#include <IO/ConnectionTimeouts.h>
#include <Poco/Util/AbstractConfiguration.h>
#include <Interpreters/Context.h>

namespace DB
{

ConnectionTimeouts::ConnectionTimeouts(
    Poco::Timespan connection_timeout_,
    Poco::Timespan send_timeout_,
    Poco::Timespan receive_timeout_)
    : connection_timeout(connection_timeout_)
    , send_timeout(send_timeout_)
    , receive_timeout(receive_timeout_)
    , tcp_keep_alive_timeout(0)
    , http_keep_alive_timeout(0)
    , secure_connection_timeout(connection_timeout)
    , hedged_connection_timeout(receive_timeout_)
    , receive_data_timeout(receive_timeout_)
    , handshake_timeout(receive_timeout_)
{
}

ConnectionTimeouts::ConnectionTimeouts(
    Poco::Timespan connection_timeout_,
    Poco::Timespan send_timeout_,
    Poco::Timespan receive_timeout_,
    Poco::Timespan tcp_keep_alive_timeout_,
    Poco::Timespan handshake_timeout_)
    : connection_timeout(connection_timeout_)
    , send_timeout(send_timeout_)
    , receive_timeout(receive_timeout_)
    , tcp_keep_alive_timeout(tcp_keep_alive_timeout_)
    , http_keep_alive_timeout(0)
    , secure_connection_timeout(connection_timeout)
    , hedged_connection_timeout(receive_timeout_)
    , receive_data_timeout(receive_timeout_)
    , handshake_timeout(handshake_timeout_)
{
}

ConnectionTimeouts::ConnectionTimeouts(
    Poco::Timespan connection_timeout_,
    Poco::Timespan send_timeout_,
    Poco::Timespan receive_timeout_,
    Poco::Timespan tcp_keep_alive_timeout_,
    Poco::Timespan http_keep_alive_timeout_,
    Poco::Timespan handshake_timeout_)
    : connection_timeout(connection_timeout_)
    , send_timeout(send_timeout_)
    , receive_timeout(receive_timeout_)
    , tcp_keep_alive_timeout(tcp_keep_alive_timeout_)
    , http_keep_alive_timeout(http_keep_alive_timeout_)
    , secure_connection_timeout(connection_timeout)
    , hedged_connection_timeout(receive_timeout_)
    , receive_data_timeout(receive_timeout_)
    , handshake_timeout(handshake_timeout_)
{
}

ConnectionTimeouts::ConnectionTimeouts(
    Poco::Timespan connection_timeout_,
    Poco::Timespan send_timeout_,
    Poco::Timespan receive_timeout_,
    Poco::Timespan tcp_keep_alive_timeout_,
    Poco::Timespan http_keep_alive_timeout_,
    Poco::Timespan secure_connection_timeout_,
    Poco::Timespan hedged_connection_timeout_,
    Poco::Timespan receive_data_timeout_,
    Poco::Timespan handshake_timeout_)
    : connection_timeout(connection_timeout_)
    , send_timeout(send_timeout_)
    , receive_timeout(receive_timeout_)
    , tcp_keep_alive_timeout(tcp_keep_alive_timeout_)
    , http_keep_alive_timeout(http_keep_alive_timeout_)
    , secure_connection_timeout(secure_connection_timeout_)
    , hedged_connection_timeout(hedged_connection_timeout_)
    , receive_data_timeout(receive_data_timeout_)
    , handshake_timeout(handshake_timeout_)
{
}

Poco::Timespan ConnectionTimeouts::saturate(Poco::Timespan timespan, Poco::Timespan limit)
{
    if (limit.totalMicroseconds() == 0)
        return timespan;
    else
        return (timespan > limit) ? limit : timespan;
}

ConnectionTimeouts ConnectionTimeouts::getSaturated(Poco::Timespan limit) const
{
    return ConnectionTimeouts(saturate(connection_timeout, limit),
                              saturate(send_timeout, limit),
                              saturate(receive_timeout, limit),
                              saturate(tcp_keep_alive_timeout, limit),
                              saturate(http_keep_alive_timeout, limit),
                              saturate(secure_connection_timeout, limit),
                              saturate(hedged_connection_timeout, limit),
                              saturate(receive_data_timeout, limit),
                              saturate(handshake_timeout, limit));
}

/// Timeouts for the case when we have just single attempt to connect.
ConnectionTimeouts ConnectionTimeouts::getTCPTimeoutsWithoutFailover(const Settings & settings)
{
    return ConnectionTimeouts(settings.connect_timeout, settings.send_timeout, settings.receive_timeout, settings.tcp_keep_alive_timeout, settings.handshake_timeout_ms);
}

/// Timeouts for the case when we will try many addresses in a loop.
ConnectionTimeouts ConnectionTimeouts::getTCPTimeoutsWithFailover(const Settings & settings)
{
    return ConnectionTimeouts(
        settings.connect_timeout_with_failover_ms,
        settings.send_timeout,
        settings.receive_timeout,
        settings.tcp_keep_alive_timeout,
        0,
        settings.connect_timeout_with_failover_secure_ms,
        settings.hedged_connection_timeout_ms,
        settings.receive_data_timeout_ms,
        settings.handshake_timeout_ms);
}

ConnectionTimeouts ConnectionTimeouts::getHTTPTimeouts(const Settings & settings, Poco::Timespan http_keep_alive_timeout)
{
    return ConnectionTimeouts(
        settings.http_connection_timeout,
        settings.http_send_timeout,
        settings.http_receive_timeout,
        settings.tcp_keep_alive_timeout,
        http_keep_alive_timeout,
        settings.http_receive_timeout);
}

}