use axum::{Json, http::StatusCode, response::{IntoResponse, Response}};
use serde_json::json;
use thiserror::Error;

#[derive(Debug, Error)]
pub enum ResolveError {
    #[error("invalid handle or DID")]
    InvalidIdentifier,
    #[error("could not resolve identity")]
    Upstream,
    #[error("No handles found associated with DID")]
    NoHandleFound,
    #[error("No PDS server found associated with DID")]
    NoPdsFound,
    #[error("Failed to convert an internal type")]
    TypeConversionError,
    #[error("Failed to fetch record")]
    FailedToFetchRecord,

}

impl IntoResponse for ResolveError {
    fn into_response(self) -> Response {
        let status = match &self {
            Self::InvalidIdentifier => StatusCode::BAD_REQUEST,
            Self::Upstream => StatusCode::BAD_GATEWAY,
            Self::NoHandleFound => StatusCode::NOT_FOUND,
            Self::NoPdsFound => StatusCode::NOT_FOUND,
            Self::FailedToFetchRecord => StatusCode::NOT_FOUND,
            _ => StatusCode::INTERNAL_SERVER_ERROR,
        };

        (status, Json(json!({ "error": self.to_string() })))
            .into_response()
    }
}