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from datetime import datetime
import random
import string
import logging
from django.db import models
from django.contrib.auth.models import User
from django.utils.translation import ugettext as _
from django.utils.translation import ugettext_lazy
from askbot.models.post import Post
from askbot.models.base import BaseQuerySetManager
from askbot.conf import settings as askbot_settings
from askbot import mail
class ReplyAddressManager(BaseQuerySetManager):
"""A manager for the :class:`ReplyAddress` model"""
def get_unused(self, address, allowed_from_email):
return self.get(
address = address,
allowed_from_email = allowed_from_email,
used_at__isnull = True
)
def create_new(self, **kwargs):
"""creates a new reply address"""
kwargs['allowed_from_email'] = kwargs['user'].email
reply_address = ReplyAddress(**kwargs)
while True:
reply_address.address = ''.join(random.choice(string.letters +
string.digits) for i in xrange(random.randint(12, 25))).lower()
if self.filter(address = reply_address.address).count() == 0:
break
reply_address.save()
return reply_address
REPLY_ACTION_CHOICES = (
('post_answer', ugettext_lazy('Post an answer')),
('post_comment', ugettext_lazy('Post a comment')),
('replace_content', ugettext_lazy('Edit post')),
('append_content', ugettext_lazy('Append to post')),
('auto_answer_or_comment', ugettext_lazy('Answer or comment, depending on the size of post')),
('validate_email', ugettext_lazy('Validate email and record signature')),
)
class ReplyAddress(models.Model):
"""Stores a reply address for the post
and the user"""
address = models.CharField(max_length = 25, unique = True)
post = models.ForeignKey(
Post,
null = True,#reply not necessarily to posts
related_name = 'reply_addresses'
)#the emailed post
reply_action = models.CharField(
max_length = 32,
choices = REPLY_ACTION_CHOICES,
default = 'auto_answer_or_comment'
)
response_post = models.ForeignKey(
Post,
null = True,
related_name = 'edit_addresses'
)
user = models.ForeignKey(User)
allowed_from_email = models.EmailField(max_length = 150)
used_at = models.DateTimeField(null = True, default = None)
objects = ReplyAddressManager()
class Meta:
app_label = 'askbot'
db_table = 'askbot_replyaddress'
@property
def was_used(self):
"""True if was used"""
return self.used_at != None
def as_email_address(self, prefix = 'reply-'):
"""returns email address, prefix is added
in front of the code"""
return '%s%s@%s' % (
prefix,
self.address,
askbot_settings.REPLY_BY_EMAIL_HOSTNAME
)
def edit_post(
self, body_text, title = None, edit_response = False
):
"""edits the created post upon repeated response
to the same address"""
if self.was_used or edit_response:
reply_action = 'append_content'
else:
reply_action = self.reply_action
if edit_response:
post = self.response_post
else:
post = self.post
if reply_action == 'append_content':
body_text = post.text + '\n\n' + body_text
revision_comment = _('added content by email')
else:
assert(reply_action == 'replace_content')
revision_comment = _('edited by email')
if post.post_type == 'question':
assert(post is self.post)
self.user.edit_question(
question = post,
body_text = body_text,
title = title,
revision_comment = revision_comment,
by_email = True
)
else:
self.user.edit_post(
post = post,
body_text = body_text,
revision_comment = revision_comment,
by_email = True
)
self.post.thread.invalidate_cached_data()
def create_reply(self, body_text):
"""creates a reply to the post which was emailed
to the user
"""
result = None
if self.post.post_type == 'answer':
result = self.user.post_comment(
self.post,
body_text,
by_email = True
)
elif self.post.post_type == 'question':
if self.reply_action == 'auto_answer_or_comment':
wordcount = len(body_text)/6#todo: this is a simplistic hack
if wordcount > askbot_settings.MIN_WORDS_FOR_ANSWER_BY_EMAIL:
reply_action = 'post_answer'
else:
reply_action = 'post_comment'
else:
reply_action = self.reply_action
if reply_action == 'post_answer':
result = self.user.post_answer(
self.post,
body_text,
by_email = True
)
elif reply_action == 'post_comment':
result = self.user.post_comment(
self.post,
body_text,
by_email = True
)
else:
logging.critical(
'Unexpected reply action: "%s", post by email failed' % reply_action
)
return None#todo: there may be a better action to take here...
elif self.post.post_type == 'comment':
result = self.user.post_comment(
self.post.parent,
body_text,
by_email = True
)
result.thread.invalidate_cached_data()
self.response_post = result
self.used_at = datetime.now()
self.save()
return result
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