package com.thebrokenrail.freshcoffee.util.limit;

import com.thebrokenrail.freshcoffee.config.HardcodedConfig;
import com.thebrokenrail.freshcoffee.util.Util;
import net.fabricmc.loader.api.FabricLoader;
import net.fabricmc.loader.api.ModContainer;
import net.fabricmc.loader.api.metadata.ModMetadata;

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

public class Limit {
    private final boolean isMinimum;
    private int value;
    private List<String> source = singleton("default");

    private static String modToString(ModMetadata metadata) {
        return metadata.getName() + " (" + metadata.getId() + ')';
    }

    private static List<String> singleton(String value) {
        return new ArrayList<>(Collections.singleton(value));
    }

    Limit(boolean isMinimum) {
        this.isMinimum = isMinimum;
        value = isMinimum ? 0 : Integer.MAX_VALUE;

        String key = isMinimum ? HardcodedConfig.MINIMUM_JSON_KEY : HardcodedConfig.MAXIMUM_JSON_KEY;

        for (ModContainer mod : FabricLoader.getInstance().getAllMods()) {
            ModMetadata metadata = mod.getMetadata();
            if (metadata.containsCustomValue(key)) {
                try {
                    int newValue = metadata.getCustomValue(key).getAsNumber().intValue();
                    update(newValue, modToString(metadata));
                } catch (ClassCastException e) {
                    Util.getLogger().error("Invalid " + (isMinimum ? "Minimum" : "Maximum") + " Java Version Specified: " + metadata.getId());
                }
            }
        }
    }

    private void update(int value, String source) {
        if (isMinimum ? value > this.value : value < this.value) {
            this.value = value;
            this.source = singleton(source);
        } else if (value == this.value) {
            this.source.add(source);
        }
    }

    public int getValue() {
        return value;
    }

    @Override
    public String toString() {
        StringBuilder sourceBuilder = new StringBuilder();
        for (int i = 0; i < source.size(); i++) {
            if (i != 0) {
                sourceBuilder.append(i == 1 && source.size() - 1 == 1 ? ' ' : ", ");
                if (i == source.size() - 1) {
                    sourceBuilder.append("and ");
                }
            }
            sourceBuilder.append(source.get(i));
        }

        return String.format(HardcodedConfig.LIMIT_TEXT, value, sourceBuilder.toString());
    }
}