/*
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 */
package mobbookupdate;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;

import java.io.*;
import java.sql.PreparedStatement;
import java.sql.ResultSet;

/**
 * @author RonanLana
 * 
 * This application updates the Monster Book drop data with the actual underlying drop data from
 * the Maplestory database specified by the URL below.
 * 
 * The original file "MonsterBook.img.xml" from String.wz must be copied to the directory of this application and only then
 * executed. This program will generate another file that must replace the original server file to make the effects take place
 * to on your server.
 * 
 * After replacing on server, this XML must be updated on the client via WZ Editor (HaRepack for instance). Once inside the repack,
 * remove the property 'MonsterBook.img' inside 'string.wz' and choose to import the xml generated with this software.
 * 
 */
public class MobBookUpdate {
    static String host = "jdbc:mysql://localhost:3306/maplesolaxia";
    static String driver = "com.mysql.jdbc.Driver";
    static String username = "root";
    static String password = "";
            
    static String fileName = "MonsterBook.img.xml";
    static String newFile = "MonsterBook_updated.img.xml";
    
    static Connection con = null;
    static PrintWriter printWriter = null;
    static FileReader fileReader = null;
    static BufferedReader bufferedReader = null;
    static byte status = 0;
    static int mobId = -1;
    static int mobCount = 0;
    
    private static String getName(String token) {
        int i, j;
        char[] dest;
        String d;
        
        i = token.lastIndexOf("name");
        i = token.indexOf("\"", i) + 1; //lower bound of the string
        j = token.indexOf("\"", i);     //upper bound

        if(j - i < 7) dest = new char[6];
        else dest = new char[7];
        token.getChars(i, j, dest, 0);
        
        d = new String(dest);
        return(d);
    }
    
    private static void forwardCursor(int st) {
        String line = null;
        
        try {
            while(status >= st && (line = bufferedReader.readLine()) != null) {
                simpleToken(line);
            }
            if(line != null) printWriter.println(line);
        }
        catch(Exception e) {
            e.printStackTrace();
        }
    }
    
    private static void simpleToken(String token) {
        if(token.contains("/imgdir")) {
            status -= 1;
        }
        else if(token.contains("imgdir")) {
            status += 1;
        }
    }
    
    private static void loadDropsFromMob() {
        //System.out.println("Loading mob id " + mobId);
        mobCount++;
        
        try {
            String toPrint;
            int itemId, cont = 0;
            
            PreparedStatement ps = con.prepareStatement("SELECT itemid FROM drop_data WHERE (dropperid = ? AND itemid > 0) GROUP BY itemid;");
            ps.setInt(1, mobId);
            ResultSet rs = ps.executeQuery();
            
            while(rs.next()) {
                toPrint = "";
                for(int k = 0; k <= status; k++) toPrint += "  ";
                
                toPrint += "<int name=\"";
                toPrint += cont;
                toPrint += "\" value=\"";
                
                itemId = rs.getInt("itemid");
                toPrint += itemId;
                toPrint += "\" />";
                
                printWriter.println(toPrint);
                cont++;
            }
        }
        catch(SQLException e) {
            e.printStackTrace();
        }
    }
    
    private static void translateToken(String token) {
        String d;
        int temp;
        
        printWriter.println(token);
        
        if(token.contains("/imgdir")) {
            status -= 1;
        }
        else if(token.contains("imgdir")) {
            if(status == 1) {           //getting MobId
                d = getName(token);
                mobId = Integer.parseInt(d);
            }
            else if(status == 2) {
                d = getName(token);
            
                if(d.contains("reward")) {
                    temp = status;
                    
                    loadDropsFromMob();
                    forwardCursor(temp);
                }
            }
            
            status += 1;
        }
        
    }
    
    private static void UpdateFromDropData() {
        // This will reference one line at a time
        String line = null;
        
        try {
            Class.forName(driver).newInstance();
            con = DriverManager.getConnection(host, username, password);

            printWriter = new PrintWriter(newFile, "UTF-8");
            fileReader = new FileReader(fileName);
            bufferedReader = new BufferedReader(fileReader);

            while((line = bufferedReader.readLine()) != null) {
                translateToken(line);
            }
            
            printWriter.close();
            bufferedReader.close();
            fileReader.close();
            
            con.close();
            System.out.println("Loaded drop data from " + mobCount + " mobs.");
        }
        
        catch(FileNotFoundException ex) {
            System.out.println("Unable to open file '" + fileName + "'");
        }
        catch(IOException ex) {
            System.out.println("Error reading file '" + fileName + "'");
        }
        
        catch(SQLException e) {
            System.out.println("Warning: Could not establish connection to database to change card chance rate.");
            System.out.println(e.getMessage());
        }

        catch(ClassNotFoundException e) {
            System.out.println("Error: could not find class");
            System.out.println(e.getMessage());
        }

        catch(InstantiationException e) {
            System.out.println("Error: instantiation failure");
            System.out.println(e.getMessage());
        }

        catch(Exception e) {
            e.printStackTrace();
        }
    }

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        UpdateFromDropData();
    }
    
}