problem: not clear when someone makes a purchase

resolve https://github.com/nostrocket/hypergolic/issues/94

src/components/Pie.svelte

@@ -2,6 +2,7 @@
 	import { ndk } from '@/ndk.js';
 	import { Chart } from 'flowbite-svelte';
 	import { writable } from 'svelte/store';
+	import { Toaster } from '$lib/components/ui/sonner';
 	export let data: { pubkey: string; merits: number; sats: number }[];
 
 	let pubkeys = Array.from(data, (x) => x.pubkey);
@@ -130,4 +131,9 @@
 	// </Card>
 </script>
 
-<Chart options={$o} class="py-6" />
+<div class="relative h-full w-full">
+	<Chart options={$o} class="py-6" />
+	<div class="absolute left-1/2 top-0 z-20 w-[356px] -translate-x-1/2 transform">
+		<Toaster position="top-center" id="purchase" duration={10000} />
+	</div>
+</div>

src/components/PruchaseToast.svelte

@@ -0,0 +1,48 @@
+<script lang="ts">
+	import { Avatar, Name } from '@nostr-dev-kit/ndk-svelte-components';
+	import { ndk } from '@/ndk';
+	import { unixToRelativeTime } from '@/helpers';
+	import { fetchEvent } from '@/event_helpers/products';
+	import { Product, Rocket, type ZapPurchase } from '@/event_helpers/rockets';
+
+	export let zapPurchase: ZapPurchase;
+	export let rocket: Rocket;
+</script>
+
+<div class="flex flex-col gap-1">
+	{#if zapPurchase.ZapReceipt.content}
+		<div>{zapPurchase.ZapReceipt.content}</div>
+	{:else}
+		<!-- Sometimes ZapReceipt.content is empty -->
+		{#await fetchEvent(zapPurchase.ProductID, $ndk)}
+			<div>New purchase</div>
+		{:then product}
+			<div>{`Purchase of ${new Product(product).Name()} from ${rocket.Name()}.`}</div>
+		{/await}
+	{/if}
+	{#if zapPurchase.BuyerPubkey}
+		<div class="flex flex-nowrap gap-1">
+			<Avatar
+				ndk={$ndk}
+				pubkey={zapPurchase.BuyerPubkey}
+				class="h-10 w-10 flex-none rounded-full object-cover"
+			/>
+			<Name
+				ndk={$ndk}
+				pubkey={zapPurchase.BuyerPubkey}
+				class="hidden max-w-32 truncate p-2 md:inline-block"
+			/>
+		</div>
+	{/if}
+	{#if zapPurchase.Amount}
+		<div>
+			Amount: {(zapPurchase.Amount / 1000).toFixed(0)}
+			{(zapPurchase.Amount / 1000).toFixed(0) === '1' ? 'sat' : 'sats'}
+		</div>
+	{/if}
+	{#if zapPurchase.ZapReceipt.created_at}
+		<div>
+			{unixToRelativeTime(zapPurchase.ZapReceipt.created_at * 1000)}
+		</div>
+	{/if}
+</div>

src/components/RocketDashboard.svelte

@@ -2,8 +2,10 @@
 	import * as Breadcrumb from '$lib/components/ui/breadcrumb/index.js';
 	import Button from '@/components/ui/button/button.svelte';
 	import * as Card from '@/components/ui/card';
+	import PurchaseToast from './PruchaseToast.svelte';
 	import { Rocket, ZapPurchase } from '@/event_helpers/rockets';
 	import { devmode } from '@/stores/session';
+	import { toast } from 'svelte-sonner';
 	import type { NDKEvent } from '@nostr-dev-kit/ndk';
 	import BitcoinAssociations from './AssociatedBitcoinAddresses.svelte';
 	import MeritRequests from './MeritRequests.svelte';
@@ -11,10 +13,47 @@
 	import ProductFomo from './ProductFomo.svelte';
 	import ProposedProducts from './ProposedProducts.svelte';
 	import UpdateMission from './UpdateMission.svelte';
+	import { onMount } from 'svelte';
 
 	export let rocket: NDKEvent;
 
 	$: unratifiedZaps = new Map<string, ZapPurchase>();
+	let lastCheckTime = Date.now() / 1000; // Current time in seconds
+
+	function checkNewZaps() {
+		const currentTime = Date.now() / 1000;
+		const recentZaps = Array.from(unratifiedZaps.values()).filter(
+			(zap) =>
+				zap.ZapReceipt.created_at &&
+				zap.ZapReceipt.created_at > lastCheckTime &&
+				zap.ZapReceipt.created_at <= currentTime
+		);
+
+		recentZaps.forEach((zapPurchase) => {
+			toast(PurchaseToast, {
+				componentProps: {
+					zapPurchase,
+					rocket: new Rocket(rocket)
+				}
+			});
+		});
+
+		lastCheckTime = currentTime;
+	}
+	$: {
+		if (unratifiedZaps.size > 0) {
+			checkNewZaps();
+		}
+	}
+	onMount(() => {
+		lastCheckTime = Date.now() / 1000 - 30; // 30 seconds ago
+	});
+
+	$: lasted = Array.from(unratifiedZaps.values()).sort((a, b) => {
+		if (a.ZapReceipt.created_at && b.ZapReceipt.created_at) {
+			return b.ZapReceipt.created_at - a.ZapReceipt.created_at;
+		} else return 0;
+	})[0];
 </script>
 
 <div class="flex flex-col gap-4">
@@ -32,6 +71,27 @@
 		</Breadcrumb.Root>
 	</header>
 	<main class="grid w-full flex-1 grid-cols-1 items-start gap-4 sm:grid-cols-3 md:gap-2">
+		{#if $devmode}
+			<Button
+				on:click={() => {
+					if (!lasted) {
+						toast('unratifiedZaps is null');
+					} else {
+						console.log(lasted);
+						toast(PurchaseToast, {
+							componentProps: {
+								zapPurchase: lasted,
+								rocket: new Rocket(rocket)
+							}
+						});
+					}
+				}}
+				variant="outline">Popup Last Purchase Notification</Button
+			>
+			<Button variant="outline" on:click={() => console.log(Array.from(unratifiedZaps.values()))}
+				>print unratifiedZaps</Button
+			>
+		{/if}
 		<MeritsAndSatflow {unratifiedZaps} rocket={new Rocket(rocket)} />
 
 		<ProductFomo bind:unratifiedZaps rocket={new Rocket(rocket)} />

src/routes/+layout.svelte

@@ -27,16 +27,19 @@
 		sessionStarted = true;
 	}
 
-	onMount(()=>{getBitcoinTip();})
+	onMount(() => {
-
-	setInterval(function () {
 		getBitcoinTip();
-	}, 2* 60 * 1000);
+	});
+
+	setInterval(
+		function () {
+			getBitcoinTip();
+		},
+		2 * 60 * 1000
+	);
 </script>
 
 <ModeWatcher defaultMode="dark" />
 <SidePanelLayout>
 	<div slot="content"><slot></slot></div>
 </SidePanelLayout>
-
-<style></style>