Switch away from nonboard for nostr login

frontend/src/lib/nostr.ts

@@ -1,9 +1,52 @@
 import { EventStore } from "applesauce-core"
 import { RelayPool } from "applesauce-relay"
 import { AccountManager } from "applesauce-accounts"
+import type { IAccount, SerializedAccount } from "applesauce-accounts"
+import { registerCommonAccountTypes } from "applesauce-accounts/accounts"
+import { NostrConnectSigner } from "applesauce-signers"
 
 export const API_URL = import.meta.env.VITE_API_URL
 
 export const eventStore = new EventStore()
 export const pool = new RelayPool()
 export const accounts = new AccountManager()
+
+const ACCOUNTS_STORAGE_KEY = "caravel.accounts"
+const ACTIVE_ACCOUNT_STORAGE_KEY = "caravel.activeAccount"
+
+registerCommonAccountTypes(accounts)
+NostrConnectSigner.subscriptionMethod = pool.subscription.bind(pool)
+NostrConnectSigner.publishMethod = pool.publish.bind(pool)
+
+export function restoreAccounts() {
+  const raw = localStorage.getItem(ACCOUNTS_STORAGE_KEY)
+  if (raw) {
+    try {
+      const saved = JSON.parse(raw) as SerializedAccount[]
+      accounts.fromJSON(saved, true)
+    } catch (error) {
+      console.warn("Failed to restore accounts", error)
+    }
+  }
+
+  const activeId = localStorage.getItem(ACTIVE_ACCOUNT_STORAGE_KEY)
+  if (activeId && accounts.getAccount(activeId)) {
+    accounts.setActive(activeId)
+  }
+}
+
+export function activateAccount(account: IAccount) {
+  accounts.addAccount(account)
+  accounts.setActive(account)
+  persistAccounts()
+}
+
+export function persistAccounts() {
+  localStorage.setItem(ACCOUNTS_STORAGE_KEY, JSON.stringify(accounts.toJSON(true)))
+  const active = accounts.getActive()
+  if (active) {
+    localStorage.setItem(ACTIVE_ACCOUNT_STORAGE_KEY, active.id)
+  } else {
+    localStorage.removeItem(ACTIVE_ACCOUNT_STORAGE_KEY)
+  }
+}