From 69a037257e61fb74dfa012a62ad4933dd2dc44e9 Mon Sep 17 00:00:00 2001
From: "Timothy J. Baek" <timothyjrbeck@gmail.com>
Date: Tue, 2 Jan 2024 00:55:28 -0800
Subject: [PATCH] feat: prompt preset support

---
 .gitignore                                    |   1 -
 src/lib/components/chat/MessageInput.svelte   | 110 ++++++++++++----
 .../chat/MessageInput/PromptCommands.svelte   | 121 ++++++++++++++++++
 src/lib/utils/index.ts                        |  16 +++
 4 files changed, 220 insertions(+), 28 deletions(-)
 create mode 100644 src/lib/components/chat/MessageInput/PromptCommands.svelte

diff --git a/.gitignore b/.gitignore
index 1250aef9..528e1f83 100644
--- a/.gitignore
+++ b/.gitignore
@@ -24,7 +24,6 @@ dist/
 downloads/
 eggs/
 .eggs/
-lib/
 lib64/
 parts/
 sdist/
diff --git a/src/lib/components/chat/MessageInput.svelte b/src/lib/components/chat/MessageInput.svelte
index d2fe8ca2..b55d4192 100644
--- a/src/lib/components/chat/MessageInput.svelte
+++ b/src/lib/components/chat/MessageInput.svelte
@@ -3,6 +3,8 @@
 	import toast from 'svelte-french-toast';
 	import Suggestions from './MessageInput/Suggestions.svelte';
 	import { onMount } from 'svelte';
+	import Prompts from './MessageInput/PromptCommands.svelte';
+	import { findWordIndices } from '$lib/utils';
 
 	export let submitPrompt: Function;
 	export let stopResponse: Function;
@@ -11,6 +13,8 @@
 	export let autoScroll = true;
 
 	let filesInputElement;
+	let promptsElement;
+
 	let inputFiles;
 	let dragged = false;
 
@@ -154,36 +158,42 @@
 
 <div class="fixed bottom-0 w-full">
 	<div class="px-2.5 pt-2.5 -mb-0.5 mx-auto inset-x-0 bg-transparent flex justify-center">
-		{#if messages.length == 0 && suggestionPrompts.length !== 0}
-			<div class="max-w-3xl w-full">
-				<Suggestions {suggestionPrompts} {submitPrompt} />
+		<div class="flex flex-col max-w-3xl w-full">
+			<div>
+				{#if autoScroll === false && messages.length > 0}
+					<div class=" flex justify-center mb-4">
+						<button
+							class=" bg-white border border-gray-100 dark:border-none dark:bg-white/20 p-1.5 rounded-full"
+							on:click={() => {
+								autoScroll = true;
+								window.scrollTo({ top: document.body.scrollHeight, behavior: 'smooth' });
+							}}
+						>
+							<svg
+								xmlns="http://www.w3.org/2000/svg"
+								viewBox="0 0 20 20"
+								fill="currentColor"
+								class="w-5 h-5"
+							>
+								<path
+									fill-rule="evenodd"
+									d="M10 3a.75.75 0 01.75.75v10.638l3.96-4.158a.75.75 0 111.08 1.04l-5.25 5.5a.75.75 0 01-1.08 0l-5.25-5.5a.75.75 0 111.08-1.04l3.96 4.158V3.75A.75.75 0 0110 3z"
+									clip-rule="evenodd"
+								/>
+							</svg>
+						</button>
+					</div>
+				{/if}
 			</div>
-		{/if}
 
-		{#if autoScroll === false && messages.length > 0}
-			<div class=" flex justify-center mb-4">
-				<button
-					class=" bg-white border border-gray-100 dark:border-none dark:bg-white/20 p-1.5 rounded-full"
-					on:click={() => {
-						autoScroll = true;
-						window.scrollTo({ top: document.body.scrollHeight, behavior: 'smooth' });
-					}}
-				>
-					<svg
-						xmlns="http://www.w3.org/2000/svg"
-						viewBox="0 0 20 20"
-						fill="currentColor"
-						class="w-5 h-5"
-					>
-						<path
-							fill-rule="evenodd"
-							d="M10 3a.75.75 0 01.75.75v10.638l3.96-4.158a.75.75 0 111.08 1.04l-5.25 5.5a.75.75 0 01-1.08 0l-5.25-5.5a.75.75 0 111.08-1.04l3.96 4.158V3.75A.75.75 0 0110 3z"
-							clip-rule="evenodd"
-						/>
-					</svg>
-				</button>
+			<div class="w-full">
+				{#if prompt.charAt(0) === '/'}
+					<Prompts bind:this={promptsElement} bind:prompt />
+				{:else if messages.length == 0 && suggestionPrompts.length !== 0}
+					<Suggestions {suggestionPrompts} {submitPrompt} />
+				{/if}
 			</div>
-		{/if}
+		</div>
 	</div>
 	<div class="bg-white dark:bg-gray-800">
 		<div class="max-w-3xl px-2.5 -mb-0.5 mx-auto inset-x-0">
@@ -315,6 +325,52 @@
 									userMessageElement.scrollIntoView({ block: 'center' });
 									editButton?.click();
 								}
+
+								if (prompt.charAt(0) === '/' && e.key === 'Tab') {
+									e.preventDefault();
+
+									const commandOptionButton = [
+										...document.getElementsByClassName('selected-command-option-button')
+									]?.at(-1);
+
+									commandOptionButton?.click();
+								}
+
+								if (prompt.charAt(0) === '/' && e.key === 'ArrowUp') {
+									promptsElement.selectUp();
+
+									const commandOptionButton = [
+										...document.getElementsByClassName('selected-command-option-button')
+									]?.at(-1);
+									commandOptionButton.scrollIntoView({ block: 'center' });
+								}
+
+								if (prompt.charAt(0) === '/' && e.key === 'ArrowDown') {
+									promptsElement.selectDown();
+
+									const commandOptionButton = [
+										...document.getElementsByClassName('selected-command-option-button')
+									]?.at(-1);
+									commandOptionButton.scrollIntoView({ block: 'center' });
+								}
+
+								if (prompt.charAt(0) === '/' && e.key === 'Enter') {
+									e.preventDefault();
+
+									const commandOptionButton = [
+										...document.getElementsByClassName('selected-command-option-button')
+									]?.at(-1);
+
+									commandOptionButton?.click();
+								}
+
+								const words = findWordIndices(prompt);
+
+								if (words.length > 0 && e.key === 'Tab') {
+									const word = words.at(0);
+									e.preventDefault();
+									e.target.setSelectionRange(word?.startIndex, word.endIndex + 1);
+								}
 							}}
 							rows="1"
 							on:input={(e) => {
diff --git a/src/lib/components/chat/MessageInput/PromptCommands.svelte b/src/lib/components/chat/MessageInput/PromptCommands.svelte
new file mode 100644
index 00000000..91e5f1aa
--- /dev/null
+++ b/src/lib/components/chat/MessageInput/PromptCommands.svelte
@@ -0,0 +1,121 @@
+<script lang="ts">
+	import { findWordIndices } from '$lib/utils';
+	import { tick } from 'svelte';
+
+	export let prompt = '';
+
+	let selectedCommandIdx = 0;
+
+	let promptCommands = [
+		{
+			command: '/article',
+			title: 'Article Generator',
+			content: `Write an article about [topic]
+
+include relevant statistics (add the links of the sources you use) and consider diverse perspectives. Write it in a [X_tone] and mention the source links in the end.`
+		},
+		{
+			command: '/backlink',
+
+			title: 'Backlink Outreach Email',
+			content: `Write a link-exchange outreach email on behalf of [your name] from [your_company] to ask for a backlink from their [website_url] to [your website url].`
+		},
+		{
+			command: '/faq',
+
+			title: 'FAQ Generator',
+			content: `Create a list of [10] frequently asked questions about [keyword] and provide answers for each one of them considering the SERP and rich result guidelines.`
+		},
+		{
+			command: '/headline',
+
+			title: 'Headline Generator',
+			content: `Generate 10 attention-grabbing headlines for an article about [your topic]`
+		},
+		{
+			command: '/product',
+
+			title: 'Product Description',
+			content: `Craft an irresistible product description that highlights the benefits of [your product]`
+		},
+		{
+			command: '/seo',
+
+			title: 'SEO Content Brief',
+			content: `Create a SEO content brief for [keyword].`
+		}
+	];
+
+	let filteredPromptCommands = [];
+
+	$: filteredPromptCommands = promptCommands.filter((p) => p.command.includes(prompt));
+
+	$: if (prompt) {
+		selectedCommandIdx = 0;
+	}
+
+	export const selectUp = () => {
+		selectedCommandIdx = Math.max(0, selectedCommandIdx - 1);
+	};
+
+	export const selectDown = () => {
+		selectedCommandIdx = Math.min(selectedCommandIdx + 1, filteredPromptCommands.length - 1);
+	};
+
+	const confirmCommand = async (command) => {
+		prompt = command.content;
+
+		const chatInputElement = document.getElementById('chat-textarea');
+
+		await tick();
+
+		chatInputElement.style.height = '';
+		chatInputElement.style.height = Math.min(chatInputElement.scrollHeight, 200) + 'px';
+
+		chatInputElement?.focus();
+
+		await tick();
+
+		const words = findWordIndices(prompt);
+
+		if (words.length > 0) {
+			const word = words.at(0);
+			chatInputElement.setSelectionRange(word?.startIndex, word.endIndex + 1);
+		}
+	};
+</script>
+
+{#if filteredPromptCommands.length > 0}
+	<div class="md:px-2 mb-3 text-left w-full">
+		<div class="flex w-full rounded-lg border border-gray-100 dark:border-gray-700">
+			<div class=" bg-gray-100 dark:bg-gray-700 w-10 rounded-l-lg text-center">
+				<div class=" text-lg font-medium mt-2">/</div>
+			</div>
+			<div class=" max-h-60 overflow-y-auto bg-white w-full p-2 rounded-r-lg space-y-0.5">
+				{#each filteredPromptCommands as command, commandIdx}
+					<button
+						class=" px-3 py-1.5 rounded-lg w-full text-left {commandIdx === selectedCommandIdx
+							? ' bg-gray-100 selected-command-option-button'
+							: ''}"
+						type="button"
+						on:click={() => {
+							confirmCommand(command);
+						}}
+						on:mousemove={() => {
+							selectedCommandIdx = commandIdx;
+						}}
+						on:focus={() => {}}
+					>
+						<div class=" font-medium text-black">
+							{command.command}
+						</div>
+
+						<div class=" text-xs text-gray-600">
+							{command.title}
+						</div>
+					</button>
+				{/each}
+			</div>
+		</div>
+	</div>
+{/if}
diff --git a/src/lib/utils/index.ts b/src/lib/utils/index.ts
index 8f7e711b..344672da 100644
--- a/src/lib/utils/index.ts
+++ b/src/lib/utils/index.ts
@@ -111,3 +111,19 @@ export const checkVersion = (required, current) => {
 				caseFirst: 'upper'
 		  }) < 0;
 };
+
+export const findWordIndices = (text) => {
+	const regex = /\[([^\]]+)\]/g;
+	let matches = [];
+	let match;
+
+	while ((match = regex.exec(text)) !== null) {
+		matches.push({
+			word: match[1],
+			startIndex: match.index,
+			endIndex: regex.lastIndex - 1
+		});
+	}
+
+	return matches;
+};