use tracing::info;
use utoipa::OpenApi;

pub mod tag {
    /// nginx
    pub const NGINX_TAG: &str = "Nginx Agent";
}

#[derive(utoipa::OpenApi)]
#[openapi(
  paths(
    crate::routes::status,
    crate::routes::validate,
    crate::routes::validate_and_reload,
    crate::routes::write_config,
  ),
  components(
      schemas(crate::routes::StatusResp),
      schemas(crate::routes::ValidateAndReloadResp),
      schemas(crate::routes::ValidateBody),
      schemas(crate::routes::WriteConfigBody),
      schemas(crate::routes::ValidateAndReloadBody),
  ),
  tags(
      (name = tag::NGINX_TAG, description = "Nginx Agent API"),
  )
)]
struct ApiDoc;

pub struct GenerateOpenapiArgs {
    pub output: String,
}

pub async fn generate_openapi_doc(
    args: &GenerateOpenapiArgs,
) -> Result<(), Box<dyn std::error::Error + Send + Sync>> {
    info!("Generating OpenAPI documentation...");
    let doc = ApiDoc::openapi();
    let json = doc
        .to_pretty_json()
        .expect("Failed to serialize OpenAPI doc to JSON");
    std::fs::write(&args.output, json).expect("Failed to write OpenAPI doc to file");
    info!("OpenAPI documentation generated at {}", args.output);
    Ok(())
}