local getArgs = require( 'Module:Arguments' ).getArgs

local function getImplicitDescription()
	
	local current_title = mw.title.getCurrentTitle()
	if not current_title then
		return errorMessage( 'could not getCurrentTitle' )
	end
	
	local page_content = mw.title.new( current_title ):getContent()
	if not page_content then
		return errorMessage( 'could not getContent of ' .. safePipedLink( name ) )
	end
	
	local all_templates = string.match( page_content, '{%b{}}' )
	
	return mw.text.nowiki( all_templates )
	
	--[[
	
	for m in string.gmatch( 'string', 'pattern' ) do
		mw.log( m )
	end
	
	--]]
	
	-- let's assume that implicit descriptions will generally be set by infoboxes, but could be from anywhere
	-- it would therefore makes sense to cycle through any infoboxes first
	
	--[[ get the lead infoboxes (there might be none or many) first, since they're the most likely to place any implicit description ]]
	--[[ since we will be preprocessing them, strip a bunch of stuff we definitely don't need or want ]]
	--[[ being infoboxes; there SHOULD be no references, but since when did that stop anyone? -_- ]]
	
	--local lead_infoboxes = getTransclusion( 'The Partisan#', { only = 'templates', categories = 0, references = 0, files = 0, templates = '[Ii]nfobox' } )
	--mw.log( lead_infoboxes )
	
	--[[ split the results, and loop through them ]]
	--[[ preprocess and check for a description match ]]
	--[[ if we get a hit; return the description ]]
	
	-- if we didn't get a hit...
	
	--[[ get any remaining infoboxes; multiple infoboxes is unusual, but this will unfortunately get the lead infobox again if there is one ]]
	--[[ why not just do this first? because it's much more expensive and a lot less likely to be useful ]]
	--[[ again; strip the stuff we don't need or want ]]
	
	--local all_infoboxes = getTransclusion( 'The Partisan', { only = 'templates', categories = 0, references = 0, files = 0, templates = '[Ii]nfobox' } )
	--mw.log( all_infoboxes )
	
	--[[ split the results ]]
	--[[ obviously, we don't want to preprocess the same infobox again, so ignore it ]]
	--[[ if there are any more, loop through them ]]
	--[[ preprocess and check for a description match ]]
	--[[ if we get a hit; return the description ]]
	
	-- if they weren't helpful, it's probably a good idea to stop doing this, but if you insist...
	
	--[[ get all templates that aren't {{cite*}}s; it would be nice to not get infoboxes too, but that doesn't seem possible ]]
	--[[ again; strip the stuff we don't need or want ]]
	
	--local all_other_templates = getTransclusion( 'The Partisan', { only = 'templates', categories = 0, references = 0, files = 0, templates = '-[Cc]ite' } )
	--mw.log( all_other_templates )
	
	--[[ split the results ]]
	--[[ obviously, we don't want to preprocess the infoboxes again, so ignore them ]]
	--[[ if there are any more, loop through them ]]
	--[[ preprocess and check for a description match ]]
	--[[ if we get a hit; return the description ]]
	
	-- if they didn't spit one out, we consider ourselves lucky to have survived
	-- NOTE: if there are multiple implicit descriptions being set, it's theoretically possible we could find one that's redundant
		-- I have zero intention to address this possibility
	
	--[[
	
	local current_title_lead_infobox = getTransclusion( tostring( current_title ), { only = 'templates' } )
	if not current_title_lead_infobox then
		return nil
	end
	current_title_lead_infobox = mw.text.trim( current_title_lead_infobox )
	if not current_title_lead_infobox or current_title_lead_infobox == '' then
		return nil
	end
	local current_frame = mw.getCurrentFrame()
	if not current_frame then
		return errorMessage( 'could not getCurrentFrame' )
	end
	local preprocessed_current_title_lead_infobox = current_frame:preprocess( current_title_lead_infobox )
	if not preprocessed_current_title_lead_infobox then
		return errorMessage( 'could not preprocess current_title_lead_infobox' )
	end
	-- <div class="shortdescription nomobile noexcerpt noprint searchaux" style="display:none">19th episode of the 7th season of Star Trek: Voyager</div>
	-- right at the start too :)
	return mw.text.nowiki( preprocessed_current_title_lead_infobox )
	
	--]]
end

local p = {}

function p.getImplicitDescription( frame )
	local args = getArgs( frame )
	local implicit_description = getImplicitDescription() -- this is going to be horrible
	mw.log( implicit_description )
	return implicit_description
end

local sisters = {
	'wiktionary', 'wikt',
	'wikinews', 'n',
	'wikibooks', 'b',
	'wikiquote', 'q',
	'wikisource', 's',
	'wikispecies', 'species',
	'wikiversity', 'v',
	'wikivoyage', 'voy',
	'wikimedia', 'foundation', 'wmf',
	'commons', 'c',
	'wikidata', 'd',
	'meta', 'm',
	'incubator',
	'mediawikiwiki', 'mw',
	'phabricator', 'phab'
}

function p.test( frame )
	local args = getArgs( frame )
	local name = args.name
	if name then
		local pre_colon = name:match( '^(%a+):' )
		if pre_colon then
			for i, sister in ipairs( sisters ) do
				if pre_colon == sister then
					mw.log( sister )
					return nil end
			end
		end
	end
	local foo = mw.title.new( name )
	foo = foo.redirectTarget or foo
	mw.log( foo )
end

return p