From a21fa2c22b4993e0829ae8c4622b418479a5905c Mon Sep 17 00:00:00 2001
From: BlowaterNostr <blowater.nostr@proton.me>
Date: Wed, 14 Jun 2023 06:44:38 +0000
Subject: [PATCH] add PrivateKey.FromString method

---
 key.ts        | 8 ++++++++
 nip19.test.ts | 8 ++++++++
 2 files changed, 16 insertions(+)

diff --git a/key.ts b/key.ts
index 4f6a7a9..04a38ce 100644
--- a/key.ts
+++ b/key.ts
@@ -32,6 +32,14 @@ export class PrivateKey {
         return new Error(`${key} is not valid`);
     }
 
+    static FromString(raw: string) {
+        const key = PrivateKey.FromBech32(raw);
+        if (key instanceof Error) {
+            return PrivateKey.FromHex(raw);
+        }
+        return key;
+    }
+
     public readonly bech32: string;
     public readonly hex: string;
 
diff --git a/nip19.test.ts b/nip19.test.ts
index ef13422..28b7784 100644
--- a/nip19.test.ts
+++ b/nip19.test.ts
@@ -56,4 +56,12 @@ Deno.test("nip19 private key", async (t) => {
             `Invalid checksum in nsec1alwevw7n7xxapp4g7c2v3l5qr7zkmxjrhlwqteh6rkh2527gm3qqgj3jh: expected "29r5am"`,
         );
     });
+
+    await t.step("private key from string", () => {
+        const pri = PrivateKey.Generate();
+        const pri_1 = PrivateKey.FromString(pri.bech32) as PrivateKey;
+        const pri_2 = PrivateKey.FromString(pri.hex) as PrivateKey;
+        assertEquals(pri_1.hex, pri_2.hex);
+        assertEquals(pri_1.bech32, pri_2.bech32);
+    });
 });