Moduuli:Fr:Wikidata/Outils

--Fonctions élémentaires de gestion des snaks Wikidata
local p = {}
p.i18n = require "Module:Fr:Wikidata/I18n"
local defaultlang = mw.getContentLanguage():getCode()

function p.translate(str, rep1, rep2)
	str = p.i18n or str
	if rep1 then
		str = str:gsub('$1', rep1)
	end
	if rep2 then
		str = str:gsub('$2', rep2)
	end
	return str
end 

function p.snaktype(snak)
	return snak.snaktype
end
	
function p.isSpecial(snak)
	return (snak.snaktype ~= 'value')
end

function p.isValue(snak)
	return (snak.snaktype == 'value')
end

function p.getId(snak)
	if p.isValue(snak) then
		return 'Q' .. snak.datavalue.value
	end
end

function p.getNumericId(snak)
	if p.isValue(snak) then
		return snak.datavalue.value
	end
end

function p.getMainId(claim)
	return p.getId(claim.mainsnak)
end

function p.EntityId(entity)
	if type(entity) == 'string' then
		return entity
	end
	return entity.id
end

function p.getValue(snak)
	return snak.datavalue.value
end

-- function that returns true if the "qid" parameter is the qid 
-- of the item that is linked to the calling page
function p.is_page_of_qid(qid) 
	local entity_on_its_page = false
	local self_entity = mw.wikibase.getEntity()
	if self_entity ~= nil and qid == p.EntityId(self_entity) then
		entity_on_its_page = true
	end
	return entity_on_its_page
end

function p.formatError( key , category, debug)
    if debug then
        return error(p.i18n or key)
    end
    if category then
        return "]"
    else
        return "]"
    end
end

function p.addcat(cat, sortkey)
	if sortkey then
		return  ']'
	end
	return ']'
end

function p.getEntity( val ) 
	if (mw.wikibase == nil) then
		return nil
	end
	if type(val) == 'table' then
		return val
	end
	if val == '-' then
		return nil
	end
	if val == '' then
		val = nil
	end
	return mw.wikibase.getEntityObject(val)
end

function p.splitStr(val) -- transforme en table les chaînes venant du Wikitexte qui utilisent des virgules de séparatin
	if type(val) == 'string' then
		val = mw.text.split(val, ",")
	end
	return val
end

function p.isHere(searchset, val)
	for i, j in pairs(searchset) do
		if val == j then
			return true
		end
	end
	return false
end

function p.alreadyHere(searchset, val) -- obsolète
	return p.isHere(searchset, val)
end

function p.getEntityPagename(entity)
	if (not entity) then
		return nil -- ou option de gestion des erreurs ?
	end
	local name ="d:"
	if entity == "property" then
		name = "d:Property:"
	end
	return name .. entity.id
end

function p.getEntityPagename(entity)
	if (not entity) then
		return nil -- ou option de gestion des erreurs ?
	end
	local name ="d:"
	if entity == "property" then
		name = "d:Property:"
	end
	return name .. entity.id
end

local function wikidataLink(entity)
	local name =':d:'
	
	if type(entity) == 'string' then
		if entity:match("P") then
			entity = "Property:" .. entity
		end
		return name .. entity
	elseif type(entity) == 'table' then
		if entity == "property" then
			name = ":d:Property:"
		end
		return name .. entity.id
	elseif type(entity) == nil then
		return formatError('entity-not-found')
	end
end

function p.siteLink(entity, project, lang)
	-- returns 3 values: a sitelink (with the relevant prefix) a project name and a language
	lang = lang or defaultlang
	if (type(project) ~= 'string') then
		project = 'wiki'
	end
	project = project:lower()
	if project == 'wikipedia' then
		project = 'wiki'
	end
	if type(entity) == 'string' and (project == 'wiki') and ( (not lang or lang == defaultlang) ) then -- évite de charger l'élément entier
		return  mw.wikibase.sitelink(entity), 'wiki', defaultlang
	end
	if project == 'wikidata' then
		return wikidataLink(entity), 'wikidata'
	end
	local projects = {
		-- nom = {préfixe sur Wikidata, préfix pour les liens sur Wikipédia, ajouter préfixe de langue}
		wiki = {'wiki', nil, true}, -- wikipedia
		commons = {'commonswiki', 'commons', false},
		commonswiki = {'commonswiki', 'commons', false},
		wikiquote = {'wikiquote', 'q', true},
		wikivoyage = {'wikivoyage', 'voy', true},
		wikibooks = {'wikibooks', 'b', true},
		wikinews = {'wikinews', 'n', true},
		wikiversity = {'wikiversity', 'v', true},
		wikisource = {'wikisource', 's', true},
		-- meta
		-- mediawiki
	}

	entity = p.getEntity(entity)
	if not entity then
		return nil
	end

	local projectdata = projects
	if not projectdata then -- sinon, on peut avoir des liens du type "enwiki" plutôt que "en" et lang = "wikipedia'
		for k, v in pairs(projects) do
			if project:match( k .. '$' ) 
				and mw.language.isKnownLanguageTag(project:sub(1, #project-#k))
			then
				lang = project:sub(1, #project-#k)
				projectdata = k
				break
			end
		end
		if not mw.language.isKnownLanguageTag(lang) then
			return p.formatError('invalid project code: ' .. (project or '?'))
		end
	end
	if not projectdata then
		return p.formatError('invalid project code: ' .. (project or '?'))
	end
	
	local linkcode = projectdata
	local prefix = projectdata
	local multiversion = projectdata
	if multiversion then
		linkcode = lang .. linkcode
	end
	local link = entity:getSitelink(linkcode)
	if not link then
		return nil
	end
	
	if prefix then
		link = prefix .. ':' .. link
	end
	if multiversion then
		link = ':' .. lang .. ':' .. link
	end
	return link, project, lang
end

-- add new values to a list, avoiding duplicates
function p.addnewvalues(old, new)
	if not new then
		return old
	end
	for _, j in pairs(new) do
		if not p.isHere(old, j) then
			table.insert(old, j)
		end
	end
	return old
end

return p