From d2582a22a6df7c257281d9511ad07a2d72498d26 Mon Sep 17 00:00:00 2001
From: Adam Soltys <asoltys@gmail.com>
Date: Thu, 5 Jan 2023 16:35:10 -0800
Subject: messages cache

---
 src/components/AppHeader.svelte                    |  2 +-
 src/lib/nostr.js                                   |  2 +-
 src/lib/store.js                                   |  3 +-
 .../(app)/[username]/(profile)/+layout.svelte      | 22 ++++---
 .../[username]/(profile)/followers/+page.svelte    |  5 +-
 .../[username]/(profile)/messages/+page.server.js  |  6 +-
 .../[username]/(profile)/messages/+page.svelte     | 76 +++++++++++++---------
 src/routes/(app)/login/+page.svelte                |  1 +
 8 files changed, 71 insertions(+), 46 deletions(-)

(limited to 'src')

diff --git a/src/components/AppHeader.svelte b/src/components/AppHeader.svelte
index e5747542..e182a60f 100644
--- a/src/components/AppHeader.svelte
+++ b/src/components/AppHeader.svelte
@@ -100,7 +100,7 @@
 						<ul class="space-y-5 w-48">
 							{#each menuButtons as { href, icon, key }}
 								<li>
-									<a {href}  data-sveltekit-prefetch="off">
+									<a {href} data-sveltekit-prefetch="off">
 										<button class="flex justify-center items-center font-semibold hover:opacity-80"
 											><Icon {icon} style="mr-2 w-6 md:w-8" /> {$t(key)}
 										</button>
diff --git a/src/lib/nostr.js b/src/lib/nostr.js
index aff75c1b..ae18fbf1 100644
--- a/src/lib/nostr.js
+++ b/src/lib/nostr.js
@@ -60,7 +60,7 @@ export let encrypt = async ({ message, recipient, user }) => {
 export let decrypt = async ({ event, user }) => {
 	try {
 		let { content, pubkey } = event;
-    if (pubkey === user.pubkey) pubkey = event.tags[0][1];
+		if (pubkey === user.pubkey) pubkey = event.tags[0][1];
 		pubkey = Uint8Array.from(Buffer.from('02' + pubkey, 'hex'));
 
 		let sharedPoint = Buffer.from(
diff --git a/src/lib/store.js b/src/lib/store.js
index 9660bf55..6a2d7fd6 100644
--- a/src/lib/store.js
+++ b/src/lib/store.js
@@ -55,5 +55,6 @@ export const request = writable();
 export const invoice = writable();
 export const txns = persistLocal('transactions', []);
 export const events = writable({});
-export const password = writable();
+export const password = persistLocal('password');
 export const passwordPrompt = writable();
+export const messages = persistLocal('messages', {});
diff --git a/src/routes/(app)/[username]/(profile)/+layout.svelte b/src/routes/(app)/[username]/(profile)/+layout.svelte
index 98842016..8a651852 100644
--- a/src/routes/(app)/[username]/(profile)/+layout.svelte
+++ b/src/routes/(app)/[username]/(profile)/+layout.svelte
@@ -83,16 +83,18 @@
 					</div>
 				{/if}
 			{/if}
-			<div class="w-full flex">
-				<a href={`/${subject.pubkey}/messages`} class="mx-auto">
-					<button class="rounded-full border py-3 px-6 font-bold hover:opacity-80 flex w-60">
-						<div class="mx-auto flex">
-							<Icon icon="support" style="mr-1" />
-							<div>Message</div>
-						</div>
-					</button>
-				</a>
-			</div>
+			{#if user.pubkey !== subject.pubkey}
+				<div class="w-full flex">
+					<a href={`/${subject.pubkey}/messages`} class="mx-auto">
+						<button class="rounded-full border py-3 px-6 font-bold hover:opacity-80 flex w-60">
+							<div class="mx-auto flex">
+								<Icon icon="support" style="mr-1" />
+								<div>Message</div>
+							</div>
+						</button>
+					</a>
+				</div>
+			{/if}
 			{#if !subject.anon}
 				<div class="w-full flex">
 					<a href={`/${subject.username}/receive`} class="mx-auto">
diff --git a/src/routes/(app)/[username]/(profile)/followers/+page.svelte b/src/routes/(app)/[username]/(profile)/followers/+page.svelte
index eebc11f3..87a3b947 100644
--- a/src/routes/(app)/[username]/(profile)/followers/+page.svelte
+++ b/src/routes/(app)/[username]/(profile)/followers/+page.svelte
@@ -20,7 +20,10 @@
 		{#if followers.length}
 			<VirtualScroll data={followers} key="pubkey" let:data pageMode={true}>
 				<a href={`/${data.pubkey}`}>
-					<div class="flex border-b last:border-b-0 py-4 text-sm lg:text-lg text-secondary" :key={data.pubkey}>
+					<div
+						class="flex border-b last:border-b-0 py-4 text-sm lg:text-lg text-secondary"
+						:key={data.pubkey}
+					>
 						<div class="mb-auto mr-2">
 							<div class="md:hidden">
 								<Avatar size={12} user={data} disabled={true} />
diff --git a/src/routes/(app)/[username]/(profile)/messages/+page.server.js b/src/routes/(app)/[username]/(profile)/messages/+page.server.js
index 2efddf77..63116099 100644
--- a/src/routes/(app)/[username]/(profile)/messages/+page.server.js
+++ b/src/routes/(app)/[username]/(profile)/messages/+page.server.js
@@ -2,15 +2,15 @@ import { get } from '$lib/utils';
 
 export async function load({ params, parent, url }) {
 	let { user, subject } = await parent();
+	let { since = 0 } = params;
 
 	let messages = [];
 
 	try {
-		messages = await get(`/nostr/${user.pubkey}/${subject.pubkey}/messages`);
-		console.log('MESSAGES', messages);
+		messages = await get(`/nostr/${user.pubkey}/${subject.pubkey}/${since}/messages`);
 	} catch (e) {
 		console.log(`failed to fetch nostr messages`, e);
 	}
 
-	return { messages };
+	return { newMessages: messages };
 }
diff --git a/src/routes/(app)/[username]/(profile)/messages/+page.svelte b/src/routes/(app)/[username]/(profile)/messages/+page.svelte
index 3f8f5a72..dbf02cf2 100644
--- a/src/routes/(app)/[username]/(profile)/messages/+page.svelte
+++ b/src/routes/(app)/[username]/(profile)/messages/+page.svelte
@@ -1,27 +1,45 @@
 <script>
+	import { browser } from '$app/environment';
 	import { t } from '$lib/translations';
 	import { format, parseISO } from 'date-fns';
 	import { scale } from 'svelte/transition';
 	import { enhance } from '$app/forms';
 	import { Icon } from '$comp';
-	import { back, failure } from '$lib/utils';
+	import { back, failure, focus } from '$lib/utils';
 	import { sign, send, encrypt, decrypt } from '$lib/nostr';
+	import { messages, password } from '$lib/store';
+	import { tick, onMount } from 'svelte';
+	import { calculateId } from 'nostr';
 
 	export let data;
 	export let form;
 
-	const scrollToBottom = (node) => {
-		const scroll = () =>
-			node.scroll({
-				top: node.scrollHeight,
-				behavior: 'smooth'
-			});
-		scroll();
-
-		return { update: scroll };
+	let { newMessages, subject, user } = data;
+	let input, pane;
+
+	$: initialize($password);
+	let initialize = async (p) => {
+		if (!p) return;
+		$messages[user.pubkey] = $messages[user.pubkey] || {};
+		$messages[user.pubkey][subject.pubkey] = $messages[user.pubkey][subject.pubkey] || {};
+
+		for (let m of newMessages) {
+			if (!$messages[user.pubkey][subject.pubkey][m.id]) {
+				m.message = await decrypt({ event: m, user });
+				$messages[user.pubkey][subject.pubkey][m.id] = m;
+				tick().then(() => (pane.scrollTop = pane.scrollHeight));
+			}
+		}
+		tick().then(() => (pane.scrollTop = pane.scrollHeight));
 	};
 
-	let { messages, subject, user } = data;
+	$: events =
+		($messages[user.pubkey] &&
+			$messages[user.pubkey][subject.pubkey] &&
+			Object.values($messages[user.pubkey][subject.pubkey]).sort(
+				(a, b) => a.created_at - b.created
+			)) ||
+		[];
 
 	let sent, submitting, message;
 	let submit = async () => {
@@ -35,8 +53,10 @@
 		};
 
 		event.message = message;
-		messages.push(event);
-		messages = messages;
+		event.id = await calculateId(event);
+		$messages[user.pubkey][subject.pubkey][event.id] = event;
+		$messages = $messages;
+		tick().then(() => (pane.scrollTop = pane.scrollHeight));
 
 		try {
 			event.content = await encrypt({ message, recipient: subject.pubkey, user });
@@ -46,10 +66,11 @@
 			sent = true;
 		} catch (e) {
 			failure('Failed to send message');
-			messages.pop();
-			messages = messages;
+			delete $messages[user.pubkey][subject.pubkey][event.id];
+			$messages = $messages;
 		}
 
+		message = '';
 		submitting = false;
 	};
 </script>
@@ -59,25 +80,20 @@
 		{$t('transactions.sendMessage')}
 	</h1>
 
-	<div class="max-h-[calc(50vh)] overflow-y-scroll p-4" use:scrollToBottom={messages}>
-		{#each messages as event}
-			{@const ours = event.pubkey === user.pubkey}
+	<div class="max-h-[calc(50vh)] overflow-y-scroll p-4" bind:this={pane}>
+		{#each events as data}
+			{@const ours = data.pubkey === user.pubkey}
 			{@const theirs = !ours}
 			<div class="rounded-2xl p-4 max-w-[300px] mb-1 text-md" class:ours class:theirs>
-				{#if event.message}
-					{event.message}
+				{#if data.message}
+					{data.message}
 				{:else}
-					{#await decrypt({ event, user })}
-						-
-					{:then message}
-						{(event.message = message) && ''}
-						{event.message}
-					{/await}
+					-
 				{/if}
 			</div>
-			<div class="text-sm text-gray-400 ml-2 mb-6">
-				{format(new Date(event.created_at * 1000), 'MMM d')},
-				{format(new Date(event.created_at * 1000), 'h:mm aa')}
+			<div class="text-sm text-gray-400 mb-6" class:text-right={ours}>
+				{format(new Date(data.created_at * 1000), 'MMM d')},
+				{format(new Date(data.created_at * 1000), 'h:mm aa')}
 			</div>
 		{/each}
 	</div>
@@ -87,10 +103,12 @@
 		<input type="hidden" name="recipient" value={subject.username} />
 
 		<input
+			use:focus
 			name="message"
 			placeholder={$t('transactions.sendMessage')}
 			class="w-full p-4 border rounded-xl"
 			bind:value={message}
+			bind:this={input}
 		/>
 	</form>
 </div>
diff --git a/src/routes/(app)/login/+page.svelte b/src/routes/(app)/login/+page.svelte
index 75998cd0..9a1e41da 100644
--- a/src/routes/(app)/login/+page.svelte
+++ b/src/routes/(app)/login/+page.svelte
@@ -1,4 +1,5 @@
 <script>
+	import { messages } from '$lib/store';
 	import { RegisterOrLogin } from '$comp';
 
 	export let form;
-- 
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