Documentation icon دستاویز [تخلیق]
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
    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 "Using of template Commonscat in the namespace in which you have clicked to the link that lead you here is not allowed (only allowed namespaces are 0, 6, 14, and 100)."
    end
    local entity = mw.wikibase.getEntityObject()
    if not entity then -- no Wikidata item
        return "not in Wikidata"
    end
    local claims = entity.claims or {}
    local hasProp = claims[property]
    if not hasProp then -- no claim of that property
        return "not in Wikidata" -- bad. Bot needs to add the property
    end
    local propValue = hasProp[1].mainsnak.datavalue.value -- This should eventually iterate over all possible values?
    if propValue == value then
        return value -- yay!
    else
        return propValue -- needs human review :(
    end
end

return p