use axum::response::Json;
use serde_json::Value;
use utoipa::openapi::OpenApiBuilder;

/// GET /docs/openapi.json
///
/// 返回 OpenAPI 3.0 规范 JSON 文档
pub async fn openapi_spec() -> Json<Value> {
    let mut info = utoipa::openapi::Info::new(
        "ERP Platform API",
        env!("CARGO_PKG_VERSION"),
    );
    info.description = Some("ERP 平台底座 REST API 文档".to_string());

    let spec = OpenApiBuilder::new()
        .info(info)
        .build();
    Json(serde_json::to_value(spec).unwrap_or_default())
}