http: api: support authentication by username

Author: rnovatorov

src/enapter/http/api/auth.py

@@ -5,11 +5,15 @@
 
 class Auth(httpx.Auth):
 
-    def __init__(self, token: str) -> None:
+    def __init__(self, token: str | None = None, user: str | None = None) -> None:
         self.token = token
+        self.user = user
 
     def auth_flow(
         self, request: httpx.Request
     ) -> Generator[httpx.Request, httpx.Response, None]:
-        request.headers["X-Enapter-Auth-Token"] = self.token
+        if self.token is not None:
+            request.headers["X-Enapter-Auth-Token"] = self.token
+        if self.user is not None:
+            request.headers["X-Enapter-Auth-User"] = self.user
         yield request

src/enapter/http/api/client.py

@@ -12,7 +12,7 @@ class Client:
 
     def __init__(self, config: Config) -> None:
         self._config = config
-        self._auth = Auth(token=self._config.token)
+        self._auth = Auth(token=self._config.token, user=self._config.user)
         self._headers = {}
         if self._config.allow_http:
             self._headers["X-Enapter-Allow-HTTP"] = "true"

src/enapter/http/api/config.py

@@ -6,9 +6,10 @@
 @dataclasses.dataclass
 class Config:
 
-    token: str
     base_url: str
     allow_http: bool = dataclasses.field(init=False)
+    token: str | None = None
+    user: str | None = None
 
     def __post_init__(self) -> None:
         self.allow_http = self.base_url.startswith("http://")
@@ -19,4 +20,8 @@ def from_env(
     ) -> Self:
         prefix = namespace + "HTTP_API_"
         base_url = env.get(prefix + "BASE_URL", "https://api.enapter.com")
-        return cls(token=env[prefix + "TOKEN"], base_url=base_url)
+        return cls(
+            base_url=base_url,
+            token=env.get(prefix + "TOKEN"),
+            user=env.get(prefix + "USER"),
+        )