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Mejora del scroll #39

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295 changes: 295 additions & 0 deletions 04-chatgpt-local/.history/index_20240612184154.html
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<!DOCTYPE html>
<html lang="en">

<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>ChatGPT Local 100% privado, gratis y maravilloso</title>

<style>
body {
font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Open Sans", "Helvetica Neue", sans-serif;
background: #f0f0f0;
display: grid;
place-content: center;
height: 100dvh;
}

main {
width: 400px;
max-width: 100%;
height: 70vh;

background: #fff;
border: 1px solid #ccc;
border-radius: 4px;
box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
padding: 8px;
margin-bottom: 16px;

overflow-y: auto;
scroll-behavior: smooth;
}

ul {
display: flex;
flex-direction: column;
list-style: none;
padding: 0;
}

.message {
display: flex;
flex-direction: column;
margin: 4px 0;
padding: 4px 8px;

span {
width: 36px;
height: 36px;
background: #eee;
font-size: 12px;
font-weight: 500;
display: flex;
justify-content: center;
align-items: center;
border-radius: 999999px;
}

p {
border-radius: 4px;
padding: 4px 8px;
margin-top: 4px;
}

&.user {
align-self: flex-end;
align-items: flex-end;

span,
p {
background: rgb(219, 236, 255);
}
}

&.bot {
align-self: flex-start;

span,
p {
background: rgb(198, 255, 220);
}
}
}

form {
display: flex;

input {
border-radius: 999999px;
flex-grow: 1;
border: 0;
padding: 8px;
margin-right: 8px;
border: 1px solid #ccc;
}

button {
background: #09f;
border: 0;
color: white;
border-radius: 6px;
cursor: pointer;
padding: 8px;
transition: background .3s ease;

&[disabled] {
background: #ccc;
opacity: .6;
pointer-events: none;
}

&:hover {
background: rgb(0, 104, 173);
}
}
}

small {
font-size: 10px;
color: #555;
position: fixed;
bottom: 10px;
left: 0;
right: 0;
margin: auto;
width: 400px;
}

.loading {
text-align: center;
display: flex;
justify-content: center;
height: 100%;
align-items: center;
flex-direction: column;
margin-top: 50%;

i {
pointer-events: none;
width: 2.5em;
height: 2.5em;
border: 0.4em solid transparent;
border-color: #eee;
border-top-color: #3E67EC;
border-radius: 50%;
animation: loadingspin 1s linear infinite;
}

h4 {
color: #444;
margin-bottom: 8px;
}

h5 {
font-weight: 400;
margin: 0;
font-size: 10px;
opacity: .4;
}
}

@keyframes loadingspin {
100% {
transform: rotate(360deg)
}
}
</style>

<script type="module">
import { CreateWebWorkerMLCEngine } from "https://esm.run/@mlc-ai/web-llm"

const $ = el => document.querySelector(el)

// pongo delante de la variable un símbolo de $
// para indicar que es un elemento del DOM
const $form = $('form')
const $input = $('input')
const $template = $('#message-template')
const $messages = $('ul')
const $container = $('main')
const $button = $('button')
const $info = $('small')
const $loading = $('.loading')

let messages = []

const SELECTED_MODEL = 'Llama-3-8B-Instruct-q4f32_1-MLC-1k'

const engine = await CreateWebWorkerMLCEngine(
new Worker('./worker.js', { type: 'module' }),
SELECTED_MODEL,
{
initProgressCallback: (info) => {
$info.textContent = `${info.text}%`
if (info.progress === 1) {
$loading.parentNode.removeChild($loading)
$button.removeAttribute('disabled')
addMessage("¡Hola! Soy un ChatGPT que se ejecuta completamente en tu navegador. ¿En qué puedo ayudarte hoy?", 'bot')
$input.focus()
}
}
}
)

$form.addEventListener('submit', async (event) => {
event.preventDefault()
const messageText = $input.value.trim()

if (messageText !== '') {
// añadimos el mensaje en el DOM
$input.value = ''
}

addMessage(messageText, 'user')
$button.setAttribute('disabled', '')

const userMessage = {
role: 'user',
content: messageText
}

messages.push(userMessage)

const chunks = await engine.chat.completions.create({
messages,
stream: true
})

let reply = ""

const $botMessage = addMessage("", 'bot')

for await (const chunk of chunks) {
const choice = chunk.choices[0]
const content = choice?.delta?.content ?? ""
reply += content
$botMessage.textContent = reply
}

$button.removeAttribute('disabled')
messages.push({
role: 'assistant',
content: reply
})
$container.scrollTop = $container.scrollHeight
})

function addMessage(text, sender) {
// clonar el template
const clonedTemplate = $template.content.cloneNode(true)
const $newMessage = clonedTemplate.querySelector('.message')

const $who = $newMessage.querySelector('span')
const $text = $newMessage.querySelector('p')

$text.textContent = text
$who.textContent = sender === 'bot' ? 'GPT' : 'Tú'
$newMessage.classList.add(sender)

$messages.appendChild($newMessage)

$container.scrollTop = $container.scrollHeight

return $text
}
</script>
</head>

<body>
<main>
<ul>
<li class="loading">
<i></i>
<h4>Cargando...</h4>
<h5>Esto puede tardar un poco. Paciencia.</h5>
</li>
</ul>
</main>

<form>
<input placeholder="Escribe tu mensaje aquí...">
<button disabled>Enviar</button>
</form>

<small>&nbsp;</small>

<template id="message-template">
<li class="message">
<span></span>
<p></p>
</li>
</template>
</body>

</html>
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