use chrono::{DateTime, Utc};
use serde::{Deserialize, Serialize};

use crate::model::discovery::DiscoveryItem;

use super::InstanceAuthenticated;

#[derive(Clone, Hash, PartialEq, Eq, Debug, Serialize, Deserialize)]
pub struct DiscoveryMessage {
    pub message: InstanceAuthenticated<DiscoveryMessageKind>,
}

#[derive(Clone, Hash, PartialEq, Eq, Debug, Serialize, Deserialize)]
pub enum DiscoveryMessageKind {
    Offer(DiscoveryOffer),
    Request(DiscoveryRequest),
    Discoveries(Discoveries),
}

#[derive(Clone, Hash, PartialEq, Eq, Debug, Serialize, Deserialize)]
pub struct DiscoveryOffer {
    pub earliest: DateTime<Utc>,
    pub hashes: Vec<u128>,
}

#[derive(Clone, Hash, PartialEq, Eq, Debug, Serialize, Deserialize)]
pub struct DiscoveryRequest {
    pub since: DateTime<Utc>,
    pub hashes: Vec<u128>,
}

#[derive(Clone, Hash, PartialEq, Eq, Debug, Serialize, Deserialize)]
pub struct Discoveries {
    pub discoveries: Vec<DiscoveryItem>,
}