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use chrono::Utc;
use std::collections::HashMap;
use std::default::Default;
use client::Context;
use model::{ChannelId, GuildId, UserId};
#[cfg(feature = "cache")]
type Check = Fn(&mut Context, Option<GuildId>, ChannelId, UserId) -> bool + 'static;
#[cfg(not(feature = "cache"))]
type Check = Fn(&mut Context, ChannelId, UserId) -> bool + 'static;
pub(crate) struct Ratelimit {
pub delay: i64,
pub limit: Option<(i64, i32)>,
}
#[derive(Default)]
pub(crate) struct MemberRatelimit {
pub last_time: i64,
pub set_time: i64,
pub tickets: i32,
}
pub(crate) struct Bucket {
pub ratelimit: Ratelimit,
pub users: HashMap<u64, MemberRatelimit>,
pub check: Option<Box<Check>>,
}
impl Bucket {
pub fn take(&mut self, user_id: u64) -> i64 {
let time = Utc::now().timestamp();
let user = self.users
.entry(user_id)
.or_insert_with(MemberRatelimit::default);
if let Some((timespan, limit)) = self.ratelimit.limit {
if (user.tickets + 1) > limit {
if time < (user.set_time + timespan) {
return (user.set_time + timespan) - time;
} else {
user.tickets = 0;
user.set_time = time;
}
}
}
if time < user.last_time + self.ratelimit.delay {
(user.last_time + self.ratelimit.delay) - time
} else {
user.tickets += 1;
user.last_time = time;
0
}
}
}
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