From c8b250bc216b190e913fab27d599b40518d7e748 Mon Sep 17 00:00:00 2001
From: Adam Soltys <asoltys@gmail.com>
Date: Tue, 24 Jan 2023 09:53:40 -0800
Subject: lnurl pay

---
 src/routes/(app)/ln/[lnurl]/+page.server.js | 27 +++++++++++++++++----------
 src/routes/(app)/ln/[lnurl]/+page.svelte    | 15 +++++++++++++--
 2 files changed, 30 insertions(+), 12 deletions(-)

(limited to 'src/routes/(app)/ln')

diff --git a/src/routes/(app)/ln/[lnurl]/+page.server.js b/src/routes/(app)/ln/[lnurl]/+page.server.js
index bb731e84..ded2e58c 100644
--- a/src/routes/(app)/ln/[lnurl]/+page.server.js
+++ b/src/routes/(app)/ln/[lnurl]/+page.server.js
@@ -1,23 +1,30 @@
 import { auth, get, post } from '$lib/utils';
-import { error, redirect } from '@sveltejs/kit';
+import { error, invalid, redirect } from '@sveltejs/kit';
 
 export async function load({ params }) {
 	try {
 		let { lnurl } = params;
-		lnurl = await get(`/decode?text=${lnurl}`);
-		if (lnurl.tag !== 'payRequest') throw error(500, 'We can only handle lnurl pay requests');
-
-		return lnurl;
+		let data = await get(`/decode?text=${lnurl}`);
+		if (data.tag !== 'payRequest') throw error(500, 'We can only handle lnurl pay requests');
+		return data;
 	} catch (e) {
 		throw error(500, e.message);
 	}
 }
 
 export const actions = {
-	default: async ({ cookies, request }) => {
-		let { callback, ...form } = Object.fromEntries(await request.formData());
-		form.params = { callback };
-		await post('/pay', form, auth(cookies));
-		throw redirect(307, '/sent');
+	default: async ({ cookies, fetch, request }) => {
+		let error;
+
+		let { callback, amount, minSendable, maxSendable } = Object.fromEntries(
+			await request.formData()
+		);
+
+		if (amount < minSendable) error = `Amount must be at least ${minSendable} sats`;
+		if (amount > maxSendable) error = `Amount must be at most ${maxSendable} sats`;
+		if (error) return invalid(400, { error });
+
+		let { pr } = await fetch(`${callback}?amount=${amount}`).then((r) => r.json());
+		throw redirect(307, `/send/lightning/${pr}`);
 	}
 };
diff --git a/src/routes/(app)/ln/[lnurl]/+page.svelte b/src/routes/(app)/ln/[lnurl]/+page.svelte
index 15edeaef..297ac35a 100644
--- a/src/routes/(app)/ln/[lnurl]/+page.svelte
+++ b/src/routes/(app)/ln/[lnurl]/+page.svelte
@@ -4,10 +4,12 @@
 	import { Numpad, Spinner } from '$comp';
 	import { pin } from '$lib/store';
 
-	export let data;
+	export let data, form;
 	let { currency } = data.user;
 	let { minSendable, maxSendable, callback, metadata } = data;
-	let amount, loading;
+
+	let amount = minSendable,
+		loading;
 	let submit = () => (loading = true);
 </script>
 
@@ -24,10 +26,19 @@
 			</div>
 		{/each}
 	</div>
+
+	{#if form?.error}
+		<div class="text-red-600 text-center mb-5">
+			{form.error}
+		</div>
+	{/if}
+
 	<Numpad bind:amount {currency} />
 
 	<form method="POST" use:enhance on:submit={submit}>
 		<input name="amount" value={amount} type="hidden" />
+		<input name="minSendable" value={minSendable} type="hidden" />
+		<input name="maxSendable" value={maxSendable} type="hidden" />
 		<input name="callback" value={callback} type="hidden" />
 		<input name="pin" value={$pin} type="hidden" />
 
-- 
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