package net.minecraftforge.gradle;

import com.google.common.base.Strings;
import groovy.lang.Closure;
import net.minecraftforge.gradle.delayed.DelayedString;
import org.gradle.api.file.CopySpec;

import java.util.HashMap;

@SuppressWarnings("serial")
public class CopyInto extends Closure<Object> {
    private String dir;
    private String[] filters;
    private HashMap<String, Object> expands = new HashMap<>();

    public CopyInto(String dir) {
        super(null);
        this.dir = dir;
        this.filters = new String[]{};
    }

    public CopyInto(String dir, String... filters) {
        super(null);
        this.dir = dir;
        this.filters = filters;
    }

    public CopyInto addExpand(String key, String value) {
        expands.put(key, value);
        return this;
    }

    public CopyInto addExpand(String key, DelayedString value) {
        expands.put(key, value);
        return this;
    }

    @Override
    public Object call(Object... args) {
        CopySpec spec = (CopySpec) getDelegate();

        // do filters
        for (String s : filters) {
            if (s.startsWith("!")) spec.exclude(s.substring(1));
            else spec.include(s);
        }

        // expands

        if (!expands.isEmpty())
            spec.expand(expands);

        if (!Strings.isNullOrEmpty(dir))
            spec.into(dir);

        return null;
    }
}
