Module:Goon Show episode short description: Difference between revisions

Revision as of 07:36, 21 July 2022

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This module depends on the following other modules:
This Lua module is used on many pages and changes may be widely noticed. Test changes in the module's /sandbox or /testcases subpages, or in your own module sandbox. Consider discussing changes on the talk page before implementing them.
Module:Goon Show episode short description extracts data from a Goon Show episode article's Template:Infobox Goon Show episode and creates a relevant short description based on the data available.
This module implements the {{Goon Show episode short description}} template.
Usage

{{#invoke:Goon Show episode short description|getShortDescription}}
Parameter list

The parameter names use a corresponding parameter from Template:Infobox Goon Show episode to fill in the data. They are listed below.
Parameter	Corresponding infobox parameter	Description
`series_name`	`series`	The TV series name.
`episode_num`	`episode`	The episode's number.
`season_num`	`season`	The season's number.
`season_num_uk`	`series_no`	The season's number if using the British "series" term.
`not_dab`	same name	Set if the TV series name has parentheses as part of its name.
`special`	same name	Setting to "yes" will set the description as a "special episode". Any other value will replace the word "special" with the one entered. For example `\|special=recap` will set the text to "recap episode".
`limited`	same name	Set if the series is a single season series, such as miniseries or limited series and does not need a season number as part of the description.
Examples

Issues

If an article does not show the short description with the data from the infobox, make sure you entered the parameter names correctly in the infobox.
Tracking categories

--- @module
local television = {}

-- Unique suffix list.
local uniqueSuffix = {
	[1] = "st",
	[2] = "nd",
	[3] = "rd",
}

-- Common suffix.
local commonSuffix = "th"

-- Test validation.
local test = false

local descriptions = {
	no_series = {
		type = 1,
		text = "Television episode",
		category = "[[Category:Television episode articles with short description with no series name|%s]]",
	},
	only_series_name = {
		type = 2,
		text = "Episode of %s",
		category = "[[Category:Television episode articles with short description with no season number|%s]]",
	},
	season_and_series_name = {
		type = 3,
		text = "Episode of the %s %s of %s",
		category = "[[Category:Television episode articles with short description with no episode number|%s]]",
	},
	single_episode = {
		type = 4,
		text = "%s episode of the %s %s of %s",
		category = "[[Category:Television episode articles with short description for single episodes|%s]]",
	},
	multi_episodes = {
		type = 5,
		text = "%s episodes of the %s %s of %s",
		category = "[[Category:Television episode articles with short description for multi-part episodes|%s]]",
	},
	limited_series = {
		type = 6,
		text = {
			single_episode = "%s episode of %s",
			multi_episodes = "%s episodes of %s",
		},
		category = "", -- None
	},
	special_episode = {
		type = 7,
		text = "%s episode of %s",
		category = "", -- None
	},
}

-- Tracking category list.
local trackingCategories = {
	disambiguated = "[[Category:Television episode articles with short description and disambiguated page names|%s]]"
}

--- Returns a tracking category from a list by its name and adds a sort key.
--- @param typeName string The name of the category type.
--- @param useTrackingList boolean Whether to return a category from the trackingCategories list.
--- @param sortKey string The key by which to sort the page in the category.
local function getTrackingCategoryFromList(typeName, useTrackingList, sortKey)
	local category
	if useTrackingList then
		category = trackingCategories[typeName]
	else
		category = descriptions[typeName].category
	end
	return string.format(category, sortKey)
end

--- Returns true if the article name is disambiguated.
---
--- This is usually in the format of "Episode name (<TV series name>)" or "Episode name (<TV series name> episode)".
--- @param articleTitle string The name of the page.
--- @param tvSeriesName string The TV series name.
local function isDisambiguated(articleTitle, tvSeriesName)
	local disambiguation = string.match(tostring(articleTitle), "%s%((.-)%)")

	if not (disambiguation and tvSeriesName) then
		return false
	end

	-- Search for the TV series name in the article name disambiguation.
	if (string.find(disambiguation, tvSeriesName)) then
		return true
	end

	return false
end

--- Returns the sort key for the current page.
local function getSortKey()
	local sortTitleModule = require("Module:Sort title")
	return sortTitleModule._getSortKey()
end

--- Returns a tracking category depending on the type of short description created.
--- @param tvSeriesName string The TV series name.
--- @param descriptionName string
local function getTrackingCategory(tvSeriesName, descriptionName)
	local articleTitle = mw.title.getCurrentTitle()
	local namespace = articleTitle.nsText

	-- Check if the invoking page is from the allowed namespace.
	if (not (namespace == "" or namespace == "Draft" or test)) then
		return ""
	end

	local sortKey = getSortKey()
	if (isDisambiguated(articleTitle, tvSeriesName) == true) then
		local category1 = getTrackingCategoryFromList(descriptionName, false, sortKey)
		local category2 = getTrackingCategoryFromList("disambiguated", true, sortKey)
		return category1 .. category2
	end

	return getTrackingCategoryFromList(descriptionName, false, sortKey)
end


--- Returns a short description in the style of: "Television episode" and a maintenance category:
--- "Category:Television episode articles with short description with no series name".
local function getShortDescriptionNoSeries()
	local shortDescription = descriptions.no_series.text
	local category = getTrackingCategory(nil, "no_series")
	return shortDescription, category
end

--- Returns a short description in the style of: "Episode of Lost" and a maintenance category:
--- "Category:Television episode articles with short description with no season number".
--- @param tvSeriesName string The TV series name.
local function getShortDescriptionOnlySeriesName(tvSeriesName)
	local text = descriptions.only_series_name.text
	local shortDescription = string.format(text, tvSeriesName)
	local category = getTrackingCategory(tvSeriesName, "only_series_name")
	return shortDescription, category
end

--- Returns a short description in the style of: "Episode of the first season of Lost" and a maintenance category:
--- "Category:Television episode articles with short description with no episode number".
--- @param tvSeriesName string The TV series name.
--- @param seasonOrdinalNumber string The season's ordinal number.
--- @param seasonTextStyle string The text to use for seasons - either "season" or "series".
local function getShortDescriptionSeasonAndSeriesName(tvSeriesName, seasonOrdinalNumber, seasonTextStyle)
	local text = descriptions.season_and_series_name.text
	local shortDescription = string.format(text, seasonOrdinalNumber, seasonTextStyle, tvSeriesName)
	local category = getTrackingCategory(tvSeriesName, "season_and_series_name")
	return shortDescription, category
end

--- Returns a short description for a limited series in the style of: "1st episode of WandaVision" and a tracking category
--- based on the categoryKey value.
--- @param tvSeriesName string The TV series name.
--- @param episodeOrdinalNumber string The episode's ordinal number.
--- @param descriptionName string A key from the descriptions table.
local function getShortDescriptionLimitedSeries(tvSeriesName, episodeOrdinalNumber, descriptionName)
	local text = descriptions.limited_series.text[descriptionName]
	local shortDescription = string.format(text, episodeOrdinalNumber, tvSeriesName)
	local category = getTrackingCategory(tvSeriesName, descriptionName)
	return shortDescription, category
end

--- Returns a short description in the style of: "5th episode of the fourth season of Lost" and a tracking category:
--- "Category:Television episode articles with short description for single episodes".
--- @param tvSeriesName string The TV series name.
--- @param seasonOrdinalNumber string The season's ordinal number.
--- @param seasonTextStyle string The text to use for seasons - either "season" or "series".
--- @param episodeOrdinalNumber string The episode's ordinal number.
--- @param limitedSeries boolean Whether the episode belongs to a limited series.
local function getShortDescriptionSingleEpisode(tvSeriesName, seasonOrdinalNumber, seasonTextStyle, episodeOrdinalNumber, limitedSeries)
	if (limitedSeries) then
		return getShortDescriptionLimitedSeries(tvSeriesName, episodeOrdinalNumber,"single_episode")
	end

	local text = descriptions.single_episode.text
	local shortDescription =  string.format(text, episodeOrdinalNumber, seasonOrdinalNumber, seasonTextStyle, tvSeriesName)
	local category = getTrackingCategory(tvSeriesName, "single_episode")
	return shortDescription, category
end

--- Returns a short description for a multi-part episode in the style of:
--- "23rd and 24th episodes of the third season of Lost" and a tracking category:
--- "Category:Television episode articles with short description for multi-part episodes".
--- @param tvSeriesName string The TV series name.
--- @param seasonOrdinalNumber string The season's ordinal number.
--- @param seasonTextStyle string The text to use for seasons - either "season" or "series".
--- @param episodeOrdinalNumbers table A list of episode ordinal numbers.
--- @param limitedSeries boolean Whether the episode belongs to a limited series.
local function getShortDescriptionMultiEpisode(tvSeriesName, seasonOrdinalNumber, seasonTextStyle, episodeOrdinalNumbers, limitedSeries)
	local episodeText = mw.text.listToText(episodeOrdinalNumbers)

	if (limitedSeries) then
		return getShortDescriptionLimitedSeries(tvSeriesName, episodeText, "multi_episodes")
	end

	local text = descriptions.multi_episodes.text
	local shortDescription = string.format(text, episodeText, seasonOrdinalNumber, seasonTextStyle, tvSeriesName)
	local category = getTrackingCategory(tvSeriesName, "multi_episodes")
	return shortDescription, category
end

--- Returns a short description for a special episode in the style of:
--- "Special episode of Lost" or "<value> episode of Lost" and a tracking category:
--- "Category:Television episode articles with short description for single episodes".
--- @param tvSeriesName string The TV series name.
--- @param special string The type of special episode. A "yes" value defaults to "Special".
local function getShortDescriptionSpecialEpisode(tvSeriesName, special)
	if (special == "yes" or special == "y") then
		special = "Special"
	end
	local text = descriptions.special_episode.text
	local shortDescription = string.format(text, special, tvSeriesName)
	local category = getTrackingCategory(tvSeriesName, "single_episode")
	return shortDescription, category
end

--- Returns a short description based on the description type passed.
--- @param descriptionType number A description type number.
--- @param tvSeriesName string The TV series name.
--- @param seasonOrdinalNumber string The season's ordinal number.
--- @param seasonTextStyle string The text to use for seasons - either "season" or "series".
--- @param episodeOrdinalNumbers table A list of episode ordinal numbers.
--- @param specialEpisode string The type of special episode.
--- @param limitedSeries boolean Whether the episode belongs to a limited series.
local function getShortDescriptionByType(
		descriptionType, tvSeriesName, seasonOrdinalNumber, seasonTextStyle, episodeOrdinalNumbers, specialEpisode, limitedSeries)
	if descriptionType == descriptions.no_series.type then
		return getShortDescriptionNoSeries()
	elseif descriptionType == descriptions.only_series_name.type then
		return getShortDescriptionOnlySeriesName(tvSeriesName)
	elseif descriptionType == descriptions.season_and_series_name.type then
		return getShortDescriptionSeasonAndSeriesName(tvSeriesName, seasonOrdinalNumber, seasonTextStyle)
	elseif descriptionType == descriptions.single_episode.type then
		return getShortDescriptionSingleEpisode(
                tvSeriesName, seasonOrdinalNumber, seasonTextStyle, episodeOrdinalNumbers[1], limitedSeries)
	elseif descriptionType == descriptions.multi_episodes.type then
		return getShortDescriptionMultiEpisode(
				tvSeriesName, seasonOrdinalNumber, seasonTextStyle, episodeOrdinalNumbers, limitedSeries)
	elseif descriptionType == descriptions.special_episode.type then
		return getShortDescriptionSpecialEpisode(tvSeriesName, specialEpisode)
	else
		return ""
	end
end

--- Returns the type of the description to use.
--- @param tvSeriesName string The TV series name.
--- @param seasonOrdinalNumber string The season's ordinal number.
--- @param episodeOrdinalNumbers table A list of episode ordinal numbers.
--- @param specialEpisode string The type of special episode.
--- @param limitedSeries boolean Whether the episode belongs to a limited series.
local function getDescriptionType(tvSeriesName, seasonOrdinalNumber, episodeOrdinalNumbers, specialEpisode, limitedSeries)
	if (not tvSeriesName) then
		return descriptions.no_series.type
	end

	if (specialEpisode) then
		return descriptions.special_episode.type
	end

	if (not seasonOrdinalNumber and not limitedSeries) then
		return descriptions.only_series_name.type
	end

	if (#episodeOrdinalNumbers < 1) then
		return descriptions.season_and_series_name.type
	end

	if (#episodeOrdinalNumbers == 1) then
		return descriptions.single_episode.type
	end

	if (#episodeOrdinalNumbers > 1) then
		return descriptions.multi_episodes.type
	end
end

--- Returns true if the TV series is a limited series.
--- @param limitedSeries string Any value will be considered as true.
local function isLimitedSeries(limitedSeries)
	if (limitedSeries) then
		return true
	end
	return false
end

--- Returns the ordinal indicator for an integer between 0 and 100.
---
--- Numbers "1", "2" and "3" have unique suffixes.
--- Numbers between 4 and 20 have the same common suffix - "th".
--- Numbers ending with 0 have the same common suffix - "th".
--- @param number number A number value.
local function getOrdinalIndicatorLessThan100(number)
	local suffix
	while (not suffix) do
		-- Check if the number equals 0; This should never be a valid entry. Assign suffix as an empty string.
		if (number == 0) then
			suffix = ""
		-- Check if the number is less than 4; Numbers "1", "2" and "3" have unique suffixes.
		elseif (number < 4) then
			suffix = uniqueSuffix[number]
		-- Check if the number is more than 4 AND less than 20; These numbers all have the same common suffix.
		elseif (number < 20) then
			suffix = commonSuffix
		-- Check if the remainder after division of the number by 10 equals 0.
		elseif (number % 10 == 0) then
			suffix = commonSuffix
		else
			-- Numbers that are above 20 and which their remainder doesn't equal 0 (such as 45).
			-- Remainder after division of the number by 10; So if the current number is 45, the new number is 5.
			number = number % 10
		end
	end
	return suffix
end

--- Returns the ordinal indicator for an integer between 0 and 1000.
--- @param number number A number value.
local function getOrdinalIndicatorLessThan1000(number)
	if (number < 100) then
		return getOrdinalIndicatorLessThan100(number)
	elseif (number % 100 == 0) then
		return commonSuffix
	else
		-- Numbers that are above 100 and which their remainder doesn't equal 0 (such as 345).
		-- Pass the remainder after division of the number by 100 (So for 345, it would pass 45) as the parameter.
		return getOrdinalIndicatorLessThan100(number % 100)
	end
end

--- Returns a table of episode numbers.
---
--- Episode values may be of multipart episodes, in such situations, an episode may be seperated by one of the following:
--- ",", "/", "&", "-", "–", "and".
--- Decimal values and episode overall values sometimes erroneously used are removed.
--- @param number string A number value in string format.
local function cleanEpisodeNumber(number)
	if (not number) then
		return {}
	end

	number = string.gsub(number, "%(.*%)", " ")
	number = string.gsub(number, "%.%d+", " ")

	local numbers = {}
	for digits in string.gmatch(number, "%d+") do
		table.insert(numbers, tonumber(digits))
	end
	return numbers
end

--- Returns a table of episode ordinal numbers.
---
--- In most situations there will be only one episode, but this can support more.
--- @param episodeNumber number The episode's number.
local function getEpisodeOrdinalNumbers(episodeNumber)
	local episodeNumbers = cleanEpisodeNumber(episodeNumber)

	if (#episodeNumbers < 1) then
		return episodeNumbers
	end

	local episodeOrdinals = {}
	for _, cleanedEpisodeNumber in pairs(episodeNumbers) do
		local ordinalIndicator = getOrdinalIndicatorLessThan1000(cleanedEpisodeNumber)
		table.insert(episodeOrdinals, cleanedEpisodeNumber .. ordinalIndicator)
	end

	return episodeOrdinals
end

--- Returns true if the season number value is a number.
--- @param seasonNumber string The season number value in string format.
local function validateSeasonNumber(seasonNumber)
	if (tonumber(seasonNumber)) then
		return true
	else
		return false
	end
end

--- Returns the season's ordinal number, or nil if no season number was set.
--- @param seasonNumber string The season number.
local function getSeasonOrdinalNumber(seasonNumber)
	if (seasonNumber) then
		local convertNumeric = require("Module:ConvertNumeric")
		return convertNumeric.spell_number2({num = seasonNumber, ordinal = true})
	end
	return nil
end

--- Returns a season number after removing from it unwanted characters.
---
--- This is done to make sure that no malformed season values have been entered.
--- The function will remove all text which is not part of the first number in the string.
---
--- The function converts entries such as:
--- "1.2" -> "1"
--- "12.2" -> "12"
--- @param seasonNumber string The season number value in string format.
local function cleanSeasonNumber(seasonNumber)
	if (seasonNumber) then
		return string.match(seasonNumber, "%d+")
	end
	return nil
end

--- Returns the season number after or cleaning it from unwanted values and validating value is a number.
--- Also returns the text style to use - either "season" or "series".
--- If no value was entered or if value was not a number, return nil.
--- @param seasonNumber string The season number.
--- @param seasonNumberUK string The season number, if UK style was used.
local function getSeasonNumberAndTextStyle(seasonNumber, seasonNumberUK)
    for _, v in ipairs({{seasonNumber, "season"}, {seasonNumberUK, "series"}}) do
        local cleanedSeasonNumber = cleanSeasonNumber(v[1])
        if (validateSeasonNumber(cleanedSeasonNumber)) then
            return cleanedSeasonNumber, v[2]
        end
    end
	return nil
end

--- Returns the TV series title without disambiguation, or nil if no TV series name was set.
--- @param tvSeriesName string The TV series name.
--- @param notDab string If set, the parenthesis in the title is not disambiguation.
local function getTVSeriesName(tvSeriesName, notDab)
	if (tvSeriesName) then
		if (not notDab) then
			return string.gsub(tvSeriesName, "%s+%b()$", "", 1, false)
		end
		return tvSeriesName
	end
	return nil
end

--- Returns the initial values after removing unwanted characters.
--- @param args table The values that should be processed.
local function cleanValues(args)
	for _, v in ipairs({"episode_num", "season_num", "season_num_uk", "series_name"}) do
		if (args[v]) then
			args[v] = args[v]:gsub("\127[^\127]*UNIQ%-%-(%a+)%-%x+%-QINU[^\127]*\127", "")	-- Remove all strip-markers.
			args[v] = args[v]:gsub("</? *br */?>", " ")					-- Replace <br /> (and variants) with space character.
			args[v] = args[v]:gsub("%b<>[^<]+%b<>", "")					-- Remove html markup.
			args[v] = args[v]:gsub("%b<>", "")							-- Remove self-closed html tags.
			args[v] = args[v]:gsub("%[%[[^|]+|([^%]]+)%]%]", "%1")		-- Remove wiki-link retain label.
			args[v] = args[v]:gsub("%[%[([^%]]+)%]%]", "%1")			-- Remove wiki-link retain article.
			args[v] = args[v]:gsub("%[%S+ +([^%]]-)%]", "%1")			-- Remove URLs retain label.
			args[v] = args[v]:gsub("%[[^%]]-%]", "")					-- Remove all remaining URLs.

			if (args[v] == "") then										-- Check if the value is an empty string.
				args[v] = nil											-- The value is an empty string; Set it to nil.
			end
		end
	end
	return args
end

--- Public function - main process.
--- @param frame table The frame invoking the module.
--- @param args table The key-value parameters passed to the module.
function television._getShortDescription(frame, args)
	args = cleanValues(args)
	local tvSeriesName = getTVSeriesName(args.series_name, args.not_dab)
    local seasonNumber, seasonTextStyle = getSeasonNumberAndTextStyle(args.season_num, args.season_num_uk)
	local seasonOrdinalNumber = getSeasonOrdinalNumber(seasonNumber)
	local episodeOrdinalNumbers = getEpisodeOrdinalNumbers(args.episode_num)
	local limitedSeries = isLimitedSeries(args.limited)
	local descriptionType = getDescriptionType(
			tvSeriesName,
			seasonOrdinalNumber,
			episodeOrdinalNumbers,
			args.special,
			limitedSeries
	)

	local shortDescription, trackingCat = getShortDescriptionByType(
			descriptionType,
			tvSeriesName,
			seasonOrdinalNumber,
            seasonTextStyle,
			episodeOrdinalNumbers,
			args.special,
			limitedSeries
	)

	-- Check if the invoking page is from /testcases or /doc pages.
	if (args.test) then
		return shortDescription, trackingCat
	elseif (args.doc) then
		return shortDescription
	else
		local tableData = {shortDescription, "noreplace"}
		return frame:expandTemplate({title = "short description", args = tableData}) .. trackingCat
	end
end

--- Public function which is used to create a television episode's short description
--- from the data available in [Template:Infobox television episode].
--- A suitable description will be generated depending on the values of the various parameters.
--- See documentation for examples.
---
--- Parameters:
--- |episode_num=		— optional; The episode's number.
--- |season_num=		— optional; The season's number.
--- |season_num_uk=		— optional; The season's number if using the British "series" term.
--- |series_name=		— optional; The TV series name.
--- |not_dab=			— optional; Set if the TV series name has parentheses as part of its name.
--- |special=			— optional; Setting to "yes" will set the description as a "special episode".
---							Any other value will replace the word "special" with the one entered.
---							For example "special=recap" will create "recap episode".
---	|limited=			— optional; Set if the series is a single season series, such as miniseries or limited series
---							and does not need a season number as part of the description.
--- @param frame table The frame invoking the module.
function television.getShortDescription(frame)
	local getArgs = require("Module:Arguments").getArgs
	local args = getArgs(frame)
	return television._getShortDescription(frame, args)
end


--- Public function which is used for testing output only.
--- @param frame table The frame invoking the module.
function television.test(frame)
	local getArgs = require("Module:Arguments").getArgs
	local args = getArgs(frame)

	test = args.test
	local shortDescription, categories = television._getShortDescription(frame, args)

	if (test == "cat") then
		return categories
	else
		return shortDescription
	end
end

return television
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