local savegen = {}

function savegen:new()

	local save = {}

	save.settings = {}
	save.settings.eid = true
	save.settings.visual = true
	save.settings.showonblind = false
	save.settings.maxid = 732

	save.seen = {}
	for i=1, save.settings.maxid do
		save.seen[i] = false
	end

	function save:touch(id)
		self.seen[id] = true
	end

	function save:dump()
		-- Returns a string representation of the save
		-- Bool to symbol
		local f = function(x) return (x and "1") or "0" end
		local result = f(self.settings.eid)..f(self.settings.visual)..f(self.settings.showonblind)
		for i=1, save.settings.maxid do
			result = result..f(save.seen[i])
		end
		return result
	end

	function save:load(text)
		-- Change attributes based on the text
		-- Symbol to bool
		local f = function(x, i)
			return x:sub(i,i)=="1"
		end
		if (#text>=3) then
			-- First 3 are the settings
			self.settings.eid = f(text,1)
			self.settings.visual = f(text,2)
			self.settings.showonblind = f(text,3)
		end
		local offset = 3
		for id=1, self.settings.maxid do
			self.seen[id] = f(text,offset+id)
		end
	end

	return save
end

return savegen