server/posts: add hasCustomThumbnail to post info

API.md

@@ -1354,7 +1354,8 @@ One file together with its metadata posted to the site.
     "ownScore":           <own-score>,
     "featureCount":       <feature-count>,
     "lastFeatureTime":    <last-feature-time>,
-    "favoritedBy":     <favorited-by>
+    "favoritedBy":        <favorited-by>,
+    "hasCustomThumbnail": <has-custom-thumbnail>
 }
 ```
 
@@ -1403,6 +1404,7 @@ One file together with its metadata posted to the site.
 - `<last-feature-time>`: the last time the post was featured, formatted as per
   RFC 3339.
 - `<favorited-by>`: list of users, serialized as [user resources](#user).
+- `<has-custom-thumbnail>`: whether the post uses custom thumbnail.
 
 ## Detailed post
 **Description**

server/szurubooru/func/files.py

@@ -9,6 +9,9 @@ def delete(path):
     if os.path.exists(full_path):
         os.unlink(full_path)
 
+def has(path):
+    return os.path.exists(_get_full_path(path))
+
 def get(path):
     full_path = _get_full_path(path)
     if not os.path.exists(full_path):

server/szurubooru/func/posts.py

@@ -85,6 +85,7 @@ def serialize_post(post, authenticated_user):
         'lastFeatureTime': post.last_feature_time,
         'favoritedBy': [users.serialize_user(rel.user, authenticated_user) \
             for rel in post.favorited_by],
+        'hasCustomThumbnail': files.has(get_post_thumbnail_backup_path(post)),
     }
 
     if authenticated_user:

server/szurubooru/tests/api/test_comment_creating.py

@@ -4,8 +4,10 @@ from szurubooru import api, db, errors
 from szurubooru.func import util, posts
 
 @pytest.fixture
-def test_ctx(config_injector, context_factory, post_factory, user_factory):
+def test_ctx(
+        tmpdir, config_injector, context_factory, post_factory, user_factory):
     config_injector({
+        'data_dir': str(tmpdir),
         'data_url': 'http://example.com',
         'ranks': ['anonymous', 'regular_user'],
         'rank_names': {'anonymous': 'Peasant', 'regular_user': 'Lord'},

server/szurubooru/tests/api/test_comment_rating.py

@@ -4,8 +4,10 @@ from szurubooru import api, db, errors
 from szurubooru.func import util, comments, scores
 
 @pytest.fixture
-def test_ctx(config_injector, context_factory, user_factory, comment_factory):
+def test_ctx(
+        tmpdir, config_injector, context_factory, user_factory, comment_factory):
     config_injector({
+        'data_dir': str(tmpdir),
         'data_url': 'http://example.com',
         'ranks': ['anonymous', 'regular_user', 'mod'],
         'rank_names': {'anonymous': 'Peasant', 'regular_user': 'Lord'},

server/szurubooru/tests/api/test_comment_retrieving.py

@@ -4,8 +4,10 @@ from szurubooru import api, db, errors
 from szurubooru.func import util, comments
 
 @pytest.fixture
-def test_ctx(context_factory, config_injector, user_factory, comment_factory):
+def test_ctx(
+        tmpdir, context_factory, config_injector, user_factory, comment_factory):
     config_injector({
+        'data_dir': str(tmpdir),
         'data_url': 'http://example.com',
         'ranks': ['anonymous', 'regular_user', 'mod', 'admin'],
         'rank_names': {'regular_user': 'Peasant'},

server/szurubooru/tests/api/test_comment_updating.py

@@ -4,8 +4,10 @@ from szurubooru import api, db, errors
 from szurubooru.func import util, comments
 
 @pytest.fixture
-def test_ctx(config_injector, context_factory, user_factory, comment_factory):
+def test_ctx(
+        tmpdir, config_injector, context_factory, user_factory, comment_factory):
     config_injector({
+        'data_dir': str(tmpdir),
         'data_url': 'http://example.com',
         'ranks': ['anonymous', 'regular_user', 'mod'],
         'rank_names': {'anonymous': 'Peasant', 'regular_user': 'Lord', 'mod': 'King'},

server/szurubooru/tests/api/test_post_favoriting.py

@@ -4,8 +4,10 @@ from szurubooru import api, db, errors
 from szurubooru.func import util, posts
 
 @pytest.fixture
-def test_ctx(config_injector, context_factory, user_factory, post_factory):
+def test_ctx(
+        tmpdir, config_injector, context_factory, user_factory, post_factory):
     config_injector({
+        'data_dir': str(tmpdir),
         'data_url': 'http://example.com',
         'ranks': ['anonymous', 'regular_user', 'mod'],
         'rank_names': {'anonymous': 'Peasant', 'regular_user': 'Lord'},

server/szurubooru/tests/api/test_post_featuring.py

@@ -4,8 +4,10 @@ from szurubooru import api, db, errors
 from szurubooru.func import util, posts
 
 @pytest.fixture
-def test_ctx(context_factory, config_injector, user_factory, post_factory):
+def test_ctx(
+        tmpdir, context_factory, config_injector, user_factory, post_factory):
     config_injector({
+        'data_dir': str(tmpdir),
         'data_url': 'http://example.com',
         'privileges': {
             'posts:feature': 'regular_user',

server/szurubooru/tests/api/test_post_rating.py

@@ -3,8 +3,10 @@ from szurubooru import api, db, errors
 from szurubooru.func import util, posts, scores
 
 @pytest.fixture
-def test_ctx(config_injector, context_factory, user_factory, post_factory):
+def test_ctx(
+        tmpdir, config_injector, context_factory, user_factory, post_factory):
     config_injector({
+        'data_dir': str(tmpdir),
         'data_url': 'http://example.com',
         'ranks': ['anonymous', 'regular_user'],
         'rank_names': {'anonymous': 'Peasant', 'regular_user': 'Lord'},

server/szurubooru/tests/api/test_post_retrieving.py

@@ -4,8 +4,10 @@ from szurubooru import api, db, errors
 from szurubooru.func import util, posts
 
 @pytest.fixture
-def test_ctx(context_factory, config_injector, user_factory, post_factory):
+def test_ctx(
+        tmpdir, context_factory, config_injector, user_factory, post_factory):
     config_injector({
+        'data_dir': str(tmpdir),
         'data_url': 'http://example.com',
         'privileges': {
             'posts:list': 'regular_user',

server/szurubooru/tests/func/test_posts.py

@@ -65,7 +65,8 @@ def test_serialize_empty_post():
     assert posts.serialize_post(None, None) is None
 
 def test_serialize_post(post_factory, user_factory, tag_factory):
-    with unittest.mock.patch('szurubooru.func.users.serialize_user'):
+    with unittest.mock.patch('szurubooru.func.users.serialize_user'), \
+        unittest.mock.patch('szurubooru.func.posts.files.has', return_value=True):
         users.serialize_user.side_effect = lambda user, auth_user: user.name
 
         auth_user = user_factory(name='auth user')
@@ -140,6 +141,7 @@ def test_serialize_post(post_factory, user_factory, tag_factory):
         'featureCount': 1,
         'lastFeatureTime': datetime.datetime(1999, 1, 1),
         'favoritedBy': ['fav1'],
+        'hasCustomThumbnail': True,
     }
 
 def test_serialize_post_with_details(post_factory, comment_factory, user_factory):