#include "BlogSession.h"
#include <Wt/Auth/AuthService.h>
#include <Wt/Auth/GoogleService.h>
#include <Wt/Auth/HashFunction.h>
#include <Wt/Auth/PasswordService.h>
#include <Wt/Auth/PasswordStrengthValidator.h>
#include <Wt/Auth/PasswordVerifier.h>
#include <Wt/Dbo/FixedSqlConnectionPool.h>

class BlogOAuth : public std::vector<const Wt::Auth::OAuthService *> {
public:
    ~BlogOAuth() {
        for (unsigned i = 0; i < size(); ++i) delete (*this)[i];
    }
};

Wt::Auth::AuthService blogAuth;
Wt::Auth::PasswordService blogPasswords(blogAuth);
BlogOAuth blogOAuth;

BlogSession::BlogSession(Wt::Dbo::SqlConnectionPool &connectionPool)
    : m_connectionPool(connectionPool), m_users(*this) {
}

void BlogSession::configureAuth() {
    blogAuth.setAuthTokensEnabled(true, "bloglogin");

    std::unique_ptr<Wt::Auth::PasswordVerifier> verifier = std::make_unique<Wt::Auth::PasswordVerifier>();
    verifier->addHashFunction(std::make_unique<Wt::Auth::BCryptHashFunction>(7));
#ifdef WT_WITH_SSL
    verifier->addHashFunction(std::make_unique<Wt::Auth::SHA1HashFunction>());
#endif
#ifdef HAVE_CRYPT
    verifier->addHashFunction(std::make_unique<UnixCryptHashFunction>());
#endif
    blogPasswords.setVerifier(std::move(verifier));
    blogPasswords.setPasswordThrottle(std::make_unique<Wt::Auth::AuthThrottle>());
    blogPasswords.setStrengthValidator(std::make_unique<Wt::Auth::PasswordStrengthValidator>());

    if (Wt::Auth::GoogleService::configured()) blogOAuth.push_back(new Wt::Auth::GoogleService(blogAuth));
}

std::unique_ptr<Wt::Dbo::SqlConnectionPool> BlogSession::createConnectionPool(const std::string &sqlite3) {
    auto connection = std::make_unique<Wt::Dbo::backend::Sqlite3>(sqlite3);

    connection->setProperty("show-queries", "true");
    connection->setDateTimeStorage(Wt::Dbo::SqlDateTimeType::DateTime,
                                   Wt::Dbo::backend::DateTimeStorage::PseudoISO8601AsText);

    return std::make_unique<Wt::Dbo::FixedSqlConnectionPool>(std::move(connection), 10);
}

Wt::Dbo::ptr<User> BlogSession::user() const {
    if (m_login.loggedIn())
        return m_users.find(m_login.user());
    else
        return Wt::Dbo::ptr<User>();
}

Wt::Signal<Wt::Dbo::ptr<Comment>> &BlogSession::commentsChanged() {
    return m_commentsChanged;
}

Wt::Auth::PasswordService *BlogSession::passwordAuth() const {
    return &blogPasswords;
}

const std::vector<const Wt::Auth::OAuthService *> &BlogSession::oAuth() const {
    return blogOAuth;
}