package jaskell.sql;

import jaskell.script.Directive;

import jaskell.script.Parameter;

import java.util.ArrayList;

import java.util.Arrays;

import java.util.List;

import java.util.stream.Collectors;

public class Func extends Literal {

List<Directive> _args = new ArrayList<>();

public Func(String name, Directive ... parameters){

super(name);

_args.addAll(Arrays.asList(parameters));

}

@Override

public String script() {

return String.format("%s(%s)",

super.script(),

_args.stream().map(Directive::script).collect(Collectors.joining(", ")));

}

@Override

public List<Parameter<?>> parameters() {

List<Parameter<?>> re = new ArrayList<Parameter<?>>();

_args.forEach(p->re.addAll(p.parameters()));

return re;

}

public Func arg(Directive a){

_args.add(a);

return this;

}

public Func args(Directive ... as){

_args.addAll(Arrays.asList(as));

return this;

}

public static Func max(Directive argument){

return new Func("MAX", argument);

}

public static Func min(Directive argument){

return new Func("MIN", argument);

}

public static Func avg(Directive argument){

return new Func("AVGs", argument);

}

}