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

from mysql_red import MYSQL_RED_PAGE
from red_fam import RED_FAM_PARSER

class RED_PAGE:
	"""Class for handling redundance discussion pages and archives"""
	
	def __init__( self, page, archive=False ):
		"""
		Generate a new RED_PAGE object based on the given pywikibot page object
	
		@param		page	page
		"""
		
		# Safe the pywikibot page object
		self.page = page
		self._archive = archive
		
		self.__handle_db( )

		self.is_page_changed()
		
		self.__parsed = None
		if( self.__changed or self.__mysql.data[ 'status' ] == 0 ):
			self.parse()
		
		self.__update_db()
			
	#	else:
	#		self.__mysql.add_page()
	
	def __handle_db( self ):
		"""
		Handles opening of db connection
		"""
		# We need a connection to our mysqldb
		self.__mysql = MYSQL_RED_PAGE( self.page._pageid )
		
		if not self.__mysql.data:
			self.__mysql.add_page( self.page.title(), self.page._revid )
			
	def is_page_changed( self ):
		"""
		Check wether the page was changed since last run
		"""
		
		if( self.__mysql.data != { 'page_id': self.page._pageid, 'rev_id': self.page._revid, 'page_title': self.page.title(), 'status': self.__mysql.data[ 'status' ] } ):
			self.__changed = True
		else:
			self.__changed = False

	def is_archive( self ):
		"""
		Detects wether current page is an archive of discussions
		"""
		if self._archive or ( u"/Archiv" in self.page.title() ):
			return True
		else:
			return False
		
	def parse( self ):
		"""
		Handles the parsing process
		"""

		# Since @param text is a string we need to split it in lines
		text_lines = self.page.text.split( "\n" )
	
		# Initialise line counter
		i = 0
		fam_heading = None
		beginning = None
		ending = None
	
		# Set line for last detected Redundance-Family to 0
		last_fam = 0
	
		# Iterate over the lines of the page
		for line in text_lines:
			
			# Check wether we have an "Redundance-Family"-Section heading (Level 3)
			if RED_FAM_PARSER.is_sectionheading( line ):
				
				# Before working with next red_fam create the object for the one before (if one)
				if( fam_heading and beginning ):
					try:
						red_fam = RED_FAM_PARSER( fam_heading, self.page._pageid, self.is_archive(), beginning, ending )
					except:
						pass
				
				# Save line number for last detected Redundance-Family
				last_fam = i
				# Save heading
				fam_heading = line
				
				# Defined (re)initialisation of dates
				beginning = None
				ending = None
			
			# Check wether we are currently in an "Redundance-Family"-Section Body
			if i > last_fam and last_fam > 0:
			
				# Check if we have alredy recognized the beginning date of the discussion (in former iteration) or if we have a done-notice
				if not beginning:
					beginning = RED_FAM_PARSER.is_beginning( line )
				elif not ending:
					ending = RED_FAM_PARSER.is_ending( line )
			# Increment line counter
			i += 1
		else:
			# For the last red_fam create the object
			if( fam_heading and beginning ):
				#~ try:
					red_fam = RED_FAM_PARSER( fam_heading, self.page._pageid, self.is_archive(), beginning, ending )
				#~ except:
					#~ pass
	def __update_db( self ):
		"""
		Updates the page meta data in mysql db
		"""
		if( self.__parsed ):
			status = 1
		
			if( self.is_archive() ):
				status = 2
		else:
			status = 0
			
		self.__mysql.update_page( self.page._revid, self.page.title(), status )