fix(author-search): 🚑 ASIN in filename was being used as search for author as well as book

this caused an infinite loading loop for artist update. Also make sure logging of filename uses unquoted name

Author: djdembeck

Contents/Code/search_tools.py

@@ -8,8 +8,8 @@
 # Setup logger
 log = Logging()
 
-asin_regex = '(?=.\\d)[A-Z\\d]{10}'
-region_regex = '(?<=\[)[A-Za-z]{2}(?=\])'
+asin_regex = re.compile(r'(?=.\d)[A-Z\d]{10}')
+region_regex = re.compile(r'(?<=\[)[A-Za-z]{2}(?=\])')
 
 
 class SearchTool:
@@ -41,18 +41,26 @@ def build_url(self, query):
 
     def check_for_asin(self):
         """
-            Checks filename and search query for ASIN to quick match.
+            Checks filename (for books) and/or search query for ASIN to quick match.
         """
-        filename_search_asin = self.search_asin(self.media.filename)
+        # Check filename for ASIN if content type is books
+        if self.content_type == 'books':
+            # Provide a plain filename for ASIN search
+            filename_unquoted = urllib.unquote(
+                self.media.filename).decode('utf8')
+            filename_search_asin = self.search_asin(filename_unquoted)
+
+            if filename_search_asin:
+                log.info('ASIN found in filename')
+                self.check_for_region(filename_unquoted)
+                return filename_search_asin.group(0) + '_' + self.region_override
+
+        # Check search query for ASIN
         # Default to album and use artist if no album
         manual_asin = self.media.album if self.media.album else self.media.artist
         manual_search_asin = self.search_asin(manual_asin)
 
-        if filename_search_asin:
-            log.info('ASIN found in filename')
-            self.check_for_region(self.media.filename)
-            return filename_search_asin.group(0) + '_' + self.region_override
-        elif manual_search_asin:
+        if manual_search_asin:
             log.info('ASIN found in manual search')
             self.check_for_region(manual_asin)
             return manual_search_asin.group(0) + '_' + self.region_override
@@ -137,14 +145,14 @@ def search_asin(self, input):
             Searches for ASIN in a string.
         """
         if input:
-            return re.search(asin_regex, urllib.unquote(input).decode('utf8'))
+            return re.search(asin_regex, input)
 
     def search_region(self, input):
         """
             Searches for region in a string.
         """
         if input:
-            return re.search(region_regex, urllib.unquote(input).decode('utf8'))
+            return re.search(region_regex, input)
 
     def validate_author_name(self):
         """