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Module:TwitterSnowflake/gen

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< Module:TwitterSnowflake
This is an old revision of this page, as edited by Elli (talk | contribs) at 19:34, 20 January 2021. The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.

local p = {}

local function numberToBinStr(x)
	ret=""
	while x~=1 and x~=0 do
		ret=tostring(x%2)..ret
		x=math.modf(x/2)
	end
	ret=tostring(x)..ret
	return ret
end

function p.getSnowflake()
	local sequence = "000000000000" -- 12 sequence bits
	local shard = "0000000010" -- 10 shard bits
	local epoch = 1288834974
	local time = os.time()
	local timestamp = time - epoch
	local timestampbinary = numberToBinStr(timestamp * 1000) -- lua only provides time in seconds, grr
	local snowflakebinary = timestampbinary .. shard .. sequence
	return string.format("%18.0f",tonumber(snowflakebinary,2))
end

return p
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