vm_lighting_wand/core/commands.lua

local MT = minetest
local vMod = vm_lighting_wand
string.split = string.split

local split = function(s, delimiter)
	local result = {}
	for match in (s .. delimiter):gmatch("(.-)" .. delimiter) do
		match:gsub("%s+", "")
		if match ~= "" then
			table.insert(result, match)
		end
	end
	return result
end

local action_func = {
	set = vMod.set_power,
	add = vMod.add_power,
	remove = vMod.remove_power
}

-- Add a privi to use this command
MT.register_privilege(
	vMod.modname,
	{
		description = vMod.locate("Allow player to alter all players stored power (burntime)"),
		give_to_singleplayer = false,
		give_to_admin = false
	}
)

MT.register_chatcommand(
	vMod.modname,
	{
		params = "[set|add|remove] [name|me] [amount]",
		description = "performs the given action on the given players name to alter stored power (burntime)",
		privs = {
			vm_lighting_wand = true
		},
		func = function(name, param)
			if not param or param == "" then
				return false, ""
			end
			local str = split(param, " ")

			-- check and set action if valid
			local action = str[1]
			if not action == "set" or not action == "add" or not action == "remove" then
				return false, "[" .. vMod.modname .. "]Error:\nInvalid action\n\tMust be one of \n\t\tset\n\t\tadd\n\t\tremove"
			end

			-- check the player
			local who = str[2]
			local who_name = who
			-- me or self == current player
			if who == "me" or who == "self" then
				who_name = name
			end
			who = MT.get_player_by_name(who_name) or nil
			if not who then
				return false, "[" .. vMod.modname .. "]Error:\n\tUnknown player name - " .. (who_name or "unknown")
			end

			-- check the given amount is valid
			local amount = vMod.round(tonumber(str[3] or 0))
			if not amount or amount <= 0 or amount > vMod.get_max_power() then
				return false, "[" .. vMod.modname .. "]Error:\nInvalid amount given: range = 0 > " .. vMod.get_max_power()
			end

			-- Just pass the amount to the correct function to handle it
			action_func[action](who, amount)
			local power = vMod.get_power(who)
			vMod.logger(
				name .. " (" .. action .. ") Power for " .. who_name .. " - amount:" .. amount .. " new power:" .. power,
				"action"
			)

			-- Success
			return true, "[" ..
				vMod.modname ..
					"]Success!\n" ..
						" amount: " .. amount .. " action: " .. action .. " for: " .. who_name .. " new power is now " .. power
		end
	}
)