Mòdul:Proves/Albertvillanovadelmoral/Wikidata

local i18n = {
    ["errors"] = {
        ["property-param-not-provided"] = "Falta el paràmetre de la propietat.",
        ["qualifier-property-param-not-provided"] = "Falta el paràmetre de la propietat del qualificador.",
        ["entity-not-found"] = "Entitat no trobada.",
        ["unknown-claim-type"] = "Tipus d'afirmació (claim) desconegut.",
        ["unknown-snak-type"] = "Tipus de connector (snak) desconegut.",
        ["unknown-datavalue-type"] = "Tipus de valor (datavalue) desconegut.",
        ["unknown-entity-type"] = "Tipus d'entitat desconegut.",
        ["unknown-value-module"] = "You must set both value-module and value-function parameters.",
        ["value-module-not-found"] = "The module pointed by value-module not found.",
        ["value-function-not-found"] = "The function pointed by value-function not found."
    },
    ["somevalue"] = "''valor desconegut''",
    ["novalue"] = "''cap valor aplicable''"
}
 
function getEntityFromId( id )
    return mw.wikibase.getEntity() --TODO support for getting other entities
end

function getClaims( args ) -- returns a table of the claims (TODO: matching some conditions given in args)
    if not args.property then
        return formatError( 'property-param-not-provided' )
    end
    --Get entity
    local entity = nil
    local property = string.lower(args.property)
    if args.entity and type( args.entity ) == "table" then
        entity = args.entity
    else
        entity = getEntityFromId( args.entityId )
    end
 
    if not entity or not entity.claims or not entity.claims[property] then
        return nil
    end
	return entity.claims[property]
end

function numOfClaims( claims )
	if type(claims) ~= "table" then
		return 0
	elseif claims == {} then 
		return 0
	elseif claims[0] then -- taula Wikibase no modificada amb una clau 0
		return #claims + 1
	else
		return #claims
	end
end

function getDatavalue(snak, formatting)
	if snak.snaktype ~= 'value' then 
		return nil
	end
	datatype = snak.datavalue.type
 
	if datatype == 'wikibase-entityid' then
		if formatting == 'raw' then 
			return "Q" .. tostring(snak.datavalue.value['numeric-id'])
		elseif formatting == 'label' then
			return mw.wikibase.label( "Q" .. tostring(snak.datavalue.value['numeric-id']) )
		elseif formatting == 'sitelink' then
			return mw.wikibase.sitelink( "Q" .. tostring(snak.datavalue.value['numeric-id']) )
		else
			return formatEntityId("Q" .. tostring(snak.datavalue.value['numeric-id']))
		end
 
	elseif datatype == 'string' then
		local astring = snak.datavalue.value
		if formatting == 'weblink' then 
			return '[' .. astring ..  ' ' ..  mw.text.split( astring, '//' )[2] .. ']'
		elseif mw.ustring.find( (formatting or ''), '$1', 1, true ) then -- formatting = a pattern
			return mw.ustring.gsub( formatting, '$1', astring ) .. '' --Hack to get only the first result of the function
		else
			return astring
		end
 
	elseif datatype == 'time' then -- format example: +00000002013-02-15T00:00:00Z
		local d = snak.datavalue.value.time
		local lang = mw.getContentLanguage()
		if formatting == 'year' then 
			return lang:formatDate("Y", string.sub(d, 9, 18)) -- format aaaa
		else
			return lang:formatDate("j F Y", string.sub(d, 9, 18)) -- default format dd mes aaaa
		end
 
	elseif datatype == 'globecoordinate' then
		local coord = snak.datavalue.value
		local globetable = { Q2 = 'earth', Q111 = 'mars', Q405 = 'moon'}
		coord.globe = globetable[mw.text.split( snak.datavalue.value.globe, 'wiki/' )[2]] -- http://www.wikidata.org/wiki/Q2
		if coord.globe == '' or coord.globe == nil then
			coord.globe = 'earth'
		end
		if formatting == 'latitude' then
			return coord.latitude
		elseif formatting == 'longitude' then
			return coord.longitude
		elseif formatting == 'dimension' then
			return coord.dimension
		else
			return coord.globe
		end
 
	else 
		return formatError( 'unknown-datavalue-type' )
	end
end

function getEntityIdFromValue( value )
    if value['entity-type'] == 'item' then
        return 'q' .. value['numeric-id']
    elseif value['entity-type'] == 'property' then
        return 'p' .. value['numeric-id']
    else
        return formatError( 'unknown-entity-type' )
    end
end
 
function formatError( key )
    return '<span class="error">' .. i18n.errors[key] .. '</span>'
end
 
function formatStatement( statement, options )
    if not statement.type or statement.type ~= 'statement' then
        return formatError( 'unknown-claim-type' )
    end
 
    return formatSnak( statement.mainsnak, options )
    --TODO reference and qualifiers
end
 
function formatQualifier ( qualifiers, qualifierProperty, options )
    if not qualifiers[qualifierProperty] then
		return nil
	end
	return formatSnak( qualifiers[qualifierProperty][0], options )
end

function formatSnak( snak, options )
    if snak.snaktype == 'somevalue' then
        return i18n['somevalue']
    elseif snak.snaktype == 'novalue' then
        return i18n['novalue']
    elseif snak.snaktype == 'value' then
        return getDatavalue( snak, options.formatting )
    else
        return formatError( 'unknown-snak-type' )
    end
end
 
function formatEntityId( entityId )
	local label = mw.wikibase.label( entityId )
	local link = mw.wikibase.sitelink( entityId )
	if link then
		if label then
			return '[[' .. link .. '|' .. label .. ']]'
		else
			return '[[' .. link .. ']]'
		end
	else
		return '[[wikidata:' ..  entityId .. '|' .. (label or entityId) .. ']]'
	end
end

local p = {}
 
-- Return the label (for the current site) for a given data item.
function p.getLabel( frame )
    if frame.args[1] == nil then
        entity = mw.wikibase.getEntity()
        if not entity then
        	return nil
        end
        id = entity.id
    else
        id = frame.args[1]
    end
 
    return mw.wikibase.label( id )
end

-- Return the site link (for the current site) for a given data item.
function p.getSiteLink( frame )
    if frame.args[1] == nil then
        entity = mw.wikibase.getEntity()
        if not entity then
        	return nil
        end
        id = entity.id
    else
        id = frame.args[1]
    end
 
    return mw.wikibase.sitelink( id )
end

-- Return the statements with a format
function p.formatStatements( frame ) -- Format statement and concat them cleanly
	local args = frame.args
 
	--If a value is already set, use it
	if args.value and args.value ~= '' then
		return args.value
	end

	local rawStatements = getClaims( args )
	if not rawStatements or numOfClaims(rawStatements) == 0 then
		return nil
	end

	--Format statement and concat them cleanly
	local sortedLabels = {} -- l'índex 0 passa a ser 1, necessari per deixar-ho ordenat
	for i, statement in pairs( rawStatements ) do
		sortedLabels[i+1] = statement
	end
	local formattedStatements = {}
	for i, statement in pairs( sortedLabels ) do
		if args.rank == 'one' then
			return formatStatement( statement, args ) --Output only one value
		elseif args.rank == 'preferred' then --This should be set as the default case
			if #sortedLabels == 1 then
				return formatStatement( statement, args ) --Output the only value
			else
				if statement.rank == 'preferred' then
					table.insert( formattedStatements, formatStatement( statement, args ) ) --Output only the preferred values
				end
			end
		else
			table.insert( formattedStatements, formatStatement( statement, args ) )
		end
	end
 	table.sort(formattedStatements)--Sort output
	return mw.text.listToText( formattedStatements, args.separator, args.conjunction )
end

--Return the qualifiers wth a format
function p.formatQualifiers( frame )
	local args = frame.args
	--If a value is already set, use it
	if args.value and args.value ~= '' then
		return args.value
	end
	--Required parameters
	local property = args.property
	local qualifierProperty = args.qualifierProperty
	if not property then
    	return formatError( 'property-param-not-provided' )
    end
	if not qualifierProperty then
    	return formatError( 'qualifier-property-param-not-provided' )
    end
	--Get statements
	local rawStatements = getClaims( args )
	if not rawStatements or numOfClaims(rawStatements) == 0 then
		return nil
	end
	--Format statement and concat them cleanly
	local sortedStatements = {} -- l'índex 0 passa a ser 1, necessari per deixar-ho ordenat
	for i, statement in pairs( rawStatements ) do
		sortedStatements[i+1] = statement
	end
	
	local formattedQualifiers = {}
	for i, statement in pairs( sortedStatements ) do
		if not statement.qualifiers then
			return nil
		end
		if args.rank == 'one' then
			return formatQualifier( statement.qualifiers, qualifierProperty, args )
		elseif args.rank == 'preferred' then --This should be set as the default case
			if #sortedStatements == 1 then
				return formatQualifier( statement.qualifiers, qualifierProperty, args ) --Output the only value
			else
				if statement.rank == 'preferred' then
					table.insert( formattedQualifiers, formatQualifier( statement.qualifiers, qualifierProperty, args ) ) --Output only the preferred values
				end
			end
		else
			table.insert( formattedQualifiers, formatQualifier( statement.qualifiers, qualifierProperty, args ) )
		end
	end
	
	return mw.text.listToText( formattedQualifiers, args.separator, args.conjunction )
end

return p