from __future__ import absolute_import
from Screens.Screen import Screen

from Components.ActionMap import ActionMap
from Components.PluginComponent import plugins
from Components.PluginList import PluginEntryComponent, PluginList
from Components.Label import Label
from Screens.MessageBox import MessageBox
from Plugins.Plugin import PluginDescriptor
from Tools.Directories import resolveFilename, fileExists, SCOPE_PLUGINS


class PluginBrowserSummary(Screen):
	pass

class PluginBrowser(Screen):
	def __init__(self, session):
		Screen.__init__(self, session)
		
		self["red"] = Label(_("Manage extensions"))
		self["green"] = Label()
		
		self.list = []
		self["pluginlist"] = PluginList(self.list)
		self.pluginlist = []
		
		self["actions"] = ActionMap(["WizardActions"],
		{
			"ok": self.save,
			"back": self.close,
		})
		self["SoftwareActions"] = ActionMap(["ColorActions"],
		{
			"red": self.openExtensionmanager
		})
		self["SoftwareActions"].setEnabled(True)
		self.updateList()
		self.onFirstExecBegin.append(self.checkWarnings)
	
	def checkWarnings(self):
		if len(plugins.warnings):
			text = _("Some plugins are not available:\n")
			for (pluginname, error) in plugins.warnings:
				text += _("%s (%s)\n") % (pluginname, error)
			plugins.resetWarnings()
			self.session.open(MessageBox, text = text, type = MessageBox.TYPE_WARNING)

	def save(self):
		self.run()
	
	def run(self):
		plugin = self["pluginlist"].current[0]
		plugin(session=self.session)
		
	def updateList(self):
		self.pluginlist = plugins.getPlugins(PluginDescriptor.WHERE_PLUGINMENU)
		self.list = [PluginEntryComponent(plugin) for plugin in self.pluginlist]
		self.list.sort(key = lambda x: x[1].lower())
		self["pluginlist"].setList(self.list)

	def PluginDownloadBrowserClosed(self):
		self.updateList()

	def openExtensionmanager(self):
		if fileExists(resolveFilename(SCOPE_PLUGINS, "SystemPlugins/SoftwareManager/plugin.py")):
			from Plugins.SystemPlugins.SoftwareManager.plugin import PluginManager
			self.session.openWithCallback(self.PluginDownloadBrowserClosed, PluginManager)
		else:
			self.session.open(MessageBox, _("The Softwaremanagement extension is not installed!\nPlease install it."), type = MessageBox.TYPE_INFO,timeout = 10 )

	def createSummary(self):
		return PluginBrowserSummary
