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use crate::{
client::{PreparedCommand, prepare_command},
resp::cmd,
};
use serde::Serialize;
/// 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<'a>: Sized {
/// 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(
self,
key: impl Serialize,
elements: impl Serialize,
) -> PreparedCommand<'a, Self, bool> {
prepare_command(self, cmd("PFADD").key(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(self, keys: impl Serialize) -> PreparedCommand<'a, Self, usize> {
prepare_command(self, cmd("PFCOUNT").key(keys))
}
/// Merge N different HyperLogLogs into a single one.
///
/// # See Also
/// [<https://redis.io/commands/pfmerge/>](https://redis.io/commands/pfmerge/)
fn pfmerge(
self,
dest_key: impl Serialize,
source_keys: impl Serialize,
) -> PreparedCommand<'a, Self, ()> {
prepare_command(self, cmd("PFMERGE").key(dest_key).key(source_keys))
}
}