bumped up version to 0.0.6

## Summary

Resolve `{ENV_VAR}` placeholders in the OpenAPI spec before serving it. Replace the monolithic `x-introspect-url` extension with composable `x-server-url` + individual `x-*-path` fields so auth endpoints are configurable per-environment without hardcoding.

## Changes

- **`openapi_first/app.py`** — add `_resolve_spec_env_vars()` that replaces `{ENV_VAR}` patterns (e.g. `{AUTH_SERVER}`) with the corresponding OS environment variable before returning the spec JSON. Called in `__init__` after spec load.
- **`openapi_first/security.py`** — build the introspection URL dynamically from `x-server-url` + `x-introspect-path` extensions on the `bearerAuth` security scheme, instead of reading a single `x-introspect-url`.

## Migration

Existing specs using `x-introspect-url: "https://auth.example.com/introspect"` must switch to the new extension format:

```yaml
components:
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      x-server-url: "{AUTH_SERVER}"
      x-login-path: "/login"
      x-register-path: "/register"
      x-logout-path: "/logout"
      x-me-path: "/me"
      x-introspect-path: "/introspect"

Reviewed-on: #3
Co-authored-by: Vishesh 'ironeagle' Bangotra <aetoskia@gmail.com>
Co-committed-by: Vishesh 'ironeagle' Bangotra <aetoskia@gmail.com>

openapi_first/app.py

@@ -32,12 +32,35 @@ Notes:
             - Alter FastAPI dependency injection semantics.
 """
 
+import os
+import re
+
 from fastapi import FastAPI
 
 from .binder import bind_routes
 from .loader import load_openapi
 from .security import make_security_dependencies, parse_security_schemes
 
+_env_pattern = re.compile(r"\{(\w+)\}")
+
+
+def _resolve_env(value: str) -> str:
+    """Replace {ENV_VAR} placeholders with values from os.environ."""
+    def _replace(m: re.Match) -> str:
+        return os.environ.get(m.group(1), m.group(0))
+    return _env_pattern.sub(_replace, value)
+
+
+def _resolve_spec_env_vars(obj):
+    """Recursively resolve {ENV_VAR} in all string values of the spec."""
+    if isinstance(obj, str):
+        return _resolve_env(obj)
+    if isinstance(obj, dict):
+        return {k: _resolve_spec_env_vars(v) for k, v in obj.items()}
+    if isinstance(obj, list):
+        return [_resolve_spec_env_vars(v) for v in obj]
+    return obj
+
 
 class OpenAPIFirstApp(FastAPI):
     """
@@ -107,7 +130,7 @@ class OpenAPIFirstApp(FastAPI):
         super().__init__(**fastapi_kwargs)
 
         # Load and validate OpenAPI specification
-        self._openapi_spec = load_openapi(openapi_path)
+        self._openapi_spec = _resolve_spec_env_vars(load_openapi(openapi_path))
 
         # Parse security schemes and build per-route dependencies
         security_schemes = parse_security_schemes(self._openapi_spec)

openapi_first/security.py

@@ -97,7 +97,10 @@ def _build_dependency(scheme_name: str, scheme: dict) -> Callable | None:
     scheme_type = scheme.get("type")
 
     if scheme_type == "http" and scheme.get("scheme") == "bearer":
-        return _make_bearer_dependency(scheme.get("x-introspect-url"))
+        server_url = scheme.get("x-server-url", "")
+        introspect_path = scheme.get("x-introspect-path", "/introspect")
+        introspect_url = server_url + introspect_path if server_url else None
+        return _make_bearer_dependency(introspect_url)
 
     return None
 

pyproject.toml

@@ -5,7 +5,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "openapi-first"
-version = "0.0.5"
+version = "0.0.6"
 description = "Strict OpenAPI-first application bootstrap for FastAPI."
 readme = "README.md"
 requires-python = ">=3.10"