package tools.mapletools;

import server.MapleItemInformationProvider;
import tools.DatabaseConnection;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.InputStreamReader;
import java.nio.charset.StandardCharsets;
import java.util.*;

/**
 *
 * @author RonanLana

This application gathers info from the WZ.XML files, fetching all cosmetic coupons and tickets from there, and then
searches the NPC script files, identifying the stylish NPCs that supposedly uses them. It will reports all NPCs that
uses up a card, as well as report those currently unused.

Estimated parse time: 10 seconds

 */
public class CashCosmeticsFetcher {
    private static final Map<Integer, String> scriptEntries = new HashMap<>(500);

    private static void listFiles(String directoryName, ArrayList<File> files) {
        File directory = new File(directoryName);

        // get all the files from a directory
        File[] fList = directory.listFiles();
        for (File file : fList) {
            if (file.isFile()) {
                files.add(file);
            } else if (file.isDirectory()) {
                listFiles(file.getAbsolutePath(), files);
            }
        }
    }

    private static int getNpcIdFromFilename(String name) {
        try {
            return Integer.parseInt(name.substring(0, name.indexOf('.')));
        } catch(Exception e) {
            return -1;
        }
    }

    private static void loadScripts() throws Exception {
        ArrayList<File> files = new ArrayList<>();
        listFiles(ToolConstants.SCRIPTS_PATH + "/npc", files);

        for(File f : files) {
            Integer npcid = getNpcIdFromFilename(f.getName());

            //System.out.println("Parsing " + f.getAbsolutePath());
            InputStreamReader fileReader = new InputStreamReader(new FileInputStream(f), StandardCharsets.UTF_8);
            BufferedReader bufferedReader = new BufferedReader(fileReader);

            StringBuilder stringBuffer = new StringBuilder();
            String line;

            while((line = bufferedReader.readLine())!=null){
                stringBuffer.append(line).append("\n");
            }

            scriptEntries.put(npcid, stringBuffer.toString());

            bufferedReader.close();
            fileReader.close();
        }
    }

    private static List<Integer> findItemidOnScript(int itemid) {
        List<Integer> files = new LinkedList<>();
        String t = String.valueOf(itemid);

        for (Map.Entry<Integer, String> text : scriptEntries.entrySet()) {
            if (text.getValue().contains(t)) {
                files.add(text.getKey());
            }
        }

        return files;
    }

    private static void reportCosmeticCouponResults() {
        final MapleItemInformationProvider ii = MapleItemInformationProvider.getInstance();
        for (int itemid = 5150000; itemid <= 5154000; itemid++) {
            String itemName = ii.getName(itemid);

            if (itemName != null) {
                List<Integer> npcids = findItemidOnScript(itemid);

                if (!npcids.isEmpty()) {
                    System.out.println("Itemid " + itemid + " found on " + npcids + ". (" + itemName + ")");
                } else {
                    System.out.println("NOT FOUND ITEMID " + itemid + " (" + itemName + ")");
                }
            }
        }
    }

    public static void main(String[] args) {
        DatabaseConnection.initializeConnectionPool(); // MapleItemInformationProvider loads unrelated stuff from the db
        try {
            loadScripts();
            System.out.println("Loaded scripts");

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