モジュール:TimeAgo

-- Implement Template:Time ago
local numberSpell, yesno  -- lazy load
function numberSpell(arg)
	numberSpell = require('Module:NumberSpell')._main
	return numberSpell(arg)
end
function yesno(arg)
	yesno = require('Module:Yesno')
	return yesno(arg)
end
local p = {}
-- Table to convert entered text values to numeric values.
local timeText = {
	'seconds' = 1,
	'minutes' = 60,
	'hours' = 3600,
	'days' = 86400,
	'weeks' = 604800,
	'months' = 2629800,  -- 365.25 * 24 * 60 * 60 / 12
	'years' = 31557600
}
-- Table containing tables of possible units to use in output.
local timeUnits = {
	1 = { '秒', '秒', "秒", "秒" },
	60 = { '分', '分', "分", "分" },
	3600 = { '時間', '時間', "時間", "時間" },
	86400 = { '日', '日', "日", "日" },
	604800 = { '週間', '週間', "週間", "週間" },
	2629800 = { 'か月', 'か月', "か月", "か月" },
	31557600 = { '年', '年', "年", "年" }
}
function p._main( args )
	-- Initialize variables
	local lang = mw.language.getContentLanguage()
	local auto_magnitude_num
	local min_magnitude_num
	local magnitude = args.magnitude
	local min_magnitude = args.min_magnitude
	local purge = args.purge
	-- Add a purge link if something (usually "yes") is entered into the purge parameter
	if purge then
		purge = ' (' .. mw.title.getCurrentTitle():fullUrl('action=purge') .. ' キャッシュを破棄)'
	else
		purge = 
	end
	-- Check that the entered timestamp is valid. If it isn't, then give an error message.
	local success, inputTime = pcall( lang.formatDate, lang, 'xnU', args1 )
	if not success then
		return 'エラー: 最初のパラメータを日付や時間として解析することができません。'
	end
	-- Store the difference between the current time and the inputted time, as well as its absolute value.
	local timeDiff = lang:formatDate( 'xnU' ) - inputTime
	local absTimeDiff = math.abs( timeDiff )
	if magnitude then
		auto_magnitude_num = 0
		min_magnitude_num = timeTextmagnitude
	else
		-- Calculate the appropriate unit of time if it was not specified as an argument.
		local autoMagnitudeData = {
			{ factor = 2, amn = 31557600 },
			{ factor = 2, amn = 2629800 },
			{ factor = 2, amn = 86400 },
			{ factor = 2, amn = 3600 },
			{ factor = 2, amn = 60 }
		}
		for _, t in ipairs( autoMagnitudeData ) do
			if absTimeDiff / t.amn >= t.factor then
				auto_magnitude_num = t.amn
				break
			end
		end
		auto_magnitude_num = auto_magnitude_num or 1
		if min_magnitude then
			min_magnitude_num = timeTextmin_magnitude
		else
			min_magnitude_num = -1
		end
	end
	if not min_magnitude_num then
		-- Default to seconds if an invalid magnitude is entered.
		min_magnitude_num = 1
	end
	local result_num
	local magnitude_num = math.max( min_magnitude_num, auto_magnitude_num )
	local unit = timeUnitsmagnitude_num.unit
	if unit and absTimeDiff >= 864000 then
		local Date = require('Module:Date2')._Date
		local input = lang:formatDate('Y-m-d H:i:s', args1)  -- Date needs a clean date
		input = Date(input)
		if input then
			local id
			if input.hour == 0 and input.minute == 0 then
				id = 'currentdate'
			else
				id = 'currentdatetime'
			end
			result_num = (Date(id) - input):age(unit)
		end
	end
	result_num = result_num or math.floor ( absTimeDiff / magnitude_num )
	local punctuation_key, suffix
	if timeDiff >= 0 then -- Past
		if result_num == 1 then
			punctuation_key = 1
		else
			punctuation_key = 2
		end
		if args.ago ==  then
			suffix = 
		else
			suffix =  .. (args.ago or '前')
		end
	else -- Future
		if args.ago ==  then
			suffix = '後'
			if result_num == 1 then
				punctuation_key = 1
			else
				punctuation_key = 2
			end
		else
			suffix = '後'
			if result_num == 1 then
				punctuation_key = 3
			else
				punctuation_key = 4
			end
		end
	end
	local result_unit = timeUnits magnitude_num  punctuation_key 
	-- Convert numerals to words if appropriate.
	local spell_out = args.spellout
	local spell_out_max = tonumber(args.spelloutmax)
	local result_num_text
	if spell_out and (
		( spell_out == 'auto' and 1 <= result_num and result_num <= 9 and result_num <= ( spell_out_max or 9 ) ) or
		( yesno( spell_out ) and 1 <= result_num and result_num <= 100 and result_num <= ( spell_out_max or 100 ) )
		)
	then
		result_num_text = numberSpell( result_num )
	else
		result_num_text = tostring( result_num )
	end
	local result = result_num_text ..  .. result_unit .. suffix -- Spaces for suffix have been added in earlier.
	return result .. purge
end
function p.main( frame )
	local args = require( 'Module:Arguments' ).getArgs( frame, {
		valueFunc = function( k, v )
			if v then
				v = v:match( '^%s*(.-)%s*$' ) -- Trim whitespace.
				if k == 'ago' or v ~=  then
					return v
				end
			end
			return nil
		end,
		wrappers = 'Template:Time ago'
	})
	return p._main( args )
end
return p