TagInterface

package com.github.vaerys.interfaces;

import com.github.vaerys.commands.CommandObject;
import com.github.vaerys.objects.ReplaceObject;
import org.apache.commons.lang3.StringUtils;

import java.util.Arrays;
import java.util.List;
import java.util.regex.Pattern;

public abstract class TagInterface extends TagObject {

    public TagInterface(int priority) {
        super(priority);
    }

    public abstract String execute(String from, CommandObject command, String args);

    ReplaceObject executeReplace(String from, CommandObject command, String args) {
        return null;
    }

    public abstract String tagName();

    public abstract int argsRequired();

    public abstract String usage();

    public abstract String desc();

    private boolean cont(String from) {
        if (argsRequired() > 0) {
            return Pattern.compile(prefix() + "*." + suffix()).matcher(from).find();
        } else {
            return Pattern.compile(tagName()).matcher(from).find();
        }
    }

    private String contents(String from) {
        if (argsRequired() > 0) {
            return StringUtils.substringBetween(from, prefix(), suffix());
        } else {
            return "";
        }
    }

    private List<String> getSplit(String args) {
        return Arrays.asList(args.split(splitter()));
    }

    private String removeFirst(String from, String args) {
        return StringUtils.replaceOnce(from, args, "");
    }

    private String removeAll(String from, String args) {
        return from.replace(args, "");
    }

    private String replaceFirst(String from, String replace, String withThis) {
        return StringUtils.replaceOnce(from, replace, withThis);
    }

    private String replaceAll(String from, String replace, String withThis) {
        return from.replace(replace, withThis);
    }

    private String splitter() {
        return ";;";
    }

    private String prefix() {
        if (argsRequired() == 0) {
            return tagName();
        } else {
            return tagName() + "{";
        }
    }

    private String suffix() {
        if (argsRequired() == 0) {
            return "";
        } else {
            return "}";
        }
    }

    public String handleTag(String from, CommandObject command, String args) {
        while (cont(from)) {
            from = execute(from, command, args);
        }
        return from;
    }
}