enostr

rust nostr lib that works on the web and natively
git clone git://jb55.com/enostr
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event.rs (2249B)

      1 use crate::{Error, Pubkey, Result};
      2 use serde_derive::{Deserialize, Serialize};
      3 use std::hash::{Hash, Hasher};
      4 
      5 /// Event is the struct used to represent a Nostr event
      6 #[derive(Serialize, Deserialize, Debug, Clone)]
      7 pub struct Event {
      8     /// 32-bytes sha256 of the the serialized event data
      9     pub id: EventId,
     10     /// 32-bytes hex-encoded public key of the event creator
     11     #[serde(rename = "pubkey")]
     12     pub pubkey: Pubkey,
     13     /// unix timestamp in seconds
     14     pub created_at: u64,
     15     /// integer
     16     /// 0: NostrEvent
     17     pub kind: u64,
     18     /// Tags
     19     pub tags: Vec<Vec<String>>,
     20     /// arbitrary string
     21     pub content: String,
     22     /// 64-bytes signature of the sha256 hash of the serialized event data, which is the same as the "id" field
     23     pub sig: String,
     24 }
     25 
     26 // Implement Hash trait
     27 impl Hash for Event {
     28     fn hash<H: Hasher>(&self, state: &mut H) {
     29         self.id.0.hash(state);
     30     }
     31 }
     32 
     33 impl PartialEq for Event {
     34     fn eq(&self, other: &Self) -> bool {
     35         self.id == other.id
     36     }
     37 }
     38 
     39 impl Eq for Event {}
     40 
     41 impl Event {
     42     pub fn from_json(s: &str) -> Result<Self> {
     43         serde_json::from_str(s).map_err(Into::into)
     44     }
     45 
     46     pub fn verify(&self) -> Result<Self> {
     47         return Err(Error::InvalidSignature);
     48     }
     49 
     50     /// This is just for serde sanity checking
     51     #[allow(dead_code)]
     52     pub(crate) fn new_dummy(
     53         id: &str,
     54         pubkey: &str,
     55         created_at: u64,
     56         kind: u64,
     57         tags: Vec<Vec<String>>,
     58         content: &str,
     59         sig: &str,
     60     ) -> Result<Self> {
     61         let event = Event {
     62             id: id.to_string().into(),
     63             pubkey: pubkey.to_string().into(),
     64             created_at,
     65             kind,
     66             tags,
     67             content: content.to_string(),
     68             sig: sig.to_string(),
     69         };
     70 
     71         event.verify()
     72     }
     73 }
     74 
     75 impl std::str::FromStr for Event {
     76     type Err = Error;
     77 
     78     fn from_str(s: &str) -> Result<Self> {
     79         Event::from_json(s)
     80     }
     81 }
     82 
     83 #[derive(Serialize, Deserialize, Debug, Eq, PartialEq, Clone, Hash)]
     84 pub struct EventId(String);
     85 
     86 impl From<String> for EventId {
     87     fn from(s: String) -> Self {
     88         EventId(s)
     89     }
     90 }
     91 
     92 impl From<EventId> for String {
     93     fn from(evid: EventId) -> Self {
     94         evid.0
     95     }
     96 }