local rng = {}
function rng.markup() return math.random() > 0.5 and "plain" or "imageboard" end
function rng.generate_str(length,characters)
	return function()
		local t = {}
		local rnglength = math.random(2,length)
		for i = 1,rnglength do
			local rngpos = math.random(#characters)
			local rngchar = string.sub(characters,rngpos,rngpos)
			table.insert(t,rngchar)
		end
		local ret = table.concat(t)
		return ret
	end
end
function rng.characters(mask)
	local t = {}
	for i = 1,255 do
		if string.match(string.char(i), mask) then
			table.insert(t,string.char(i))
		end
	end
	return table.concat(t)
end
function rng.maybe(input,chance)
	chance = chance or 0.5
	if math.random() < chance then
		return input
	end
end
rng.any = rng.generate_str(1024,rng.characters("."))
rng.subdomain = rng.generate_str(30,rng.characters("[0-9a-z]"))
rng.storyname = rng.generate_str(10,"[a-zA-Z0-9$+!*'(),-]")
rng.storyid = function() return tostring(math.random(1,10)) end
rng.tags = function()
	local tag_gen = rng.generate_str(10,"[%w%d ]")
	local t = {}
	for i = 1,10 do
		table.insert(t,tag_gen())
	end
	return table.concat(t,";")
end

return rng