--[[

/*
 *  Baltisot
 *  Copyright (C) 1999-2007 Nicolas "Pixel" Noble
 *
 *  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 2 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, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

/* $Id: tasklib.lua,v 1.8 2008-02-18 09:55:08 pixel Exp $ */

]]--

--
-- Create some simple bindings for the LuaTask system to hide the various ugly yields.
--

local nb_clients_per_hosts = {}
local max_clients_per_hosts = 5

function HttpClient(url, headers, vars)
    local host, nb_clients = string.match(url, "http://([^/]*)/"), 0
    if host then
	nb_clients = nb_clients_per_hosts[host] or 0
    end
    if nb_clients >= max_clients_per_hosts then
        return Buffer()
    end
    if host then
	nb_clients_per_hosts[host] = nb_clients + 1
    end
    if type(headers) == "nil" then
        headers = {}
    end
    if type(vars) == "nil" then
        vars = {}
    end
    headers["User-Agent"] = "Mozilla/5.0 (Windows; U; Windows NT 5.1; fr; rv:1.8.1) Gecko/20061010 Firefox/2.0"
    local r = coroutine.yield("HttpClient", url, headers, vars)
    if host then
	nb_clients_per_hosts[host] = nb_clients_per_hosts[host] - 1
    end
    return r
end

function MaxNbClients(n)
    local r = max_clients_per_hosts

    if n then    
        max_clients_per_hosts = n
    end
    
    return r
end

function GetNbClients(host)
    if host then
	return nb_clients_per_hosts[host] or 0
    end
    
    local r, k, v = {}
    for k, v in pairs(nb_clients_per_hosts) do
	r[k] = v
    end
    
    return r
end

function MailClient(smtp, subject, from, headers, tos, ccs, bccs, fakes, body)
    return coroutine.yield("MailClient", smtp, subject, from, headers, tos, ccs, bccs, fakes, body)
end

function Command(command, ...)
    return coroutine.yield("Command", command, unpack(arg))
end

function TaskYield()
    return coroutine.yield("Yield")
end