Module:ResolveEntityId

local p = {}

function p._entityid(_,id,alt) -- backwards compatibility for deprecated _entityid function return p._id(id,alt) end

function p._id(id,alt) if type(id) == 'string' then id = mw.ustring.upper(mw.ustring.sub(id,1,1))..mw.ustring.sub(id,2) if mw.ustring.match(id,'^Q%d+$') then -- id is in the proper format for a Wikidata entity if mw.wikibase.isValidEntityId(id) then -- id is valid id = mw.wikibase.getEntity(id) if id then -- entity exists return id.id				end end else id = mw.wikibase.getEntityIdForTitle(id) if id then -- id is a title that matches a Wikidata entity local instanceOf = mw.wikibase.getBestStatements(id, 'P31')[1] --instance of				if instanceOf and instanceOf.mainsnak.datavalue.value.id ~= 'Q4167410' then -- not disambiguation return mw.wikibase.getEntity(id).id				elseif instanceOf == nil then -- id is a title, but is missing an instance-of value return mw.wikibase.getEntity(id).id				end end end end return alt or nil end

function p.entityid(frame) return p._id(frame.args[1], frame.args[2]) end

return p