Adds book data source connector database table

fedireads/models/book.py

@@ -8,6 +8,25 @@ from fedireads.utils.fields import JSONField, ArrayField
 from fedireads.utils.models import FedireadsModel
 
 
+class Connector(FedireadsModel):
+    ''' book data source connectors '''
+    name = models.CharField(max_length=255)
+    api_key = models.CharField(max_length=255, null=True)
+
+    base_url = models.CharField(max_length=255)
+    covers_url = models.CharField(max_length=255)
+    search_url = models.CharField(max_length=255, null=True)
+
+    key_name = models.CharField(max_length=255)
+
+    politeness_delay = models.IntegerField(null=True) #seconds
+    max_query_count = models.IntegerField(null=True)
+    # how many queries executed in a unit of time, like a day
+    query_count = models.IntegerField(default=0)
+    # when to reset the query count back to 0 (ie, after 1 day)
+    query_count_expiry = models.DateTimeField(auto_now_add=True)
+
+
 class Book(FedireadsModel):
     ''' a generic book, which can mean either an edition or a work '''
     # these identifiers apply to both works and editions
@@ -17,10 +36,11 @@ class Book(FedireadsModel):
     misc_identifiers = JSONField(null=True)
 
     # info about where the data comes from and where/if to sync
-    origin = models.CharField(max_length=255, unique=True, null=True)
-    local_edits = models.BooleanField(default=False)
+    source_url = models.CharField(max_length=255, unique=True, null=True)
     sync = models.BooleanField(default=True)
     last_sync_date = models.DateTimeField(default=datetime.now)
+    connector = models.ForeignKey(
+        'Connector', on_delete=models.PROTECT, null=True)
 
     # TODO: edit history
 
@@ -55,7 +75,12 @@ class Book(FedireadsModel):
         return '%s/%s/%s' % (base_path, model_name, self.openlibrary_key)
 
     def __repr__(self):
-        return "<{} key={!r} title={!r} author={!r}>".format(self.__class__, self.openlibrary_key, self.title, self.author)
+        return "<{} key={!r} title={!r} author={!r}>".format(
+            self.__class__,
+            self.openlibrary_key,
+            self.title,
+            self.author
+        )
 
 
 class Work(Book):
@@ -82,6 +107,8 @@ class Author(FedireadsModel):
     name = models.CharField(max_length=255)
     last_name = models.CharField(max_length=255, null=True)
     first_name = models.CharField(max_length=255, null=True)
-    aliases = ArrayField(models.CharField(max_length=255), blank=True, default=list)
+    aliases = ArrayField(
+        models.CharField(max_length=255), blank=True, default=list
+    )
     bio = models.TextField(null=True, blank=True)