feat: make global state simpler

crates/common/src/utils.rs

@@ -1,10 +1,11 @@
-use crate::constants::NIP96_SERVER;
+use crate::constants::{ALL_MESSAGES_SUB_ID, NEW_MESSAGE_SUB_ID, NIP96_SERVER};
 use itertools::Itertools;
 use nostr_sdk::prelude::*;
 use rnglib::{Language, RNG};
 use std::{
     collections::HashSet,
     hash::{DefaultHasher, Hash, Hasher},
+    time::Duration,
 };
 
 pub async fn signer_public_key(client: &Client) -> anyhow::Result<PublicKey, anyhow::Error> {
@@ -14,6 +15,47 @@ pub async fn signer_public_key(client: &Client) -> anyhow::Result<PublicKey, any
     Ok(public_key)
 }
 
+pub async fn preload(client: &Client, public_key: PublicKey) -> anyhow::Result<(), anyhow::Error> {
+    let subscription = Filter::new()
+        .kind(Kind::ContactList)
+        .author(public_key)
+        .limit(1);
+
+    // Get contact list
+    _ = client.sync(subscription, &SyncOptions::default()).await;
+
+    let all_messages_sub_id = SubscriptionId::new(ALL_MESSAGES_SUB_ID);
+    let new_message_sub_id = SubscriptionId::new(NEW_MESSAGE_SUB_ID);
+
+    // Create a filter for getting all gift wrapped events send to current user
+    let all_messages = Filter::new().kind(Kind::GiftWrap).pubkey(public_key);
+
+    // Create a filter for getting new message
+    let new_message = Filter::new()
+        .kind(Kind::GiftWrap)
+        .pubkey(public_key)
+        .limit(0);
+
+    // Subscribe for all messages
+    _ = client
+        .subscribe_with_id(
+            all_messages_sub_id,
+            all_messages,
+            Some(
+                SubscribeAutoCloseOptions::default()
+                    .exit_policy(ReqExitPolicy::WaitDurationAfterEOSE(Duration::from_secs(3))),
+            ),
+        )
+        .await;
+
+    // Subscribe for new message
+    _ = client
+        .subscribe_with_id(new_message_sub_id, new_message, None)
+        .await;
+
+    Ok(())
+}
+
 pub async fn nip96_upload(client: &Client, file: Vec<u8>) -> anyhow::Result<Url, anyhow::Error> {
     let signer = client.signer().await?;
     let server_url = Url::parse(NIP96_SERVER)?;