#![feature(if_let_guard)]

use log::{debug, trace};
use spacetimedb::{ReducerContext, Table, reducer};

mod reducers;
mod tables;
use crate::tables::*;

#[reducer(client_connected)]
pub fn connect(ctx: &ReducerContext) -> Result<(), String> {
    let player = if let Some(player) = ctx.db.logged_out_user().identity().find(ctx.sender()) {
        let player = ctx.db.user().insert(player);
        ctx.db.logged_out_user().identity().delete(ctx.sender());
        player
    } else {
        debug!("inserting new user with identity {:?}", ctx.sender());
        ctx.db.user().try_insert(User {
            identity: ctx.sender(),
            name: String::new(),
            config_id: 0,
            lobby_id: 0,
        })?
    };

    debug!("user connected: {:?}", player);

    Ok(())
}

#[reducer(client_disconnected)]
pub fn disconnect(ctx: &ReducerContext) -> Result<(), String> {
    let user = ctx
        .db
        .user()
        .identity()
        .find(ctx.sender())
        .ok_or_else(|| format!("can't find player {} to disconnect", ctx.sender()))?;

    let user = ctx.db.logged_out_user().insert(user);
    if !ctx.db.user().identity().delete(ctx.sender()) {
        Err(format!("can't delete user: {user:?}"))?
    }

    debug!("user disconnected: {:?}", user);

    Ok(())
}

// #[reducer(init)]
// pub fn init(_ctx: &ReducerContext) {
//     // Called when the module is initially published
// }

// #[reducer(client_connected)]
// pub fn identity_connected(_ctx: &ReducerContext) {
//     // Called everytime a new client connects
// }

// #[reducer]
// pub fn add(ctx: &ReducerContext, name: String) {
// ctx.db.player().insert(Player { name });
// }

// #[reducer]
// pub fn say_hello(ctx: &ReducerContext) {
//     for person in ctx.db.person().iter() {
//         log::info!("Hello, {}!", person.name);
//     }
//     log::info!("Hello, World!");
// }

// #[reducer]
// pub fn set_name(ctx: &ReducerContext, name: String) -> Result<(), String> {
//     if name.is_empty() {
//         return Err("names must not be empty".into());
//     }
//     if let Some(player) = ctx.db.player().identity().find(ctx.sender()) {
//         ctx.db.player().identity().update(Player {
//             name: Some(name),
//             ..player
//         });
//         Ok(())
//     } else {
//         Err("cannot set name for unknown user".into())
//     }
// }