/*
 * XdccDownloader - DownloadCommand.kt - Copyright © 2013 David Roden
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package net.pterodactylus.xdcc.ui.stdin

import com.google.common.primitives.Ints
import net.pterodactylus.xdcc.core.Core
import java.io.Writer

/**
 * Command that requests a download from a bot.
 *
 * @see State.getLastResults
 */
class DownloadCommand(private val core: Core) : Command {

	override fun getName() = "download"
	override fun getAliases() = listOf("get")

	override fun execute(state: State, parameters: List<String>, outputWriter: Writer): State {
		if (parameters.isEmpty()) {
			return state
		}
		val index = Ints.tryParse(parameters[0])
		if (index != null && index < state.lastResults.size) {
			core.fetch(state.lastResults[index].bot(), state.lastResults[index].pack())
		}
		return state
	}

}