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use crate::profile::Profile;
use crate::EntityError;
use core::convert::TryFrom;
use core::fmt::{Display, Formatter};
use ockam_core::compat::string::String;
use ockam_core::hex::encode;
use ockam_core::vault::{Hasher, KeyId};
use ockam_core::{Error, Result};
use serde::{Deserialize, Serialize};
#[derive(Clone, Debug, Eq, PartialEq, Hash, Serialize, Deserialize, Default)]
pub struct EntityIdentifier(KeyId);
pub type ProfileIdentifier = EntityIdentifier;
impl EntityIdentifier {
pub const PREFIX: &'static str = "P";
pub fn from_key_id(key_id: KeyId) -> Self {
Self { 0: key_id }
}
pub fn key_id(&self) -> &KeyId {
&self.0
}
}
impl Display for EntityIdentifier {
fn fmt(&self, f: &mut Formatter<'_>) -> core::fmt::Result {
let str: String = self.clone().into();
write!(f, "{}", &str)
}
}
impl From<EntityIdentifier> for String {
fn from(id: EntityIdentifier) -> Self {
format!("{}{}", EntityIdentifier::PREFIX, &id.0)
}
}
impl TryFrom<&str> for EntityIdentifier {
type Error = Error;
fn try_from(value: &str) -> Result<Self> {
if let Some(str) = value.strip_prefix(Self::PREFIX) {
Ok(Self::from_key_id(str.into()))
} else {
Err(EntityError::InvalidProfileId.into())
}
}
}
impl TryFrom<String> for EntityIdentifier {
type Error = Error;
fn try_from(value: String) -> Result<Self> {
Self::try_from(value.as_str())
}
}
#[derive(Serialize, Deserialize, Debug, Clone, Eq, PartialEq, Hash)]
pub struct EventIdentifier([u8; 32]);
impl AsRef<[u8]> for EventIdentifier {
fn as_ref(&self) -> &[u8] {
&self.0
}
}
impl EventIdentifier {
pub async fn initial(hasher: &mut (impl Hasher + Sync)) -> Self {
let h = match hasher.sha256(Profile::NO_EVENT).await {
Ok(hash) => hash,
Err(_) => panic!("failed to hash initial event"),
};
EventIdentifier::from_hash(h)
}
pub fn from_hash(hash: [u8; 32]) -> Self {
Self { 0: hash }
}
pub fn to_string_representation(&self) -> String {
format!("E_ID.{}", encode(&self.0))
}
}
#[cfg(test)]
mod test {
use super::*;
use core::convert::TryInto;
use rand::{thread_rng, RngCore};
impl EntityIdentifier {
pub fn random() -> EntityIdentifier {
EntityIdentifier(format!("{:x}", thread_rng().next_u64()))
}
}
#[test]
fn test_new() {
let _identifier = EntityIdentifier::from_key_id("test".to_string());
}
#[test]
fn test_into() {
let id1 = EntityIdentifier::random();
let str: String = id1.clone().into();
assert!(str.starts_with('P'));
let id2: EntityIdentifier = str.try_into().unwrap();
assert_eq!(id1, id2);
}
}