use axum::{
	Json,
	extract::State,
	http::StatusCode,
	response::{IntoResponse, Response},
};
use std::{collections::HashMap, sync::Arc};

pub use pile_config::FieldSpec;

use crate::Datasets;

pub type FieldsResponse = HashMap<String, FieldSpec>;

/// Retrieve this dataset's schema.
#[utoipa::path(
	get,
	path = "/schema",
	responses(
		(status = 200, description = "This dataset's schema"),
	)
)]
pub async fn get_schema(State(state): State<Arc<Datasets>>) -> Response {
	let fields: FieldsResponse = state
		.config
		.schema
		.iter()
		.map(|(k, v)| (k.as_str().to_owned(), v.clone()))
		.collect();
	(StatusCode::OK, Json(fields)).into_response()
}