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1 """
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2 import_old_download_comments.py - For importing download comments from SG101 1.0
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3 as csv files.
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4
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5 """
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6 from __future__ import with_statement
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7 import csv
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8 from datetime import datetime
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9
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10 from django.core.management.base import LabelCommand, CommandError
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11 from django.contrib.auth.models import User
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12 from django.contrib.contenttypes.models import ContentType
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13
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14 from downloads.models import Download, VoteRecord
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15 from comments.models import Comment
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16 from legacy.html2md import MarkdownWriter
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17 import legacy.data
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18
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19
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20 class Command(LabelCommand):
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21 args = '<filename filename ...>'
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22 help = 'Imports download comments from the old database in CSV format'
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23 md_writer = MarkdownWriter()
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24
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25 def handle_label(self, filename, **options):
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26 """
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27 Process each line in the CSV file given by filename by
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28 creating a new object and saving it to the database.
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29
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30 """
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31 try:
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32 with open(filename, "rb") as f:
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33 self.reader = csv.DictReader(f)
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34 try:
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35 for row in self.reader:
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36 self.process_row(row)
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37 except csv.Error, e:
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38 raise CommandError("CSV error: %s %s %s" % (
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39 filename, self.reader.line_num, e))
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40
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41 except IOError:
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42 raise CommandError("Could not open file: %s" % filename)
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43
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44 def process_row(self, row):
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45 """
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46 Process one row from the CSV file: create an object for the row
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47 and save it in the database.
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48
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49 """
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50 dl_id = int(row['ratinglid'])
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51 if dl_id in (1, 2, 3, 4):
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52 return
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53
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54 try:
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55 dl = Download.objects.get(pk=dl_id)
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56 except Download.DoesNotExist:
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57 return
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58
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59 try:
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60 user = User.objects.get(username=row['ratinguser'])
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61 except User.DoesNotExist:
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62 old_name = row['ratinguser'].lower()
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63 try:
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64 user = User.objects.get(
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65 username=legacy.data.KNOWN_USERNAME_CHANGES[old_name])
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66 except (User.DoesNotExist, KeyError):
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67 return
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68
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69 vote_date = datetime.strptime(row['ratingtimestamp'], "%Y-%m-%d %H:%M:%S")
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70
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71 comment_text = row['ratingcomments'].decode('latin-1').strip()
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72 if comment_text:
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73 comment = Comment(
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74 content_type=ContentType.objects.get_for_model(dl),
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75 object_id=dl.id,
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76 user=user,
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77 comment=comment_text,
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78 creation_date=vote_date,
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79 ip_address = row['ratinghostname'],
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80 is_public = True,
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81 is_removed = False,
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82 )
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83 comment.save()
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84
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85 vr = VoteRecord(download=dl, user=user, vote_date=vote_date)
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86 vr.save()
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87
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88 def to_markdown(self, s):
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89 self.md_writer.reset()
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90 self.md_writer.feed(s)
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91 return self.md_writer.markdown()
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