#!/usr/bin/env python3
"""
Loads, reloads and unloads modules on the fly.
"""
import sys

import loader
import module


@module.require_admin
@module.commands("reload")
@module.thread(False)
def f_reload(bot, trigger):
	"""Reloads a module, for use by admins only."""
	if len(trigger.args) < 2:
		return boy.reply("Reload what?")
	name = trigger.args[1]

	if name == "*":
		bot.load_modules()
		return bot.msg("done")

	if name not in sys.modules:
		name = "modules." + name

	if name not in sys.modules:
		return bot.msg(f"Module '{name}' not loaded, try the 'load' command.")

	loader.unload_module(bot, name)
	loader.load_module(bot, name)
	bot.msg(f"Module '{name}' reloaded.")


@module.require_admin
@module.commands("load")
@module.thread(False)
def f_load(bot, trigger):
	"""Loads a module, for use by admins only."""
	if len(trigger.args) < 2:
		return bot.msg('Load what?')
	name = trigger.args[1]

	if name in sys.modules:
		return bot.msg('Module already loaded, use reload.')

	try:
		loader.load_module(bot, name)
	except ModuleNotFoundError:
		if name.startswith("modules."):
			return bot.msg(f"Module not found: '{name}'")

		name = "modules." + name
		try:
			loader.load_module(bot, name)
		except ModuleNotFoundError:
			return bot.msg(f"Module not found: '{name}'")
	bot.msg(f"Module '{name}' loaded.")


@module.require_admin
@module.commands("unload")
@module.thread(False)
def f_unload(bot, trigger):
	"""Unloads a module, for use by admins only."""
	if len(trigger.args) < 2:
		return bot.msg('Unload what?')
	name = trigger.args[1]
	
	if name not in sys.modules:
		name = "modules." + name

	if name not in sys.modules:
		return bot.msg(f"Module '{name}' not loaded, try the 'load' command.")

	loader.unload_module(bot, name)
	bot.msg(f"Module '{name}' unloaded.")