local settings = ...

local concat = table.concat
local insert = table.insert
local sprintf = string.format
local rep = string.rep

local minetest_example_header = [[
#    This file contains a list of all available settings and their default value for minetest.conf

#    By default, all the settings are commented and not functional.
#    Uncomment settings by removing the preceding #.

#    minetest.conf is read by default from:
#    ../minetest.conf
#    ../../minetest.conf
#    Any other path can be chosen by passing the path as a parameter
#    to the program, eg. "minetest.exe --config ../minetest.conf.example".

#    Further documentation:
#    http://wiki.minetest.net/

]]

local function create_minetest_conf_example()
	local result = { minetest_example_header }
	for _, entry in ipairs(settings) do
		if entry.type == "category" then
			if entry.level == 0 then
				insert(result, "#\n# " .. entry.name .. "\n#\n\n")
			else
				insert(result, rep("#", entry.level))
				insert(result, "# " .. entry.name .. "\n\n")
			end
		else
			if entry.comment ~= "" then
				for _, comment_line in ipairs(entry.comment:split("\n", true)) do
					insert(result, "#    " .. comment_line .. "\n")
				end
			end
			insert(result, "#    type: " .. entry.type)
			if entry.min then
				insert(result, " min: " .. entry.min)
			end
			if entry.max then
				insert(result, " max: " .. entry.max)
			end
			if entry.values then
				insert(result, " values: " .. concat(entry.values, ", "))
			end
			if entry.possible then
				insert(result, " possible values: " .. entry.possible:gsub(",", ", "))
			end
			insert(result, "\n")
			local append
			if entry.default ~= "" then
				append = " " .. entry.default
			end
			insert(result, sprintf("# %s =%s\n\n", entry.name, append or ""))
		end
	end
	return concat(result)
end

local translation_file_header = [[
// This file is automatically generated
// It conatins a bunch of fake gettext calls, to tell xgettext about the strings in config files
// To update it, refer to the bottom of builtin/mainmenu/dlg_settings_advanced.lua

fake_function() {]]

local function create_translation_file()
	local result = { translation_file_header }
	for _, entry in ipairs(settings) do
		if entry.type == "category" then
			insert(result, sprintf("\tgettext(%q);", entry.name))
		else
			if entry.readable_name then
				insert(result, sprintf("\tgettext(%q);", entry.readable_name))
			end
			if entry.comment ~= "" then
				local comment_escaped = entry.comment:gsub("\n", "\\n")
				comment_escaped = comment_escaped:gsub("\"", "\\\"")
				insert(result, "\tgettext(\"" .. comment_escaped .. "\");")
			end
		end
	end
	insert(result, "}\n")
	return concat(result, "\n")
end

local file = assert(io.open("minetest.conf.example", "w"))
file:write(create_minetest_conf_example())
file:close()

file = assert(io.open("src/settings_translation_file.cpp", "w"))
file:write(create_translation_file())
file:close()