Module:Mass notification explained

-- This module sends out notifications to multiple users.

local MAX_USERS = 50 -- The Echo user limit as of September 2015.local GROUP_PAGE_PATH = 'Module:Mass notification/groups/'local NO_NAME_ERROR = 'no group name was specified'local LOAD_ERROR = 'the group "$2" was not found'local MAX_USER_ERROR = 'attempted to send notifications to more than $1 users'local NO_USER_ERROR = 'could not find any usernames in $1'local INTRO_BLURB = 'Notifying all members of $1' .. ' (more info' .. " · " .. '

[$2 opt out]): '

local p =

local function message(msg, ...) return mw.message.newRawMessage(msg):params:plainend

local function makeWikitextError(msg) return string.format('Error: %s.', msg )end

function p.groupSubmodule(frame) -- Returns either the group link or the group name, depending on whether -- the submodule can be found. For use in edit notices. local groupName = frame.args[1] local success, data = pcall(mw.loadData, GROUP_PAGE_PATH .. groupName) if success and type(data)

'table' and data.group_page then return string.format('%s', data.group_page, groupName) else return groupName endend

function p._main(groupName) -- Validate input. if type(groupName) ~= 'string' then return makeWikitextError(NO_NAME_ERROR) end

local groupSubmodule = GROUP_PAGE_PATH .. groupName

-- Load the group submodule and check for errors. local data do local success success, data = pcall(mw.loadData, groupSubmodule) if not success then return makeWikitextError(message(LOAD_ERROR, groupSubmodule, groupName)) elseif type(data) ~= 'table' or not data[1] then -- # doesn't work with mw.loadData return makeWikitextError(message(NO_USER_ERROR, groupName)) elseif data[MAX_USERS + 1] then -- # doesn't work with mw.loadData return makeWikitextError(message(MAX_USER_ERROR, tostring(MAX_USERS))) end end

-- Make the intro blurb. local introBlurb do local optOutUrl = tostring(mw.uri.fullUrl(groupSubmodule, )) local groupLink if data.group_page then groupLink = string.format('%s', data.group_page, groupName) else groupLink = groupName end introBlurb = message(INTRO_BLURB, groupLink, optOutUrl) end

-- Make the user links. local userLinks do local userNamespace = mw.site.namespaces[2].name local links = for i, username in ipairs(data) do username = tostring(username) links[i] = string.format('', userNamespace, username ) end userLinks = string.format('

(%s)', table.concat(links, ', ') ) end

return introBlurb .. userLinksend

function p.main(frame) local args = require('Module:Arguments').getArgs(frame,) local groupName = args[1] return p._main(groupName)end

return p