update nostr sdk

shared/src/commonMain/kotlin/su/reya/coop/Signer.kt

@@ -0,0 +1,55 @@
+package su.reya.coop
+
+import kotlinx.coroutines.sync.Mutex
+import kotlinx.coroutines.sync.withLock
+import rust.nostr.sdk.AsyncNostrSigner
+import rust.nostr.sdk.Event
+import rust.nostr.sdk.PublicKey
+import rust.nostr.sdk.UnsignedEvent
+
+class UniversalSigner(initialSigner: AsyncNostrSigner) : AsyncNostrSigner {
+    private val mutex = Mutex()
+    private var signer: AsyncNostrSigner = initialSigner
+
+    var currentUser: PublicKey? = null
+        private set
+
+    /**
+     * Get the current signer.
+     */
+    suspend fun get(): AsyncNostrSigner = mutex.withLock {
+        signer
+    }
+
+    /**
+     * Switch to a new signer.
+     */
+    suspend fun switch(newSigner: AsyncNostrSigner) = mutex.withLock {
+        signer = newSigner
+        currentUser = newSigner.getPublicKeyAsync()
+    }
+
+    override suspend fun getPublicKeyAsync(): PublicKey? {
+        return get().getPublicKeyAsync()
+    }
+
+    override suspend fun signEventAsync(unsignedEvent: UnsignedEvent): Event? {
+        return get().signEventAsync(unsignedEvent)
+    }
+
+    override suspend fun nip04EncryptAsync(publicKey: PublicKey, content: String): String {
+        return get().nip04EncryptAsync(publicKey, content)
+    }
+
+    override suspend fun nip04DecryptAsync(publicKey: PublicKey, encryptedContent: String): String {
+        return get().nip04DecryptAsync(publicKey, encryptedContent)
+    }
+
+    override suspend fun nip44EncryptAsync(publicKey: PublicKey, content: String): String {
+        return get().nip44EncryptAsync(publicKey, content)
+    }
+
+    override suspend fun nip44DecryptAsync(publicKey: PublicKey, payload: String): String {
+        return get().nip44DecryptAsync(publicKey, payload)
+    }
+}