use axum::response::sse::Event;
use serde::{Deserialize, Serialize};

#[derive(Debug, Clone, PartialEq, Eq, PartialOrd, Ord, Serialize, Deserialize)]
#[serde(rename_all = "lowercase", tag = "status", content = "output")]
pub enum Status {
    Ok,
    Error(Option<String>),
}

impl Default for Status {
    fn default() -> Self {
        Status::Error(None)
    }
}

impl Status {
    pub fn update(&mut self, status: Status) -> bool {
        let modif = *self != status;
        if modif {
            *self = status;
        }
        modif
    }
}

impl<T, E: std::error::Error> From<Result<T, E>> for Status {
    fn from(value: Result<T, E>) -> Self {
        match value {
            Ok(_) => Status::Ok,
            Err(err) => Status::Error(Some(err.to_string())),
        }
    }
}

impl axum::response::IntoResponse for Status {
    fn into_response(self) -> axum::response::Response {
        axum::Json(self).into_response()
    }
}

impl From<Status> for Event {
    fn from(value: Status) -> Self {
        match value {
            Status::Ok => Event::default().event("ok"),
            Status::Error(None) => Event::default().event("error"),
            Status::Error(Some(msg)) => Event::default().event("error").data(msg),
        }
    }
}