Editing Module:Changelog

local p = {};
local date_module = require('Module:Date')
local changelog_dates = mw.loadJsonData("Data:Changelog Dates.json")
local tag_tree = mw.loadJsonData("Data:Changelog Tag Tree.json")
local dictionary_module = require('Module:Dictionary')

--Only Data:Changelog_05-03-2024.json is loaded right now, as it still needs work and for now it was uploaded manually, need an uploader script to handle it
--Returns all lines of a given date that has that tag
local function date_tag_to_lines(date, tag_to_filter) 
	-- Get the data for the respective line
	local changelog_data = mw.loadJsonData(date_to_changelog_data_page(date))
	local lines = ""
	for index, line in ipairs(changelog_data) do
		description = line["Description"]
		if tag_to_filter == 'All' then
			lines = lines .. description .. "<br>"
		else
			for index2, tag in ipairs(line["Tags"]) do
				if tag == tag_to_filter then
					lines = lines .. description .. "<br>"
				end
			end
		end
	end
	return lines
end

--Expand the Update history table/row template for 1 specific changelog
local function write_changelog(date, tag_to_filter)
	local template_title = "Update history table/row"
	local template_args = {}
	--05-03-2024 to May 3, 2024
	template_args["update"] = date_module.format_date(date)
	template_args["changes"] = date_tag_to_lines(date, tag_to_filter)
	if (template_args["changes"] ~= "") then
		return mw.getCurrentFrame():expandTemplate{ title = template_title, args = template_args }
	else
		return ""
	end
end

-- Write changelogs table
p.write_changelogs = function(frame)
	tag = frame.args[1]
	num_dates_str = frame.args[2]
	local num_dates
	if (tag == nil) then return "tag parameter must be provided" end
	if (num_dates_str ~= nil) then
		num_dates = tonumber(num_dates_str)
		if (num_dates == nil) then return "num_dates parameter must be numerical" end
	end
	
	local template_title = "Update history table"
	local template_args = {}
	local content = "\n"
	
	-- Write changelog for each date
	for index, date in ipairs(changelog_dates) do
		if (num_dates_str ~= nil and index > num_dates) then
			break
		else
			content = content .. write_changelog(date, tag) .. "\n"
		end
	end
	
	template_args["contents"] = content
	
	return mw.getCurrentFrame():expandTemplate{ title = template_title, args = template_args }
end

function date_to_changelog_data_page(date)
	return "Data:Changelog " .. date .. ".json"	
end

--Shows all changelog date data pages as a list of pages
p.write_data_pages_list = function(frame)
	local str = ""
	
	for index, date in ipairs(changelog_dates) do
		str = str .. "[[" .. date_to_changelog_data_page(date) .. "]]<br>"
	end
	
	return str
end

p.write_changelog_by_date = function(frame)
	local date_to_write = frame.args[1]
	
	-- Determine the previous and next update
	-- Find the index in dates list
	local previous_date = ''
	local the_date = ''
	local next_date = ''
	local date_found = false
	for index, date in ipairs(changelog_dates) do
		if date == date_to_write then
			--Date found
			the_date = date
			date_found = true
		elseif date_found and next_date == '' then --on next iteration, save the next date
			next_date = date
			break
		end
		
		if not date_found then
			previous_date = date -- only update previous date if the_date isnt found
		end
	end
	
	local template_title = 'Update layout'
	local template_args = {
		['prev_update'] = prev_date,
		['current_update'] = the_date,
		['next_update'] = next_date,
		['source'] = 'https://forums.playdeadlock.com/threads/09-26-2024-update.33015/',
		['source_title'] = the_date .. ' Update',
		['notes'] = date_tag_to_lines(the_date, 'All')
	}

	return mw.getCurrentFrame():expandTemplate{title = template_title, args = template_args}
end

p.get_last_updated = function(frame)
	local tag_to_search = frame.args[1]
	
	-- Iterate changelog dates
	for index, date in ipairs(changelog_dates) do
		local changelog_data = mw.loadJsonData(date_to_changelog_data_page(date))
		
		-- Iterate lines
		for _, line in ipairs(changelog_data) do
			local tags = line['Tags']
			
			-- Iterate tags
			for _, tag in ipairs(tags) do
				if tag_to_search == tag then
					return '[[Update:' .. date .. '|' .. date .. ']]'
				end
			end
		end
	end
	
	return dictionary_module.translate('N/A')
end

function p.write_tag_tree(frame)
	return p.write_branch(tag_tree, 1)
end
	
function p.write_branch(branch, depth)
	local list_str = ""
	if branch == nil then return "" end
	
	for parent, children in pairs(branch) do
		list_str = list_str .. string.rep("*", depth) .. string.format("[[%s#Update history|%s]]\n", parent, parent)
		if children ~= nil then
			list_str = list_str .. p.write_branch(children, depth+1)
		end
	end
	
	return list_str
end

return p