package net.halfheart.ventricleengine;

import net.halfheart.ventricleengine.objects.Armor;
import org.json.JSONArray;
import org.json.JSONObject;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.nio.charset.StandardCharsets;
import java.util.ArrayList;
import java.util.List;
import java.util.Objects;
import java.util.stream.Collectors;

public class ArmorsHandler {
    
    public static Armor constructArmor(String armorName) {
        String filename = "/armors.json";
        try (InputStream inputStream = ItemsHandler.class.getResourceAsStream(filename); BufferedReader reader = new BufferedReader(new InputStreamReader(Objects.requireNonNull(inputStream), StandardCharsets.UTF_8))) {
    
            String jsonText = reader.lines().collect(Collectors.joining("\n"));
            JSONArray jsonArray = new JSONArray(jsonText);
            JSONObject wantedItem = null;

            for (int i = 0; i < jsonArray.length(); i++) {
                JSONObject item = jsonArray.getJSONObject(i);
                if (item.opt("name").toString().equals(armorName)) {
                    wantedItem = item;
                }
            }

            if (wantedItem == null) return null;

            String name = wantedItem.getString("name");
            String description = wantedItem.getString("description");
            byte weight = (byte) wantedItem.getInt("weight");
            short cost = (short) wantedItem.getInt("cost");

            String type = wantedItem.getString("type");
            String resUnit = wantedItem.getString("resUnit");
            
            JSONArray resArray = wantedItem.getJSONArray("resistances");
            List<Byte> resistances = new ArrayList<>();
            for (int i = 0; i < resArray.length(); i++) {
                resistances.add((byte) resArray.getInt(i));
            }

            return new Armor(name, description, weight, cost, type, resistances, resUnit);

        } catch (IOException e) {
            throw new RuntimeException("Could not load armor data", e);
        }
    }
}