local p = {}
local getArgs = require('Module:Arguments').getArgs
local util = require("Module:Road data/util")
local yesno = require('Module:Yesno')
local langModule = require('Module:Lang')
local routeModule = require("Module:Infobox road/route")
local parserModule = require("Module:Road data/parser")
local parser = parserModule.parser
local format = mw.ustring.format
local frame = mw.getCurrentFrame()

local function country(args)
	local state = args.state or args.province
	local country
	local countryModule = mw.loadData("Module:Road data/countrymask")
	local country = args.country or countryModule[state]
	
	return country
end

-- HEADER COLORS

function p.headerStyle(frame)
	local args = getArgs(frame)
	local header 
		if args.header_type == nil then
			header = args.header_type
		else
			header = string.lower(args.header_type)
		end
		
	local deleted = args.decommissioned or args.deleted or header == "former"
	local uc = header == "under construction" or header == "const" or header == "uc"
	local minor = header == "minor"
	local hist = header == "hist" or header == "historic" or header == "historical" or header == "scenic"
	local color = parser(args, 'color') or args['header_color']
	local freeway = header == "freeway"
	
	if freeway then
		return "header-MUTCDblue"
	elseif uc then
		return "header-uc"
	elseif minor then
		return "header-minor"
	elseif deleted and header == 'hist' or deleted and color == 'hist' then
		return "header-deleted-hist"
	elseif deleted then
		return "header-deleted"
	elseif hist then
		return "header-hist"
	elseif color then
		return "header-" .. color
	elseif args.state or args.province or args.country then
		local country = country(args)
		return "header-" .. country or "header-default"
	else
		return "header-default"
	end
end

-- SECOND IMAGE

local function photo(args)
	local country = country(args)
	local photo = args.photo or args.image
	local width = args.photo_wide or args.image_width or "290px"
	local alt = args.photo_alt or args.image_alt or photo
	
	if photo == nil then
		return nil
	elseif country == "USA" then
		return nil
		else return string.format('[[File:%s|%s|alt=%s]]', photo, width, alt)
	end
end

function p.photo(frame)
	local args = getArgs(frame)
	return photo(args)
end

-- TRANSLATION

local function translate(args, lang)
	local lang = parser(args, 'lang') or args.lang or 'none'
	local translation = args.translation or parser(args, 'translation') or ''
	
	if country(args) == "PAK" and translation ~= '' then
		local route = args.route
		
		if route ~= nil then
			local arabicModule = require( "Module:Convert to eastern arabic numerals" )
			local arabic = arabicModule._convert({route})
			local translated = string.gsub( translation, route, arabic)
		
			return frame:expandTemplate{title = 'Nastaliq', args = {translated))
		else
			return frame:expandTemplate{title = 'Nastaliq', args = {translation))
		end
	elseif translation ~= '' and lang == 'none' then
		return translation
	elseif country(args) == "CHN" and args.type == "Expwy" then
		local trans = require( "Module:Road data/masks/CHN/Expwy translations" )
		local route = args.route
		
		return langModule._lang({lang, trans[route]})
	elseif country(args) == "HUN" then
		local nominal = require( "Module:Road data/masks/HUN" )
		local routeNum
		local leading
		
			if string.len(args.route) > 2 then
				routeNum = string.match(args.route, "%d%d$", 0)
				leading = string.match(args.route, "(%d*)%d%d$", 0)
			else
				routeNum = args.route
				leading = ''
			end
		
		if args.type == "M" then
			return langModule._lang({"hu", "M" .. leading .. nominal[routeNum] .. " autópálya"})
		elseif args.type == "Mb" then
			return langModule._lang({"hu", "M" .. leading .. nominal[routeNum] .. " autóút"})
		elseif args.type == "MR" then
			return langModule._lang({"hu", leading .. nominal[routeNum] .. " főút"})
		elseif args.type == "Mb" then
			return langModule._lang({"hu", leading .. nominal[routeNum] .. " közút"})
		end
	elseif lang == "ar" and translation ~= '' then
		local route = args.route
		local arabicModule = require( "Module:Convert to eastern arabic numerals" )
		local arabic = arabicModule._convert({route})
		local translated = string.gsub( translation, route, arabic)
		
		return langModule._lang({lang, translated})
	elseif translation ~= '' and lang ~= 'none' then
		return langModule._lang({lang, translation})
	else
		return nil
	end
end

function p.translate(frame)
	local pframe = frame:getParent()
    local config = frame.args -- the arguments passed BY the template, in the wikitext of the template itself
    local args = pframe.args -- the arguments passed TO the template, in the wikitext that transcludes the template
    
    local lang = config.lang
	return translate(args, lang)
end

-- MAINTAINED BY

local function maint(args)
	local maint = args.maint or parser(args, 'maint') or ''
	if maint == "none" or maint == '' then
		return nil
	else
		return "Maintained by " .. maint
	end
end

function p.maint(frame)
	local args = getArgs(frame)
	return maint(args)
end

-- DEFINED BY LAW

local function law(args)
	local law = parser(args, 'law') or ''
	if args.section == '' then
		return nil
	else
		return "Defined by " .. law
	end
end

function p.law(frame)
	local args = getArgs(frame)
	return law(args)
end

-- EXISTED

function p._existed(args)
	local formed = args.established or args.formed or ''
	local deleted = args.decommissioned or args.deleted or ''
	
	if formed == '' then
		return nil
	elseif deleted == '' then
		return formed .. "–present"
	else
		return formed .. "–" .. deleted
	end
end

function p.existed(frame)
	local args = getArgs(frame)
	return p._existed(args)
end

-- TIME PERIOD

local function period(args)
	
	local infobox_args = {}
	
	infobox_args['bodystyle'] = 'display:inline-table;'
	infobox_args['child'] = 'yes'
	infobox_args['decat'] = 'yes'
	infobox_args['label1'] = "Time period"
	infobox_args['data1'] = args.time_period
	
	if args.time_period then
		infobox_args['label2'] = "Cultural significance"
		infobox_args['data2'] = args.significance
		infobox_args['label3'] = "Known for"
		infobox_args['data3'] = args.known_for
		infobox_args['label4'] = "Related routes"
		infobox_args['data4'] = args.related
	else
		infobox_args['label3'] = "Known for"
		infobox_args['data3'] = args.known_for
	end

	return frame:expandTemplate ({title='Infobox', args = infobox_args})
end

local function period_params(args)

	if args.time_period or args.known_for then
		return true
	else
		return false
	end
end

function p.period(frame)
	local args = getArgs(frame)
	
	if period_params(args) == false then
			return nil
		else
			return period(args)
		end
	end

-- ALLOCATION

local function allocation(args)
	local country = country(args)
	
	if country == "AUS" then
		return "[[Route number#Australia|Allocation]]"
		else return "Component<br>highways"
	end
end

function p.allocation(frame)
	local args = getArgs(frame)
	return allocation(args)
end

-- SPUR OF

local function spurOf(args)
	local state = args.state or args.province
	local country = args.country
	local county = args.county
	local parentType = args.spur_type
	local parentRoute = args.spur_of
	local aux = parser(args, 'aux') or "Auxiliary route" or nil
	local jct = frame:expandTemplate{
			title = 'jct', args = {
				state = state,
				country = country,
				county1 = county,
				parentType,
				parentRoute,
				noshield1 = "yes"
			}
		}

	if not parentType and not parentRoute then
		return nil
	elseif type(aux) == "table" then
		return "Auxiliary route of " .. jct
		else return tostring(aux) .. " of " .. jct
	end
end

function p.spurOf(frame)
	local args = getArgs(frame)
	return spurOf(args)
end

-- PART OF

local function partOf(args)
	
	if args["e-road"] or args.ahn or args.tahn or args.mrn then

		local infobox_args = {}
		
		infobox_args['bodystyle'] = 'display:inline-table;'
		infobox_args['child'] = 'yes'
		infobox_args['decat'] = 'yes'

		if args["e-road"] then
			local eshield = args["e-road-shield"] or ''
			infobox_args['data1'] = eshield .. " Part of " .. args["e-road"]
		end
		if args.ahn then
			local ashield = args["ahn-shield"] or ''
			infobox_args['data2'] = ashield .. " Part of " .. args.ahn
		end
		if args.tahn then
			local tshield = args["tahn-shield"] or ''
			infobox_args['data3'] = tshield .. " Part of " .. args.tahn
		end
		if args.mrn then
			local mshield = args["mrn-shield"] or ''
			infobox_args['data4'] = mshield .. " Part of " .. args.mrn
		end
		
		return frame:expandTemplate ({title='Infobox', args = infobox_args})
		
	else return nil
	end	
end

function p.partOf(frame)
	local args = getArgs(frame)
	return partOf(args)
end

--BROWSE LINKS

local function browse(args)
	if args.nobrowse then return nil end
	
	local previousRoute = args.previous_route
	local nextRoute = args.next_route
	if previousRoute or nextRoute then
		local box = mw.html.create('table'):cssText("width:100%; background:none; border-collapse:collapse; display:inline-table;")
		local boxModule = require "Module:Road data/browse"
		local primary = boxModule._browse(args)
		box:wikitext(primary)
		return tostring(box)
	end
end

function p.browse(frame)
	local args = getArgs(frame)
	return browse(args)
end

local function extended(args)
	local extended = args.browse
	if args.nobrowse or extended == nil then
		return nil 
	else
		local box = mw.html.create('table'):cssText("width:100%; background:none; border-collapse:collapse; display:inline-table;")
		box:wikitext(extended)
		return tostring(box)
	end
end

function p.extended(frame)
	local args = getArgs(frame)
	return extended(args)
end

-- HIGHWAY SYSTEM LINKS

local function system(args)
	if args.system1 then
		
	local infobox_args = {
		['child'] = "yes",
		['decat'] = "yes",
		['bodystyle'] = "border-collapse:collapse;"
	}
		
		
	local i = 1
	while (1) do
		local systemClassn = "class" .. i
		local systemDatan = "data" .. i
		local systemArgn = args['system' .. i]
		
		infobox_args[systemClassn] = "hlist"
		infobox_args[systemDatan] = systemArgn
		
			if i == 10 then
				break
			else
				i = i + 1
			end
		end
	
	return frame:expandTemplate ({title='Infobox', args = infobox_args})
	end
end

function p.system(frame)
	local args = getArgs(frame)
	return system(args)
end

-- ROUTE INFORMATION HEADER

local function info(args)
	local maint = maint(args)
	local law = law(args)
	local period = period_params(args)
	local existed = args.established or args.formed or nil
	local spur = args.spur_type or args.spur_of or nil
	local part = partOf(args)
	
	if period == true or spur ~= nil or part ~= nil or existed ~= nil or maint ~= nil or args.section or args.length_mi or args.length_km or args.allocation or args.history or args.restrictions or args.tourist or args.status or args.margary then
		return "Route information"
	else
		return nil
	end
end

function p.info(frame)
	local args = getArgs(frame)
	return info(args)
end

-- HIGHWAY SYSTEM HEADER

local function highwaySystem(args)
	if args.nobrowse then return nil end
	local country = country(args) or args.countries
	
	if country == nil then
		return nil
	elseif country == "GBR" or country == "ENG" or country == "NIR" or country == "SCT" or country == "WLS" or
		country == "GGY" or country == "IMN" or country == "JEY" or country == "AIA" or country == "BMU" or
		country == "IOT" or country == "VGB" or country == "CYM" or country == "FLK" or country == "GIB" or
		country == "MSR" or country == "PCN" or country == "SHN" or country == "SGS" or country == "TCA" then
		return "Road network"
		else return "Highway system"
	end
end

function p.highwaySystem(frame)
	local args = getArgs(frame)
	return highwaySystem(args)
end

return p