Add CORS middleware

.env

@@ -1,2 +1,5 @@
 MONGO_URI="mongodb://user:pass@localhost:27017/"
 ADMIN_TOKEN="admin"
+
+# CORS_ORIGINS='["*"]'
+# CORS_REGEX="http://.*\.example\.com"

backend/app.py

@@ -29,6 +29,17 @@ app = FastAPI(
     openapi_tags=tags_metadata,
 )
 
+if settings.cors_origins or settings.cors_regex:
+    from fastapi.middleware.cors import CORSMiddleware
+
+    app.add_middleware(
+        CORSMiddleware,
+        allow_origins=settings.cors_origins,
+        allow_origin_regex=settings.cors_regex,
+        allow_methods=["*"],
+        allow_headers=["*"],
+    )
+
 Coming = Literal["yes", "no", "maybe"]
 GrammaticalGender = Literal["m", "f", "d"]
 

backend/settings.py

@@ -4,6 +4,8 @@ from pydantic import BaseSettings, SecretStr
 class Settings(BaseSettings):
     mongo_uri: str
     admin_token: SecretStr
+    cors_origins: list[str] | None
+    cors_regex: str | None
 
     class Config:
         env_file = ".env"