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use crate::{
prepare_command,
resp::{cmd, CommandArg, SingleArgOrCollection},
PreparedCommand,
};
/// A group of Redis commands related to [`HyperLogLog`](https://redis.io/docs/data-types/hyperloglogs/)
///
/// # See Also
/// [Redis Hash Commands](https://redis.io/commands/?group=hyperloglog)
pub trait HyperLogLogCommands {
/// Adds the specified elements to the specified HyperLogLog.
///
/// # Return
/// * `true` if at least 1 HyperLogLog inFternal register was altered.
/// * `false` otherwise.
///
/// # See Also
/// [<https://redis.io/commands/pfadd/>](https://redis.io/commands/pfadd/)
fn pfadd<K, E, EE>(&mut self, key: K, elements: EE) -> PreparedCommand<Self, bool>
where
Self: Sized,
K: Into<CommandArg>,
E: Into<CommandArg>,
EE: SingleArgOrCollection<E>,
{
prepare_command(self, cmd("PFADD").arg(key).arg(elements))
}
/// Return the approximated cardinality of the set(s)
/// observed by the HyperLogLog at key(s).
///
/// # Return
/// The approximated number of unique elements observed via PFADD.
///
/// # See Also
/// [<https://redis.io/commands/pfcount/>](https://redis.io/commands/pfcount/)
fn pfcount<K, KK>(&mut self, keys: KK) -> PreparedCommand<Self, usize>
where
Self: Sized,
K: Into<CommandArg>,
KK: SingleArgOrCollection<K>,
{
prepare_command(self, cmd("PFCOUNT").arg(keys))
}
/// Merge N different HyperLogLogs into a single one.
///
/// # See Also
/// [<https://redis.io/commands/pfmerge/>](https://redis.io/commands/pfmerge/)
fn pfmerge<D, S, SS>(&mut self, dest_key: D, source_keys: SS) -> PreparedCommand<Self, ()>
where
Self: Sized,
D: Into<CommandArg>,
S: Into<CommandArg>,
SS: SingleArgOrCollection<S>,
{
prepare_command(self, cmd("PFMERGE").arg(dest_key).arg(source_keys))
}
}