#pragma once

#include <chrono>
#include <string>

#include <mw/error.hpp>
#include <mw/url.hpp>

/// Contents needed to send one passwordless authentication email.
struct AuthenticationEmail
{
    /// Validated recipient address.
    std::string recipient;

    /// Absolute single-use confirmation URL.
    mw::URL confirmation_url;

    /// Challenge expiration instant.
    std::chrono::system_clock::time_point expires_at;
};

/// Configured delivery mechanism for passwordless authentication links.
class EmailSenderInterface
{
public:
    virtual ~EmailSenderInterface() = default;

    /// Deliver one authentication link or return a non-secret error.
    virtual mw::E<void> send(const AuthenticationEmail& email) = 0;

    /// Return whether sends must reserve the global production quota.
    virtual bool usesGlobalQuota() const = 0;
};