"""
	wordpresslib.py
	
	WordPress xml-rpc client library
	use MovableType API
	
	Copyright (c) 2011 Charles-Axel Dein
	Copyright (c) 2005 Michele Ferretti
	
	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; either version 2
	of the License, or any later version.
	
	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.
	
	You should have received a copy of the GNU General Public License
	along with this program; if not, write to the Free Software
	Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA	02111-1307, USA.

	XML-RPC supported methods: 
		* getUsersBlogs
		* getUserInfo
		* getPost
		* getRecentPosts
		* newPost
		* editPost
		* deletePost
		* newMediaObject
		* getCategoryList
		* getPostCategories
		* setPostCategories
		* getTrackbackPings
		* publishPost
		* getPingbacks

	References:
		* http://codex.wordpress.org/XML-RPC_Support
		* http://www.sixapart.com/movabletype/docs/mtmanual_programmatic.html
		* http://docs.python.org/lib/module-xmlrpclib.html
"""

__author__ = "Charles-Axel Dein <ca@d3in.org>"
__version__ = "$Revision: 1.1 $"
__date__ = "$Date: 2011/03/03 $"
__copyright__ = "Copyright (c) 2005 Michele Ferretti, 2011 Charles-Axel Dein"
__license__ = "LGPL"

import exceptions
import re
import os
import xmlrpclib
import datetime
import time

class WordPressException(exceptions.Exception):
	"""Custom exception for WordPress client operations
	"""
	def __init__(self, obj):
		if isinstance(obj, xmlrpclib.Fault):
			self.id = obj.faultCode
			self.message = obj.faultString
		else:
			self.id = 0
			self.message = obj

	def __str__(self):
		return '<%s %d: \'%s\'>' % (self.__class__.__name__, self.id, self.message)
		
class WordPressBlog:
	"""Represents blog item
	"""	
	def __init__(self):
		self.id = ''
		self.name = ''
		self.url = ''
		self.isAdmin = False
		
class WordPressUser:
	"""Represents user item
	"""	
	def __init__(self):
		self.id = ''
		self.firstName = ''
		self.lastName = ''
		self.nickname = ''
		self.email = ''
		
class WordPressCategory:
	"""Represents category item
	"""	
	def __init__(self):
		self.id = 0
		self.name = ''
		self.isPrimary = False
	
class WordPressPost:
	"""Represents post item
	"""	
	def __init__(self):
		self.id = 0
		self.title = ''
		self.date = None
		self.permaLink = ''
		self.description = ''
		self.textMore = ''
		self.excerpt = ''
		self.link = ''
		self.categories = []
		self.user = ''
		self.allowPings	= False
		self.allowComments = False
		self.tags = []
		self.customFields = []

	def addCustomField(self, key, value):
		kv = {'key':key, 'value':value}
		self.customFields.append(kv)
		
class WordPressClient:
	"""Client for connect to WordPress XML-RPC interface
	"""
	
	def __init__(self, url, user, password):
		self.url = url
		self.user = user
		self.password = password
		self.blogId = 0
		self.categories = None
		self._server = xmlrpclib.ServerProxy(self.url)

	def _filterPost(self, post):
		"""Transform post struct in WordPressPost instance 
		"""
		postObj = WordPressPost()
		postObj.permaLink 		= post['permaLink']
		postObj.description 	= post['description']
		postObj.title 			= post['title']
		postObj.excerpt 		= post['mt_excerpt']
		postObj.user 			= post['userid']
		postObj.date 			= time.strptime(str(post['dateCreated']), "%Y%m%dT%H:%M:%S")
		postObj.link 			= post['link']
		postObj.textMore 		= post['mt_text_more']
		postObj.allowComments 	= post['mt_allow_comments'] == 1
		postObj.id 				= int(post['postid'])
		postObj.categories 		= post['categories']
		postObj.allowPings 		= post['mt_allow_pings'] == 1
		postObj.tags			= post['mt_keywords']
		postObj.customFields            = post['custom_fields']
		return postObj
		
	def _filterCategory(self, cat):
		"""Transform category struct in WordPressCategory instance
		"""
		catObj = WordPressCategory()
		catObj.id 			= int(cat['categoryId'])
		catObj.name 		= cat['categoryName'] 
		if cat.has_key('isPrimary'):
			catObj.isPrimary 	= cat['isPrimary']
		return catObj
		
	def selectBlog(self, blogId):
		self.blogId = blogId
		
	def supportedMethods(self):
		"""Get supported methods list
		"""
		return self._server.mt.supportedMethods()

	def getLastPost(self):
		"""Get last post
		"""
		return tuple(self.getRecentPosts(1))[0]
			
	def getRecentPosts(self, numPosts=5):
		"""Get recent posts
		"""
		try:
			posts = self._server.metaWeblog.getRecentPosts(self.blogId, self.user, 
													self.password, numPosts)
			for post in posts:
				yield self._filterPost(post)	
		except xmlrpclib.Fault, fault:
			raise WordPressException(fault)
			
	def getPost(self, postId):
		"""Get post item
		"""
		try:
			return self._filterPost(self._server.metaWeblog.getPost(str(postId), self.user, self.password))
		except xmlrpclib.Fault, fault:
			raise WordPressException(fault)
		
	def getUserInfo(self):
		"""Get user info
		"""
		try:
			userinfo = self._server.blogger.getUserInfo('', self.user, self.password)
			userObj = WordPressUser()
			userObj.id = userinfo['userid']
			userObj.firstName = userinfo['firstname']
			userObj.lastName = userinfo['lastname']
			userObj.nickname = userinfo['nickname']
			userObj.email = userinfo['email']
			return userObj
		except xmlrpclib.Fault, fault:
			raise WordPressException(fault)
			
	def getUsersBlogs(self):
		"""Get blog's users info
		"""
		try:
			blogs = self._server.blogger.getUsersBlogs('', self.user, self.password)
			for blog in blogs:
				blogObj = WordPressBlog()
				blogObj.id = blog['blogid']
				blogObj.name = blog['blogName']
				blogObj.isAdmin = blog['isAdmin']
				blogObj.url = blog['url']
				yield blogObj
		except xmlrpclib.Fault, fault:
			raise WordPressException(fault)
			
	def newPost(self, post, publish):
		"""Insert new post
		"""
		blogContent = {
			'title' : post.title,
			'description' : post.description,
			'mt_keywords': post.tags,
			'custom_fields': post.customFields,
		}
		
		# add categories
		i = 0
		categories = []
		for cat in post.categories:
			if i == 0:
				categories.append({'categoryId' : cat, 'isPrimary' : 1})
			else:
				categories.append({'categoryId' : cat, 'isPrimary' : 0})
			i += 1
		
		# insert new post
		idNewPost = int(self._server.metaWeblog.newPost(self.blogId, self.user, self.password, blogContent, 0))
		
		# set categories for new post
		self.setPostCategories(idNewPost, categories)
		
		# publish post if publish set at True 
		if publish:
			self.publishPost(idNewPost)
			
		return idNewPost
	   
	def getPostCategories(self, postId):
		"""Get post's categories
		"""
		try:
			categories = self._server.mt.getPostCategories(postId, self.user, 
													self.password)
			for cat in categories:
				yield self._filterCategory(cat)	
		except xmlrpclib.Fault, fault:
			raise WordPressException(fault)

	def setPostCategories(self, postId, categories):
		"""Set post's categories
		"""
		self._server.mt.setPostCategories(postId, self.user, self.password, categories)
	
	def editPost(self, postId, post, publish):
		"""Edit post
		"""
		blogcontent = {
			'title' : post.title,
			'description' : post.description,
			'permaLink' : post.permaLink,
			'mt_allow_pings' : post.allowPings,
			'mt_text_more' : post.textMore,
			'mt_excerpt' : post.excerpt
		}
		
		if post.date:
			blogcontent['dateCreated'] = xmlrpclib.DateTime(post.date) 
		
		# add categories
		i = 0
		categories = []
		for cat in post.categories:
			if i == 0:
				categories.append({'categoryId' : cat, 'isPrimary' : 1})
			else:
				categories.append({'categoryId' : cat, 'isPrimary' : 0})
			i += 1				 
		
		result = self._server.metaWeblog.editPost(postId, self.user, self.password,
											  blogcontent, 0)
		
		if result == 0:
			raise WordPressException('Post edit failed')
			
		# set categories for new post
		self.setPostCategories(postId, categories)
		
		# publish new post
		if publish:
			self.publishPost(postId)

	def deletePost(self, postId):
		"""Delete post
		"""
		try:
			return self._server.blogger.deletePost('', postId, self.user, 
											 self.password)
		except xmlrpclib.Fault, fault:
			raise WordPressException(fault)

	def getCategoryList(self):
		"""Get blog's categories list
		"""
		try:
			if not self.categories:
				self.categories = []
				categories = self._server.mt.getCategoryList(self.blogId, 
												self.user, self.password)				
				for cat in categories:
					self.categories.append(self._filterCategory(cat))	

			return self.categories
		except xmlrpclib.Fault, fault:
			raise WordPressException(fault)		

	def getCategoryIdFromName(self, name):
		"""Get category id from category name
		"""
		for c in self.getCategoryList():
			if c.name == name:
				return c.id
		
	def getTrackbackPings(self, postId):
		"""Get trackback pings of post
		"""
		try:
			return self._server.mt.getTrackbackPings(postId)
		except xmlrpclib.Fault, fault:
			raise WordPressException(fault)
			
	def publishPost(self, postId):
		"""Publish post
		"""
		try:
			return (self._server.mt.publishPost(postId, self.user, self.password) == 1)
		except xmlrpclib.Fault, fault:
			raise WordPressException(fault)

	def getPingbacks(self, postUrl):
		"""Get pingbacks of post
		"""
		try:
			return self._server.pingback.extensions.getPingbacks(postUrl)
		except xmlrpclib.Fault, fault:
			raise WordPressException(fault)
			
	def newMediaObject(self, mediaFileName):
		"""Add new media object (image, movie, etc...)
		"""
		try:
			f = file(mediaFileName, 'rb')
			mediaBits = f.read()
			f.close()
			
			mediaStruct = {
				'name' : os.path.basename(mediaFileName),
				'bits' : xmlrpclib.Binary(mediaBits)
			}
			
			result = self._server.metaWeblog.newMediaObject(self.blogId, 
									self.user, self.password, mediaStruct)
			return result['url']
			
		except xmlrpclib.Fault, fault:
			raise WordPressException(fault)