use std::time::Duration;
use std::u64;

pub const REKEY_AFTER_MESSAGES: u64 = 1 << 60;
pub const REJECT_AFTER_MESSAGES: u64 = u64::MAX - (1 << 4);

pub const REKEY_AFTER_TIME: Duration = Duration::from_secs(120);
pub const REJECT_AFTER_TIME: Duration = Duration::from_secs(180);
pub const REKEY_ATTEMPT_TIME: Duration = Duration::from_secs(90);
pub const REKEY_TIMEOUT: Duration = Duration::from_secs(5);
pub const KEEPALIVE_TIMEOUT: Duration = Duration::from_secs(10);

pub const MAX_TIMER_HANDSHAKES: usize = 18;

pub const TIMER_MAX_DURATION: Duration = Duration::from_secs(200);
pub const TIMERS_TICK: Duration = Duration::from_millis(100);
pub const TIMERS_SLOTS: usize = (TIMER_MAX_DURATION.as_micros() / TIMERS_TICK.as_micros()) as usize;
pub const TIMERS_CAPACITY: usize = 1024;

pub const MESSAGE_PADDING_MULTIPLE: usize = 16;

/* A long duration (compared to the WireGuard time constants),
 * used in places to avoid Option<Instant> by instead using a long "expired" Instant:
 * (Instant::now() - TIME_HORIZON)
 */
pub const TIME_HORIZON: Duration = Duration::from_secs(3600 * 24);