Module:ResolveEntityId

local p = {}

function p._id(idOrTitle, alt) local function checkId(id) if id and mw.wikibase.entityExists(id) then local sitelink = mw.wikibase.getSitelink(id) if sitelink then return mw.wikibase.getEntityIdForTitle(sitelink) or mw.wikibase.getEntity(id).id			end return mw.wikibase.getEntity(id).id		else return alt end end

if type(idOrTitle) == 'string' then idOrTitle = mw.ustring.upper(mw.ustring.sub(idOrTitle, 1, 1)) .. mw.ustring.sub(idOrTitle, 2) if mw.wikibase.isValidEntityId(idOrTitle) then -- idOrTitle is in the proper format for a Wikidata entity ID			return checkId(idOrTitle) else local eid = mw.wikibase.getEntityIdForTitle(idOrTitle) if eid then -- idOrTitle is a title that matches a Wikidata entity local instanceOf = mw.wikibase.getBestStatements(eid, 'P31')[1] --instance of				if not instanceOf or instanceOf.mainsnak.datavalue.value.id ~= 'Q4167410' then -- instance-of value is missing or is not "disambiguation" return checkId(eid) end else -- idOrTitle is a title, but no wikidata item exists for that title local page = mw.title.new(idOrTitle) if page then -- valid title local rtarget = page.redirectTarget if rtarget then	-- title is a Wikipedia redirect return p._id(rtarget.fullText, alt) end end end end end return alt end

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

return p