commands.lua

-- Here we process special commands, for example, those with more than one object specified

commands = {};

function commands:_parse(person, command)
	if person.group.perm_edit and command:match("^@.*$") then
		local verb, param = command:match("^@(%a+)%s?(.*)$");
	end
	local verb, object = command:match("^(%a+%s%a+)%s(.+)$");
	if verb and object and #verb > 0 and #object > 0 and person.room:_findobject(object) then
		return verb, object;
	end
	verb, object = command:match("^(%a+)%s?(.*)$");
	if verb and object and #verb > 0 and #object > 0 then
		return verb, object;
	end
	if verb and ((not object) or (object == "")) then return verb, nil; end
end

function commands:_handle(person, action, object)
	-- if not (person and action) then print("Invalid parameters!"); return; end
	function callobjectmethod(object)
		local o = person.room._objects:findobject(object) or person._contents["in"]:findobject(object);
		if o and o[action] then o[action](o, {room = person.room, person = person, nick = person.nick }); return true; end
		return false;
	end
	
	if commands[action] then commands[action](person, action, object);
	elseif object and object ~= "" and callobjectmethod(object) then return true;
	elseif occupant[action] then occupant[action](person, { room = person.room, person = person }); return true;
	elseif action and type(person.room[action]) == "function" then person.room[action](person.room, { room = person.room, person = person, jid = person.jid, nick = person.nick, param = object }); return true;
	else return false; -- Unable to understand command
	end
end

function commands.get(person, action, param)
	-- Decide if we are taking it from a container
	obj1, obj2 = param:match("^([%a%s]+)%sfrom%s([%a%s]+)$");
	if obj1 and obj2 then -- We are taking from a container
		local container = person:_findobject(obj2) or person.room:_findobject(obj2);
		if not container then person:_tell(string.format("I don't see any '%s' here.", obj2 or "")); return; end
		if not (container._contents and container._contents["in"]) then person:_tell(string.format("The %s is not a container.", obj2 or "")); return; end
		object = container:_findobject(obj1);
		if not object then
			if object == false then person:_tell(string.format("Sorry, the %s is locked.", obj2)); 
			else person:_tell(string.format("I can't find any %s in there.", obj1)); end
			return;
		end
		if person:_get({ object = object, container = container, name = obj1 }) then
			person:_say(string.format("/me gets %s from %s", object._properties.longname or object._properties.name or "something", container._properties.longname or container._properties.name or "something"));
		else
			person:_tell("You can't get that");
		end
		return;
	end
	obj1 = param:match("^([%a%s]+)$");
	if not obj1 then person:_tell("uh?"); return; end
	-- So we are getting an object just in the room
	local container = person.room;
	local object = container:_findobject(obj1);
	if not object then person:_tell(string.format("I can't find any %s in here.", obj1)); return; end
	if person:_get({ object = object, container = container, name = obj1}) then
		person:_say(string.format("/me picks up %s", object._properties.longname or object._properties.name or "something"));
	else
		person:_tell("You can't get that");
	end
end

function commands.put(person, action, param)
	obj1, obj2 = param:match("^([%a%s]+)%sin%s([%a%s]+)$");
	if not (obj1 and obj2) then return end
	local oldcontainer = person; -- Where the object currently is
	local object = person:_findobject(obj1);
	if not object then object = person.room:_findobject(obj1); oldcontainer = person.room; end
	if not object then person:_tell(string.format("Sorry, I can't find the '%s'.", obj1)); return; end
	local newcontainer = person.room:_findobject(obj2);
	if not newcontainer then person:_tell(string.format("I don't see any '%s' here.", obj2 or "")); return; end
	if not (newcontainer._contents and newcontainer._contents["in"]) then person:_tell(string.format("The %s is not a container.", obj2 or "")); return; end
	
	if newcontainer:_get({ object = object, container = oldcontainer }) then
		person:_say(string.format("/me puts %s in %s", object._properties.longname or object._properties.name or "something", newcontainer._properties.longname or newcontainer._properties.name or "something"));
	else
		person:_tell("You can't put that in there");
	end
end

function commands.drop(person, action, param)
	 local o = person:_findobject(param);
	 if not o then person:_tell("You don't seem to have any "..param); return false; end
	if person.room:_get({ object = o, container = person }) then
		person:_say("/me drops "..(o._properties.longname or o._properties.name));
	end
end

function commands.give(person, action, param)
	if not param then person:_tell("Give what to whom?"); return; end
	local objname, tonick = param:match("([%a%s]-)%s* to (.*)");
	if not objname or not tonick then person:_tell("Give what to whom?"); return; end
	local o = person:_findobject(objname);
	 if not o then person:_tell("You don't seem to have any "..objname); return false; end
	if not person.room.people[tonick] then person:_tell("Sorry, I can't find "..(tonick or "that person").."in this room..."); return; end
	if person.room.people[tonick]:_get({object = o, container = person}) then
		person:_action("gives "..(o._properties.longname or ((o._properties.prepend or "the").." "..o._properties.name)).." to "..param);
	end
end

function commands.help(person, action, param)
	
end

function commands.loadclass(person, action, param)
	local subenv = { classes = { } }
	local classdefinition = loadfile("objects/"..param..".lua");
	setfenv(classdefinition, subenv);
	local success, message = pcall(classdefinition);
	if not success then person:_tell(string.format("Error loading %s: %s", param, message));
	else
		for k, v in pairs(classes[param]) do classes[param][k] = nil; end -- Clear current class
		for k, v in pairs(subenv.classes[param]) do classes[param][k] = v; end -- Fill with data from new definition
		person:_tell("Loaded");
	end
end

function commands.dump(person, action, param)
	table.print(param, person.room:_findobject(param) or person:_findobject(param) or classes.default or {});
end

function commands.dumproom(person, action, param)
	table.print(person.room.name or "room", person.room);
end

function commands.loadroom(person, action, param)
	if not rooms[param] then person:_tell("You should go into the room, it has not even been created yet."); end
	local oldpeople = rooms[param].people;
	rooms[param]:_create{ room = param, server = GetJIDParts(person.occjid).server}
	rooms[param].people = oldpeople;
end

commands["@create"] = function (person, action, param)
	local chunk = loadstring(param);
	if not chunk then person:_tell("There was an error in your syntax. Please read the manual"); return; end
	setfenv(chunk, 1);
	local success, message = pcall(chunk);
	if not success then person:_tell(message.."\nThere was an error processing the command"); return; end
	local t = message;
	local newobj = classes[t.class]:_create(t);
	if newobj then
		person._contents["in"]:add(newobj);
		person:_action("waves his hands, and conjures something from thin air!");
	else
		person:_tell("For some reason, the object was not created");
	end
end