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Module:GS pay

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--
-- This module implements {{GS pay}}
-- There are 150 cells in the GS Pay table. This LUA reduces the amount of
--   manual input needed to 46
--

local p = {}
local stepOnePay = {}
local GSOnePay = {}
local GSTwoPay = {}
local WIGIncrease = {}

-- UPDATE THESE. Last Update: 2024
-- https://www.opm.gov/policy-data-oversight/pay-leave/salaries-wages/salary-tables/pdf/2024/GS.pdf
	--For GS [Grade] Step 1 pay
	stepOnePay[3] = 26975
	stepOnePay[4] = 30280
	stepOnePay[5] = 33878
	stepOnePay[6] = 37765
	stepOnePay[7] = 41966
	stepOnePay[8] = 46475
	stepOnePay[9] = 51332
	stepOnePay[10] = 56528
	stepOnePay[11] = 62107
	stepOnePay[12] = 74441
	stepOnePay[13] = 88520
	stepOnePay[14] = 104604
	stepOnePay[15] = 123041
	-- Within Grade increase for GS [Grade]
	WIGIncrease[3] = 899
	WIGIncrease[4] = 1009
	WIGIncrease[5] = 1129
	WIGIncrease[6] = 1259
	WIGIncrease[7] = 1399
	WIGIncrease[8] = 1549
	WIGIncrease[9] = 1711
	WIGIncrease[10] = 1884
	WIGIncrease[11] = 2070
	WIGIncrease[12] = 2481
	WIGIncrease[13] = 2951
	WIGIncrease[14] = 3487
	WIGIncrease[15] = 4101
	-- GS1 Pay Table (because it has inconsistent WIG)
	GSOnePay[1] = 21986
	GSOnePay[2] = 22724
	GSOnePay[3] = 23454
	GSOnePay[4] = 24183
	GSOnePay[5] = 24912
	GSOnePay[6] = 25339
	GSOnePay[7] = 26063
	GSOnePay[8] = 26792
	GSOnePay[9] = 26821
	GSOnePay[10] = 27502
	-- GS2 Pay Table (because it has inconsistent WIG}
	GSTwoPay[1] = 24722
	GSTwoPay[2] = 25310
	GSTwoPay[3] = 26129
	GSTwoPay[4] = 26821
	GSTwoPay[5] = 27124
	GSTwoPay[6] = 27922
	GSTwoPay[7] = 28720
	GSTwoPay[8] = 29518
	GSTwoPay[9] = 303164
	GSTwoPay[10] = 31114

-- Base pay calculation
function p.basePay(grade, step)
	-- For Step 1 pay for all grades
	if step == nil then
		if grade > 2 then
			-- Returns the Step 1 Pay for [grade]
			return stepOnePay[grade]
		elseif grade == 1 then
			-- Returns GS1 Step 1
			return GSOnePay[1]
		else
			-- Returns GS2 Step 1
			return GSTwoPay[1]
		end
	-- For grades where step is specified
	else
		if grade > 2 then
			-- Calculate GS [grade #], Step [step #] pay
			local pay = stepOnePay[grade] + (WIGIncrease[grade] * (step - 1))
			return pay
		elseif grade == 1 then
			return GSOnePay[step]
		else
			return GSTwoPay[step]
		end
	end
end
	
-- 'Main' function
function p.get(frame)
	-- Error checking
	if frame.args[1] == nil then
		if frame.args[2] == nil then
			return
		end
	else
		-- Grab the basic pay number based on inputs
		return p.basePay(tonumber(frame.args[1]), tonumber(frame.args[2]))
	end
end
	
return p