local lmdb = require 'lmdb'

local M = {}

local db

function M.get()
	if not db then
		db = assert(lmdb.open("data", {maxdbs = 256}))
	end
	local txn = db:txn_begin(true)
	local meta = txn:open("meta", true)
	if not meta.version then
		version = 1
	end
	txn:open("users", true)
	txn:open("usernames", true)
	txn:open("emails", true)
	txn:commit()
	return db
end

function M.txn(write_enabled)
	return M.get():txn_begin(write_enabled)
end

M.next = lmdb.next

return M