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

try:
	import oursql as mysqldb
except ImportError:
	import MySQLdb as mysqldb

from pywikibot import config

class MYSQL_RED:
	
	#Save mysqldb-connection as class attribute to use only one in descendant classes
	connection = False
	db_hostname=config.db_hostname
	db_username=config.db_username
	db_password=config.db_password
	db_name=config.db_username + '__bot'
	
	def __init__( self ):
		"""
		Opens a connection to MySQL-DB
		
		@returns 	mysql-stream	MySQL Connection
		"""
		
		# Connect to mysqldb only once
		if( type( self ).connection == False ):
			
			type( self ).connection = mysqldb.connect( host=type( self ).db_hostname, user=type( self ).db_username, passwd=type( self ).db_password, db=type( self ).db_name )
		
	def __del__( self ):
		"""
		Before deleting class, close connection to MySQL-DB
		"""
		
		type( self ).connection.close()

class MYSQL_RED_PAGE( MYSQL_RED ):
	
	def __init__( self, page_id ):
		"""
		Creates a new instance, runs __init__ of parent class
		"""
		super().__init__( )
		
		self.__page_id = int( page_id );
		
		self.data = self.get_page()
	
	def __del__( self ):
		pass
	
	def get_page( self ):
		"""
		Retrieves a red page row from MySQL-Database for given page_id
		
		@param		int		page_id		MediaWiki page_id for page to retrieve
		
		@returns	tuple				Tuple with data for given page_id otherwise if none found
					bool	FALSE
		"""
		cursor = type( self ).connection.cursor(mysqldb.DictCursor)
		
		cursor.execute( 'SELECT * FROM `red_pages` WHERE `page_id` = ?;', ( self.__page_id, ) )
		res = cursor.fetchone()
		
		if res:
			return res
		else:
			return False
	
	def add_page( self, page_title, rev_id, status=0 ):
		"""
		Inserts a red page row in MySQL-Database for given page_id
		
		@param		int		rev_id		MediaWiki current rev_id for page to update
		@param		str		page_title	MediaWiki new page_title for page to update
		@param		int		status		Page parsing status (0 - not (successfully) parsed; 1 - successfully parsed; 2 - successfully parsed archive)
		"""
		
		cursor = type( self ).connection.cursor()
		
		if not page_title:
			page_title = self.data[ 'page_title' ]
		if not rev_id:
			rev_id = self.data[ 'rev_id' ]
		
		query = 'INSERT INTO `red_pages` ( page_id, page_title, rev_id, status ) VALUES ( ?, ?, ?, ? );'
		data = ( self.__page_id, str( page_title ), int( rev_id ), int( status ) )
		
		cursor.execute( query, data)
		
		type( self ).connection.commit()
		
		self.data = self.get_page()
	
	
	def update_page( self, rev_id=None, page_title=None, status=0 ):
		"""
		Updates the red page row in MySQL-Database for given page_id
		
		@param		int		rev_id		MediaWiki current rev_id for page to update
		@param		str		page_title	MediaWiki new page_title for page to update
		@param		int		status		Page parsing status (0 - not (successfully) parsed; 1 - successfully parsed)
		"""
		
		cursor = type( self ).connection.cursor()
		
		if not page_title:
			page_title = self.data[ 'page_title' ]
		if not rev_id:
			rev_id = self.data[ 'rev_id' ]
		
		query = 'UPDATE `red_pages` SET `page_title` = ?, `rev_id` = ?, `status`= ? WHERE `page_id` = ?;'
		data = ( str( page_title ), int( rev_id ), int( status ), self.__page_id )
		
		cursor.execute( query, data)
		
		type( self ).connection.commit()
	

class MYSQL_RED_FAM( MYSQL_RED ):
	
	def __init__( self, fam_hash ):
		"""
		Creates a new instance, runs __init__ of parent class
		"""
		super().__init__( )
		
		self.__fam_hash = fam_hash
		
		self.data = self.get_fam()
	
	def __del__( self ):
		pass
	
	def get_fam( self ):
		"""
		Retrieves a red family row from MySQL-Database for given fam_hash
		
		@returns	dict				Dictionairy with data for given fam hash otherwise if none found
					bool	FALSE
		"""
		cursor = type( self ).connection.cursor(mysqldb.DictCursor)
		
		cursor.execute( 'SELECT * FROM `red_families` WHERE `fam_hash` = ?;', ( self.__fam_hash, ) )
		res = cursor.fetchone()
		
		if res:
			return res
		else:
			return False
			
	def add_fam( self, articlesList, heading, red_page_id, beginning, ending=None, status=0 ):
		
		cursor = type( self ).connection.cursor()
		
		query = 'INSERT INTO `red_families` ( fam_hash, red_page_id, beginning, ending, status, heading, article0, article1, article2, article3, article4, article5, article6, article7 ) VALUES ( ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ? );'
		data = [ str( self.__fam_hash ), red_page_id, beginning, ending, status, heading ]
		
		for article in articlesList:
			data.append( str( article ) )
		
		while len( data ) < 14:
			data.append( None )
		
		data = tuple( data )
		
		cursor.execute( query, data)
		
		type( self ).connection.commit()
		
		self.data = self.get_fam()
	
	def update_fam( self, red_page_id, heading, beginning, ending, status ):
		"""
		Updates the red fam row in MySQL-Database for given fam_hash
		
		@param		int			red_page_id		MediaWiki page_id which contains red_fam
		@param		datetime	beginning		Timestamp of beginning of redundance discussion
		qparam		datetime	ending			Timestamp of ending of redundance discussion
		@param		int			status			red_fam status (0 - discussion is running; 1 - discussion over; 2 - discussion archived)
		"""
		
		cursor = type( self ).connection.cursor()
		
		query = 'UPDATE `red_families` SET `red_page_id` = ?, `heading` = ?, `beginning` = ?, `ending` = ?, `status`= ? WHERE `fam_hash` = ?;'
		data = ( int(red_page_id ), str( heading ),  beginning, ending, int( status ), self.__fam_hash )
		
		cursor.execute( query, data)
		
		type( self ).connection.commit()