server: refactor + add type hinting

- Added type hinting (for now, 3.5-compatible)
- Split `db` namespace into `db` module and `model` namespace
- Changed elastic search to be created lazily for each operation
- Changed to class based approach in entity serialization to allow
  stronger typing
- Removed `required` argument from `context.get_*` family of functions;
  now it's implied if `default` argument is omitted
- Changed `unalias_dict` implementation to use less magic inputs

1 files changed, 5 insertions, 5 deletions

diff --git a/server/szurubooru/tests/api/test_snapshot_retrieving.py b/server/szurubooru/tests/api/test_snapshot_retrieving.py
index 73b6f06..facbcd8 100644
--- a/server/szurubooru/tests/api/test_snapshot_retrieving.py
+++ b/server/szurubooru/tests/api/test_snapshot_retrieving.py
@@ -1,10 +1,10 @@
 from datetime import datetime
 import pytest
-from szurubooru import api, db, errors
+from szurubooru import api, db, model, errors
 
 
 def snapshot_factory():
-    snapshot = db.Snapshot()
+    snapshot = model.Snapshot()
     snapshot.creation_time = datetime(1999, 1, 1)
     snapshot.resource_type = 'dummy'
     snapshot.resource_pkey = 1
@@ -17,7 +17,7 @@ def snapshot_factory():
 @pytest.fixture(autouse=True)
 def inject_config(config_injector):
     config_injector({
-        'privileges': {'snapshots:list': db.User.RANK_REGULAR},
+        'privileges': {'snapshots:list': model.User.RANK_REGULAR},
     })
 
 
@@ -29,7 +29,7 @@ def test_retrieving_multiple(user_factory, context_factory):
     result = api.snapshot_api.get_snapshots(
         context_factory(
             params={'query': '', 'page': 1},
-            user=user_factory(rank=db.User.RANK_REGULAR)))
+            user=user_factory(rank=model.User.RANK_REGULAR)))
     assert result['query'] == ''
     assert result['page'] == 1
     assert result['pageSize'] == 100
@@ -43,4 +43,4 @@ def test_trying_to_retrieve_multiple_without_privileges(
         api.snapshot_api.get_snapshots(
             context_factory(
                 params={'query': '', 'page': 1},
-                user=user_factory(rank=db.User.RANK_ANONYMOUS)))
+                user=user_factory(rank=model.User.RANK_ANONYMOUS)))