local data = mw.loadData( 'Module:Ancient Egypt era/data' )

local lang = mw.language.getContentLanguage()



local p = {}



function p._main( inputYear )

	-- Convert the input to an integer if possible. Return "N/A" if the input could

	-- not be converted, or if the converted input is too big or too small.

	inputYear = tonumber( inputYear )

	if not inputYear or inputYear > tonumber( lang:formatDate( 'Y' ) ) then

		return "''N/A''"

	end



	-- Find the length of the data.

	-- We need the length of the data so that we can loop through it backwards.

	-- Normally we can get the length of tables with the # operator, but this

	-- doesn't work with mw.loadData, as mw.loadData uses a metatable, and the

	-- # operator doesn't work for tables that use metatables.

	local dataLength = 0

	for i, t in ipairs( data ) do

		dataLength = i

	end



	-- Find the year in the data page and display the output.

	for i = dataLength, 1, -1 do

		local t = datai

		if inputYear - 1 >= t.dynstart and inputYear - 1 <= t.dynend then

			-- year of the dynasty, test with = p._main( -495 )

			-- The input year in the calendar is one after the expected (-775 for the year 776 BC). This is why all values need to be corrected by 1. 

			return string.format(

				'[[%s|%s]] [[List of ancient Egyptian dynasties|dynasty]], %d',

				t.dynlink, t.dynasty, inputYear - t.dynstart

			)

		end

	end

end



function p.main( frame )

	-- If you only want to run this module from another Lua module, you can get

	-- rid of this function entirely. This function is only used if you want to

	-- run this individual module from a template.

	local args = require( 'Module:Arguments' ).getArgs( frame, {

		parentOnly = true

	} )

	return p._main( args 1  )

end



return p