5 files changed, 96 insertions, 11 deletions

diff --git a/mastodon/Mastodon.py b/mastodon/Mastodon.py
index 05ebaaa..44e3b52 100644
--- a/mastodon/Mastodon.py
+++ b/mastodon/Mastodon.py
@@ -481,8 +481,7 @@ class Mastodon:
             # instance() was added in 1.1.0, so our best guess is 1.0.0.
             version_str = "1.0.0"
 
-        self.mastodon_major, self.mastodon_minor, self.mastodon_patch = parse_version_string(
-            version_str)
+        self.mastodon_major, self.mastodon_minor, self.mastodon_patch = parse_version_string(version_str)
         return version_str
 
     def verify_minimum_version(self, version_str, cached=False):
@@ -503,7 +502,24 @@ class Mastodon:
         elif major == self.mastodon_major and minor == self.mastodon_minor and patch > self.mastodon_patch:
             return False
         return True
+    
+    def get_approx_server_time(self):
+        """
+        Retrieve the approximate server time
+
+        We parse this from the hopefully present "Date" header, but make no effort to compensate for latency.
+        """
+        response = self.__api_request("HEAD", "/", return_response_object=True)
+        print(response.headers)
+        if 'Date' in response.headers:
+            server_time_datetime = dateutil.parser.parse(response.headers['Date'])
 
+            # Make sure we're in local time
+            epoch_time = self.__datetime_to_epoch(server_time_datetime)
+            return datetime.datetime.fromtimestamp(epoch_time)
+        else:
+            raise MastodonAPIError("No server time in response.")
+            
     @staticmethod
     def get_supported_version():
         """
@@ -937,7 +953,7 @@ class Mastodon:
 
         Returns a `card dict`_.
         """
-        if self.verify_minimum_version("3.0.0"):
+        if self.verify_minimum_version("3.0.0", cached=True):
             return self.status(id).card
         else:
             id = self.__unpack_id(id)
@@ -2139,7 +2155,7 @@ class Mastodon:
         """
         id = self.__unpack_id(id)
 
-        if self.verify_minimum_version("2.9.2"):
+        if self.verify_minimum_version("2.9.2", cached=True):
             url = '/api/v1/notifications/{0}/dismiss'.format(str(id))
             self.__api_request('POST', url)
         else:
@@ -2590,14 +2606,14 @@ class Mastodon:
             focus = str(focus[0]) + "," + str(focus[1])
 
         if not thumbnail is None:
-            if not self.verify_minimum_version("3.2.0"):
+            if not self.verify_minimum_version("3.2.0", cached=True):
                 raise MastodonVersionError(
                     'Thumbnail requires version > 3.2.0')
             files["thumbnail"] = self.__load_media_file(
                 thumbnail, thumbnail_mime_type)
 
         # Disambiguate URL by version
-        if self.verify_minimum_version("3.1.4"):
+        if self.verify_minimum_version("3.1.4", cached=True):
             ret_dict = self.__api_request(
                 'POST', '/api/v2/media', files=files, params={'description': description, 'focus': focus})
         else:
@@ -2637,7 +2653,7 @@ class Mastodon:
             locals(), ['id', 'thumbnail', 'thumbnail_mime_type'])
 
         if not thumbnail is None:
-            if not self.verify_minimum_version("3.2.0"):
+            if not self.verify_minimum_version("3.2.0", cached=True):
                 raise MastodonVersionError(
                     'Thumbnail requires version > 3.2.0')
             files = {"thumbnail": self.__load_media_file(
@@ -3359,8 +3375,7 @@ class Mastodon:
         else:
             date_time_utc = date_time.astimezone(pytz.utc)
 
-        epoch_utc = datetime.datetime.utcfromtimestamp(
-            0).replace(tzinfo=pytz.utc)
+        epoch_utc = datetime.datetime.utcfromtimestamp(0).replace(tzinfo=pytz.utc)
 
         return (date_time_utc - epoch_utc).total_seconds()
 
@@ -3632,7 +3647,7 @@ class Mastodon:
                     response_object.status_code,
                     response_object.reason,
                     error_msg)
-                    
+
             if return_response_object:
                 return response_object
 
diff --git a/tests/cassettes/test_server_time.yaml b/tests/cassettes/test_server_time.yaml
new file mode 100644
index 0000000..a94b3aa
--- /dev/null
+++ b/tests/cassettes/test_server_time.yaml
@@ -0,0 +1,63 @@
+interactions:
+- request:
+    body: null
+    headers:
+      Accept:
+      - '*/*'
+      Accept-Encoding:
+      - gzip, deflate
+      Authorization:
+      - Bearer __MASTODON_PY_TEST_ACCESS_TOKEN
+      Connection:
+      - keep-alive
+      User-Agent:
+      - tests/v311
+    method: HEAD
+    uri: http://localhost:3000/
+  response:
+    body:
+      string: ''
+    headers:
+      Cache-Control:
+      - max-age=0, public
+      Content-Security-Policy:
+      - 'base-uri ''none''; default-src ''none''; frame-ancestors ''none''; font-src
+        ''self'' http://localhost:3000; img-src ''self'' https: data: blob: http://localhost:3000;
+        style-src ''self'' http://localhost:3000 ''nonce-2+ENJYUdR8BJrDBHHtp0Iw=='';
+        media-src ''self'' https: data: http://localhost:3000; frame-src ''self''
+        https:; manifest-src ''self'' http://localhost:3000; connect-src ''self''
+        data: blob: http://localhost:3000 http://localhost:3000 ws://localhost:4000
+        ws://localhost:3035 http://localhost:3035; script-src ''self'' ''unsafe-inline''
+        ''unsafe-eval'' http://localhost:3000; child-src ''self'' blob: http://localhost:3000;
+        worker-src ''self'' blob: http://localhost:3000'
+      Content-Type:
+      - text/html; charset=utf-8
+      Date:
+      - Thu, 17 Nov 2022 20:42:32 GMT
+      ETag:
+      - W/"9bb3b62cb5fb0388ee3b972a95ee0633"
+      Referrer-Policy:
+      - origin
+      Set-Cookie:
+      - _mastodon_session=S%2F25BrjlEMmL38vg%2FCMcsvHcd8%2BW45HbUkMBwTiqvTgNnzQ%2FhKVYvwORXtqZ5IgNVXl7gMcJ7SxG9y1ks1LN%2Bw3rvgb%2FxECYIlBWY7C3m%2B0aWsWG%2F8iNJsZfHvXlEY3xQxDzenmA2Mw35wRyPiT%2FSUJvwM9I5RtY1iUDsaCPzUbhGFcw3aoGUTdeag37%2FfGsJuG%2F9JsR0jj%2FCgWAlokV8%2Freu8XPUBFFDmjV9SdyFfzsIvP8%2Bd7cAebpCpaqp2DPngNSm8k6xgqXCuMCqpNc09slWQHzfDVqtWPTCMc95SmGpO0DOethwA44F8WbsfX1x5HGml8%3D--x1Ipi2xI5V5ct712--m3eM1Vf8f4oi87fjm0LEvw%3D%3D;
+        path=/; HttpOnly; SameSite=Lax
+      Vary:
+      - Accept
+      X-Content-Type-Options:
+      - nosniff
+      X-Download-Options:
+      - noopen
+      X-Frame-Options:
+      - SAMEORIGIN
+      X-Permitted-Cross-Domain-Policies:
+      - none
+      X-Request-Id:
+      - 9d6b0c84-dff7-481a-a975-c669b8469976
+      X-Runtime:
+      - '0.691929'
+      X-XSS-Protection:
+      - 1; mode=block
+    status:
+      code: 200
+      message: OK
+version: 1
diff --git a/tests/test_instance.py b/tests/test_instance.py
index 2762ecb..5de61f6 100644
--- a/tests/test_instance.py
+++ b/tests/test_instance.py
@@ -1,6 +1,7 @@
 import pytest
 
 from mastodon.Mastodon import MastodonVersionError
+import datetime
 
 @pytest.mark.vcr()
 def test_instance(api):
@@ -36,7 +37,11 @@ def test_emoji(api):
 @pytest.mark.vcr()
 def test_health(api):
     assert api.instance_health() == True
-    
+
+@pytest.mark.vcr()
+def test_server_time(api):
+    assert isinstance(api.get_approx_server_time(), datetime.datetime)
+
 @pytest.mark.vcr()
 def test_nodeinfo(api):
     nodeinfo = api.instance_nodeinfo()
diff --git a/tests/test_notifications.py b/tests/test_notifications.py
index 0be81c6..6e761ce 100644
--- a/tests/test_notifications.py
+++ b/tests/test_notifications.py
@@ -26,6 +26,7 @@ def test_notifications_dismiss_pre_2_9_2(api, api2):
         try:
             status = api2.status_post('@mastodonpy_test hello!')
             notifications = api.notifications()
+            api.verify_minimum_version("2.9.2", cached=False)
             api.notifications_dismiss(notifications[0])
         finally:
             if not status is None:
diff --git a/tests/test_status.py b/tests/test_status.py
index 7e30362..f45634f 100644
--- a/tests/test_status.py
+++ b/tests/test_status.py
@@ -53,6 +53,7 @@ def test_status_card_pre_2_9_2(api):
         import time
         status = api.status_post("http://example.org/")
         time.sleep(5) # Card generation may take time
+        api.verify_minimum_version("2.9.2", cached=False)
         card = api.status_card(status['id'])
         try:
             assert card