Module:WorkshopsData

Overview

Module for compiling workshops (or production buildings as they are called in-game) information from wiki data sources. Restructures the flat data tables that are produced from CsvUtils to make them more conducive to Lua methods that need to display the information.

Usage

The standard way of using this module is a call like the following:

iconFilename = WorkshopsData.getWorkshopIcon(workshopName)

This will return a string corresponding to the filename of the icon of the workshop, including the .png extension. It is preferable to call getter methods with the name of the workshop rather than retrieving the entire record for the workshop, so that your code stays protected from variations in this module. The getter methods are all called with the plain-language name of the workshop, as spelled in the game.

longDescription = WorkshopsData.getWorkshopDescription(workshopName)
constructionCategory = WorkshopsData.getWorkshopCategory(workshopName)
sizeX, sizeY = WorkshopsData.getWorkshopSize(workshopName)
requiredGoodID, stackSize = WorkshopsData.getWorkshopRequiredGood(workshopName, requirementIndex)
timeSeconds = WorkshopsData.getWorkshopConstructionTime(workshopName)
cityScore = WorkshopsData.getWorkshopCityScore(workshopName)
isMovable = WorkshopsData.isWorkshopMoveable(workshopName)
isInitiallyEssential = WorkshopsData.isWorkshopInitiallyEssential(workshopName)
storageCap = WorkshopsData.getWorkshopStorage(workshopName)
workplaces = WorkshopsData.getWorkshopNumberOfWorkplaces(workshopName)
recipesTable = WorkshopsData.getWorkshopRecipe(workshopName, recipeIndex)
iconFilename = WorkshopsData.getWorkshopIcon(workshopName)

And the following getter methods are all called with the workshop's ID. You will have an ID instead of a display name when dealing with other game data like, recipes, goods, etc.

name = WorkshopsData.getWorkshopNameByID(workshopID)
iconFilename = WorkshopsData.getWorkshopIconByID(workshopID)

The list of workshops that can produce a particular recipe ID can be retrieved with the following method

workshopNamesTable = WorkshopsData.getWorkshopNamesWithRecipeID(recipeID)

There are methods to retrieve the lists of required goods, workplaces, and recipes, but it is advised to instead use the getter methods getWorkshopRequiredGood, getWorkshopNumberOfWorkplaces, and getWorkshopRecipe with an index desired, which is good for loops. If you must get the tables, there are three "getAll" methods:

requiredGoodsTable = WorkshopsData.getAllWorkshopRequiredGoods(workshopName)
workplacesTable = WorkshopsData.getAllWorkshopWorkplaces(workshopName)
recipesTable = WorkshopsData.getAllWorkshopRecipes(workshopName)

As a last resort, or if you need to transform the data structure, you can call the method getAllDataForWorkshop(displayName) or getAllDataForWorkshopByID(workshopID). This returns a whole record from the data table corresponding to the requested display name.

The data table for workshops has the following structure:

workshopsTable = {
	["workshop1_ID"] = {
		["id"] = "workshop1_ID",
		["displayName"] = "Plain Language Name",
		["description"] = "A long string with some HTML entities too.",
		["category"] = "Construction toolbar category",
		["sizeX"] = 9, size in tiles
		["sizeY"] = 9, size in tiles
		["requiredGoods"] = {
			[1] = { ["stackSize"] = 99, ["goodID"] = "good1_ID" },
			[2] = { ["stackSize"] = 99, ["goodID"] = "good2_ID" },
			[3] = { ... } or missing if fewer
		},
		["constructionTime"] = 99, number of seconds
		["cityScore"] = 99, points?
		["movable"] = true or false, if it can be moved at any cost
		["initiallyEssential"] = true or false, if a new-game-starting blueprint
		["storage"] = 99, capacity
		["workplaces"] = {
			[1] = "Any",
			[2] = "Any",
			[3] = "Any",
			[4] = ... representing the number of workplaces, or missing if fewer
		},
		["recipes"] = {
			[1] = "recipe1_ID",
			[2] = "recipe2_ID",
			[3] = "recipe3_ID",
			[4] = ... or missing if fewer
		}
	},
	["workshop2_ID"] = {
		...
	},
	["workshop3_ID"] = {
		...
	},
	...
}

---

---
--- Module for compiling workshops (or production buildings as they are called
--- in-game) information from wiki data sources. Restructures the flat data
--- tables that are produced from CsvUtils to make them more conducive to Lua
--- methods that need to display the information.
----
--- The standard way of using this module is a call like the following:
---
--- iconFilename = WorkshopsData.getWorkshopIcon(workshopName)
---
--- This will return a string corresponding to the filename of the icon of the
--- workshop. It is preferable to call getter methods with the name of the good
--- rather than retrieving the entire record for the good, so that your code
--- stays protected from variations in this module. The getter methods are all
--- called with the plain-language name of the good, as spelled in the game.
---
--- * longDescription = WorkshopsData.getWorkshopDescription(workshopName)
--- * constructionCategory = WorkshopsData.getWorkshopCategory(workshopName)
--- * sizeX, sizeY = WorkshopsData.getWorkshopSize(workshopName)
--- * requiredGoodsTable = WorkshopsData.getWorkshopRequiredGoods(workshopName)
--- * timeSeconds = WorkshopsData.getWorkshopConstructionTime(workshopName)
--- * cityScore = WorkshopsData.getWorkshopCityScore(workshopName)
--- * isMovable = WorkshopsData.isWorkshopMoveable(workshopName)
--- * isInitiallyEssential = WorkshopsData.isWorkshopInitiallyEssential(workshopName)
--- * storageCap = WorkshopsData.isWorkshopInitiallyEssential(workshopName)
--- * workplacesTable = WorkshopsData.getWorkshopWorkplaces(workshopName)
--- * recipesTable = WorkshopsData.getWorkshopRecipes(workshopName)
--- * iconFilename = WorkshopsData.getWorkshopIcon(workshopName)
---
--- As a last resort, or if you need to transform the data structure, you can
--- call the method getAllDataForWorkshop(displayName). This returns a whole
--- record from the data table corresponding to the requested display name.
---
--- The data table for workshops has the following structure:
---
--- workshopsTable = {
--- 	["workshop1_ID"] = {
--- 		["id"] = "workshop1_ID",
--- 		["displayName"] = "Plain Language Name",
--- 		["description"] = "A long string with some HTML entities too.",
--- 		["category"] = "Construction toolbar category",
--- 		["sizeX"] = 9, size in tiles
--- 		["sizeY"] = 9, size in tiles
--- 		["requiredGoods"] = {
---				[1] = { ["stackSize"] = 99, ["goodID"] = "good1_ID" },
--- 			[2] = { ["stackSize"] = 99, ["goodID"] = "good2_ID" },
--- 			[3] = { ... } or missing if fewer
--- 		},
--- 		["constructionTime"] = 99, number of seconds
--- 		["cityScore"] = 99, points?
--- 		["movable"] = true or false, if it can be moved at any cost
--- 		["initiallyEssential"] = true or false, if a new-game-starting blueprint
--- 		["storage"] = 99, capacity
--- 		["workplaces"] = {
--- 			[1] = "Any",
--- 			[2] = "Any",
--- 			[3] = "Any",
--- 			[4] = ... representing the number of workplaces, or missing if fewer
--- 		},
--- 		["recipes"] = {
--- 			[1] = "recipe1_ID",
--- 			[2] = "recipe2_ID",
--- 			[3] = "recipe3_ID",
--- 			[4] = ... or missing if fewer
--- 		}
--- 	},
--- 	["workshop2_ID"] = {
--- 		...
--- 	},
---		["workshop3_ID"] = {
--- 		...
--- 	},
--- 	...
--- }
---
--- @module WorkshopsData
local WorkshopsData = {}



local CsvUtils = require("Module:CsvUtils")



--region Private member variables

--- Main data table, like this: table[ID] = table containing data for that ID
local workshopsTable

--- Lookup map. Built once and reused on all subsequent calls within this
--- session, like this: table[displayName] = workshopID
local mapNamesToIDs

--endregion



--region Private constants

local DATA_TEMPLATE_NAME = "Template:Workshops_csv"

local HEADER_ROW = 1
local DATA_ROWS = 2

local INDEX_ID = "id"
local INDEX_NAME = "displayName"
local INDEX_DESCRIPTION = "description"
local INDEX_CATEGORY = "category"
local INDEX_SIZE_X = "sizeX"
local INDEX_SIZE_Y = "sizeY"
local INDEX_CITY_SCORE = "cityScore"
local INDEX_MOVABLE = "movable"
local INDEX_ESSENTIAL = "initiallyEssential"
local INDEX_STORAGE_CAP = "storage"
local INDEX_CONSTRUCTION_TIME = "constructionTime"
local INDEX_REQUIRED_GOODS = "requiredGoods"
local INDEX_WORKPLACES = "workplaces"
local INDEX_RECIPES = "recipes"

local INDEX_CONSTRUCTION_GOODS_STACK_SIZE = "stackSize"
local INDEX_CONSTRUCTION_GOODS_GOOD_ID = "goodID"

local PATTERN_SPLIT_STACK_AND_ID = "(%d+)%s([%[%]%s%a]+)"

--endregion



--region Private methods

---
--- Creates a new subtable containing the construction goods required for the
--- specified workshop.
---
--- @param originalWorkshop table workshop data record from which to make subtable
--- @param workshopsHeaderLookup table header lookup built from the CSV data
--- @return table subtable with the required construction goods
function makeRequiredGoodsSubtable(originalWorkshop, workshopsHeaderLookup)

	-- A constant we'll need only within this function.
	local REQ_GOOD_HEADER_BASE_STRING = "requiredGood"

	-- Copy the originals directly into a subtable.
	local requiredIndex1 = workshopsHeaderLookup[REQ_GOOD_HEADER_BASE_STRING .. "1"]
	local requiredIndex2 = workshopsHeaderLookup[REQ_GOOD_HEADER_BASE_STRING .. "2"]
	local requiredIndex3 = workshopsHeaderLookup[REQ_GOOD_HEADER_BASE_STRING .. "3"]

	local number1, id1 = originalWorkshop[requiredIndex1]:match(PATTERN_SPLIT_STACK_AND_ID)
	local number2, id2 = originalWorkshop[requiredIndex2]:match(PATTERN_SPLIT_STACK_AND_ID)
	local number3, id3 = originalWorkshop[requiredIndex3]:match(PATTERN_SPLIT_STACK_AND_ID)

	-- don't add subtables that would just contain nils
	local requiredGoods = {
		number1 and id1 and { [INDEX_CONSTRUCTION_GOODS_STACK_SIZE] = number1, [INDEX_CONSTRUCTION_GOODS_GOOD_ID] = id1 } or nil,
		number2 and id2 and { [INDEX_CONSTRUCTION_GOODS_STACK_SIZE] = number2, [INDEX_CONSTRUCTION_GOODS_GOOD_ID] = id2 } or nil,
		number3 and id3 and { [INDEX_CONSTRUCTION_GOODS_STACK_SIZE] = number3, [INDEX_CONSTRUCTION_GOODS_GOOD_ID] = id3 } or nil
	}

	return requiredGoods
end



---
--- Creates a new subtable containing the workplaces available in the specified
--- workshop.
---
--- @param originalWorkshop table workshop data record from which to make subtable
--- @param workshopsHeaderLookup table header lookup built from the CSV data
--- @return table subtable with the workplaces
function makeWorkplacesSubtable(originalWorkshop, workshopsHeaderLookup)

	-- A constant we'll need only within this function.
	local WORKPLACE_HEADER_BASE_STRING = "workplace"

	-- Copy the originals directly into a subtable.
	local workplaceIndex1 = workshopsHeaderLookup[WORKPLACE_HEADER_BASE_STRING .. "1"]
	local workplaceIndex2 = workshopsHeaderLookup[WORKPLACE_HEADER_BASE_STRING .. "2"]
	local workplaceIndex3 = workshopsHeaderLookup[WORKPLACE_HEADER_BASE_STRING .. "3"]
	local workplaceIndex4 = workshopsHeaderLookup[WORKPLACE_HEADER_BASE_STRING .. "4"]

	local workplace1 = originalWorkshop[workplaceIndex1]
	local workplace2 = originalWorkshop[workplaceIndex2]
	local workplace3 = originalWorkshop[workplaceIndex3]
	local workplace4 = originalWorkshop[workplaceIndex4]

	-- if it's not an empty string, then save that to the table, otherwise nil
	local workplaces = {
		(workplace1 ~= "" and workplace1) or nil,
		(workplace2 ~= "" and workplace2) or nil,
		(workplace3 ~= "" and workplace3) or nil,
		(workplace4 ~= "" and workplace4) or nil
	}

	return workplaces
end



---
--- Creates a new subtable containing the recipes available in the specified
--- workshop.
---
--- @param originalWorkshop table workshop data record from which to make subtable
--- @param workshopsHeaderLookup table header lookup built from the CSV data
--- @return table subtable with the recipe IDs
function makeRecipesSubtable(originalWorkshop, workshopsHeaderLookup)

	-- A constant we'll need only within this function.
	local LOOKUP_RECIPE_BASE_STRING = "recipe"

	-- Copy the originals directly into a subtable.
	local recipeIndex1 = workshopsHeaderLookup[LOOKUP_RECIPE_BASE_STRING .. "1"]
	local recipeIndex2 = workshopsHeaderLookup[LOOKUP_RECIPE_BASE_STRING .. "2"]
	local recipeIndex3 = workshopsHeaderLookup[LOOKUP_RECIPE_BASE_STRING .. "3"]
	local recipeIndex4 = workshopsHeaderLookup[LOOKUP_RECIPE_BASE_STRING .. "4"]

	local recipe1 = originalWorkshop[recipeIndex1]
	local recipe2 = originalWorkshop[recipeIndex2]
	local recipe3 = originalWorkshop[recipeIndex3]
	local recipe4 = originalWorkshop[recipeIndex4]

	local recipes = {
		(recipe1 ~= "" and recipe1) or nil,
		(recipe2 ~= "" and recipe2) or nil,
		(recipe3 ~= "" and recipe3) or nil,
		(recipe4 ~= "" and recipe4) or nil
	}

	return recipes
end



---
--- Transforms the originalWorkshopTable returned from CSV processing to be
--- more conducive to member functions looking up data. Converts text strings
--- into subtables. Converts header row into field keys on every record and
--- stores records by id rather than arbitrary integer.
---
--- @param originalWorkshopsTable table of CSV-based data, with header row, data rows
--- @param workshopsHeaderLookup table lookup table of headers to get indexes
--- @return table better structured with IDs as keys
function restructureWorkshopsTable(originalWorkshopsTable, workshopsHeaderLookup)

	-- A few constants we'll need only within this function.
	local HEADER_REQUIRED_GOODS_BASE = "requiredGood"
	local HEADER_WORKPLACE_BASE = "workplace"
	local HEADER_RECIPES_BASE = "recipe"

	mapNamesToIDs = {}

	local newWorkshopTable = {}
	for _, originalWorkshop in ipairs (originalWorkshopsTable[DATA_ROWS]) do

		-- Copy over the content, mapping unhelpful indexes into headers keys.
		local newWorkshop = {}
		for index, key in pairs(originalWorkshopsTable[HEADER_ROW]) do

			-- Convert string versions of true/false to actual booleans
			if key == INDEX_MOVABLE or key == INDEX_ESSENTIAL then
				newWorkshop[key] = originalWorkshop[index] == "True"
			else
				-- Convert a some of the strings to subtables. But only once
				-- per group of related strings.
				if key:sub(1, #HEADER_REQUIRED_GOODS_BASE) == HEADER_REQUIRED_GOODS_BASE then
					if not newWorkshop[INDEX_REQUIRED_GOODS] then
						newWorkshop[INDEX_REQUIRED_GOODS] = makeRequiredGoodsSubtable(originalWorkshop, workshopsHeaderLookup)
					end
				else
					if key:sub(1, #HEADER_WORKPLACE_BASE) == HEADER_WORKPLACE_BASE then
						if not newWorkshop[INDEX_WORKPLACES] then
							newWorkshop[INDEX_WORKPLACES] = makeWorkplacesSubtable(originalWorkshop, workshopsHeaderLookup)
						end
					else
						if key:sub(1, #HEADER_RECIPES_BASE) == HEADER_RECIPES_BASE then
							if not newWorkshop[INDEX_RECIPES] then
								newWorkshop[INDEX_RECIPES] = makeRecipesSubtable(originalWorkshop, workshopsHeaderLookup)
							end
						else
							-- Everything else can be directly copied over.
							newWorkshop[key] = originalWorkshop[index]
						end
					end
				end
			end
		end

		newWorkshopTable[ newWorkshop[INDEX_ID] ] = newWorkshop

		-- Also populate the map for looking up IDs with display names
		mapNamesToIDs[newWorkshop[INDEX_NAME]] = newWorkshop[INDEX_ID]
	end

	return newWorkshopTable
end



---
--- Data loader function that uses the utility module and restructures the data
--- to be easier to access for invoking methods and later method calls. This
--- method is automatically called by all public member functions if the main
--- data table has not yet been populated in the current session.
function loadData()

	-- Utility module retrieves the data as basic, flat lua tables.
	local originalWorkshopsTable, workshopsHeaderLookup = CsvUtils.luaTableFromCSV(CsvUtils.extractCSV(DATA_TEMPLATE_NAME))

	-- Now restructure to be more conducive for data about goods.
	workshopsTable = restructureWorkshopsTable(originalWorkshopsTable, workshopsHeaderLookup)
end



---
--- Uses the display name, which people are more familiar with, to find the
--- encoded ID of the workshop. Useful for retrieving the workshop data that is
--- indexed by ID.
---
--- Returns nil if the workshop with the specified name is not found.
---
--- @param displayName string plain-language name of the workshop to find
--- @return string ID of the workshop found, or nil if not found
function findWorkshopIDByName(displayName)

	-- At runtime, this should never be nil or empty, so throw an error.
	if not displayName or displayName == "" then
		error("Parameter is nil or empty for the workshop's name: " .. displayName .. ".")
	end

	if not workshopsTable then
		loadData()
	end

	return mapNamesToIDs[displayName]
end

--endregion



--region Public methods

---
--- Retrieve the whole table of data for the specified workshop. Instead of
--- this, you should probably be calling the individual getter methods.
---
--- Throws an error if called with nil or empty string. Returns nil if the
--- specified workshop cannot be found.
---
--- @param displayName string plain language name of the workshop
--- @return table containing the data for the specified workshop with key-value pairs, or nil if not found
function WorkshopsData.getAllDataForWorkshop(displayName)

	-- At runtime, this should never be nil or empty.
	if not displayName or displayName == "" then
		error("Parameter is nil or empty for the workshop's name: " .. displayName .. ".")
	end

	if not workshopsTable then
		WorkshopsData.loadData()
	end

	local workshopID = findWorkshopIDByName(displayName)
	if not workshopID then
		return nil
	end

	return workshopsTable[workshopID]
end



---
--- Retrieves the description for the workshop specified by its plain language
--- display name.
---
--- Returns nil if the workshop named was not found.
---
---@param displayName string with the plain language name of the workshop
---@return string the in-game description of the specified workshop
function WorkshopsData.getWorkshopDescription(displayName)

	local workshop = WorkshopsData.getAllDataForWorkshop(displayName)

	if not workshop then
		return nil
	end

	return workshop[INDEX_DESCRIPTION]
end



---
--- Retrieves the construction toolbar category for the workshop specified by
--- its plain language display name.
---
--- Returns nil if the workshop named was not found.
---
---@param displayName string with the plain language name of the workshop
---@return string the category
function WorkshopsData.getWorkshopCategory(displayName)

	local workshop = WorkshopsData.getAllDataForWorkshop(displayName)

	if not workshop then
		return nil
	end

	return workshop[INDEX_CATEGORY]
end



---
--- Retrieves the 2x2 size for the workshop specified by its plain language
--- display name, in two return values.
---
--- Returns nil if the workshop named was not found.
---
---@param displayName string with the plain language name of the workshop
---@return number the X-size of the workshop
---@return number the Y-size of the workshop
function WorkshopsData.getWorkshopSize(displayName)

	local workshop = WorkshopsData.getAllDataForWorkshop(displayName)

	if not workshop then
		return nil
	end

	return workshop[INDEX_SIZE_X], workshop[INDEX_SIZE_Y]
end



---
--- Retrieves the goods required for construction for the workshop specified by
--- its plain language display name, in a table that looks like this:
---
--- ["requiredGoods"] = {
--- 	[1] = { ["stackSize"] = 99, ["goodID"] = "good1_ID" },
--- 	[2] = { ["stackSize"] = 99, ["goodID"] = "good2_ID" },
--- 	[3] = { ... } or missing if fewer
--- }
---
--- Returns nil if the workshop named was not found.
---
---@param displayName string with the plain language name of the workshop
---@return table of required goods
function WorkshopsData.getWorkshopRequiredGoods(displayName)

	local workshop = WorkshopsData.getAllDataForWorkshop(displayName)

	if not workshop then
		return nil
	end

	return workshop[INDEX_REQUIRED_GOODS]
end



---
--- Retrieves the construction time for the workshop specified by its plain
--- language display name.
---
--- Returns nil if the workshop named was not found.
---
---@param displayName string with the plain language name of the workshop
---@return number of seconds it takes to construct the workshop
function WorkshopsData.getWorkshopConstructionTime(displayName)

	local workshop = WorkshopsData.getAllDataForWorkshop(displayName)

	if not workshop then
		return nil
	end

	return workshop[INDEX_CONSTRUCTION_TIME]
end



---
--- Retrieves the city score awarded for the workshop specified by its plain
--- language display name.
---
--- Returns nil if the workshop named was not found.
---
---@param displayName string with the plain language name of the workshop
---@return number of points for city score from having the workshop
function WorkshopsData.getWorkshopCityScore(displayName)

	local workshop = WorkshopsData.getAllDataForWorkshop(displayName)

	if not workshop then
		return nil
	end

	return workshop[INDEX_CITY_SCORE]
end



---
--- Retrieves whether the workshop specified by its plain language display
--- name can be moved, at any cost.
---
--- Returns nil if the workshop named was not found.
---
---@param displayName string with the plain language name of the workshop
---@return boolean of whether workshop can be moved
function WorkshopsData.isWorkshopMoveable(displayName)

	local workshop = WorkshopsData.getAllDataForWorkshop(displayName)

	if not workshop then
		return nil
	end

	return workshop[INDEX_MOVABLE]
end



---
--- Retrieves whether the workshop specified by its plain language display
--- name has an essential starting blueprint, and for a new game profile.
---
--- Returns nil if the workshop named was not found.
---
---@param displayName string with the plain language name of the workshop
---@return boolean of whether workshop's blueprint is essential.
function WorkshopsData.isWorkshopInitiallyEssential(displayName)

	local workshop = WorkshopsData.getAllDataForWorkshop(displayName)

	if not workshop then
		return nil
	end

	return workshop[INDEX_ESSENTIAL]
end



---
--- Retrieves the storage capacity of the workshop specified by its plain
--- language display name.
---
--- Returns nil if the workshop named was not found.
---
---@param displayName string with the plain language name of the workshop
---@return number representing the storage capacity of the workshop
function WorkshopsData.getWorkshopStorage(displayName)

	local workshop = WorkshopsData.getAllDataForWorkshop(displayName)

	if not workshop then
		return nil
	end

	return workshop[INDEX_STORAGE_CAP]
end



---
--- Retrieves the workplaces at the workshop specified by its plain language
--- display name, in a table that looks like this:
---
--- ["workplaces"] = {
--- 	[1] = "Any",
--- 	[2] = "Any",
--- 	[3] = "Any",
--- 	[4] = ... or missing if fewer
--- }
---
--- The number of workplaces can easily be found with #workplaces.
---
--- Returns nil if the workshop named was not found.
---
---@param displayName string with the plain language name of the workshop
---@return table of workplaces
function WorkshopsData.getWorkshopWorkplaces(displayName)

	local workshop = WorkshopsData.getAllDataForWorkshop(displayName)

	if not workshop then
		return nil
	end

	return workshop[INDEX_WORKPLACES]
end



---
--- Retrieves the recipes possible at the workshop specified by its plain
--- language display name, in a table that looks like this:
---
--- ["recipes"] = {
--- 	[1] = "recipe1_ID",
--- 	[2] = "recipe2_ID",
--- 	[3] = "recipe3_ID",
--- 	[4] = ... or missing if fewer
--- }
---
--- Returns nil if the workshop named was not found.
---
---@param displayName string with the plain language name of the workshop
---@return table of recipe IDs
function WorkshopsData.getWorkshopRecipes(displayName)

	local workshop = WorkshopsData.getAllDataForWorkshop(displayName)

	if not workshop then
		return nil
	end

	return workshop[INDEX_RECIPES]
end



---
--- Retrieves the icon filename for the workshop specified by its plain
--- language display name.
---
--- Returns nil if the workshop named was not found.
---
---@param displayName string with the plain language name of the workshop
---@return string the workshop's icon filename, including the extension
function WorkshopsData.getWorkshopIcon(displayName)

	local workshop = WorkshopsData.getAllDataForWorkshop(displayName)

	if not workshop then
		return nil
	end

	-- the base string of the icon is the ID. it has to be not nil to
	-- concatenate
	if workshop[INDEX_ID] then
		return workshop[INDEX_ID] .. "_icon.png"
	else
		return nil
	end
end

--endregion

return WorkshopsData