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

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

use super::MessageTarget;

#[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>,
}

impl MessageTarget for DiscoveryRequest {
    fn target(&self) -> Option<crate::model::instance::Instance> {
        None
    }
}

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