Editing Module:Products

require('Module:Mw.html extension')
local Array = require('Module:Array')
local currency = require('Module:Currency').parse
local yesno = require('Module:Yesno')

local p = {}

function p.main(frame)
	return p._main(frame:getParent().args)
end

local function recipe_sort(recipe_a, recipe_b)
	-- Sort unknown levels to the end
	if (recipe_a.level == nil) ~= (recipe_b.level == nil) then
		return recipe_b.level == nil
	end

	if recipe_a.level ~= nil then
		return recipe_a.level < recipe_b.level
	end

	-- Sort by name if same level
	return recipe_a.output[1].name < recipe_b.output[1].name
end

function p._main(args)
	args = args or {}
	local item = args[1] or mw.title.getCurrentTitle().text
	local showPrices = yesno(args.showPrices)
	local showValues = yesno(args.showValues)
	local limit = tonumber(args.limit or 0) or 0
	if limit <= 0 then
		limit = 500
	end

	-- Query for data
	local smw_data = mw.smw.ask{
		'[[Uses item::' .. item .. ']]',
		'?Uses item',
		'?Recipe JSON',
		showValues and '?Value',
		limit = limit
	}
	if not smw_data then
		return ":''No products found. To force an update, click "
				..purge('dml-'..mw.uri.anchorEncode(item), 'here', 'span')
				..".''[[Category:Empty products lists]]"
	end

	-- Create a list of all recipes, grouped by output item (to keep them together in the sort)
	local produced_items = {}
	for _, product in ipairs(smw_data) do
		local jsons = product['Recipe JSON']
		if type(jsons) == 'string' then
			jsons = { jsons }
		end
		local parsed = {}
		for _, json in ipairs(jsons) do
			local json = mw.text.jsonDecode(json)
			json.Value = product.Value
			-- Filter out when this item isn't actually used (Will happen on pages with multiple recipes)
			if Array.any(json.materials, function(mat)
				return mat.name == item
			end) then
				table.insert(parsed, json)
			end
		end
		table.sort(parsed, recipe_sort)
		table.insert(produced_items, parsed)
	end

	-- Sort by the smallest recipe in the group
	table.sort(produced_items, function(item1, item2)
		local first1 = item1[1]
		local first2 = item2[1]
		if (first1 == nil) ~= (first2 == nil) then
			return first2 == nil
		end
		if first1 == nil then
			return false  -- Both empty, equivalent
		end

		return recipe_sort(first1, first2)
	end)

	-- Flatten into a single list
	local recipes = {}
	for _, product in ipairs(produced_items) do
		for _, json in ipairs(product) do
			table.insert(recipes, json)
		end
	end

	-- Calculate shop prices
	if showPrices then
		local price_cache = {}
		for _, recipe in ipairs(recipes) do
			for _, item in ipairs(recipe.materials) do
				-- Extract item name and quantity from the "item,#" format

				-- Query for the shop buy price of the item
				local shopPriceResult = price_cache[item.name] or mw.smw.ask{
					'[[Sold item::' .. item.name .. ']]',
					'?Shop buy price'
				} or {}
				price_cache[item.name] = shopPriceResult
				local shopPrice

				if shopPriceResult[1] then
					shopPrice = tonumber(shopPriceResult[1]['Shop buy price'] or 0) or 0
				end

				-- Update the product with the total price
				if shopPrice ~= nil then
					item.price = shopPrice * item.quantity
				end
			end
		end
	end

	-- Create table
	local out = mw.html.create('table')
		:addClass('wikitable align-right-1 sortable')
		:tag('tr')
			:tag('th')
				:attr{ colspan = '3' }
				:wikitext('Recipe')
			:done()
			:tag('th'):wikitext('Level'):done()
			:IF(showValues)
				:tag('th'):wikitext('Value'):done()
			:END()
			:tag('th'):wikitext('Ingredients'):done()
			:IF(showPrices)
				:tag('th'):wikitext('Price'):done()
			:END()
		:done()

	for _, recipe in ipairs(recipes) do
		local row = out:tag('tr')
			:tag('td')
				:css{ ['border-right'] = '0', ['padding-right'] = '0' }
				:attr{ ['data-sort-value'] = recipe.output[1].name }
				:wikitext(recipe.output[1].quantity .. ' &times;')
			:done()
			:tag('td')
				:addClass('plinkt-image no-border')
				:css{ ['border-left'] = '0', ['padding-left'] = '0' }
				:wikitext('[[File:' .. recipe.output[1].name .. '.png|link=' .. recipe.output[1].name .. '|30px]]')
			:done()
			:tag('td')
				:addClass('plinkt-link no-border')
				:wikitext('[[' .. recipe.output[1].name .. ']]')
			:done()
			:tag('td')
				:IF(recipe.profession)
					:wikitext(('[[File:%s small icon.png|15px|link=%s]] %s'):format(recipe.profession, recipe.profession, recipe.level or 'Unknown'))
				:ELSE()
					:wikitext(('[[FileUnknown profession small icon.png|15px|link=Professions]] %s'):format(recipe.level or 'Unknown'))
				:END()
			:done()

		if showValues then
			if recipe.Value then
				row:tag('td')
					:wikitext(currency(recipe.Value))
				:done()
			else
				row:tag('td')
					:attr{ ['data-sort-value'] = '' }
					:wikitext('Unknown')
				:done()
			end
		end

		local ingredients = row:tag('td')
			:attr{ ['data-sort-value'] = table.concat(Array.map(recipe.materials, function(item) return item.name end), '\0') }
			:tag('ul')
				:css{ ['list-style'] = 'none', ['margin'] = '0', ['padding-left'] = '0' }

		for _, item in ipairs(recipe.materials) do
			ingredients:tag('li')
				:wikitext(('%s &times; [[File:%s.png|link=%s|18px]] [[%s]]'):format(item.quantity, item.name, item.name, item.name))
			:done()
		end

		if showPrices then
			local prices = row:tag('td')
				:tag('ul')
					:css{ ['list-style'] = 'none', ['margin'] = '0', ['padding-left'] = '0' }

			for _, item in ipairs(recipe.materials) do
				if item.price then
					prices:tag('li'):wikitext(currency(item.price)):done()
				else
					prices:tag('li'):wikitext('Unknown'):done()
				end
			end
		end

	end

	return out
end

return p