use alloc::vec::Vec;
use crate::crypto::PublicKey;
use serde::{Serialize, Deserialize};

/// A tunnel that is used for communication
#[derive(Serialize, Clone, Deserialize)]
pub struct Tunnel {
    /// Tunnel's id.
    /// By the way, this id is `None` until the tunnel is validated in the backward movement
    pub id: Option<u64>,
    /// Ids, each of them is just for local storage on each node until a final global id is created
    pub local_ids: Vec<u64>,
    /// Ids of peers (in transport) by which we can send a message - one for backward direction, another for forward
    pub peer_ids: (u64, u64),
    /// Time at which this tunnel should be destroyed (UNIX epoch)
    pub ttd: u64,
    /// Public keys of nodes in the tunnel
    pub nodes_in_tunnel: Option<Vec<PublicKey>>,
    /// Is this tunnel used for multicast?
    pub is_multicast: bool,
    /// If we created this tunnel, then this is the node that it's used to communicate with
    pub target_node: Option<PublicKey>,
}

/// Tunnel, but only the fields that are ok to share
#[derive(Serialize, Clone, Deserialize)]
pub struct TunnelPublic {
    /// Tunnel's id
    id: Option<u64>,
    /// Ids, each of them is just for local storage on each node until a final global id is created
    local_ids: Vec<u64>,
    /// Time at which this tunnel should be destroyed (UNIX epoch)
    ttd: u64,
    /// Public keys of nodes in the tunnel
    nodes_in_tunnel: Option<Vec<PublicKey>>,
}