Module:Sandbox/Julio974fr

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local p = {};
local political_party = require('Module:Political party')
local lang = 'en'

--[[ Get a best ranking statement value from "item" with the property "property".
	 The value is returned through the function "typefunc". ]] -- Function copied from elsewhere
local function getStatementValue(item, property, typefunc)
	local statements = mw.wikibase.getBestStatements(item, property)
	if statements[1] and statements[1].mainsnak.snaktype == 'value' then
		return typefunc(statements[1].mainsnak.datavalue.value)
	end
end

--[[ The "typefunc"s - A series of functions that extract the wanted information
     from a statement value depending on the value type. ]]
local function getAmount(value) return tonumber(value.amount) end
local function getString(value) return value end
local function getItem(value)   return value.id end

function p.getAllPartiesData(electionQid, previousQid, args)
	local partiesData = p.getElectionParties(electionQid, previousQid)
	
	for partyIndex, partyData in ipairs(partiesData) do
		local fetchedPartyData = p.fetchPartyData(partyData.qid)
		
		partyData.name = fetchedPartyData.name
		partyData.color = fetchedPartyData.color
		partyData.articleTitle = fetchedPartyData.articleTitle
		
		if args['name_override_'..(partyData.qid)] then -- If name override specified
			partyData.name = args['name_override_'..(fetchedPartyData.qid)]
		end
		
		partiesData[partyIndex] = partyData
	end
	
	return partiesData
end

local function sortParties(listParties)
	local function comparePartyByVotes(partyA, partyB)
		if partyB.qid == 'Q86630688' then -- Q86630688 is 'Others'
			return true
		elseif partyA.qid == 'Q86630688' then
			return false
		elseif (partyA.votes or 0) > (partyB.votes or 0) then
			return true
		elseif (partyA.votes or 0) < (partyB.votes or 0) then
			return false
		else
			return ((partyA.seats or 0) > (partyB.seats))
		end
	end
	table.sort(listParties, comparePartyByVotes)
end

local function findPartyIndex(listParties, partyQid)
	local finalPartyIndex = nil
	for curPartyindex, curParty in ipairs(listParties) do
		if curParty.qid == partyQid then
			finalPartyIndex = curPartyindex
			break
		end
	end
	return finalPartyIndex
end

local function initPartyIndex(listParties, partyQid)
	
	local partyIndex = findPartyIndex(listParties, partyQid)
	
	if not partyIndex then
		table.insert(listParties, {qid=partyQid, votes = 0, seats = 0})
		partyIndex = #listParties
	end
	
	return partyIndex
end

local function addPartyDataFromStatement(partyData, statement)
	
	if statement.qualifiers.P1111 then
		if not partyData.votes then partyData.votes = 0 end
		partyData.votes = partyData.votes + getAmount(statement.qualifiers.P1111[1].datavalue.value)
	end
	
	if statement.qualifiers.P1410 then
		if not partyData.seats then partyData.seats = 0 end
		partyData.seats = partyData.seats + getAmount(statement.qualifiers.P1410[1].datavalue.value)
	end
	
	if statement.qualifiers.P155 then
		if not partyData.predecessors then partyData.predecessors = {} end
		for _, predecessorStatement in ipairs(statement.qualifiers.P155) do
			table.insert(partyData.predecessors, getItem(predecessorStatement.datavalue.value))
		end
	end
	
	return partyData
end

local function addPrevPartyDataFromStatement(partyData, statement)
	
	if not partyData.prevVotes then partyData.prevVotes = 0 end
	if statement.qualifiers.P1111 then
		partyData.prevVotes = partyData.prevVotes + getAmount(statement.qualifiers.P1111[1].datavalue.value)
	end
	
	if not partyData.prevSeats then partyData.prevSeats = 0 end
	if statement.qualifiers.P1410 then
		partyData.prevSeats = partyData.prevSeats + getAmount(statement.qualifiers.P1410[1].datavalue.value)
	end
	
	return partyData
end

function findPartyPredecessorOverride(listParties, partyQid, partyIndex)
	for tempIndex, tempParty in ipairs(listParties) do
		if tempParty.predecessors then
			for _, tempPredecessor in ipairs(tempParty.predecessors) do
				if tempPredecessor == partyQid then
					return tempIndex
				end
			end
		end
	end
	
	return partyIndex
end

function addPartyPredecessorsByComponents(listParties)
	for partyIndex, partyData in ipairs(listParties) do
		local allParts = mw.wikibase.getAllStatements(partyData.qid, 'P527')
		for _, predecessorStatement in ipairs(allParts) do
			if not partyData.predecessors then partyData.predecessors = {} end
			table.insert(partyData.predecessors, getItem(predecessorStatement.mainsnak.datavalue.value))
		end
		listParties[partyIndex] = partyData
	end
	return listParties
end

-- Retrieves the list of parties and sorts it by votes/seats
function p.getElectionParties(electionQid, previousQid)
	
	local listParties = {}
	
	-- For each 'candidate' in the election
	local allStatementsInElection = mw.wikibase.getAllStatements(electionQid, 'P726')
	for _, statement in ipairs(allStatementsInElection) do
		local partyQid = statement.mainsnak.datavalue.value.id
		local partyIndex = initPartyIndex(listParties, partyQid)
		listParties[partyIndex] = addPartyDataFromStatement(listParties[partyIndex], statement)
	end
	
	listParties = addPartyPredecessorsByComponents(listParties)
	
	-- For each 'candidate' in the previous election
	if previousQid then
		local allStatementsPrevElection = mw.wikibase.getAllStatements(previousQid, 'P726')
		
		for _, statement in ipairs(allStatementsPrevElection) do
			local partyQid = statement.mainsnak.datavalue.value.id
			
			local partyIndex = findPartyIndex(listParties, partyQid)
			
			partyIndex = findPartyPredecessorOverride(listParties, partyQid, partyIndex)
			
			if not partyIndex then
				partyIndex = findPartyIndex(
					listParties,
					getStatementValue(partyQid, 'P1366', getItem)
				)
			end
			
			if partyIndex then
				listParties[partyIndex] = addPrevPartyDataFromStatement(listParties[partyIndex], statement)
			end
		end
	end
	
	sortParties(listParties)
	
	return listParties
end

local function getPartyColor(qid, articleTitle)
	
	local color = getStatementValue(qid, 'P465', getString)
	if color then
		return '#'..color
	end
	
	if articleTitle == '' then
		return '#ffffff'
	end
	
	color = political_party._fetch({articleTitle, 'color'})
	color = mw.ustring.gsub(color, '&(#)35;', '%1')
	return color
end

-- For a given party, gets its name, article, and color
function p.fetchPartyData(qid)
	
	-- Get party article name
	local articleTitle, partyLabel
	articleTitle = mw.wikibase.getSitelink(qid)
	if not articleTitle then
		partyLabel = mw.wikibase.getLabel(qid)
	end
	
	-- Get party shortname
	local shortnameStatement = mw.wikibase.getBestStatements(qid, 'P2561')
	local shortname
	for i, v in ipairs(shortnameStatement) do
		if v.mainsnak.datavalue.value.language == lang then
			shortname = v.mainsnak.datavalue.value.text
		end
	end
	
	-- Make party name/link wikitext
	local nameWikitext
	if articleTitle then
		nameWikitext = '[['..articleTitle..'|'..(shortname or partyLabel or articleTitle)..']]'
	elseif partyLabel then
		nameWikitext = partyLabel
	else
		nameWikitext = '[[wikidata:'..qid..']]'
	end
	
	-- Get party color
	local color = getPartyColor(qid, articleTitle)
	
	return {
		qid=qid,
		name=nameWikitext,
		color=color,
		articleTitle=articleTitle
	}
end

function p._ch_proportional(args)
	
	-- Formatting functions (copied from Module:Election_results)
	local lang = mw.getContentLanguage()
	local function fmt(n)
		return n and tonumber(n) and lang:formatNum(tonumber(n)) or nil
	end
	
	local function pct(n, d)
		n, d = tonumber(n), tonumber(d)
		if n and d and d > 0 then
			return string.format('%.2f', n / d * 100)
		end
		return '&ndash;'
	end
	
	local function diff(n, prevN)
		if not n then
			return '&ndash;'
		elseif not prevN then
			return "''New''"
		end
		
		n, prevN = tonumber(n), tonumber(prevN)
		
		if n > prevN then
			return '+'..tostring(n-prevN)
		elseif prevN > n then
			return '−'..tostring(prevN-n)
		else
			return '±0'
		end
	end
	
	local function diffPct(n, d, prevN, prevD)
		if not n or not d then
			return '&ndash;'
		elseif not prevN then
			return "''New''"
		end
		
		n = tonumber(n) / tonumber(d)
		prevN = tonumber(prevN) / tonumber(prevD)
		
		if n > prevN then
			return '+'..string.format('%.2f', (n - prevN) * 100)
		elseif prevN > n then
			return '−'..string.format('%.2f', (prevN - n) * 100)
		else
			return '±0.00'
		end
	end
	
	
	
	local electionQid = args.qid or args.election or args[1]
	local previousElectionQid = getStatementValue(electionQid, 'P155', getItem)
	
	local cols = 0
	local year = 2023 -- TODO: Remove this and use the election's year instead
	
	local totalVotes = getStatementValue(electionQid, 'P1697', getAmount)
	
	local prevTotalVotes
	if previousElectionQid then prevTotalVotes = getStatementValue(previousElectionQid, 'P1697', getAmount) end
	
	-- Table cell functions (to avoid nesting too deep)
	local function beginTable(classes, caption)
		local root = mw.html.create('table')
		root:addClass(classes)
		
		local tableCaption = root:tag('caption')
		tableCaption:wikitext(caption)
		tableCaption:done()
		
		root:done()
		return root
	end
	
	local function addHeaderCell(row, wikitext, colspan)
		local cell = row:tag('th')
		cell:wikitext(wikitext)
		cell:attr('scope', 'col')
		if colspan then cell:attr('colspan', tostring(colspan)) end
		cell:done()
	end
	
	local function addCell(row, wikitext, align, colspan)
		local cell = row:tag('td')
		if align then cell:css('text-align', align) end
		if colspan then cell:attr('colspan', tostring(colspan)) end
		cell:wikitext(wikitext)
		cell:done()
	end
	
	local function addColorCell(row, color)
		local cell = row:tag('td')
		cell:css('width', '0px')
		cell:css('background-color', color)
		cell:done()
	end
	
	local function fillTopCell(topCell, wikitext, colspan)
		topCell:wikitext(wikitext)
		topCell:css('text-align', 'center')
		topCell:css('background', '#F8F9FA')
		topCell:attr('colspan', colspan)
		topCell:done()
	end
	
	
	
	
	
	local root = beginTable('wikitable sortable', args.caption)
	
	-- Header
	local topCell = nil
	topCell = root:tag('th')

	-- Table header
	local headerRow = root:tag('tr')
	
	addHeaderCell(headerRow, (args.partytitle or 'Party'), 2)
	addHeaderCell(headerRow, 'Votes')
	addHeaderCell(headerRow, '%')
	if previousElectionQid then addHeaderCell(headerRow, '+/−') end
	addHeaderCell(headerRow, 'Seats')
	if previousElectionQid then addHeaderCell(headerRow, '+/−') end
	
	cols = cols + 5
	if previousElectionQid then cols = cols + 2 end
	
	-- Fetch parties data
	local partiesData = p.getAllPartiesData(electionQid, previousElectionQid, args) -- TODO: Filter party name overrides instead of passing all args
	
	if topCell then
		fillTopCell(
			topCell,
			(args['image'] or require('Module:Sandbox/Julio974fr/parliament_diagram').makeParliamentDiagram(partiesData, year)),
			cols
		)
	end
	
	-- Get parties list and make the rows
	for _, party in ipairs(partiesData) do
		local row = root:tag('tr')
		
		if party.qid == 'Q86630688' then --Others
			addCell(row, 'Others', 'left', 2)
		else
			addColorCell(row, party.color)
			addCell(row, party.name)
		end
		
		mw.logObject(party)
		addCell(row, fmt(party.votes), 'right')
		addCell(row, pct(party.votes, totalVotes), 'right')
		if previousElectionQid then addCell(row, diffPct(party.votes, totalVotes, party.prevVotes, prevTotalVotes), 'right') end
		addCell(row, party.seats, 'right')
		if previousElectionQid then addCell(row, diff(party.seats, party.prevSeats), 'right') end
	end
	
	return root
end

function p.ch_proportional(frame)
	-- Initialise and populate variables
	local getArgs = require("Module:Arguments").getArgs
	local args = getArgs(frame)
	
	return p._ch_proportional(args)
end

return p