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//      Magicbane Emulator Project © 2013 - 2026
//                https://www.magicbane.com

package engine.parsers.wpak;

import engine.mbEnums;
import engine.parsers.objects.wpak.SkillTemplate;
import org.pmw.tinylog.Logger;

import java.util.ArrayList;
import java.util.HashMap;

// Loads Skills.cfg (client loader ArcSkill_LoadSkillsCfg 0x584430).

public class SkillParser {

    private static final String fileName = "Config/Skills.cfg";

    public static HashMap<String, SkillTemplate> parseSkillsFile() {

        HashMap<String, SkillTemplate> skills = new HashMap<>();
        ArrayList<WpakLine> lines;
        SkillTemplate skill;
        int failedCount = 0;

        try {
            lines = WpakFileReader.readLines(fileName);
        } catch (Exception e) {
            Logger.error(fileName + ": " + e.getMessage());
            return null;
        }

        for (WpakLine line : lines) {
            try {
                skill = parseSkillLine(line);

                if (skills.containsKey(skill.skill_uid))
                    Logger.warn(line.location() + ": duplicate skill " + skill.skill_uid + "; the later entry wins");

                skills.put(skill.skill_uid, skill);
            } catch (WpakFormatException e) {
                Logger.error(e.getMessage());
                failedCount++;
            }
        }

        Logger.info("Loaded " + skills.size() + " of " + lines.size() + " skills");

        if (failedCount > 0)
            return null;

        return skills;
    }

    // Attribute/weight pairs run until the "=" token; the description follows it

    private static SkillTemplate parseSkillLine(WpakLine line) {

        SkillTemplate skill = new SkillTemplate();
        int index = 3;

        skill.skill_uid = line.token(0);
        skill.skill_name = line.token(1);
        skill.icon_number = line.intToken(2);

        while (line.has(index) && !line.token(index).equals("=")) {
            skill.attr_weights.put(line.enumToken(mbEnums.AttributeType.class, index), line.intToken(index + 1));
            index += 2;
        }

        skill.description = line.has(index + 1) ? line.token(index + 1) : "";

        return skill;
    }
}