# This class is used to load plugins

import sys
from bt.message import write
from bt.file import *


class PluginLoader:
	def __init__(self):
		# Plugins are added to this array upon loading
		self.plugins = []


	def clearPlugins(self):
		self.plugins = []


	# Load plugins from a directory
	def loaddir(self, dir):
		exists = checkDir(dir)
		# Exit now if the directory doesn't exist
		if exists == False:
			return
		write("Loading plugins from " + dir, True)

		# Add the directory to our import path
		sys.path.append(dir)
		modlist = ls(dir)
		for mod in modlist:
			split = mod.rsplit('.',1)
			# Check for things we should not import
			if split[0]=="__init__":
				continue
			elif split[1]=="pyc":
				continue
			# Load the module into our module array
			write("Attempting to load "+mod, True)
			self.loadmod(split[0])


	# Call with a module name to import
	# Adds the imported module to a list
	def loadmod(self,mod):
		__import__(mod)
		plugin = sys.modules[mod]
		plugin.__name__ = mod
		self.plugins += [plugin]
		

	# Load specific plugin
	def loadpath(self, path):
		write("Loading " + path)