From e3c013f21ea8ffb924608beb9a48bfd893e0cf0d Mon Sep 17 00:00:00 2001
From: Stefan Haun <mail@tuxathome.de>
Date: Wed, 17 Sep 2025 09:52:21 +0200
Subject: [PATCH 1/3] Add a base CORS handler for HTTP endpoints

Copied from https://github.com/penguineer/RedmineActionablesCollector/commit/9a0a29e107941b2ca66c094cb19da19e80a08ebf
with the authors permission.
---
 src/app.py | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/src/app.py b/src/app.py
index 2768c0b..b745a3c 100644
--- a/src/app.py
+++ b/src/app.py
@@ -1,5 +1,6 @@
 #!/usr/bin/python3
 from abc import ABC
+from typing import Any
 
 import tornado.ioloop
 import tornado.web
@@ -21,6 +22,21 @@
 
 startup_timestamp = datetime.now()
 
+class BaseCORSHandler(tornado.web.RequestHandler):
+    def set_default_headers(self):
+        self.set_header("Access-Control-Allow-Origin", "*")
+        self.set_header("Access-Control-Allow-Headers", "x-requested-with, content-type")
+        self.set_header("Access-Control-Allow-Methods", "GET, POST, PUT, DELETE, OPTIONS")
+
+    def options(self, *args, **kwargs):
+        self.set_default_headers()
+        self.set_status(204)
+        self.finish()
+
+    def write_error(self, status_code: int, **kwargs: Any) -> None:
+        self.set_default_headers()
+        super().write_error(status_code, **kwargs)
+
 
 class HealthHandler(tornado.web.RequestHandler, ABC):
     # noinspection PyAttributeOutsideInit

From ad7a2082f86796605026d6857d84f54186426fc2 Mon Sep 17 00:00:00 2001
From: Stefan Haun <mail@tuxathome.de>
Date: Wed, 17 Sep 2025 09:52:46 +0200
Subject: [PATCH 2/3] Use CORS handler for SpaceAPI endpoints

---
 src/app.py | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/app.py b/src/app.py
index b745a3c..9db6096 100644
--- a/src/app.py
+++ b/src/app.py
@@ -90,7 +90,7 @@ def get(self):
         self.finish()
 
 
-class SpaceAPIHandler(tornado.web.RequestHandler, ABC):
+class SpaceAPIHandler(BaseCORSHandler, ABC):
     # noinspection PyAttributeOutsideInit
     def initialize(self, observer):
         self.observer = observer
@@ -100,7 +100,7 @@ def get(self):
         self.write(json.dumps(self.observer.get_space_api_entry(), indent=4))
         self.finish()
 
-class SpaceStateTextHandler(tornado.web.RequestHandler, ABC):
+class SpaceStateTextHandler(BaseCORSHandler, ABC):
     # noinspection PyAttributeOutsideInit
     def initialize(self, observer):
         self.observer = observer
@@ -111,7 +111,7 @@ def get(self):
         self.finish()
 
 
-class PictureHandler(tornado.web.RequestHandler, ABC):
+class PictureHandler(BaseCORSHandler, ABC):
     # noinspection PyAttributeOutsideInit
     def initialize(self, picture_manager):
         self.picture_manager = picture_manager

From f568c52e3054df651e4d2278e4176890b1645d01 Mon Sep 17 00:00:00 2001
From: Stefan Haun <mail@tuxathome.de>
Date: Wed, 17 Sep 2025 10:03:41 +0200
Subject: [PATCH 3/3] Set the JSON charset according to spec

See https://spaceapi.io/provide-an-endpoint/ for details
---
 src/app.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/app.py b/src/app.py
index 9db6096..efe8451 100644
--- a/src/app.py
+++ b/src/app.py
@@ -96,7 +96,7 @@ def initialize(self, observer):
         self.observer = observer
 
     def get(self):
-        self.set_header("Content-Type", "application/json")
+        self.set_header("Content-Type", "application/json; charset=utf-8")
         self.write(json.dumps(self.observer.get_space_api_entry(), indent=4))
         self.finish()