34 lines
987 B
Rust
34 lines
987 B
Rust
use nostr_sdk::prelude::*;
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/// Announcement
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#[derive(Debug, Clone, PartialEq, Eq, PartialOrd, Ord, Hash)]
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pub struct Announcement {
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/// The public key of the device that created this announcement.
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public_key: PublicKey,
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}
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impl Announcement {
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/// Parse an announcement from an event, returning `None` when the `n`
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/// tag is missing or malformed so callers never mistake the author's
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/// identity key for an encryption key.
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pub fn from_event(event: &Event) -> Option<Self> {
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let public_key = event
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.tags
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.iter()
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.find(|tag| tag.kind() == "n")
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.and_then(|tag| tag.content())
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.and_then(|c| PublicKey::parse(c).ok())?;
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Some(Self { public_key })
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}
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pub fn new(public_key: PublicKey) -> Self {
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Self { public_key }
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}
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/// Returns the public key of the device that created this announcement.
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pub fn public_key(&self) -> PublicKey {
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self.public_key
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}
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}
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