# Module:Effective protection level

local p = {}
-- Returns the permission required to perform a given action on a given title.
-- If no title is specified, the title of the page being displayed is used.
function p._main(action, pagename)
local title
if type(pagename) == 'table' and pagename.prefixedText then
title = pagename
elseif pagename then
title = mw.title.new(pagename)
else
title = mw.title.getCurrentTitle
end
pagename = title.prefixedText
if action == 'autoreview' then
local level = mw.ext.FlaggedRevs.getStabilitySettings(title)
level = level and level.autoreview
if level == 'review' then
return 'reviewer'
elseif level ~= '' then
return level
else
return nil -- not '*'. a page not being PC-protected is distinct from it being PC-protected with anyone able to review. also not '', as that would mean PC-protected but nobody can review
end
elseif action ~= 'edit' and action ~= 'move' and action ~= 'create' and action ~= 'upload' and action ~= 'undelete' then
error( 'First parameter must be one of edit, move, create, upload, undelete, autoreview', 2 )
end
if title.namespace == 8 then -- MediaWiki namespace
if title.text:sub(-3) == '.js' or title.text:sub(-4) == '.css' or title.contentModel == 'javascript' or title.contentModel == 'css' then -- site JS or CSS page
return 'interfaceadmin'
elseif title.baseText == "Gadgets-definition" then
return 'interfaceadmin'
else -- any non-JS/CSS MediaWiki page
return 'sysop'
end
elseif title.namespace == 2 and title.isSubpage then
if title.contentModel == 'javascript' or title.contentModel == 'css' then -- user JS or CSS page
return 'interfaceadmin'
elseif title.contentModel == 'json' then -- user JSON page
return 'sysop'
end
end
if action == 'undelete' then
return 'sysop'
end
local level = title.protectionLevels[action] and title.protectionLevels[action][1]
if level == 'sysop' or level == 'editprotected' then
return 'sysop'
elseif title.cascadingProtection.restrictions[action] and title.cascadingProtection.restrictions[action][1] then -- used by a cascading-protected page
return 'sysop'
elseif level == 'templateeditor' then
return 'templateeditor'
elseif action == 'move' then
local blacklistentry = mw.ext.TitleBlacklist.test('edit', pagename) -- Testing action edit is correct, since this is for the source page. The target page name gets tested with action move.
if blacklistentry and not blacklistentry.params.autoconfirmed then
return 'templateeditor'
elseif title.namespace == 6 then
return 'filemover'
elseif level == 'extendedconfirmed' then
return 'extendedconfirmed'
else
return 'autoconfirmed'
end
end
local blacklistentry = mw.ext.TitleBlacklist.test(action, pagename)
if blacklistentry then
if not blacklistentry.params.autoconfirmed then
return 'templateeditor'
elseif level == 'extendedconfirmed' then
return 'extendedconfirmed'
else
return 'autoconfirmed'
end
elseif level == 'editsemiprotected' then -- create-semiprotected pages return this for some reason
return 'autoconfirmed'
elseif level then
return level
elseif action == 'upload' then
return 'autoconfirmed'
elseif action == 'create' and title.namespace % 2 == 0 and title.namespace ~= 118 then -- You need to be registered, but not autoconfirmed, to create non-talk pages other than drafts
if title.namespace == 0 then
return 'autoconfirmed' -- Per WP:ACPERM, you need to be autoconfirmed to create pages in mainspace
end
return 'user'
else
return '*'
end
end  
setmetatable(p, { __index = function(t, k)
return function
return t._main(k, .args[1])
end
end })  
return p