Module:EditAtWikidata

-- Module to display an icon with a tooltip such as "Edit this at Wikidata".
-- Icon will be linked to the Wikidata entry for the article where this is placed.
-- This message is only displayed if a local_parameter is not supplied
-- i.e. when called from a template, it can be coded not to display the message
-- when a local parameter is in use, preventing the value form Wikidata being fetched.
-- The qid of a Wikidata entry can optionally be supplied for testing outside the article.
-- Usage:
-- {{#invoke:EditAtWikidata|showMessage|local_parameter}}
-- {{#invoke:EditAtWikidata|showMessage|qid=<ArticleID>|local_parameter}}

local p = {}

local i18n =
{
 ["message"] = "Edit this at Wikidata"
}

p.showMessage = function(frame)
 -- There may be a local parameter supplied, if it's blank, set it to nil
 local local_parm =  mw.text.trim(frame.args[1] or "")
 if local_parm and (local_parm == "") then local_parm = nil end

 -- If there is a local parameter used, we don't want to display the message
 if local_parm then return nil end

 -- Can take a named parameter |qid which is the Wikidata ID for the article.
 -- This will not normally be used except for testing outside the article.
 local qid = frame.args.qid
 if qid and (qid == "") then qid = nil end

 -- The module can take a parameter pid=
 -- which will create a link to that property in the Wikidata entry for the article
 local propertyID = mw.text.trim(frame.args.pid or "")

 -- Get the object containing all the claims for the article
 local entity = mw.wikibase.getEntityObject(qid)
 if entity then
  local thisQid
  if qid then thisQid = qid else thisQid = entity.id end
  return
   " [[File:OOjs UI icon edit-ltr-progressive.svg |frameless |text-top |10px |alt=" ..
   i18n.message ..
   " |link=https://www.wikidata.org/wiki/" ..
   thisQid ..
   (propertyID == "" and "" or ("#" .. propertyID)) ..
   "|" .. i18n.message .. "]]"
 end
end

return p