systemprompt_api/services/static_content/
fallback.rs

1use axum::extract::State;
2use axum::http::{HeaderMap, Method, StatusCode, Uri};
3use axum::response::{IntoResponse, Json};
4use serde_json::json;
5use systemprompt_models::modules::ApiPaths;
6
7use super::static_files::StaticContentState;
8
9pub async fn smart_fallback_handler(
10    State(state): State<StaticContentState>,
11    uri: Uri,
12    method: Method,
13    headers: HeaderMap,
14    req_ctx: Option<axum::Extension<systemprompt_models::RequestContext>>,
15) -> impl IntoResponse {
16    let path = uri.path();
17
18    if is_api_path(path) {
19        return (
20            StatusCode::NOT_FOUND,
21            Json(json!({
22                "error": "Not Found",
23                "message": format!("No route matches {method} {path}"),
24                "path": path,
25                "suggestions": get_api_suggestions(path)
26            })),
27        )
28            .into_response();
29    }
30
31    super::serve_static_content(State(state), uri, headers, req_ctx)
32        .await
33        .into_response()
34}
35
36fn is_api_path(path: &str) -> bool {
37    path.starts_with(ApiPaths::API_BASE)
38        || path.starts_with(ApiPaths::WELLKNOWN_BASE)
39        || path.starts_with("/server/")
40        || path.starts_with("/mcp/")
41        || path.starts_with("/health")
42        || path.starts_with(ApiPaths::OPENAPI_BASE)
43        || path.starts_with(ApiPaths::DOCS_BASE)
44        || path.starts_with(ApiPaths::SWAGGER_BASE)
45        || path.starts_with("/v1/")
46        || path.starts_with("/auth/")
47        || path.starts_with("/oauth/")
48}
49
50fn get_api_suggestions(path: &str) -> Vec<String> {
51    if path.starts_with(ApiPaths::API_BASE) {
52        vec![
53            format!("{} - API discovery endpoint", ApiPaths::DISCOVERY),
54            format!("{} - Health check", ApiPaths::HEALTH),
55            format!(
56                "{} - Core services (contexts, tasks, artifacts)",
57                ApiPaths::CORE_BASE
58            ),
59            format!("{} - Agent registry", ApiPaths::AGENTS_REGISTRY),
60            format!("{} - MCP server registry", ApiPaths::MCP_REGISTRY),
61        ]
62    } else if path.starts_with(ApiPaths::WELLKNOWN_BASE) {
63        vec![
64            format!("{} - OAuth metadata", ApiPaths::WELLKNOWN_OAUTH_SERVER),
65            format!("{} - Agent card", ApiPaths::WELLKNOWN_AGENT_CARD),
66        ]
67    } else if path.contains("health") {
68        vec![format!("{} - Health check endpoint", ApiPaths::HEALTH)]
69    } else if path.contains("openapi") || path.contains("swagger") {
70        vec![format!(
71            "{} - API discovery (OpenAPI not yet available)",
72            ApiPaths::DISCOVERY
73        )]
74    } else {
75        vec![
76            format!("{} - Start here for API discovery", ApiPaths::DISCOVERY),
77            "/ - Frontend application".to_string(),
78        ]
79    }
80}
systemprompt_api/services/static_content/fallback.rs

systemprompt_api/services/static_content/
fallback.rs
