refactor: remove electron-related code

src/providers/NostrProvider/nsec.signer.ts

@@ -0,0 +1,35 @@
+import { ISigner, TDraftEvent } from '@/types'
+import { finalizeEvent, getPublicKey as nGetPublicKey, nip19 } from 'nostr-tools'
+
+export class NsecSigner implements ISigner {
+  private privkey: Uint8Array | null = null
+  private pubkey: string | null = null
+
+  login(nsec: string) {
+    const { type, data } = nip19.decode(nsec)
+    if (type !== 'nsec') {
+      throw new Error('invalid nsec')
+    }
+
+    this.privkey = data
+    this.pubkey = nGetPublicKey(data)
+    return this.pubkey
+  }
+
+  async getPublicKey() {
+    return this.pubkey
+  }
+
+  async signEvent(draftEvent: TDraftEvent) {
+    if (!this.privkey) {
+      return null
+    }
+
+    try {
+      return finalizeEvent(draftEvent, this.privkey)
+    } catch (error) {
+      console.error(error)
+      return null
+    }
+  }
+}