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

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

local commands = {};

local default_env = {};

local default_env_mt = { __index = default_env };

console = {};

function console:new_session(conn)

	local w = conn.write;

	return { conn = conn;

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

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

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

			env = setmetatable({}, default_env_mt);

			};

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;

		session.print("Welcome to the lxmppd admin console!");

	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 default_env will be accessible within the session as a global variable

default_env.server = {};

function default_env.server.reload()

	dofile "main.lua"

	return true, "Server reloaded";

end

default_env.module = {};

function default_env.module.load(name)

	local mm = require "modulemanager";

	local ok, err = mm.load(name);

	if not ok then

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

	end

	return true, "Module loaded";

end

default_env.config = {};

function default_env.config.load(filename, format)

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

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

	if not ok then

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

	end

	return true, "Config loaded";

end