#! /usr/bin/env python3
# -*- coding: utf-8 -*-

#	Copyright 2011-2012, Marten de Vries
#	Copyright 2011, Milan Boers
#
#	This file is part of OpenTeacher.
#
#	OpenTeacher is free software: you can redistribute it and/or modify
#	it under the terms of the GNU General Public License as published by
#	the Free Software Foundation, either version 3 of the License, or
#	(at your option) any later version.
#
#	OpenTeacher is distributed in the hope that it will be useful,
#	but WITHOUT ANY WARRANTY; without even the implied warranty of
#	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#	GNU General Public License for more details.
#
#	You should have received a copy of the GNU General Public License
#	along with OpenTeacher.  If not, see <http://www.gnu.org/licenses/>.

class WordsHtmlGeneratorModule:
	def __init__(self, moduleManager, *args, **kwargs):
		super().__init__(*args, **kwargs)
		self._mm = moduleManager

		self.type = "htmlGenerator"
		self.dataType = "words"
		self.requires = (
			self._mm.mods(type="wordsStringComposer"),
		)

	def generate(self, lesson, margin="0", coloredRows=True):
		"""Generates a html document which provides an overview of all
		   the questions and answers in `lesson`. It includes an inline
		   stylesheet.

		   - `margin` specifies the margin for the page (should be valid
		     css, e.g. 1em or 1px)
		   - `coloredRows` specifies if the odd rows should have a
		     different background colors than the even ones.

		"""
		class EvalPseudoSandbox(pyratemp.EvalPseudoSandbox):
			def __init__(self2, *args, **kwargs):
				pyratemp.EvalPseudoSandbox.__init__(self2, *args, **kwargs)

				self2.register("compose", self.compose)

		with open(self._mm.resourcePath("template.html"), encoding='UTF-8') as templateFile:
			t = pyratemp.Template(
				templateFile.read(),
				eval_class=EvalPseudoSandbox
			)
		return t(**{
			"list": lesson.list,
			"margin": margin,
			"coloredRows": coloredRows,
		})

	@property
	def compose(self):
		return self._modules.default(
			"active",
			type="wordsStringComposer"
		).compose

	def enable(self):
		global pyratemp
		try:
			import pyratemp
		except ImportError:
			return #remain inactive
		self._modules = set(self._mm.mods(type="modules")).pop()

		self.active = True

	def disable(self):
		self.active = False

		del self._modules

def init(moduleManager):
	return WordsHtmlGeneratorModule(moduleManager)
