web3-proxy/web3_proxy/src/frontend/users.rs
2022-08-11 01:53:27 +00:00

81 lines
2.8 KiB
Rust

// So the API needs to show for any given user:
// - show balance in USD
// - show deposits history (currency, amounts, transaction id)
// - show number of requests used (so we can calculate average spending over a month, burn rate for a user etc, something like "Your balance will be depleted in xx days)
// - the email address of a user if he opted in to get contacted via email
// - all the monitoring and stats but that will come from someplace else if I understand corectly?
// I wonder how we handle payment
// probably have to do manual withdrawals
use axum::{
response::{IntoResponse, Response},
Extension, Json,
};
use axum_client_ip::ClientIp;
use entities::user;
use ethers::{prelude::Address, types::Bytes};
use reqwest::StatusCode;
use sea_orm::ActiveModelTrait;
use serde::Deserialize;
use std::sync::Arc;
use crate::app::Web3ProxyApp;
use super::{rate_limit::RateLimitResult, errors::anyhow_error_into_response};
pub async fn create_user(
// this argument tells axum to parse the request body
// as JSON into a `CreateUser` type
Json(payload): Json<CreateUser>,
Extension(app): Extension<Arc<Web3ProxyApp>>,
ClientIp(ip): ClientIp,
) -> Response {
let _ip = match app.rate_limit_by_ip(ip).await {
Ok(x) => match x.try_into_response().await {
Ok(RateLimitResult::AllowedIp(x)) => x,
Err(err_response) => return err_response,
_ => unimplemented!(),
},
Err(err) => return anyhow_error_into_response(None, None, err).into_response(),
};
// TODO: check invite_code against the app's config or database
if payload.invite_code != "llam4n0des!" {
todo!("proper error message")
}
// TODO: dont unwrap. proper error
let signature: [u8; 65] = payload.signature.as_ref().try_into().unwrap();
// TODO: calculate the expected message for the current user. include domain and a nonce. let timestamp be automatic
let message: siwe::Message = "abc123".parse().unwrap();
if let Err(e) = message.verify(signature, None, None, None) {
// message cannot be correctly authenticated
todo!("proper error message: {}", e)
}
let user = user::ActiveModel {
address: sea_orm::Set(payload.address.to_fixed_bytes().into()),
email: sea_orm::Set(payload.email),
..Default::default()
};
let db = app.db_conn.as_ref().unwrap();
// TODO: proper error message
let user = user.insert(db).await.unwrap();
// TODO: do not expose user ids
(StatusCode::CREATED, Json(user)).into_response()
}
// the input to our `create_user` handler
#[derive(Deserialize)]
pub struct CreateUser {
address: Address,
// TODO: make sure the email address is valid
email: Option<String>,
signature: Bytes,
invite_code: String,
}