/*
 * Intake, a command processing library
 * Copyright (C) sk89q <http://www.sk89q.com>
 * Copyright (C) Intake team and contributors
 *
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as published by the
 * Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
 * for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */

package com.sk89q.intake.example.parametric.module;

import com.google.common.collect.ImmutableList;
import com.sk89q.intake.argument.ArgumentException;
import com.sk89q.intake.argument.ArgumentParseException;
import com.sk89q.intake.argument.CommandArgs;
import com.sk89q.intake.example.parametric.model.Body;
import com.sk89q.intake.example.parametric.model.Universe;
import com.sk89q.intake.parametric.Provider;
import com.sk89q.intake.parametric.ProvisionException;

import javax.annotation.Nullable;
import java.lang.annotation.Annotation;
import java.util.List;

public class BodyProvider implements Provider<Body> {

    private final Universe universe;

    public BodyProvider(Universe universe) {
        this.universe = universe;
    }

    @Override
    public boolean isProvided() {
        return false;
    }

    @Nullable
    @Override
    public Body get(CommandArgs arguments, List<? extends Annotation> modifiers) throws ArgumentException, ProvisionException {
        String name = arguments.next();
        Body body = universe.getIfPresent(name);
        if (body != null) {
            return body;
        } else {
            throw new ArgumentParseException("No celestial body by the name of '" + name + "' is known!");
        }
    }

    @Override
    public List<String> getSuggestions(String prefix) {
        return ImmutableList.copyOf(universe.getPrefixedWith(prefix).keySet());
    }
}