bgneal@412: """
bgneal@412: import_old_download_comments.py - For importing download comments from SG101 1.0
bgneal@412: as csv files.
bgneal@412: 
bgneal@412: """
bgneal@412: from __future__ import with_statement
bgneal@412: import csv
bgneal@412: from datetime import datetime
bgneal@412: 
bgneal@412: from django.core.management.base import LabelCommand, CommandError
bgneal@412: from django.contrib.auth.models import User
bgneal@412: from django.contrib.contenttypes.models import ContentType
bgneal@412: 
bgneal@412: from downloads.models import Download, VoteRecord
bgneal@412: from comments.models import Comment
bgneal@412: from legacy.html2md import MarkdownWriter
bgneal@412: import legacy.data
bgneal@412: 
bgneal@412: 
bgneal@412: class Command(LabelCommand):
bgneal@412:     args = '<filename filename ...>'
bgneal@412:     help = 'Imports download comments from the old database in CSV format'
bgneal@412:     md_writer = MarkdownWriter()
bgneal@412: 
bgneal@412:     def handle_label(self, filename, **options):
bgneal@412:         """
bgneal@412:         Process each line in the CSV file given by filename by
bgneal@412:         creating a new object and saving it to the database.
bgneal@412: 
bgneal@412:         """
bgneal@412:         try:
bgneal@412:             with open(filename, "rb") as f:
bgneal@412:                 self.reader = csv.DictReader(f)
bgneal@412:                 try:
bgneal@412:                     for row in self.reader:
bgneal@412:                         self.process_row(row)
bgneal@412:                 except csv.Error, e:
bgneal@412:                     raise CommandError("CSV error: %s %s %s" % (
bgneal@412:                         filename, self.reader.line_num, e))
bgneal@412: 
bgneal@412:         except IOError:
bgneal@412:             raise CommandError("Could not open file: %s" % filename)
bgneal@412: 
bgneal@412:     def process_row(self, row):
bgneal@412:         """
bgneal@412:         Process one row from the CSV file: create an object for the row
bgneal@412:         and save it in the database.
bgneal@412: 
bgneal@412:         """
bgneal@412:         dl_id = int(row['ratinglid'])
bgneal@412:         if dl_id in (1, 2, 3, 4):
bgneal@412:             return
bgneal@412: 
bgneal@412:         try:
bgneal@412:             dl = Download.objects.get(pk=dl_id)
bgneal@412:         except Download.DoesNotExist:
bgneal@412:             return
bgneal@412: 
bgneal@412:         try:
bgneal@412:             user = User.objects.get(username=row['ratinguser'])
bgneal@412:         except User.DoesNotExist:
bgneal@412:             try:
bgneal@412:                 user = User.objects.get(
bgneal@412:                     username=legacy.data.KNOWN_USERNAME_CHANGES[row['ratinguser']])
bgneal@412:             except (User.DoesNotExist, KeyError):
bgneal@412:                 return
bgneal@412: 
bgneal@412:         vote_date = datetime.strptime(row['ratingtimestamp'], "%Y-%m-%d %H:%M:%S")
bgneal@412: 
bgneal@412:         comment_text = row['ratingcomments'].decode('latin-1').strip()
bgneal@412:         if comment_text:
bgneal@412:             comment = Comment(
bgneal@412:                 content_type=ContentType.objects.get_for_model(dl),
bgneal@412:                 object_id=dl.id,
bgneal@412:                 user=user,
bgneal@412:                 comment=comment_text,
bgneal@412:                 creation_date=vote_date,
bgneal@412:                 ip_address = row['ratinghostname'],
bgneal@412:                 is_public = True,
bgneal@412:                 is_removed = False,
bgneal@412:             )
bgneal@412:             comment.save()
bgneal@412: 
bgneal@412:         vr = VoteRecord(download=dl, user=user, vote_date=vote_date)
bgneal@412:         vr.save()
bgneal@412: 
bgneal@412:     def to_markdown(self, s):
bgneal@412:         self.md_writer.reset()
bgneal@412:         self.md_writer.feed(s)
bgneal@412:         return self.md_writer.markdown()