(link);
        URLConnection con = url.openConnection();
        BufferedReader in = new BufferedReader(new InputStreamReader(
                con.getInputStream()));
        String line;
        while ((line = in.readLine()) != null) {
            if (line.contains("\"average\"")) {
                line = line.split("average")[1];
                line = line.split(",")[0];
                line = line.replaceAll("\"", "");
                line = line.replaceAll(":", "");
                return Math.round(Double.parseDouble(line));
            }
        }
        return 0;
    }

    /**
     * The getter
     * @return The instance of the class
     */
    public static PriceChecker get() {
        return INSTANCE;
    }

    /** The instance of this class. */
    private static final PriceChecker INSTANCE = new PriceChecker();

    /**
     * The wrapper for an item price based on the name.
     *
     * @author Tyluur
     * @since July 4th, 2013
     */
    public static class ItemPrice {

        /**
         * The new constructor for the item price
         * @param name The name of the item
         */
        public ItemPrice(String name) {
            this.name = name;
        }

        /** The instance of the name of the item. */
        private String name;

        /**
         * Gets the name of the item
         * @return The name of the item.
         */
        public String getName() {
            return name;
        }

        /**
         * Gets the price of the item
         * @return The price of the item
         */
        public long getPrice() {
            try {
                return PriceChecker.get().getPrice(getName());
            } catch (IOException e) {
                e.printStackTrace();
                return -1;
            }
        }

        /**
         * Transforms the ItemPrice into a string when instantiated
         */
        @Override
        public String toString() {
            return "" + getPrice();
        }

    }

}