Module:Sandbox/Gonnym/episodewikidata

local getWikiDataValue = require('Module:WikidataIB').getValue
	
p = {}

local function getFormattedPreviousEpisodeLink(args)
	local previousEpisodeRaw = args.rprev or args.RPrev
	local previousEpisode = args.prev or getWikiDataValue({fetchwikidata = "ALL", onlysourced = "n", "P155"})

	local previousEpisodeLink
	if (previousEpisodeRaw) then
		previousEpisodeLink = previousEpisodeRaw
	elseif (previousEpisode) then
		previousEpisodeLink = '"' .. previousEpisode .. '"'
	else
		previousEpisodeLink = "&mdash;"
	end
end

local function getFormattedNextEpisodeLink(args)
	local nextEpisodeRaw = args.rnext or args.RNext
	local nextEpisode = args.next or getWikiDataValue({fetchwikidata = "ALL", onlysourced = "n", "P156"})

	local nextEpisodeLink
	if (nextEpisodeRaw) then
		nextEpisodeLink = nextEpisodeRaw
	elseif (nextEpisode) then
		nextEpisodeLink = '"' .. nextEpisode .. '"'
	else
		nextEpisodeLink = "&mdash;"
	end

end

function p.getEpisodeChronology(frame)
	local previousEpisodeLink = getFormattedPreviousEpisodeLink(args)
	local nextEpisodeLink = getFormattedNextEpisodeLink(args)
	
	return '! style="width:100%;" ! style="width: 50%; padding: 0.2em 0.1em 0.2em 0; text-align: center;" ! ←&nbsp;\'\'\'Previous\'\'\'<br />' .. previousEpisodeLink .. '! style="width: 50%; padding: 0.2em 0 0.2em 0.1em; text-align: center;" ! \'\'\'Next\'\'\'&nbsp;→<br />' .. nextEpisodeLink
end

local function getHeaderTitle()
	local previousEpisode = args.prev or args.rprev or args.RPrev or getWikiDataValue({fetchwikidata = "ALL", onlysourced = "n", "P155"})
	local nextEpisode = args.next or args.rnext or args.RNext or getWikiDataValue({fetchwikidata = "ALL", onlysourced = "n", "P156"})
	
	if (previousEpisode or nextEpisode) then
		return "Episode chronology"
	end
end

return p