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#![no_std]
#![allow(clippy::string_lit_as_bytes)]
#[macro_use]
extern crate elrond_wasm;
imports!();
#[elrond_wasm_derive::module(UsersModuleImpl)]
pub trait UsersModule {
#[view(getUserId)]
#[storage_get("user_id")]
fn get_user_id(&self, address: &Address) -> usize;
#[storage_set("user_id")]
fn set_user_id(&self, address: &Address, user_id: usize);
#[view(getUserAddress)]
#[storage_get("user_address")]
fn get_user_address(&self, user_id: usize) -> Address;
#[storage_set("user_address")]
fn set_user_address(&self, user_id: usize, address: &Address);
#[view(getNumUsers)]
#[storage_get("num_users")]
fn get_num_users(&self) -> usize;
#[storage_set("num_users")]
fn set_num_users(&self, num_users: usize);
fn get_or_create_user(&self, address: &Address) -> usize {
let mut user_id = self.get_user_id(&address);
if user_id == 0 {
let mut num_users = self.get_num_users();
num_users += 1;
self.set_num_users(num_users);
user_id = num_users;
self.set_user_id(&address, user_id);
self.set_user_address(user_id, &address);
}
user_id
}
#[endpoint(updateUserAddress)]
fn update_user_address(&self, #[var_args] addresses: VarArgs<Address>) -> SCResult<()> {
for address in addresses.into_vec() {
let user_id = self.get_user_id(&address);
require!(user_id > 0, "unknown address");
self.set_user_address(user_id, &address);
}
Ok(())
}
}