package de.kencommand.impl.parsing;

import de.kencommand.api.processing.CommandContext;
import de.kencommand.api.processing.CommandExecutor;
import de.kencommand.api.structure.node.CommandNode;
import lombok.RequiredArgsConstructor;

import java.util.Arrays;

@RequiredArgsConstructor
public class CommandNodeParser<T, S extends CommandContext<T>> {

    public CommandExecutor<? extends S> parse(CommandNode<T, S> commandNode, String[] args) {
        var iter = Arrays.stream(args).iterator();

        while (true) {
            if (!iter.hasNext()) {
                // literals/arguments are optional if the node itself is executable
                if (commandNode.getExecutor() == null) throw new RuntimeException("no literal given but required");
                // TODO parse arguments for executor ig, or rather do that in a separate method
                return commandNode.getExecutor();
            }

            final var arg = iter.next();
            // TODO rethink
            return parse(commandNode.getLiteral(arg), args);
        }
    }
}