nostrs: Add text-note dislike command

nostrs/src/handler/text_note.rs

@@ -1,9 +1,11 @@
 mod create;
 mod delete;
+mod dislike;
 mod like;
 mod list;
 
 pub use self::create::handle as create;
 pub use self::delete::handle as delete;
+pub use self::dislike::handle as dislike;
 pub use self::like::handle as like;
 pub use self::list::handle as list;

nostrs/src/handler/text_note/dislike.rs

@@ -0,0 +1,24 @@
+use std::time::Duration;
+
+use anyhow::bail;
+use nostr_sdk::prelude::{EventId, Kind, SubscriptionFilter};
+
+use crate::client::new_client;
+
+// NIP-25 <https://github.com/nostr-protocol/nips/blob/master/25.md>
+pub async fn handle(event_id: String) -> anyhow::Result<()> {
+    let event_id = EventId::from_hex(event_id)?;
+    let filter = SubscriptionFilter::new()
+        .kind(Kind::TextNote)
+        .id(event_id.to_hex())
+        .limit(1);
+    let timeout = Duration::from_secs(10);
+    let client = new_client().await?;
+    let events = client.get_events_of(vec![filter], Some(timeout)).await?;
+    if events.is_empty() {
+        bail!("event ({event_id:?}) not found");
+    }
+    let public_key = events[0].pubkey;
+    client.dislike(event_id, public_key).await?;
+    Ok(())
+}

nostrs/src/main.rs

@@ -75,6 +75,8 @@ enum TextNoteCommand {
     Create { content: String },
     /// Delete the note
     Delete { event_id: String },
+    /// Dislike the note
+    Dislike { event_id: String },
     /// Like the note
     Like { event_id: String },
     /// List notes
@@ -98,6 +100,7 @@ async fn main() -> anyhow::Result<()> {
         Resource::TextNote { command } => match command {
             TextNoteCommand::Create { content } => handler::text_note::create(content).await,
             TextNoteCommand::Delete { event_id } => handler::text_note::delete(event_id).await,
+            TextNoteCommand::Dislike { event_id } => handler::text_note::dislike(event_id).await,
             TextNoteCommand::Like { event_id } => handler::text_note::like(event_id).await,
             TextNoteCommand::List => handler::text_note::list().await,
         },