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Module:YYSandbox

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local public = {}
local private = {}

-- Removes leading and trailing spaces from strings
function private.trimWhitespace(str)
	local whitespace = { [" "]=true, ["\n"]=true, ["\r"]=true }
	
    local _start = 1
    while (whitespace[str:sub(_start, _start)]) do
        _start = _start + 1
    end
    local _end = str:len()
    while (whitespace[str:sub(_end, _end)]) do
        _end = _end - 1
    end
    return str:sub(_start, _end)
end

-- Checks if a table has a specific key
function private.hasKey(_table, key)
    return _table[key] ~= nil
end

-- Gets a specific item from a table, with a fallback if the table doesn't have that key
function private.getValue(_table, key, fallback)
    if private.hasKey(_table, key) then
        return _table[key]
    else
        return fallback
    end
end

-- Processes a csv row into a table and returns it
function private.processCsv(csv)
	local retval = {}
	for arg in csv:gmatch("([^,]+)") do
		table.insert(retval, private.trimWhitespace(arg))
	end
	return retval
end

-- Get the arguments from a frame
function private.parseArgs(frame)
	if private.getValue(frame.args, "external_args", false) then
		return frame:getParent().args
	end
	return frame.args
end

-- Converts a difficulty number into a format that handles sorting better for + difficulties
function public.SortableDifficulty(frame)
	local args = private.parseArgs(frame)
	if private.hasKey(args, 1) == false then
		return ''
	end
	local diff = args[1]
	if type(diff) == 'number' then
		return diff
	end
	diff = private.trimWhitespace(diff)
	if diff:sub(#diff, #diff) == '+' then
		return tonumber(diff:sub(1, #diff - 1) .. '.5')
	end
	return diff
end

-- Converts a version number into a format that handles sorting better
function public.SortableVersion(frame)
	local args = private.parseArgs(frame)
	if private.hasKey(args, 1) == false then
		return ''
	end
	local retval = ''
	for vpart in args[1]:gmatch('[^.]+') do
		while #vpart < 4 do
			vpart = '0' .. vpart
		end
		retval = retval .. vpart
	end
	return retval
end





function private.startsWith(String, Start)
   return (string.sub(String, 1, string.len(Start)) == Start)
end

function private.toSet(list)
	local out = {}
	for i, k in ipairs(list) do
		out[k] = true
	end
	return out
end

local normed_stats = {
    0.00000000e+00,
    5.83175390e-04,
    4.66540312e-03,
    1.57457355e-02,
    3.73232250e-02,
    7.28969237e-02,
    1.25965884e-01,
    2.00029159e-01,
    2.98585800e-01,
    4.25134859e-01,
    5.74865141e-01,
    7.01414200e-01,
    7.99970841e-01,
    8.74034116e-01,
    9.27103076e-01,
    9.62676775e-01,
    9.84254264e-01,
    9.95334597e-01,
    9.99416825e-01,
    1.00000000e+00
}

-- Calculates Lv 1-30 FRAG/STEP/OVER given partner data from partnerStats.json
function private.calculateStat(ps, stat)
	local statIncStr = 'awakened' .. (stat:gsub("^%l", string.upper)) .. 'Increment'
	local statAllLv = {}
	
	local stat1 = ps[stat][1]
	local stat20 = ps[stat][2]
	local statInc = 0
	if ps['hasAwakening'] then
		statInc = ps[statIncStr]
	end
	
	for lv = 1, 20, 1 do
		statAllLv[lv] = stat1 + normed_stats[lv] * (stat20 - stat1)
	end
	for lv = 21, 30, 1 do
		statAllLv[lv] = stat20 + (lv - 20) * statInc
	end

	return statAllLv
end

-- Calculates Lv 1-30 PROG given partner and data from partnerStats.json
function private.calculateProg(ps, stat)
	local overAllLv = private.calculateStat(ps, 'over')
	local progAllLv = {}
	if stat == 'progstep' then
		local stepAllLv = private.calculateStat(ps, 'step')
		for lv = 1, 30, 1 do
			progAllLv[lv] = overAllLv[lv] + stepAllLv[lv]/2
		end
	elseif stat == 'progfrag' then
		local fragAllLv = private.calculateStat(ps, 'frag')
		for lv = 1, 30, 1 do
			progAllLv[lv] = overAllLv[lv] * fragAllLv[lv]/50
		end
	elseif stat == 'progweaker' then
		for lv = 1, 9, 1 do
			progAllLv[lv] = overAllLv[lv] * (2 - 0.1*lv)
		end
		for lv = 10, 30, 1 do
			progAllLv[lv] = overAllLv[lv]
		end
	elseif stat == 'progabsolute' then
		local stepAllLv = private.calculateStat(ps, 'step')
		local fragAllLv = private.calculateStat(ps, 'frag')
		for lv = 1, 30, 1 do
			local frag = fragAllLv[lv]
			local step = stepAllLv[lv]
			local over = overAllLv[lv]
			progAllLv[lv] = math.max(0, over - math.abs( math.abs(over-frag) - math.abs(over-step) ))
		end
	end
	return progAllLv
end

-- Generates rows (Template:ExactStatTableRow) for use by Template:ExactStatTable
-- Stats implemented: frag, step, over, progstep, progfrag, progweaker, progabsolute
function public.ExactStatTableRows(frame)
	local args = private.parseArgs(frame)
	-- local partnerStats = JsonUtils.jsonToObj("User:GKWS/partnerStats")
	local partnerStats_ = mw.loadJsonData("Module:YYSandbox/partnerStats.json")
	local partnerStats = {}
	for partner, ps in pairs(partnerStats_) do
		partnerStats[partner] = ps
	end
	local stat = private.trimWhitespace(private.getValue(args, 'stat', false))
	local isProgStat = private.startsWith(stat, 'prog')
	local playRating = tonumber(private.trimWhitespace(private.getValue(args, 'playrating', '10')))
	local condense = private.trimWhitespace(private.getValue(args, 'condense', '')) ~= ''
	local condenseLvs = private.toSet({1, 5, 10, 15, 20, 25, 30})
	
	-- partners with (non-random) stat-varying abilities
	partnerStats['Tairitsu (Tempest) [max]'] = { link='Tairitsu (Tempest)',
		frag={27.5,50}, step={130,160}, over={27.5,50}, hasAwakening=false }
	partnerStats['Hikari (Fatalis) [max]'] = { link='Hikari (Fatalis)',
		frag={27.5,50}, step={230,310}, over={220,300}, hasAwakening=false }
	partnerStats['Vita [max bonus]'] = { link='Vita',
		frag={34,51}, step={50.5,70.5}, over={77,110}, hasAwakening=false }
	partnerStats['Mika Yurisaki [max bonus]'] = { link='Mika Yurisaki',
		frag={53,103}, step={53,103}, over={53,103}, hasAwakening=false }
	partnerStats['Ilith [awakened bonus]'] = { link='Ilith',
		frag={50,50}, step={111.5,111.5}, over={50,50}, hasAwakening=true,
		awakenedFragIncrement=0, awakenedStepIncrement=0.5, awakenedOverIncrement=0 }
	
	-- partners that fail BYD challenge
	bydFailPartners = private.toSet({
        'Tairitsu (Tempest)',
        'Tairitsu (Tempest) [max]',
        'Hikari (Fatalis)',
        'Hikari (Fatalis) [max]',
        'DORO*C',
        'Pandora Nemesis (MTA-XXX)',
        'Toa Kozukata',
        'Nami (Twilight)'
	})
	
	-- partners that use double stamina
	doubleStaminaPartners = private.toSet({
	    'Hikari (Fatalis)', 'Hikari (Fatalis) [max]'
	})
	
	-- partners with min level 20
	minLv20Partners = private.toSet({
		'Hikari & Tairitsu (Reunion)', 'Ilith [awakened bonus]'
	})
	
	local rows = {}
	for partner, ps in pairs(partnerStats) do
		local ps = partnerStats[partner]
		
		local minLv = 1
		local maxLv = 20
		if minLv20Partners[partner] then
			minLv = 20
		end
		if ps['hasAwakening'] then
			maxLv = 30
		end
		
		local staminaFactor = 1
		if (doubleStaminaPartners[partner] and stat ~= 'frag') then
			staminaFactor = 0.5
		end
		local trackLostFactor = 1
		if (isProgStat or stat == 'over') and bydFailPartners[partner] then
			trackLostFactor = (2.45*math.sqrt(playRating) + 2.5) / (2.45*math.sqrt(playRating) + 7.5)
		end
		
		local row_args = {
			partner = partner,
			condense = ''
		}
		if ps['link'] then
			row_args['link'] = ps['link']
		end
		if condense then
			row_args['condense'] = 'y'
		end
		local statAllLv = {}
		if isProgStat then
			statAllLv = private.calculateProg(ps, stat)
		else
			statAllLv = private.calculateStat(ps, stat)
		end
		for lv = minLv, maxLv, 1 do
			if (not condense) or condenseLvs[lv] then
				exactStat = statAllLv[lv] * staminaFactor * trackLostFactor
				row_args['stat' .. lv] = string.format("%.3f", exactStat)
			end
		end
		local row = frame:expandTemplate{title = 'YYExactStatTableRow', args=row_args}
		rows[#rows+1] = row
	end

	return table.concat(rows, "\n")
end

return public