Module:RandomTableRow

Documentation for this module may be created at Module:RandomTableRow/doc

local p = {}

--Makes a seed based on the date so that it always returns the same first random number in sequence which changes every day
local function getDailyRandomNumber(maxNum) 
   local seed = os.date("%Y%m%d")
   math.randomseed(tonumber(seed))
   return math.random(1, maxNum)
end

--Gets page content (kinda self-explanatory imo)
local function getPageContent(page)
	local title = mw.title.new(page)
	if not title then return nil end
	return title:getContent()
end

--Parses the page which contains the table so it only grabs the tip text
local function parseTableContent(content)
	local rows = {}
	local inRow = false
	for line in content:gmatch("[^\r\n]+") do
		line = mw.text.trim(line)
		if line == "|-" then
			inRow = true
		elseif inRow then
			local tip = line:match("^|%s*(.+)%s*$")
			if tip then
				table.insert(rows, tip)
				inRow = false
			end
		end
	end
	return rows
end

--Main function to call the local functions and return errors if needs be
function p.main(frame)
	local rows = {}
	local page = frame.args[1]
	local content = getPageContent(page)
	if not content then return 'Page not found' end
	
	local rows = parseTableContent(content)
	if(#rows == 0) then return 'No rows found' end
    
    local index = getDailyRandomNumber(#rows)
	return rows[index]
end

return p