Module:WikidataCheck

local p = {}

function p.wikidatacheck(frame)

   local pframe = frame:getParent()
   local config = frame.args -- the arguments passed BY the template, in the wikitext of the template itself
   local args = pframe.args -- the arguments passed TO the template, in the wikitext that transcludes the template
   
   local property = config.property
   local value = config.value or ""
   local catbase = config.category
   local namespaces = config.namespaces
   local ok = false -- one-way flag to check if we're in a good namespace
   local ns = mw.title.getCurrentTitle().namespace
   for v in mw.text.gsplit( namespaces, ",", true) do
       if tonumber(v) == ns then
           ok = true
       end
   end
   if not ok then -- not in one of the approved namespaces
       return ""
   end
   local entity = mw.wikibase.getEntityObject()
   if not entity then -- no Wikidata item
       return ""
   end
 	if value == "" then
      	return nil -- Using Wikidata

end

   local claims = entity.claims or {}
   local hasProp = claims[property]
   if not hasProp then -- no claim of that property
       return "" -- bad. Bot needs to add the property
   end
   for i, v in ipairs(hasProp) do	-- Now we try to iterate over all possible values?
   	propValue = v.mainsnak.datavalue.value
   	if propValue == value then
       	return "" -- yay!
   	end

end

   return "" -- needs human review :(

end

return p