-- Prosody IM v0.2

-- Copyright (C) 2008 Matthew Wild

-- Copyright (C) 2008 Waqas Hussain

-- 

-- 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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.

--

local connlisteners_register = require "net.connlisteners".register;

local console_listener = { default_port = 5582; default_mode = "*l"; };

local commands = {};

local def_env = {};

local default_env_mt = { __index = def_env };

console = {};

function console:new_session(conn)

	local w = conn.write;

	local session = { conn = conn;

			send = function (t) w(tostring(t)); end;

			print = function (t) w("| "..tostring(t).."\n"); end;

			disconnect = function () conn.close(); end;

			};

	session.env = setmetatable({}, default_env_mt);

	-- Load up environment with helper objects

	for name, t in pairs(def_env) do

		if type(t) == "table" then

			session.env[name] = setmetatable({ session = session }, { __index = t });

		end

	end

	return session;

end

local sessions = {};

function console_listener.listener(conn, data)

	local session = sessions[conn];

	if not session then

		-- Handle new connection

		session = console:new_session(conn);

		sessions[conn] = session;

		printbanner(session);

	end

	if data then

		-- Handle data

		if data:match("[!.]$") then

			local command = data:lower();

			command = data:match("^%w+") or data:match("%p");

			if commands[command] then

				commands[command](session, data);

				return;

			end

		end

		session.env._ = data;

		local chunk, err = loadstring("return "..data);

		if not chunk then

			chunk, err = loadstring(data);

			if not chunk then

				err = err:gsub("^%[string .-%]:%d+: ", "");

				err = err:gsub("^:%d+: ", "");

				err = err:gsub("'<eof>'", "the end of the line");

				session.print("Sorry, I couldn't understand that... "..err);

				return;

			end

		end

		setfenv(chunk, session.env);

		local ranok, taskok, message = pcall(chunk);

		if not ranok then

			session.print("Fatal error while running command, it did not complete");

			session.print("Error: "..taskok);

			return;

		end

		if not message then

			session.print("Result: "..tostring(taskok));

			return;

		elseif (not taskok) and message then

			session.print("Command completed with a problem");

			session.print("Message: "..tostring(message));

			return;

		end

		session.print("OK: "..tostring(message));

	end

end

function console_listener.disconnect(conn, err)

end

connlisteners_register('console', console_listener);

-- Console commands --

-- These are simple commands, not valid standalone in Lua

function commands.bye(session)

	session.print("See you! :)");

	session.disconnect();

end

commands["!"] = function (session, data)

	if data:match("^!!") then

		session.print("!> "..session.env._);

		return console_listener.listener(session.conn, session.env._);

	end

	local old, new = data:match("^!(.-[^\\])!(.-)!$");

	if old and new then

		local ok, res = pcall(string.gsub, session.env._, old, new);

		if not ok then

			session.print(res)

			return;

		end

		session.print("!> "..res);

		return console_listener.listener(session.conn, res);

	end

	session.print("Sorry, not sure what you want");

end

-- Session environment --

-- Anything in def_env will be accessible within the session as a global variable

def_env.server = {};

function def_env.server:reload()

	dofile "prosody"

	return true, "Server reloaded";

end

def_env.module = {};

function def_env.module:load(name, host, config)

	local mm = require "modulemanager";

	local ok, err = mm.load(host or self.env.host, name, config);

	if not ok then

		return false, err or "Unknown error loading module";

	end

	return true, "Module loaded";

end

function def_env.module:unload(name, host)

	local mm = require "modulemanager";

	local ok, err = mm.unload(host or self.env.host, name);

	if not ok then

		return false, err or "Unknown error unloading module";

	end

	return true, "Module unloaded";

end

def_env.config = {};

function def_env.config:load(filename, format)

	local config_load = require "core.configmanager".load;

	local ok, err = config_load(filename, format);

	if not ok then

		return false, err or "Unknown error loading config";

	end

	return true, "Config loaded";

end

function def_env.config:get(host, section, key)

	local config_get = require "core.configmanager".get

	return true, tostring(config_get(host, section, key));

end

def_env.hosts = {};

function def_env.hosts:list()

	for host, host_session in pairs(hosts) do

		self.session.print(host);

	end

	return true, "Done";

end

function def_env.hosts:add(name)

end

-------------

function printbanner(session)

session.print [[

                   ____                \   /     _       

                    |  _ \ _ __ ___  ___  _-_   __| |_   _ 

                    | |_) | '__/ _ \/ __|/ _ \ / _` | | | |

                    |  __/| | | (_) \__ \ |_| | (_| | |_| |

                    |_|   |_|  \___/|___/\___/ \__,_|\__, |

                    A study in simplicity            |___/ 

]]

session.print("Welcome to the Prosody administration console. For a list of commands, type: help");

session.print("You may find more help on using this console in our online documentation at ");

session.print("http://prosody.im/doc/console\n");

end