use axum::{
    extract::{Json, State},
    http::StatusCode,
    response::{IntoResponse, Response},
};

use crate::{
    app::App,
    clock::RequestedAt,
    error::Internal,
    login::{Login, Password},
    name::Name,
    setup::app,
    token::extract::IdentityCookie,
};

pub async fn handler(
    State(app): State<App>,
    RequestedAt(setup_at): RequestedAt,
    identity: IdentityCookie,
    Json(request): Json<Request>,
) -> Result<(IdentityCookie, Json<Login>), Error> {
    let (login, secret) = app
        .setup()
        .initial(&request.name, &request.password, &setup_at)
        .await
        .map_err(Error)?;
    let identity = identity.set(secret);
    Ok((identity, Json(login)))
}

#[derive(serde::Deserialize)]
pub struct Request {
    pub name: Name,
    pub password: Password,
}

#[derive(Debug)]
pub struct Error(pub app::Error);

impl IntoResponse for Error {
    fn into_response(self) -> Response {
        let Self(error) = self;
        match error {
            app::Error::InvalidName(_) => {
                (StatusCode::BAD_REQUEST, error.to_string()).into_response()
            }
            app::Error::SetupCompleted => (StatusCode::CONFLICT, error.to_string()).into_response(),
            other => Internal::from(other).into_response(),
        }
    }
}