feat: host openapi

backend/src/api.rs

@@ -0,0 +1,49 @@
+use crate::OpenIdClient;
+use actix_web::{web, HttpRequest};
+use anyhow::Context;
+use drogue_cloud_service_api::endpoints::Endpoints;
+use serde_json::{json, Value};
+use std::borrow::Cow;
+
+const SPEC: &str = include_str!("../api/index.yaml");
+
+pub fn spec(
+    req: HttpRequest,
+    endpoints: &Endpoints,
+    client: web::Data<OpenIdClient>,
+) -> anyhow::Result<Value> {
+    let mut api: Value = serde_yaml::from_str(SPEC).context("Failed to parse OpenAPI YAML")?;
+
+    let url = endpoints.api.as_ref().map(Cow::from).unwrap_or_else(|| {
+        let ci = req.connection_info();
+        Cow::from(format!("{}://{}", ci.scheme(), ci.host()))
+    });
+
+    // server
+
+    api["servers"] = json!([{ "url": url, "description": "Drogue Cloud API" }]);
+
+    // SSO
+
+    let url = client.client.config().authorization_endpoint.clone();
+
+    api["security"] = json!([{"Drogue Cloud SSO": []}]);
+    api["components"]["securitySchemes"] = json!({
+        "Drogue Cloud SSO": {
+            "type": "oauth2",
+            "description": "SSO",
+            "flows": {
+                "implicit": {
+                    "authorizationUrl": url,
+                    "scopes": {
+                        "openid": "OpenID Connect",
+                    }
+                }
+            }
+        },
+    });
+
+    // render
+
+    Ok(api)
+}