--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/legacy/management/commands/import_old_downloads.py	Sat May 05 17:10:48 2012 -0500
@@ -0,0 +1,133 @@
+"""
+import_old_downloads.py - For importing downloads from SG101 1.0 as csv files.
+"""
+from __future__ import with_statement
+import csv
+import datetime
+
+from django.core.management.base import LabelCommand, CommandError
+from django.contrib.auth.models import User
+
+from downloads.models import Download, Category
+from legacy.html2md import MarkdownWriter
+
+
+# downloads with these lid's will be excluded
+EXCLUDE_SET = set([1, 2, 3, 4, 277])
+
+# Mapping of old category IDs to new; None means we don't plan on importing
+CAT_MAP = {
+  4: None,      # Misc
+  3: None,      # Music
+  1: None,      # Demos
+  6: 2,         # Gear Samples
+  8: 4,         # Ringtones
+  9: 8,         # Tablature
+  10: 6,        # Interviews
+  11: None,     # 2008 MP3 Comp
+  12: 1,        # Backing Tracks
+  13: None,     # 2009 MP3 Comp
+}
+
+SG101_PREFIX = 'http://surfguitar101.com/'
+
+
+class Command(LabelCommand):
+    args = '<filename filename ...>'
+    help = 'Imports downloads from the old database in CSV format'
+    md_writer = MarkdownWriter()
+
+    def handle_label(self, filename, **options):
+        """
+        Process each line in the CSV file given by filename by
+        creating a new object and saving it to the database.
+
+        """
+        self.cats = {}
+        try:
+            self.default_user = User.objects.get(pk=2)
+        except User.DoesNotExist:
+            raise CommandError("Need a default user with pk=2")
+
+        try:
+            with open(filename, "rb") as f:
+                self.reader = csv.DictReader(f)
+                try:
+                    for row in self.reader:
+                        self.process_row(row)
+                except csv.Error, e:
+                    raise CommandError("CSV error: %s %s %s" % (
+                        filename, self.reader.line_num, e))
+
+        except IOError:
+            raise CommandError("Could not open file: %s" % filename)
+
+    def get_category(self, old_cat_id):
+        """
+        Return the Category object for the row.
+
+        """
+        cat_id = CAT_MAP[old_cat_id]
+        if cat_id not in self.cats:
+            try:
+                cat = Category.objects.get(pk=cat_id)
+            except Category.DoesNotExist:
+                raise CommandError("Category does not exist: %s on line %s" % (
+                    cat_id, self.reader.line_num))
+            else:
+                self.cats[cat_id] = cat
+        return self.cats[cat_id]
+
+    def get_user(self, username):
+        """
+        Return the user object for the given username.
+        If the user cannot be found, self.default_user is returned.
+
+        """
+        try:
+            return User.objects.get(username=username)
+        except User.DoesNotExist:
+            return self.default_user
+
+    def process_row(self, row):
+        """
+        Process one row from the CSV file: create an object for the row
+        and save it in the database.
+
+        """
+        lid = int(row['lid'])
+        if lid in EXCLUDE_SET:
+            return  # skip
+
+        cat = int(row['cid'])
+        if CAT_MAP.get(cat) is None:
+            return  # skip this one; we aren't carrying these over
+
+        dl_date = datetime.datetime.strptime(row['date'], "%Y-%m-%d %H:%M:%S")
+        old_url = row['url'].decode('latin-1')
+        if old_url.startswith(SG101_PREFIX):
+            old_url = old_url[len(SG101_PREFIX):]
+        if old_url.startswith('dls/'):
+            old_url = old_url[4:]
+        new_url = u'downloads/1.0/%s' % old_url
+
+        dl = Download(
+            id=lid,
+            title=row['title'].decode('latin-1'),
+            category=self.get_category(cat),
+            description=self.to_markdown(row['description'].decode('latin-1')),
+            file=new_url,
+            user=self.get_user(row['submitter']),
+            date_added=dl_date,
+            ip_address='127.0.0.1',  # not available
+            hits=int(row['hits']),
+            average_score=float(row['downloadratingsummary']) / 2.0,
+            total_votes=int(row['totalvotes']),
+            is_public=True)
+        dl.save()
+        #print "cp %s %s" % (old_url, '/home/var/django-sites/sg101/sg101-trunk/media/' + new_url)
+
+    def to_markdown(self, s):
+        self.md_writer.reset()
+        self.md_writer.feed(s)
+        return self.md_writer.markdown()