##
## Contributors for this file:
##	- Yann Le Boulanger <asterix@lagaule.org>
##	- Nikos Kouremenos <kourem@gmail.com>
##
## Copyright (C) 2003-2004 Yann Le Boulanger <asterix@lagaule.org>
##                         Vincent Hanquez <tab@snarc.org>
## Copyright (C) 2005 Yann Le Boulanger <asterix@lagaule.org>
##                    Vincent Hanquez <tab@snarc.org>
##                    Nikos Kouremenos <kourem@gmail.com>
##                    Dimitur Kirov <dkirov@gmail.com>
##                    Travis Shirk <travis@pobox.com>
##                    Norman Rasmussen <norman@rasmussen.co.za>
##
## This program 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; version 2 only.
##
## This program 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.
##

import os
import sys
import locale
from common import gajim

class OptionsParser:
	def __init__(self, filename):
		self.__filename = filename
		self.old_values = {} # values that are saved in the file and maybe
									# no longer valid

	def read_line(self, line):
		index = line.find(' = ')
		var_str = line[0:index]
		value_str = line[index + 3:-1]
		
		i_start = var_str.find('.')
		i_end = var_str.rfind('.')
		
		if i_start == -1:
			self.old_values[var_str] = value_str
			gajim.config.set(var_str, value_str)
		else:
			optname = var_str[0:i_start]
			key = var_str[i_start + 1:i_end]
			subname = var_str[i_end + 1:]
			gajim.config.add_per(optname, key)
			gajim.config.set_per(optname, key, subname, value_str)
		
	def read(self):
		try:
			fd = open(self.__filename)
		except:
			if os.path.exists(self.__filename):
				#we talk about a file
				print _('error: cannot open %s for reading') % self.__filename
			return

		new_version = gajim.config.get('version')
		for line in fd.readlines():
			try:
				line = line.decode('utf-8')
			except UnicodeDecodeError:
				line = line.decode(locale.getpreferredencoding())
			self.read_line(line)
		old_version = gajim.config.get('version')

		self.update_config(old_version, new_version)
		self.old_values = {} # clean mem

		fd.close()

	def write_line(self, fd, opt, parents, value):
		if value == None:
			return
		value = value[1]
		# convert to utf8 before writing to file if needed
		if isinstance(value, unicode):
			value = value.encode('utf-8')
		else:
			value = str(value)
		if isinstance(opt, unicode):
			opt = opt.encode('utf-8')
		s = ''
		if parents:
			if len(parents) == 1:
				return
			for p in parents:
				if isinstance(p, unicode):
					p = p.encode('utf-8')
				s += p + '.'
		s += opt
		fd.write(s + ' = ' + value + '\n')
	
	def write(self):
		(base_dir, filename) = os.path.split(self.__filename)
		try:
			base_dir = base_dir.decode(sys.getfilesystemencoding())
			filename = filename.decode(sys.getfilesystemencoding())
		except:
			pass
		self.__tempfile = os.path.join(base_dir, '.' + filename)
		try:
			f = open(self.__tempfile, 'w')
		except IOError, e:
			return str(e)
		try:
			gajim.config.foreach(self.write_line, f)
		except IOError, e:
			return str(e)
		f.close()
		if os.path.exists(self.__filename):
			# win32 needs this
			try:
				os.remove(self.__filename)
			except:
				pass
		try:
			os.rename(self.__tempfile, self.__filename)
		except IOError, e:
			return str(e)
		os.chmod(self.__filename, 0600)

	def update_config(self, old_version, new_version):
		old_version_list = old_version.split('.') # convert '0.x.y' to (0, x, y)
		old = []
		while len(old_version_list):
			old.append(int(old_version_list.pop(0)))
		new_version_list = new_version.split('.')
		new = []
		while len(new_version_list):
			new.append(int(new_version_list.pop(0)))

		if old < [0, 9] and new >= [0, 9]:
			self.update_config_x_to_09()
		if old < [0, 10] and new >= [0, 10]:
			self.update_config_09_to_010()
		if old < [0, 10, 1, 1] and new >= [0, 10, 1, 1]:
			self.update_config_to_01011()
		if old < [0, 10, 1, 2] and new >= [0, 10, 1, 2]:
			self.update_config_to_01012()
		if old < [0, 10, 1, 3] and new >= [0, 10, 1, 3]:
			self.update_config_to_01013()
		if old < [0, 10, 1, 4] and new >= [0, 10, 1, 4]:
			self.update_config_to_01014()
		if old < [0, 10, 1, 5] and new >= [0, 10, 1, 5]:
			self.update_config_to_01015()

		gajim.logger.init_vars()
		gajim.config.set('version', new_version)
	
	def update_config_x_to_09(self):
		# Var name that changed:
		# avatar_width /height -> chat_avatar_width / height
		if self.old_values.has_key('avatar_width'):
			gajim.config.set('chat_avatar_width', self.old_values['avatar_width'])
		if self.old_values.has_key('avatar_height'):
			gajim.config.set('chat_avatar_height', self.old_values['avatar_height'])
		if self.old_values.has_key('use_dbus'):
			gajim.config.set('remote_control', self.old_values['use_dbus'])
		# always_compact_view -> always_compact_view_chat / _gc
		if self.old_values.has_key('always_compact_view'):
			gajim.config.set('always_compact_view_chat',
				self.old_values['always_compact_view'])
			gajim.config.set('always_compact_view_gc',
				self.old_values['always_compact_view'])
		# new theme: grocery, plain
		d = ['accounttextcolor', 'accountbgcolor', 'accountfont',
			'accountfontattrs', 'grouptextcolor', 'groupbgcolor', 'groupfont',
			'groupfontattrs', 'contacttextcolor', 'contactbgcolor', 'contactfont',
			'contactfontattrs', 'bannertextcolor', 'bannerbgcolor', 'bannerfont', 
			'bannerfontattrs']
		for theme_name in (_('grocery'), _('gtk+')):
			if theme_name not in gajim.config.get_per('themes'):
				gajim.config.add_per('themes', theme_name)
				theme = gajim.config.themes_default[theme_name]
				for o in d:
					gajim.config.set_per('themes', theme_name, o, theme[d.index(o)])
		# Remove cyan theme if it's not the current theme
		if 'cyan' in gajim.config.get_per('themes'):
			gajim.config.del_per('themes', 'cyan')
		if _('cyan') in gajim.config.get_per('themes'):
			gajim.config.del_per('themes', _('cyan'))
		# If we removed our roster_theme, choose the default green one or another
		# one if doesn't exists in config
		if gajim.config.get('roster_theme') not in gajim.config.get_per('themes'):
			theme = _('green')
			if theme not in gajim.config.get_per('themes'):
				theme = gajim.config.get_per('themes')[0]
			gajim.config.set('roster_theme', theme)
		# new proxies in accounts.name.file_transfer_proxies
		for account in gajim.config.get_per('accounts'):
			proxies = gajim.config.get_per('accounts', account,
				'file_transfer_proxies')
			if proxies.find('proxy.netlab.cz') < 0:
				proxies += ', ' + 'proxy.netlab.cz'
			gajim.config.set_per('accounts', account, 'file_transfer_proxies',
				proxies)

		gajim.config.set('version', '0.9')

	def assert_unread_msgs_table_exists(self):
		'''create table unread_messages if there is no such table'''
		import exceptions
		try:
			from pysqlite2 import dbapi2 as sqlite
		except ImportError:
			raise exceptions.PysqliteNotAvailable
		import logger

		con = sqlite.connect(logger.LOG_DB_PATH) 
		cur = con.cursor()
		try:
			cur.executescript(
				'''
				CREATE TABLE unread_messages (
					message_id INTEGER PRIMARY KEY AUTOINCREMENT UNIQUE,
					jid_id INTEGER
				);
				'''
			)
			con.commit()
			gajim.logger.init_vars()
		except sqlite.OperationalError, e:
			pass
		con.close()

	def update_config_09_to_010(self):
		if self.old_values.has_key('usetabbedchat') and not \
		self.old_values['usetabbedchat']:
			gajim.config.set('one_message_window', 'never')
		if self.old_values.has_key('autodetect_browser_mailer') and \
		self.old_values['autodetect_browser_mailer'] is True:
			gajim.config.set('autodetect_browser_mailer', False)
		if self.old_values.has_key('useemoticons') and \
		not self.old_values['useemoticons']:
			gajim.config.set('emoticons_theme', '')
		if self.old_values.has_key('always_compact_view_chat') and \
		self.old_values['always_compact_view_chat'] != 'False':
			gajim.config.set('always_hide_chat_buttons', True)
		if self.old_values.has_key('always_compact_view_gc') and \
		self.old_values['always_compact_view_gc'] != 'False':
			gajim.config.set('always_hide_groupchat_buttons', True)
		
		for account in gajim.config.get_per('accounts'):
			proxies_str = gajim.config.get_per('accounts', account,
				'file_transfer_proxies')
			proxies = proxies_str.split(',')
			for i in range(0, len(proxies)):
				proxies[i] = proxies[i].strip()
			for wrong_proxy in ['proxy65.jabber.autocom.pl', 
				'proxy65.jabber.ccc.de']: 
				if wrong_proxy in proxies:
					proxies.remove(wrong_proxy)
			if not 'transfer.jabber.freenet.de' in proxies:
				proxies.append('transfer.jabber.freenet.de')
			proxies_str = ', '.join(proxies)
			gajim.config.set_per('accounts', account, 'file_transfer_proxies',
				proxies_str)
		# create unread_messages table if needed
		self.assert_unread_msgs_table_exists()

		gajim.config.set('version', '0.10')

	def update_config_to_01011(self):
		if self.old_values.has_key('print_status_in_muc') and \
			self.old_values['print_status_in_muc'] in (True, False):
			gajim.config.set('print_status_in_muc', 'in_and_out')
		gajim.config.set('version', '0.10.1.1')

	def update_config_to_01012(self):
		# See [6456]
		if self.old_values.has_key('emoticons_theme') and \
			self.old_values['emoticons_theme'] == 'Disabled':
			gajim.config.set('emoticons_theme', '')
		gajim.config.set('version', '0.10.1.2')

	def update_config_to_01013(self):
		'''create table transports_cache if there is no such table'''
		import exceptions
		try:
			from pysqlite2 import dbapi2 as sqlite
		except ImportError:
			raise exceptions.PysqliteNotAvailable
		import logger

		con = sqlite.connect(logger.LOG_DB_PATH) 
		cur = con.cursor()
		try:
			cur.executescript(
				'''
				CREATE TABLE transports_cache (
					transport TEXT UNIQUE,
					type INTEGER
				);
				'''
			)
			con.commit()
		except sqlite.OperationalError, e:
			pass
		con.close()
		gajim.config.set('version', '0.10.1.3')

	def update_config_to_01014(self):
		'''apply indeces to the logs database'''
		import exceptions
		try:
			from pysqlite2 import dbapi2 as sqlite
		except ImportError:
			raise exceptions.PysqliteNotAvailable
		import logger
		print _('migrating logs database to indeces')
		con = sqlite.connect(logger.LOG_DB_PATH) 
		cur = con.cursor()
		# apply indeces
		try:
			cur.executescript(
				'''
				CREATE INDEX idx_logs_jid_id_kind ON logs (jid_id, kind);
				CREATE INDEX idx_unread_messages_jid_id ON unread_messages (jid_id);
				'''
			)

			con.commit()
		except:
			pass
		con.close()
		gajim.config.set('version', '0.10.1.4')

	def update_config_to_01015(self):
		'''clean show values in logs database'''
		from pysqlite2 import dbapi2 as sqlite
		import logger
		con = sqlite.connect(logger.LOG_DB_PATH)
		cur = con.cursor()
		status = dict((i[5:].lower(), logger.constants.__dict__[i]) for i in \
			logger.constants.__dict__.keys() if i.startswith('SHOW_'))
		for show in status:
			cur.execute('update logs set show = ? where show = ?;', (status[show],
				show))
		cur.execute('update logs set show = NULL where show not in (0, 1, 2, 3, 4, 5);')
		con.commit()
		cur.close() # remove this in 2007 [pysqlite old versions need this]
		con.close()
		gajim.config.set('version', '0.10.1.5')