وحدة:Portal

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--[==[ This module is a Lua implementation of the old {{Portal}} template.
-- [[Module:Portal/images/z]]		- for portal names beginning with "Z".
-- [[Module:Portal/images/other]]	- for portal names beginning with any other letters. This includes numbers,
-- 									  letters with diacritics, and letters in non-Latin alphabets.
-- [[Module:Portal/images/aliases]]	- for adding aliases for existing portal names. Use this page for variations
-- 									  in spelling and diacritics, etc., no matter what letter the portal begins with.
--
-- The images data pages are separated by the first letter to reduce server load when images are added, changed, or removed.
-- Previously all the images were on one data page at [[Module:Portal/images]], but this had the disadvantage that all
-- 5,000,000 pages using this module needed to be refreshed every time an image was added or removed.
]==]

local mPagetype = require('Module:Pagetype')
local fPagetype = mPagetype.main

local p = {}

local function matchImagePage(s)
	-- Finds the appropriate image subpage given a lower-case
	-- portal name plus the first letter of that portal name.
	if type(s) ~= 'string' or #s < 1 then return end
	local firstLetter = mw.ustring.sub(s, 1, 1)
	local imagePage
	if mw.ustring.find(firstLetter, '^[اأإآبجدهوزحطيكلمنسعفصقرشتثخذضظغ]') then
		imagePage = 'Module:Portal/images/' .. firstLetter
	else
		imagePage = 'Module:Portal/images/other'
	end
	return mw.loadData(imagePage)[s]
end

local function getAlias(s)
	-- Gets an alias from the image alias data page.
	local aliasData = mw.loadData('Module:Portal/images/aliases')
	for portal, aliases in pairs(aliasData) do
		for _, alias in ipairs(aliases) do
			if alias == s then
				return portal
			end
		end
	end
	return s
end

local function getImageName(s)
	-- Gets the image name for a given string.
	if type(s) ~= 'string' or #s < 1 then
		return 'Portal-puzzle.svg'
	end
	s = mw.ustring.lower(s)
	return matchImagePage(s) or matchImagePage(getAlias(s)) or 'Portal-puzzle.svg'
end

function p._portal(portals, args)
	-- This function builds the vertical portal box used by the {{بوابة}} template.
	local root = mw.html.create('div')
		:addClass('noprint portal')
		:addClass(args.left and 'tleft' or 'tright')
		:css('border', 'solid #aaa 1px')
		:css('margin', args.margin or (args.left == 'yes' and '0.5em 1em 0.5em 0') or '0.5em 0.5em 0.5em 0')
		:newline()
 
	-- Start the table. This corresponds to the start of the wikitext table in the old [[Template:Portal]].
	local tableroot = root:tag('table')
		:css('background', '#f9f9f9')
		:css('font-size', '85%')
		:css('line-height', '110%')
		:css('max-width', '175px')
		:css('width', type(args.boxsize) == 'string' and (args.boxsize .. 'px') or nil)
 
	-- If no portals have been specified, display an error and add the page to a tracking category.
	if not portals[1] then
		root:wikitext('<li><strong class="error">خطأ في استعمال [[قالب:بوابة]]: يلزم [[س:ق#وسيط فعلي|إعطاء]] [[ن:ق#وسيط شكلي|وسيط]] واحد على الأقل.</strong></li>')
	end
 
 	local isRedandant = false --متغير لاكتشاف البوابات المكررة في شريط البوابات
	local redundantPortals = "" --متغير آخر لتخزين البوابات
	
	-- Display the portals specified in the positional arguments.
	for _, portal in ipairs(portals) do
		local image = getImageName(portal)
		portal = getAlias(portal);
		
		if string.match(redundantPortals, "ااا" .. portal .. "ااا") then --إذا كانت البوابة الثانية موجودة فعلا
			isRedandant = true
		else
			redundantPortals = redundantPortals .. "ااا" .. portal .. "ااا"
		-- Generate the html for the image and the portal name.
			tableroot
				:newline()
				:tag('tr')
					:css('vertical-align', 'middle')
					:tag('td')
						:css('text-align', 'center')
						:wikitext(string.format('[[File:%s|32x28px|alt=بوابة %s|class=noviewer|link=بوابة:%s]]', image, portal, portal))
						:done()
					:tag('td')
						:css('padding', '0 0.2em')
						:css('vertical-align', 'middle')
						:css('font-style', 'italic')
						:css('font-weight', 'bold')
						:wikitext(string.format('[[بوابة:%s|بوابة%s%s]]', portal, args['break'] and '<br />' or ' ', portal))
					:allDone()	
		end
	end
	if (isRedandant) then --إذا كان هناك بوابات مكررة
		return tostring(root) .. '[[تصنيف:صفحات_تحتوي_بوابات_مكررة_باستخدام_قالب_بوابة]]';
	else
		return tostring(root)
	end
end

function p._hPortal(portals, args)
	-- This function builds the horizontal portal box used by the {{شريط بوابات}} template.
	local root = mw.html.create('ul')
    if args['نمط'] == 'قائمة' then
               root:addClass('liste-portail')
               root:attr( 'id', 'liste-portail' )
        else
               root:addClass('bandeau-portail إعلام')
               root:attr( 'id', 'bandeau-portail' )
    end

	-- If no portals have been specified, display an error and add the page to a tracking category.
	if not portals[1] then
		root:wikitext('<li><strong class="error">خطأ في استعمال [[قالب:شريط بوابات]]: يلزم [[س:ق#وسيط فعلي|إعطاء]] [[ن:ق#وسيط شكلي|وسيط]] واحد على الأقل.</strong></li>')
	end

	local portalcats = ''
	
	local isRedandant = false --متغير لاكتشاف البوابات المكررة في شريط البوابات
	local redundantPortals = "" --متغير آخر لتخزين البوابات

	-- Display the portals specified in the positional arguments.
	for _, portal in ipairs(portals) do
		local image = getImageName(portal)
		local portalname = getAlias(portal);
		if string.match(redundantPortals, "ااا" .. portalname .. "ااا") then --إذا كانت البوابة الثانية موجودة فعلا
			isRedandant = true
		else --إذا لم تكن البوابة موجودة في المتغير
			redundantPortals = redundantPortals .. "ااا" .. portalname .. "ااا"

            portalcats = portalcats .. string.format('[[تصنيف:بوابة %s/مقالات متعلقة]]', portalname);

			-- Generate the html for the image and the portal name.
			root
				:newline()
				:tag('li')
					:addClass('bandeau-portail-element')
					:tag('span')
	                    :addClass('bandeau-portail-icone')
	                    :css('margin-right', '1em')
						:wikitext(string.format('[[File:%s|32x28px|alt=أيقونة بوابة|class=noviewer|link=بوابة:%s]]', image, portalname))
						:done()
					:tag('span')
						:addClass('bandeau-portail-texte')
						:wikitext(string.format('[[بوابة:%s|بوابة %s]]', portalname, portalname))
				:allDone()
		end
	end

	if fPagetype() == 'مقالة' then
		portalcats = portalcats .. '[[تصنيف:جميع_المقالات_التي_تستخدم_شريط_بوابات]]';
		if (isRedandant) then --إذا كان هناك بوابات مكررة
			portalcats = portalcats .. '[[تصنيف:مقالات_تحتوي_بوابات_مكررة]]';
		end
		return tostring(root) .. portalcats
	else
		return tostring(root)	
	end
end

function p._relatedPortal2(portals, args)
	local root = mw.html.create('ul')
        root:cssText('margin:0;display:-webkit-box;display:-webkit-flex;display:-ms-flexbox;display:flex;'
                     ..'-webkit-flex-wrap:wrap;-ms-flex-wrap:wrap;flex-wrap:wrap;-webkit-justify-content:space-around;-ms-flex-pack:distribute;'
                     ..'justify-content:space-around;-webkit-box-align:center;-webkit-align-items:center;-ms-flex-align:center;align-items:center;'
                     ..'text-align:center;font-weight:bold;list-style:none none')

        local iconeSize = '60x60'
        dims = {}
        if args['حجم'] then
           iconeSize= args['حجم']
        end
        local per_row = #portals
        if args['في_سطر'] then
           per_row= tonumber(args['في_سطر'])
        end
        local width = math.floor( 100/per_row )

	-- If no portals have been specified, display an error and add the page to a tracking category.
	if not portals[1] then
		root:wikitext('<li><strong class="error">خطأ في استعمال [[قالب:بوابات متعلقة]]: يلزم [[س:ق#وسيط فعلي|إعطاء]] [[ن:ق#وسيط شكلي|وسيط]] واحد على الأقل.</strong></li>')
	end


	-- Display the portals specified in the positional arguments.
	for _, portal in ipairs(portals) do
		local image = getImageName(portal)
		local portalname = getAlias(portal);

		-- Generate the html for the image and the portal name.
		root
			:newline()
			:tag('li')
				:cssText('box-sizing:border-box;margin:0;padding:1em .5em 0;display:inline-block;min-width:9em;'
				        ..'width:'..width..'%;vertical-align:middle')
				:wikitext(string.format('[[File:%s|%spx|link=بوابة:%s]]' , image, iconeSize, portalname)) 
				:wikitext(string.format('<br /><strong>[[بوابة:%s|%s]]</strong>', portalname, portalname))
	end

	return tostring(root)	
end

function p._relatedPortal(portals, args)
	-- This function builds the portal box used by the {{portal}} template.
	local root = mw.html.create('div')
        root:addClass('related-portals')
        root:cssText('margin-right: auto; margin-left: auto; display: table;text-align:center;')

    local iconeSize = '65x40'
    dims = {}
    if args['حجم'] then
           iconeSize= args['حجم']
    end
    
    for s in string.gmatch(iconeSize,"%d+") do table.insert(dims,s)  end
    if #dims == 1 then
    	newWidth = dims[1]
    	newHeight = dims[1]
	else
		newWidth = dims[1]
		newHeight = dims[2]
	end
	

	-- If no portals have been specified, display an error and add the page to a tracking category.
	if not portals[1] then
		root:wikitext('<li><strong class="error">خطأ في استعمال [[قالب:بوابات متعلقة]]: يلزم [[س:ق#وسيط فعلي|إعطاء]] [[ن:ق#وسيط شكلي|وسيط]] واحد على الأقل.</strong></li>')
	end


	-- Display the portals specified in the positional arguments.
	for _, portal in ipairs(portals) do
		local image = getImageName(portal)
		local portalname = getAlias(portal);

		-- Generate the html for the image and the portal name.
		root
			:newline()
			:tag('div')
				:cssText('text-align:center;width:100px;height:'..(newHeight+90)..'px;display:inline-block;')
				:tag('div')
                    :cssText('height:'..newHeight..'px;padding:8px 2px')
					:wikitext(string.format('[[File:%s|%spx|link=بوابة:%s]]' , image, iconeSize, portalname)) 
					:done()
				:tag('div')
					:cssText('height:90px;padding:8px')
					:wikitext(string.format('<strong>[[بوابة:%s|%s]]</strong>', portalname, portalname))
	end

	return tostring(root)		
end

function p._simplePortal(portals, args)
	-- If no portals have been specified, display an error and add the page to a tracking category.
	if not portals[1] then
		root:wikitext('<li><strong class="error">خطأ في استعمال [[قالب:بوابة بسيط]]: يلزم [[س:ق#وسيط فعلي|إعطاء]] [[ن:ق#وسيط شكلي|وسيط]] واحد فقط.</strong></li>')
	end

	local image = getImageName(portals[1])
	local portalname = getAlias(portals[1]);
	return string.format('[[File:%s|20px|link=بوابة:%s]]&nbsp;[[بوابة:%s|بوابة %s]]', image, portalname, portalname, portalname)
end

function p._image(portals)

	-- Wrapper function to allow getImageName() to be accessed through #invoke.
	return getImageName(portals[1])
end

local function getAllImageTables()
	-- Returns an array containing all image subpages (minus aliases) as loaded by mw.loadData.
	local images = {}
	for i, subpage in ipairs{'ا', 'أ', 'إ', 'آ', 'ب', 'ج', 'د', 'ه', 'و', 'ز', 'ح', 'ط', 'ي', 'ك', 'ل', 'م', 'ن', 'س', 'ع', 'ف', 'ص', 'ق', 'ر', 'ش', 'ت', 'ث', 'خ', 'ذ', 'ض', 'ظ', 'غ', 'other'} do
		images[i] = mw.loadData('Module:Portal/images/' .. subpage)
	end
	return images
end

function p._displayAll(portals, args)
	-- This function displays all portals that have portal images. This function is for maintenance purposes and should not be used in
	-- articles, for two reasons: 1) there are over 1500 portals with portal images, and 2) the module doesn't record how the portal
	-- names are capitalized, so the portal links may be broken.
	local lang = mw.language.getContentLanguage()
	local count = 1
	for _, imageTable in ipairs(getAllImageTables()) do
		for portal in pairs(imageTable) do
			portals[count] = lang:ucfirst(portal)
			count = count + 1
		end
	end
	return p._hPortal(portals, args)
end

function p._display1Table(portals, args)
	-- This function displays all portals that have portal images from one table. 
	local lang = mw.language.getContentLanguage()
	local firstLetter = portals[1]
	local imagePage
        local imageTable
	if mw.ustring.find(firstLetter, '^[اأإآبجدهوزحطيكلمنسعفصقرشتثخذضظغ]') then
		imagePage = 'Module:Portal/images/' .. firstLetter
	else
		imagePage = 'Module:Portal/images/other'
	end
	local count = 1
        imageTable = mw.loadData(imagePage)
	for portal in pairs(imageTable) do
			portals[count] = lang:ucfirst(portal)
			count = count + 1
	end

	return p._relatedPortal(portals, args)
end

function p._imageDupes()
	-- This function searches the image subpages to find duplicate images. If duplicate images exist, it is not necessarily a bad thing,
	-- as different portals might just happen to choose the same image. However, this function is helpful in identifying images that
	-- should be moved to a portal alias for ease of maintenance.
	local exists, dupes = {}, {}
	for _, imageTable in ipairs(getAllImageTables()) do
		for portal, image in pairs(imageTable) do
			if not exists[image] then
				exists[image] = portal
			else
				table.insert(dupes, string.format('The image "[[:File:%s|%s]]" is used for both portals "%s" and "%s".', image, image, exists[image], portal))
			end
		end
	end
	if #dupes < 1 then
		return 'No duplicate images found.'
	else
		return 'The following duplicate images were found:\n* ' .. table.concat(dupes, '\n* ')
	end
end

local function processPortalArgs(args)
	-- This function processes a table of arguments and returns two tables: an array of portal names for processing by ipairs, and a table of
	-- the named arguments that specify style options, etc. We need to use ipairs because we want to list all the portals in the order
	-- they were passed to the template, but we also want to be able to deal with positional arguments passed explicitly, for example
	-- {{portal|2=Politics}}. The behaviour of ipairs is undefined if nil values are present, so we need to make sure they are all removed.
	args = type(args) == 'table' and args or {}
	local portals = {}
	local namedArgs = {}
	for k, v in pairs(args) do
		if type(k) == 'number' and type(v) == 'string' then -- Make sure we have no non-string portal names.
			table.insert(portals, k)
		elseif type(k) ~= 'number' then
			namedArgs[k] = v
		end
	end
	table.sort(portals)
	for i, v in ipairs(portals) do
		portals[i] = args[v]
	end
	return portals, namedArgs
end

local function makeWrapper(funcName)
	-- Processes external arguments and sends them to the other functions.
	return function (frame)
		-- If called via #invoke, use the args passed into the invoking
		-- template, or the args passed to #invoke if any exist. Otherwise
		-- assume args are being passed directly in from the debug console
		-- or from another Lua module.
		local origArgs
		if type(frame.getParent) == 'function' then
			origArgs = frame:getParent().args
			for k, v in pairs(frame.args) do
				origArgs = frame.args
				break
			end
		else
			origArgs = frame
		end
		-- Trim whitespace and remove blank arguments.
		local args = {}
		for k, v in pairs(origArgs) do
			if type(v) == 'string' then
				v = mw.text.trim(v)
			end
			if v ~= '' then
				args[k] = v
			end
		end
		return p[funcName](processPortalArgs(args)) -- passes two tables to func: an array of portal names, and a table of named arguments.
	end
end

for _, funcName in ipairs{'portal','hPortal', 'relatedPortal', 'relatedPortal2', 'image', 'imageDupes', 'displayAll', 'display1Table', 'simplePortal'} do
	p[funcName] = makeWrapper('_' .. funcName)
end

return p