bgneal@291: """
bgneal@291: import_old_news.py - For importing news stories from SG101 1.0 as csv files.
bgneal@291: """
bgneal@291: from __future__ import with_statement
bgneal@291: import csv
bgneal@291: import optparse
bgneal@291: import sys
bgneal@291: from datetime import datetime
bgneal@291: 
bgneal@291: from django.core.management.base import LabelCommand, CommandError
bgneal@291: from django.contrib.auth.models import User
bgneal@291: 
bgneal@291: from news.models import Category, Story
bgneal@291: from legacy.phpbb import unescape
bgneal@291: 
bgneal@291: KNOWN_USERNAME_CHANGES = {
bgneal@291:     'cavefishbutchdelux': 'butchdelux',
bgneal@291:     'Findicator1': 'WaveOhhh',
bgneal@291: }
bgneal@291: 
bgneal@291: class Command(LabelCommand):
bgneal@291:     args = '<filename filename ...>'
bgneal@291:     help = 'Imports news stories from the old database in CSV format'
bgneal@291:     option_list = LabelCommand.option_list + (
bgneal@291:         optparse.make_option("-p", "--progress", action="store_true",
bgneal@291:             help="Output a . after every 20 stories to show progress"),
bgneal@291:     )
bgneal@291: 
bgneal@291:     def handle_label(self, filename, **options):
bgneal@291:         """
bgneal@291:         Process each line in the CSV file given by filename by
bgneal@291:         creating a new story.
bgneal@291: 
bgneal@291:         """
bgneal@291:         self.show_progress = options.get('progress')
bgneal@291:         self.users = {}
bgneal@291: 
bgneal@291:         # Create a mapping from the old database's topics to our
bgneal@291:         # Categories.
bgneal@291:         self.topics = {}
bgneal@291:         try:
bgneal@291:             self.topics[2] = Category.objects.get(slug='site-news')
bgneal@291:             self.topics[3] = Category.objects.get(slug='bands')
bgneal@291:             self.topics[4] = Category.objects.get(slug='show-announcements')
bgneal@291:             self.topics[5] = Category.objects.get(slug='show-reports')
bgneal@291:             self.topics[6] = Category.objects.get(slug='gear')
bgneal@291:             self.topics[7] = Category.objects.get(slug='reviews')
bgneal@291:             self.topics[8] = Category.objects.get(slug='surf-scene-news')
bgneal@291:             self.topics[9] = Category.objects.get(slug='articles')
bgneal@291:             self.topics[10] = Category.objects.get(slug='interviews')
bgneal@291:             self.topics[11] = Category.objects.get(slug='tablature')
bgneal@291:             self.topics[12] = Category.objects.get(slug='featured-videos')
bgneal@291:         except Category.DoesNotExist:
bgneal@291:             sys.exit("Category does not exist; check topic mapping.")
bgneal@291: 
bgneal@291:         try:
bgneal@291:             with open(filename, "rb") as f:
bgneal@291:                 self.reader = csv.DictReader(f)
bgneal@291:                 num_rows = 0
bgneal@291:                 try:
bgneal@291:                     for row in self.reader:
bgneal@291:                         self.process_row(row)
bgneal@291:                         num_rows += 1
bgneal@291:                         if self.show_progress and num_rows % 20 == 0:
bgneal@291:                             sys.stdout.write('.')
bgneal@291:                             sys.stdout.flush()
bgneal@291:                 except csv.Error, e:
bgneal@291:                     raise CommandError("CSV error: %s %s %s" % (
bgneal@291:                         filename, self.reader.line_num, e))
bgneal@291: 
bgneal@291:                 print
bgneal@291: 
bgneal@291:         except IOError:
bgneal@291:             raise CommandError("Could not open file: %s" % filename)
bgneal@291: 
bgneal@291:     def process_row(self, row):
bgneal@291:         """
bgneal@291:         Process one row from the CSV file: create a Story object for
bgneal@291:         the row and save it in the database.
bgneal@291: 
bgneal@291:         """
bgneal@291:         row = dict((k, v if v != 'NULL' else '') for k, v in row.iteritems())
bgneal@291: 
bgneal@291:         try:
bgneal@291:             submitter = self._get_user(row['informant'])
bgneal@291:         except User.DoesNotExist:
bgneal@291:             print "Could not find user %s for story %s; skipping." % (
bgneal@291:                     row['informant'], row['sid'])
bgneal@291:             return
bgneal@291: 
bgneal@291:         story = Story(id=int(row['sid']),
bgneal@291:                 title=unescape(row['title']),
bgneal@291:                 submitter=submitter,
bgneal@291:                 category=self.topics[int(row['topic'])],
bgneal@291:                 short_text=row['hometext'],
bgneal@291:                 long_text=row['bodytext'],
bgneal@291:                 date_submitted=datetime.strptime(row['time'], "%Y-%m-%d %H:%M:%S"),
bgneal@291:                 allow_comments=True)
bgneal@291: 
bgneal@291:         story.save()
bgneal@291: 
bgneal@291:     def _get_user(self, username):
bgneal@291:         """
bgneal@291:         Returns the user object with the given username.
bgneal@291:         Throws User.DoesNotExist if not found.
bgneal@291: 
bgneal@291:         """
bgneal@291:         try:
bgneal@291:             return self.users[username]
bgneal@291:         except KeyError:
bgneal@291:             pass
bgneal@291: 
bgneal@291:         try:
bgneal@291:             user = User.objects.get(username=username)
bgneal@291:         except User.DoesNotExist:
bgneal@291:             try:
bgneal@291:                 user = User.objects.get(username=KNOWN_USERNAME_CHANGES[username])
bgneal@291:             except KeyError:
bgneal@291:                 raise User.DoesNotExist
bgneal@291: 
bgneal@291:         self.users[username] = user
bgneal@291:         return user