/*
 * roulette.js -- russian roulette game
 *
 * Copyright (c) 2013-2016 David Demelier <markand@malikania.fr>
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

// Plugin information.
info = {
    author: "David Demelier <markand@malikania.fr>",
    license: "ISC",
    summary: "A russian roulette for IRC",
    version: "@IRCCD_VERSION@"
};

// Modules.
var Logger = Irccd.Logger;
var Plugin = Irccd.Plugin;
var Server = Irccd.Server;
var Util = Irccd.Util;

/**
 * Formats for writing.
 */
Plugin.format = {
    "lucky":    "#{nickname}, you're lucky this time",
    "shot":     "HEADSHOT"
};

function Gun(server, channel)
{
    this.server = server;
    this.channel = channel;
    this.index = 0;
    this.bullet = Math.floor(Math.random() * 6);
}

/**
 * Map of games.
 */
Gun.map = {};

/**
 * Search for an existing game.
 *
 * @param server the server object
 * @param channel the channel name
 * @return the hangman instance or undefined if no one exists
 */
Gun.find = function (server, channel)
{
    return Gun.map[server.toString() + '@' + channel];
}

/**
 * Create a new game, store it in the map and return it.
 *
 * @param server the server object
 * @param channel the channel name
 * @return the hangman object
 */
Gun.create = function (server, channel)
{
    return Gun.map[server.toString() + "@" + channel] = new Gun(server, channel);
}

/**
 * Remove the specified game from the map.
 *
 * @param game the game to remove
 */
Gun.remove = function (game)
{
    delete Gun.map[game.server + "@" + game.channel];
}

/**
 * Load all formats.
 */
Gun.loadFormats = function ()
{
    // --- DEPRECATED ------------------------------------------
    //
    // This code will be removed.
    //
    // Since:    2.1.0
    // Until:    3.0.0
    // Reason:    new [format] section replaces it.
    //
    // ----------------------------------------------------------
    for (var key in Plugin.format) {
        var optname = "format-" + key;

        if (typeof (Plugin.config[optname]) !== "string")
            continue;

        if (Plugin.config[optname].length === 0)
            Logger.warning("skipping empty '" + optname + "' format");
        else
            Plugin.format[key] = Plugin.config[optname];
    }
}

Gun.prototype.shot = function ()
{
    return this.index++ === this.bullet;
}

function onLoad()
{
    Gun.loadFormats();
}

onReload = onLoad;

function onCommand(server, origin, channel)
{
    var kw = {
        channel: channel,
        command: server.info().commandChar + Plugin.info().name,
        nickname: Util.splituser(origin),
        origin: origin,
        server: server.toString(),
        plugin: Plugin.info().name
    };

    var game = Gun.find(server, channel);

    if (!game)
        game = Gun.create(server, channel);

    if (game.shot()) {
        server.kick(Util.splituser(origin), channel, Util.format(Plugin.format["shot"], kw));
        Gun.remove(game);
    } else {
        kw.count = (6 - game.index).toString();
        server.message(channel, Util.format(Plugin.format["lucky"], kw));
    }
}