Handle uploaded CSV and match to openlibrary titles.

fedireads/goodreads_import.py

@@ -0,0 +1,59 @@
+import re
+import csv
+import itertools
+from requests import HTTPError
+
+from fedireads import books_manager
+
+def unquote_string(text):
+    match = re.match(r'="([^"]*)"', text)
+    if match:
+        return match.group(1)
+    else:
+        return text
+
+def construct_search_term(title, author):
+    # Strip brackets (usually series title from search term)
+    title = re.sub(r'\s*\([^)]*\)\s*', '', title)
+    # Open library doesn't like including author initials in search term.
+    author = re.sub(r'(\w\.)+\s*', '', author)
+
+    return ' '.join([title, author])
+
+class GoodreadsCsv(object):
+    def __init__(self, csv_file):
+        self.reader = csv.DictReader(csv_file)
+
+    def __iter__(self):
+        for line in itertools.islice(self.reader, 20, 30):
+            entry = GoodreadsItem(line)
+            try:
+                entry.resolve()
+            except HTTPError:
+                pass
+            yield entry
+
+class GoodreadsItem(object):
+    def __init__(self, line):
+        self.line = line
+        self.book = None
+
+    def resolve(self):
+        self.book = self.get_book_from_isbn()
+        if not self.book:
+            self.book = self.get_book_from_title_author()
+
+    def get_book_from_isbn(self):
+        isbn = unquote_string(self.line['ISBN13'])
+        search_results = books_manager.search(isbn)
+        if search_results:
+            return books_manager.get_or_create_book(search_results[0].key)
+
+    def get_book_from_title_author(self):
+        search_term = construct_search_term(self.line['Title'], self.line['Author'])
+        search_results = books_manager.search(search_term)
+        if search_results:
+            return books_manager.get_or_create_book(search_results[0].key)
+
+    def __repr__(self):
+        return "<GoodreadsItem {!r}>".format(self.line['Title'])