Module:fi-dialects

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---

local export = {}

local Group = {}

local function makeGroup(code, data)
	return data and setmetatable({ _code = code, _data = data }, Group)
end

function Group:getCode()
	return self._code
end

function Group:getFinnishName()
	return self._data.finnish or self._code
end

function Group:getEnglishName()
	return self._data.english or self._data.finnish or self._code
end

function Group:getBranch()
	return self._data.branch
end

function Group:getFormattedName()
	if self._data.english and self:getEnglishName() ~= self:getFinnishName() then
		return self:getEnglishName() .. " (" .. self:getFinnishName() .. ")"
	else
		return self:getFinnishName()
	end
end

function Group:getFormattedNameWithLink()
	if self._data.Wikipedia then
		if self._data.english then
			return "[[w:" .. self._data.Wikipedia .. "|" .. self:getEnglishName() .. "]] (" .. self:getFinnishName() .. ")"
		else
			return "[[w:" .. self._data.Wikipedia .. "|" .. self:getFinnishName() .. "]]"
		end
	else
		return self:getFormattedName()
	end
end

function Group:getWikipediaArticle()
	return self._data.Wikipedia
end

function Group:getWikidataItem()
	local item = self._data.wikidata
	if type(item) == "number" then
		return "Q" .. item
	else
		return item
	end
end

Group.__index = Group

function export.getGroup(code, nil_on_failure)
	local area_data = mw.loadData("Module:fi-dialects/data/area")
	return makeGroup(code, area_data.groups[code] or (not nil_on_failure and error("Group not found by code: " .. code) or nil))
end

local function findAreaFrom(areas, code, original_code, root, nil_on_failure)
	local area = code
	local subarea = nil
	if code:find("/") then
		local slash = code:find("/")
		area = code:sub(1, slash - 1)
		subarea = code:sub(slash + 1)
	end
	local result = areas and areas[area]
	if not result then
		if nil_on_failure then return nil end
		error("Area not found from data: " .. original_code)
	end
	if not root then
		root = result
	end
	if subarea then
		return root, findAreaFrom(result.subareas, subarea, original_code)
	end
	return root, result
end

local Area = {}

local function makeArea(code, root, data)
	return data and setmetatable({ _code = code, _root = root, _data = data }, Area)
end

function export.getArea(code, nil_on_failure)
	local area_data = mw.loadData("Module:fi-dialects/data/area")
	local subarea = nil
	if area_data.area_aliases[code] then
		code = area_data.area_aliases[code]
	end
	return makeArea(code, findAreaFrom(area_data.areas, code, code, nil, nil_on_failure))
end

function Area:getCode()
	return self._code
end

function Area:getFinnishName()
	return self._data.finnish or self._code
end

function Area:getEnglishName()
	return self._data.english or self._data.finnish or self._code
end

function Area:getFormattedName()
	if self._data.english and self:getEnglishName() ~= self:getFinnishName() then
		return self:getEnglishName() .. " (" .. self:getFinnishName() .. ")"
	else
		return self:getFinnishName()
	end
end

function Area:getFormattedNameWithLink()
	if self._data.Wikipedia then
		if self._data.english then
			return "[[w:" .. self._data.Wikipedia .. "|" .. self:getEnglishName() .. "]] (" .. self:getFinnishName() .. ")"
		else
			return "[[w:" .. self._data.Wikipedia .. "|" .. self:getFinnishName() .. "]]"
		end
	else
		return self:getFormattedName()
	end
end

function Area:getBranch()
	return self._root.branch
end

function Area:getGroupCode()
	return self._data.group or self._root.group
end

function Area:getGroup()
	return (self._data.group or self._root.group) and export.getGroup(self._data.group or self._root.group)
end

function Area:getWikipediaArticle()
	return (self._data.Wikipedia or self._root.Wikipedia)
end

function Area:getWikidataItem()
	local item = (self._data.wikidata or self._root.wikidata)
	if type(item) == "number" then
		return "Q" .. item
	else
		return item
	end
end

function Area:getSuperArea()
	if self == self._root then
		return nil
	end
	return export.getArea(mw.ustring.gsub(self._code, "/[^/]+$", ""))
end

function Area:getSubAreas()
	if self._data.subareas then
		local subareas = {}
		for key, subarea in pairs(self._data.subareas) do
			subareas[key] = makeArea(self._code .. "/" .. key, self._root, subarea)
		end
		return subareas
	end
	return {}
end

Area.__index = Area

local Parish = {}

local function makeParish(code, data)
	return data and setmetatable({ _code = code, _data = data }, Parish)
end

function export.getParish(code, nil_on_failure)
	local parish_data = mw.loadData("Module:fi-dialects/data/parish")
	return makeParish(code, parish_data.parishes[parish_data.parish_aliases[code] or code] or (not nil_on_failure and error("Parish not found by code: " .. code) or nil))
end

function Parish:getCode()
	return self._code
end

function Parish:getFinnishName()
	return self._data.finnish or self._code
end

function Parish:getEnglishName()
	return self._data.english or self._data.finnish or self._code
end

function Parish:getFormattedName()
	if self._data.english and self:getEnglishName() ~= self:getFinnishName() then
		return self:getEnglishName() .. " (" .. self:getFinnishName() .. ")"
	else
		return self:getFinnishName()
	end
end

function Parish:getWikipediaArticle(cheap)
	if self._data.Wikipedia or cheap then return self._data.Wikipedia end
	local item = self:getWikidataItem()
	if not item then return nil end
	local entity = mw.wikibase.getEntity(item)
	if not entity then return nil end
	return entity:getSitelink("enwiki")
end

function Parish:getWikidataItem()
	local item = self._data.wikidata
	if type(item) == "number" then
		return "Q" .. item
	else
		return item
	end
end

function Parish:getAreaCode()
	return self._data.area
end

function Parish:getArea()
	return export.getArea(self._data.area)
end

function Parish:getCoordinates()
	if self._data.latitude == nil or self._data.longitude == nil then
		return nil
	end
	return self._data.latitude, self._data.longitude
end

Parish.__index = Parish

return export