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//      Magicbane Emulator Project © 2013 - 2024
//                www.magicbane.com

package engine.ConfigParsing;

import engine.ConfigParsing.EffectEntry.EffectEntry;
import engine.gameManager.ConfigManager;

import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.util.HashMap;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class EffectsParser {

    public static String EffectsPath = ConfigManager.DEFAULT_DATA_DIR + "wpak/Effects.cfg";
    public static HashMap<String, EffectEntry> effect_data = new HashMap<>();
    private static final Pattern EFFECT_REGEX = Pattern.compile("EFFECTBEGIN(.+?)EFFECTEND", Pattern.DOTALL);
    private static final Pattern SOURCE_REGEX = Pattern.compile("SOURCEBEGIN(.+?)SOURCEEND", Pattern.DOTALL);
    private static final Pattern MODS_REGEX = Pattern.compile("MODSBEGIN(.+?)MODSEND", Pattern.DOTALL);

    public static void init() throws IOException {

        byte[] fileData = Files.readAllBytes(Paths.get(EffectsPath));
        String fileContents = new String(fileData);
        Matcher matcher = EFFECT_REGEX.matcher(fileContents);

        // Iterate effect entries from .wpak config data

        while (matcher.find()) {
            EffectEntry effectEntry = parseEffectEntry(matcher.group());

            if (effectEntry != null)
                effect_data.put(effectEntry.id, effectEntry);
        }
    }

    private static EffectEntry parseEffectEntry(String effectData) {
        EffectEntry effectEntry = new EffectEntry();

        // Remove all lines that contain a # and leading/trailing blanks

        effectData = effectData.replaceAll("(?m)^.*#.*\r?\n?", "");
        effectData = effectData.trim();

        // Parse effect entry description

        String firstLine = effectData.substring(0, effectData.indexOf('\n'));
        String[] effectDescription = firstLine.split(" ");

        effectEntry.id = effectDescription[0];
        effectEntry.name = effectDescription[1];
        effectEntry.icon = Integer.parseInt(effectDescription[2]);

        // Parse source entries

        Matcher matcher = SOURCE_REGEX.matcher(effectData);

        while (matcher.find())
            effectEntry.sources.add(matcher.group().trim());

        // Parse modifier entries

        return effectEntry;

    }
}