Add informational requests into json API

pinnwand/http.py

@@ -238,6 +238,18 @@ async def post(self) -> None:
             )
 
 
+class APILexers(Base):
+    async def get(self) -> None:
+        self.write(utility.list_languages())
+
+
+class APIExpiries(Base):
+    async def get(self) -> None:
+        self.write(
+            {name: str(delta) for name, delta in utility.expiries.items()}
+        )
+
+
 class RemovalPage(Base):
     """Serve the removal page."""
 
@@ -273,6 +285,8 @@ def make_application() -> tornado.web.Application:
             (r"/json/new", APINew),
             (r"/json/remove", APIRemove),
             (r"/json/show/(.*)", APIShow),
+            (r"/json/lexers", APILexers),
+            (r"/json/expiries", APIExpiries),
             (
                 r"/static/(.*)",
                 tornado.web.StaticFileHandler,

test/test_http.py

@@ -7,6 +7,7 @@
 
 from pinnwand import http
 from pinnwand import database
+from pinnwand import utility
 
 
 class WebsiteTestCase(tornado.testing.AsyncHTTPTestCase):
@@ -149,3 +150,15 @@ def test_api_remove(self) -> None:
         response = self.fetch(f"/json/show/{data['paste_id']}")
 
         assert response.code == 404
+
+    def test_api_get_lexers(self) -> None:
+        response = self.fetch("/json/lexers", method="GET")
+
+        assert response.code == 200
+        assert json.loads(response.body) == utility.list_languages()
+
+    def test_api_get_expiries(self) -> None:
+        response = self.fetch("/json/expiries", method="GET")
+
+        assert response.code == 200
+        assert json.loads(response.body).keys() == utility.expiries.keys()