Module:Top 25 report

local p = {}
require('strict')
local Date = require('Module:Date')._Date

local function range(date)
	local date2 = date + 6
	if date2:text("%Y") ~= date:text("%Y") then
		return date:text("%B %-d, %Y") .. " to " .. date2:text("%B %-d, %Y")
	else
		if not (date2:text("%B") == date:text("%B")) then
			return date:text("%B %-d") .. " to " .. date2:text("%B %-d, %Y")
		else
			return date:text("%B %-d") .. " to " .. date2:text("%-d, %Y")
		end
	end
end

local function line(date)
	local link = "[[Wikipedia:Top 25 Report/"
	local range = range(date)

	link = link .. range .. "|" .. range .. "]]"
	return link
end

local function userLink(username)
	return string.format("[[User:%s|%s]]", username, username)
end

p.list = function(frame)
	local text = "This article has been viewed enough times in a single week to appear in the [[Wikipedia:Top 25 Report|Top 25 Report]]"

	frame = frame:getParent()
	local args = frame.args
	local list = {}

	local date
	local isUntil = false
	local errors = {}

	for parameter, dateStr in pairs(frame.args) do
		dateStr = mw.text.trim(dateStr)
		if string.lower(dateStr) == "until" then
			isUntil = true
		elseif parameter == "collapse" then
			 -- Ignore the collapse parameter
		elseif parameter == "ranks" then
		     -- Ignore the parameter ranks used by capsulebot.
		else
			local index = string.find(dateStr,'(',1,true)
			local place = ""
			if index then
				place = string.sub(dateStr,index+1,-2)
				dateStr = string.sub(dateStr,0,index-1)
			end
			local newDate = Date(dateStr)
			if newDate == nil then
				table.insert(errors, dateStr)
			else
				if isUntil then
					isUntil = false
					date = date + 7
					while date < newDate do
						table.insert(list, line(date))
						date = date + 7
					end
				end
				date = newDate
				
				local entry = line(date)
				if place ~= "" then
					entry = entry .. " (" .. place .. ")"
				end
				table.insert(list, entry)
			end
		end
	end
	
	local count = #list
	list.style = "display:inline-block"
	list = require("Module:List").makeList("horizontal", list)

	if count == 0 then
		text = text .. "."
		text = text .. list
	elseif count == 1 then
		list = " The week in which this happened: " .. list
		text = text .. "."
		text = text .. list
	elseif (args["collapse"] == "yes" or (args["collapse"] == nil and count >= 10)) then
		text = text .. " '''" .. tostring(count) .. "''' times."
		text = '<div class="mw-collapsible mw-collapsed"><div>' .. text .. ' The weeks in which this happened:</div><div class="mw-collapsible-content">'.. list .. '</div></div>'
	else
		list = " The weeks in which this happened: " .. list
		text = text .. " '''" .. tostring(count) .. "''' times."
		text = text .. list
	end

	if mw.title.getCurrentTitle().namespace == 1 then
		text = text .. "[[Category:Pages in the Wikipedia Top 25 Report]]"
	end
	
	if #errors > 0 then
		text = text .. "\n\n<big><span style=\"color:red\">'''The following dates couldn't be parsed:'''</span></big>\n#"
		text = text .. table.concat(errors,"\n#") .. "\n"
	end
	
	return require('Module:Message box').main( 'tmbox', {
		text = text,
	    image = "[[File:Article blue.svg|22px|link=|alt=]]"
	})

end

p.header = function(frame)
	local text = frame:expandTemplate{title = "Wikipedia:Top 25 Report/Template:Header", args = {}}
	text = text .. "__NOTOC__\n"
	if mw.title.getCurrentTitle().subpageText == "Report header" then
		return text
	end
	frame = frame:getParent()
	
	local date = Date(frame.args[1])
	text = text .. '<div style="height:10px;clear:both;"></div>\n'
	text = text .. "== Most Popular Wikipedia Articles of the Week ("
	text = text .. range(date) .. ") ==\n"

	local count = 0
	for index, nameStr in pairs(frame.args) do
		if not (index == 1) then
			count = count + 1
		end
	end

	if count > 0 then
		text = text .. "''Prepared with commentary by "

		if count == 1 then
			text = text .. userLink(frame.args[2])
		elseif count == 2 then
			text = text .. userLink(frame.args[2]) .. " and " .. userLink(frame.args[3])
		else
			local i = 2
			while i <= count do
				text = text .. userLink(frame.args[i]) .. ", "
				i = i + 1
			end
			text = text .. " and " .. userLink(frame.args[count+1])
		end
	end

	local key = " "

	text = text .. "''\n\n← [[Wikipedia:Top 25 Report/"
	if frame.args[1] == "January 6, 2013" then
		text = text .. "December 2012|December 2012 monthly report]]"
	else
		text = text .. range(date-7) .. "|Last week's report]]"
	end
	if mw.title.getCurrentTitle().subpageText ~= "Top 25 Report" then
		text = text .. " – [[Wikipedia:Top 25 Report/" .. range(date+7) .. "|Next week's report]] →"
		key = "Top 25 " .. date:text("%Y%m%d")
	end
	if mw.title.getCurrentTitle().namespace == 4 then
		text = text .. "[[Category:Wikipedia Top 25 Report|" .. key .. "]]"
	end
	return text
end

return p