Add Nostr `bunker` slice to redux store

src/reducers/bunker.ts

@@ -0,0 +1,42 @@
+import { createSlice } from '@reduxjs/toolkit';
+
+/**
+ * Temporary authorization details to establish a bunker connection with an app.
+ * Will be upgraded to a `BunkerConnection` once the connection is established.
+ */
+interface BunkerAuthorization {
+  /**
+   * Authorization secret generated by the bunker.
+   * The app should return it to us in its `connect` call to establish a connection.
+   */
+  secret: string;
+  /** User pubkey. Events will be signed by this pubkey. */
+  pubkey: string;
+  /** Secret key for this connection. NIP-46 responses will be signed by this key. */
+  bunkerSeckey: Uint8Array;
+}
+
+/**
+ * A bunker connection maps an OAuth token from Mastodon API to a user pubkey and bunker keypair.
+ * The user pubkey is used to determine whether to use keys from localStorage or a browser extension,
+ * and the bunker keypair is used to sign and encrypt NIP-46 messages.
+ */
+interface BunkerConnection {
+  /** User pubkey. Events will be signed by this pubkey. */
+  pubkey: string;
+  /** Mastodon API access token associated with this connection. */
+  accessToken: string;
+  /** Pubkey of the app authorized to sign events with this connection. */
+  authorizedPubkey: string;
+  /** Secret key for this connection. NIP-46 responses will be signed by this key. */
+  bunkerSeckey: Uint8Array;
+}
+
+export default createSlice({
+  name: 'bunker',
+  initialState: {
+    authorizations: [] as BunkerAuthorization[],
+    connections: [] as BunkerConnection[],
+  },
+  reducers: {},
+});