update

crates/state/src/credentials.rs

@@ -1,10 +1,13 @@
 use anyhow::Result;
 #[cfg(target_arch = "wasm32")]
 use common::web_store;
-use gpui::{App, Task};
+use gpui::{App, AppContext as _, Task};
 
 use crate::USER_KEYRING;
 
+/// The storage key for the NIP-4e app keys
+const APP_KEYS_KEY: &str = "coop/nip4e/app-keys";
+
 /// Read the stored credential as `(username, secret)`
 #[allow(clippy::type_complexity)]
 pub(crate) fn read(cx: &App) -> Task<Result<Option<(String, Vec<u8>)>>> {
@@ -49,3 +52,54 @@ pub(crate) fn delete(cx: &App) -> Task<Result<()>> {
         Task::ready(web_store::remove(USER_KEYRING))
     }
 }
+
+/// Read named bytes from the platform keyring,
+/// falling back to browser storage on web where no keyring exists
+fn read_named(cx: &App, key: &str) -> Task<Result<Option<Vec<u8>>>> {
+    #[cfg(not(target_arch = "wasm32"))]
+    {
+        let key = key.to_owned();
+        let read = cx.read_credentials(&key);
+        cx.background_spawn(async move { Ok(read.await?.map(|(_, secret)| secret)) })
+    }
+
+    #[cfg(target_arch = "wasm32")]
+    {
+        let _ = cx;
+        let stored = web_store::get(key).map(|content| content.map(|s| s.into_bytes()));
+        Task::ready(stored)
+    }
+}
+
+/// Write named bytes to the platform keyring,
+/// falling back to browser storage on web where no keyring exists
+fn write_named(cx: &App, key: &str, secret: &[u8]) -> Task<Result<()>> {
+    #[cfg(not(target_arch = "wasm32"))]
+    {
+        let key = key.to_owned();
+        let secret = secret.to_vec();
+        let write = cx.write_credentials(&key, "", &secret);
+        cx.background_spawn(write)
+    }
+
+    #[cfg(target_arch = "wasm32")]
+    {
+        let _ = cx;
+        let content = match std::str::from_utf8(secret) {
+            Ok(content) => content,
+            Err(e) => return Task::ready(Err(anyhow::anyhow!("secret is not UTF-8: {e}"))),
+        };
+
+        Task::ready(web_store::set(key, content))
+    }
+}
+
+/// Load the NIP-4e app keys from storage, as raw secret bytes
+pub fn read_app_keys(cx: &App) -> Task<Result<Option<Vec<u8>>>> {
+    read_named(cx, APP_KEYS_KEY)
+}
+
+/// Persist the NIP-4e app keys, as raw secret bytes
+pub fn write_app_keys(cx: &App, secret: &[u8]) -> Task<Result<()>> {
+    write_named(cx, APP_KEYS_KEY, secret)
+}

crates/state/src/lib.rs

@@ -22,7 +22,7 @@ use nostr_sdk::prelude::*;
 
 mod blossom;
 mod constants;
-mod credentials;
+pub mod credentials;
 mod file;
 mod nip05;
 mod nip4e;