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

use super::app;
use crate::{
    app::App, clock::RequestedAt, error::Internal, login::Password, token::extract::IdentityToken,
};

pub fn router() -> Router<App> {
    Router::new().route("/api/setup", post(on_setup))
}

#[derive(serde::Deserialize)]
struct SetupRequest {
    name: String,
    password: Password,
}

async fn on_setup(
    State(app): State<App>,
    RequestedAt(setup_at): RequestedAt,
    identity: IdentityToken,
    Json(request): Json<SetupRequest>,
) -> Result<(IdentityToken, StatusCode), SetupError> {
    let secret = app
        .setup()
        .initial(&request.name, &request.password, &setup_at)
        .await
        .map_err(SetupError)?;
    let identity = identity.set(secret);
    Ok((identity, StatusCode::NO_CONTENT))
}

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

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