From 6ec41bac23d941b81b93883d00602c8ccec9ff35 Mon Sep 17 00:00:00 2001
From: Adam Soltys <adam@coinos.io>
Date: Sun, 29 Dec 2024 11:59:02 -0800
Subject: nostr login

---
 src/routes/(app)/[username]/(profile)/+page.svelte |  9 +++
 src/routes/(static)/login/+page.server.ts          | 44 ++++++++++++-
 src/routes/(static)/login/+page.svelte             | 73 +++++++++++++++++++---
 3 files changed, 114 insertions(+), 12 deletions(-)

(limited to 'src')

diff --git a/src/routes/(app)/[username]/(profile)/+page.svelte b/src/routes/(app)/[username]/(profile)/+page.svelte
index 05273bc5..53a994ad 100644
--- a/src/routes/(app)/[username]/(profile)/+page.svelte
+++ b/src/routes/(app)/[username]/(profile)/+page.svelte
@@ -1,4 +1,6 @@
 <script>
+  import { browser } from "$app/environment";
+  import { onMount } from "svelte";
   import { scale } from "svelte/transition";
   import { btc, f, sat } from "$lib/utils";
   import Account from "$comp/Account.svelte";
@@ -23,6 +25,13 @@
   };
 
   if (user) user.savings = 0;
+
+  let pk = $state();;
+  onMount(async () => {
+    if (browser) {
+      pk = await window.nostr.getPublicKey();
+    }
+  });
 </script>
 
 <div class="space-y-2">
diff --git a/src/routes/(static)/login/+page.server.ts b/src/routes/(static)/login/+page.server.ts
index 6e268c92..740f02d8 100644
--- a/src/routes/(static)/login/+page.server.ts
+++ b/src/routes/(static)/login/+page.server.ts
@@ -1,13 +1,15 @@
-import { fd, login } from "$lib/utils";
+import { fd, get, login } from "$lib/utils";
 import { fail, redirect } from "@sveltejs/kit";
 
 export const load = async ({ parent }) => {
 	const { user } = await parent();
 	if (user?.pubkey) redirect(307, `/${user.username}`);
+	const { id } = await get("/challenge");
+	return { id };
 };
 
 export const actions = {
-	default: async ({ cookies, request }) => {
+	login: async ({ cookies, request }) => {
 		const form = await fd(request);
 		let { username, password, token, loginRedirect } = form;
 		const user = { username, password, token };
@@ -23,4 +25,42 @@ export const actions = {
 
 		redirect(307, loginRedirect || `/${user.username}`);
 	},
+
+	nostr: async ({ cookies, fetch, request }) => {
+		const form = await fd(request);
+		let { id, event, loginRedirect } = form;
+		if (loginRedirect === "null") loginRedirect = undefined;
+		event = JSON.parse(event);
+
+		const maxAge = 380 * 24 * 60 * 60;
+
+		const res = await fetch("/api/nostrLogin", {
+			method: "POST",
+			body: JSON.stringify({ id, event }),
+			headers: {
+				"content-type": "application/json",
+				accept: "application/json",
+				"cf-connecting-ip": request.headers.get("cf-connecting-ip"),
+			},
+		});
+
+		if (res.status === 401) {
+			const text = await res.text();
+			if (text.startsWith("2fa")) throw new Error("2fa");
+		}
+
+		const { user, token } = await res.json();
+		if (!token) throw new Error("Login failed");
+		const { username, language } = user;
+
+		const expires = new Date();
+		expires.setSeconds(expires.getSeconds() + maxAge);
+
+		const opts = { path: "/", expires };
+		if (language) cookies.set("lang", language, opts);
+		cookies.set("username", username, opts);
+		cookies.set("token", token, opts);
+
+		redirect(307, loginRedirect || `/${username}`);
+	},
 };
diff --git a/src/routes/(static)/login/+page.svelte b/src/routes/(static)/login/+page.svelte
index 5caf48fb..b49ba036 100644
--- a/src/routes/(static)/login/+page.svelte
+++ b/src/routes/(static)/login/+page.svelte
@@ -1,5 +1,5 @@
 <script>
-  import { run, preventDefault } from "svelte/legacy";
+  import { browser } from "$app/environment";
   import handler from "$lib/handler";
 
   import { onMount } from "svelte";
@@ -16,7 +16,9 @@
   import { generate } from "$lib/nostr";
   import { invalidateAll } from "$app/navigation";
 
+  let nostr = $state();
   onMount(() => {
+    if (browser && window.nostr) nostr = true;
     $pin = undefined;
     localStorage.clear();
     sessionStorage.clear();
@@ -25,11 +27,11 @@
     if (lang) document.cookie = `lang=${lang} ;`;
   });
 
-  let { form } = $props();
+  let { data, form } = $props();
+  let { id } = $derived(data);
 
   let token = $state("");
   let code = [];
-  let redirect;
 
   $password = undefined;
 
@@ -48,6 +50,7 @@
   let revealPassword = $state(false);
 
   async function handleSubmit(e) {
+    e.preventDefault();
     let data = new FormData(this);
     let user = Object.fromEntries(data);
 
@@ -55,7 +58,7 @@
       data.set(k, user[k]);
     }
 
-    const response = await fetch("/login", {
+    const response = await fetch("?/login", {
       method: "POST",
       body: data,
     });
@@ -75,6 +78,47 @@
         btn.click();
       });
   });
+
+  let nostrLogin = async () => {
+    let pubkey = await window.nostr.getPublicKey();
+    const formData = new FormData();
+
+    let ev = {
+      kind: 1,
+      pubkey,
+      created_at: Date.now(),
+      content: id,
+      tags: [],
+    };
+
+    try {
+      let signedEvent = await window.nostr.signEvent(ev);
+
+      formData.append("loginRedirect", redirect);
+      formData.append("token", token);
+      formData.append("event", JSON.stringify(signedEvent));
+      formData.append("id", id);
+
+      let response = await fetch("?/nostr", {
+        method: "POST",
+        body: formData,
+      });
+
+      const result = deserialize(await response.text());
+
+      if (result.type === "success") {
+        await invalidateAll();
+      }
+
+      applyAction(result);
+    } catch (e) {
+      fail(e.message);
+    }
+  };
+
+  let redirect = $derived(
+    $loginRedirect || $page.url.searchParams.get("redirect"),
+  );
 </script>
 
 <div
@@ -88,12 +132,14 @@
     </div>
   {/if}
 
-  <form use:enhance class="space-y-5" onsubmit={handleSubmit} method="POST">
-    <input
-      type="hidden"
-      name="loginRedirect"
-      value={$loginRedirect || $page.url.searchParams.get("redirect")}
-    />
+  <form
+    use:enhance
+    class="space-y-5"
+    onsubmit={handleSubmit}
+    method="POST"
+    action="?/login"
+  >
+    <input type="hidden" name="loginRedirect" value={redirect} />
     <input type="hidden" name="token" value={token} />
 
     <input
@@ -118,6 +164,13 @@
       {$t("login.signIn")}
     </button>
 
+    {#if nostr}
+      <button type="button" class="btn" onclick={nostrLogin}>
+        <img src="/images/nostr.png" class="w-8" />
+        <div class="my-auto">{$t("user.settings.nostr")}</div>
+      </button>
+    {/if}
+
     <p class="text-secondary text-center font-medium">
       {$t("login.noAccount")}
       <a
-- 
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