#pragma once

#include "providers/twitch/TwitchAccount.hpp"
#include "util/SharedPtrElementLess.hpp"
#include "common/SignalVector2.hpp"

#include <pajlada/settings/setting.hpp>

#include <mutex>
#include <vector>

//
// Warning: This class is not supposed to be created directly.
// 			Get yourself an instance from our friends over at AccountManager.hpp
//

namespace chatterino {
class AccountController;
}

class TwitchAccountManager
{
    TwitchAccountManager();

public:
    struct UserData {
        QString username;
        QString userID;
        QString clientID;
        QString oauthToken;
    };

    // Returns the current twitchUsers, or the anonymous user if we're not currently logged in
    std::shared_ptr<TwitchAccount> getCurrent();

    std::vector<QString> getUsernames() const;

    std::shared_ptr<TwitchAccount> findUserByUsername(const QString &username) const;
    bool userExists(const QString &username) const;

    void reloadUsers();
    void load();

    bool isLoggedIn() const;

    pajlada::Settings::Setting<std::string> currentUsername = {"/accounts/current", ""};
    pajlada::Signals::NoArgSignal currentUserChanged;
    pajlada::Signals::NoArgSignal userListUpdated;

    util::SortedSignalVector<std::shared_ptr<TwitchAccount>,
                             util::SharedPtrElementLess<TwitchAccount>>
        accounts;

private:
    enum class AddUserResponse {
        UserAlreadyExists,
        UserValuesUpdated,
        UserAdded,
    };
    AddUserResponse addUser(const UserData &data);
    bool removeUser(TwitchAccount *account);

    std::shared_ptr<TwitchAccount> currentUser;

    std::shared_ptr<TwitchAccount> anonymousUser;
    mutable std::mutex mutex;

    friend class chatterino::controllers::accounts::AccountController;
};

}  // namespace chatterino