motoko1.mo

//imports

import Nat "mo:base/Nat";
import Nat64 "mo:base/Nat64";
import Cycles "mo:base/ExperimentalCycles";

//canisters

actor HelloCycles {

  //variables

  //let => immutable
  //var => mutable

  let limit = 10_000_000;

  //functions (query, update)

  //":" donus bekler, async
  public func wallet_balance() : async Nat {
    //return -> return ... ;
    //return -> ...
    return Cycles.balance();
  };

  public func wallet_receive() : async { accepted: Nat64 } {
    let available = Cycles.available();
    let accepted = Cycles.accept(Nat.min(available, limit));
    { accepted = Nat64.fromNat(accepted) };
  };

  public func transfer(
    receiver : shared () -> async (),
    amount : Nat) : async { refunded : Nat } {
    Cycles.add(amount);
    await receiver();
    { refunded = Cycles.refunded() };
  };
};