-- This module implements {{error}}.



local p = {}



local function _error(args)

    local tag = mw.ustring.lower(tostring(args.tag))



    -- Work out what html tag we should use.

    if not (tag == 'p' or tag == 'span' or tag == 'div') then

        tag = 'strong'

    end



    -- Generate the html.

    return tostring(mw.html.create(tag)

        :addClass('error')

        :wikitext(tostring(args.message or args1 or error('no message specified', 2)))

    )

end



function p.error(frame)

    local args

    if type(frame.args) == 'table' then

        -- We're being called via #invoke. The args are passed through to the module

        -- from the template page, so use the args that were passed into the template.

        args = frame.args

    else

        -- We're being called from another module or from the debug console, so assume

        -- the args are passed in directly.

        args = frame

    end

    -- if the message parameter is present but blank, change it to nil so that Lua will

    -- consider it false.

    if args.message == "" then

        args.message = nil

    end

    return _error(args)

end



return p