andy-stack_vaultkeeper-ai/Components/ChatArea.svelte
Andrew Beal a4c65f16c2 Update file attachment messaging and add document file support
Add support for DOCX, PPTX, XLSX, ODT, ODP, and ODS document formats by converting them to plain text. Standardize attachment introduction messages across all AI providers from "Binary data for X follows" to "The contents of the file 'X' are provided below."
2026-03-15 19:48:28 +00:00

490 lines
No EOL
14 KiB
Svelte

<script lang="ts">
import { Resolve } from "Services/DependencyService";
import { Services } from "Services/Services";
import type { StreamingMarkdownService } from "Services/StreamingMarkdownService";
import ThoughtIndicator from "./ThoughtIndicator.svelte";
import StreamingIndicator from "./StreamingIndicator.svelte";
import { Greeting } from "Enums/Greeting";
import { Role } from "Enums/Role";
import type { ConversationContent } from "Conversations/ConversationContent";
import { tick } from "svelte";
import { Selector } from "Enums/Selector";
import { Exception } from "Helpers/Exception";
import { getOuterHeight, setElementIcon } from "Helpers/ElementHelper";
export let messages: ConversationContent[] = [];
export let currentThought: string | null = null;
export let isSubmitting: boolean = false;
export let chatContainer: HTMLDivElement;
export let currentStreamingMessageId: string | null = null;
export let editModeActive: boolean = false;
export function resetChatArea() {
autoScroll = true;
messageElements = [];
lastProcessedContent.clear();
currentStreamFinalized = false;
if (chatAreaPaddingElement) {
chatAreaPaddingElement.style.padding = "0px";
}
chatContainer.scroll({ top: 0, behavior: "instant" });
}
export function resetAutoScroll() {
autoScroll = true;
}
export async function updateChatAreaLayout(behavior: ScrollBehavior | undefined, shouldSettle: boolean = false) {
await tick();
if (!chatAreaPaddingElement) {
return;
}
if (messageElements.length <= 0) {
chatAreaPaddingElement.style.paddingBottom = "0px";
return;
}
requestAnimationFrame(() => {
applyLayout(behavior, shouldSettle);
});
}
function applyLayout(behavior: ScrollBehavior | undefined, shouldSettle: boolean) {
if (!chatAreaPaddingElement || messageElements.length <= 0) {
return;
}
const styles = getComputedStyle(chatContainer);
const gap = parseFloat(styles.gap) || 0;
const paddingTop = parseFloat(styles.paddingTop) || 0;
const paddingBottom = parseFloat(styles.paddingBottom) || 0;
const sortedMessages = messageElements.sort((a, b) => a.index - b.index);
const lastMessage = sortedMessages[sortedMessages.length - 1];
let contentHeight = getOuterHeight(lastMessage.element);
if (!shouldSettle) {
if (thoughtIndicatorElement) {
contentHeight += getOuterHeight(thoughtIndicatorElement) + gap;
}
if (streamingIndicatorElement) {
contentHeight += getOuterHeight(streamingIndicatorElement) + gap;
}
}
const availableHeight = chatContainer.offsetHeight - paddingTop - paddingBottom;
let padding = shouldSettle
? Math.max(0, availableHeight - contentHeight)
: Math.max(25, availableHeight - contentHeight);
chatAreaPaddingElement.style.paddingBottom = `${padding}px`;
if (behavior && autoScroll) {
chatContainer.scroll({ top: chatContainer.scrollHeight, behavior });
}
}
let autoScroll: boolean = true;
let lastScrollTop: number = 0;
let chatAreaPaddingElement: HTMLElement | undefined;
let thoughtIndicatorElement: HTMLElement | undefined;
let streamingIndicatorElement: HTMLElement | undefined;
let streamingMarkdownService: StreamingMarkdownService = Resolve<StreamingMarkdownService>(Services.StreamingMarkdownService);
let messageElements: { index: number, element: HTMLElement }[] = [];
let lastProcessedContent: Map<string, string> = new Map<string, string>();
let currentStreamFinalized: boolean = false;
function getGreetingByTime(): string {
const hour = new Date().getHours();
// Morning: 5am - 11:59am
if (hour >= 5 && hour < 12) {
return Greeting.Morning;
}
// Midday: 12pm - 4:59pm
else if (hour >= 12 && hour < 17) {
return Greeting.Midday;
}
// Evening: 5pm - 8:59pm
else if (hour >= 17 && hour < 21) {
return Greeting.Evening;
}
// Night: 9pm - 4:59am
else {
return Greeting.Night;
}
}
function updateMessageContent(messageId: string, content: string, isCurrentlyStreaming: boolean) {
if (isCurrentlyStreaming) {
streamingMarkdownService.streamChunk(messageId, content);
currentStreamFinalized = false;
} else if (!currentStreamFinalized) {
streamingMarkdownService.finalizeStream(messageId, content);
currentStreamFinalized = true;
}
}
// Process static messages (user messages and initial load)
function getStaticHTML(message: ConversationContent): string {
if (message.role === Role.User) {
return `<div>${message.content}</div>`;
}
// For assistant messages, check if this specific message is currently streaming
const messageId = message.timestamp.getTime().toString();
const isCurrentlyStreaming = currentStreamingMessageId === messageId;
// For assistant messages that aren't streaming, use traditional parsing
if (!isCurrentlyStreaming) {
const content = message.getDisplayContent();
if (message.errorType) {
return `<div class="${Selector.ErrorSelector}">${content}</div>`;
}
try {
return streamingMarkdownService.formatText(content) || `<div>${content}</div>`;
} catch (error) {
Exception.log(error);
return `<div>${content}</div>`;
}
}
return ""; // Streaming messages will be handled by the streaming service
}
function streamingAction(element: HTMLElement, messageId: string) {
streamingMarkdownService.initializeStream(messageId, element);
}
function trackingAction(element: HTMLElement, index: number) {
messageElements.push({ index: index, element: element });
}
function observeResize(element: HTMLElement) {
const observer = new ResizeObserver(() => {
updateChatAreaLayout("smooth");
});
observer.observe(element);
return {
destroy() {
observer.disconnect();
}
};
}
// decide if we should be auto scrolling
function handleScroll() {
if (!chatContainer) {
return;
}
const scrollTop = chatContainer.scrollTop;
const scrollHeight = chatContainer.scrollHeight;
const clientHeight = chatContainer.clientHeight;
// Only process if the user actually scrolled (scrollTop changed)
// This prevents false triggers when content grows and pushes things down
if (scrollTop === lastScrollTop) {
return;
}
const previousScrollTop = lastScrollTop;
lastScrollTop = scrollTop;
// Check if we're at the bottom (with a small tolerance for rounding errors)
const isAtBottom = scrollHeight - scrollTop - clientHeight < 5;
if (isAtBottom) {
autoScroll = true;
} else if (scrollTop < previousScrollTop) {
autoScroll = false; // user scrolled up
}
}
// Track streaming messages and update them incrementally
$: {
messages.forEach((message) => {
if (message.role !== Role.User) {
const messageId = message.timestamp.getTime().toString();
const lastContent = lastProcessedContent.get(messageId) || "";
// Only update if content has changed
if (message.content !== lastContent) {
// Check if this specific message is currently streaming
const isCurrentlyStreaming = currentStreamingMessageId === messageId;
const content = message.getDisplayContent();
// Only process through streaming service if actively streaming
if (isCurrentlyStreaming) {
updateMessageContent(messageId, content, isCurrentlyStreaming);
}
lastProcessedContent.set(messageId, content);
}
}
});
}
$: {
if (messages.length === 0 && chatAreaPaddingElement) {
chatAreaPaddingElement.style.padding = "0px";
}
}
</script>
<div class="chat-area-wrapper">
{#if messages.length > 0}
<div class="top-fade"></div>
{/if}
<div class="chat-area" bind:this={chatContainer} on:scroll={handleScroll} use:observeResize>
{#each messages as message, index}
{@const content = message.getDisplayContent()}
{#if message.shouldDisplayContent && content.trim() !== ""}
{#if message.role === Role.User}
<div class="message-container {Role.User}" use:trackingAction={index}>
<div class="message-bubble {Role.User}">
<div class="message-text-user-container content-fade-in" contenteditable="false">
<div class="message-text-user">
{@html content}
</div>
</div>
{#if message.references.length > 0}
<hr class="message-attachment-break"/>
<div class="message-attachments-container">
{#each message.references as reference}
<div class="message-attachmanet" aria-label="{reference.fileName}">
<div
class="message-attachment-icon"
use:setElementIcon={reference.getIconName()}
></div>
<div class="message-attachment-info">
<div class="message-attachment-name">{reference.fileName}</div>
<div class="message-attachment-size">{reference.size}MB</div>
</div>
</div>
{/each}
</div>
{/if}
</div>
</div>
{:else}
{@const messageId = message.timestamp.getTime().toString()}
<div class="message-container {Role.Assistant}" use:trackingAction={index}>
<div class="message-bubble {Role.Assistant}">
<div class="markdown-content content-fade-in {currentStreamingMessageId === messageId ? "streaming" : ""}">
{#if currentStreamingMessageId === messageId}
<div use:streamingAction={messageId} class="streaming-content"></div>
{:else}
{@html getStaticHTML(message)}
{/if}
</div>
</div>
</div>
{/if}
{/if}
{/each}
<ThoughtIndicator thought={currentThought} {editModeActive} bind:thoughtIndicatorElement={thoughtIndicatorElement}/>
{#if isSubmitting}
<StreamingIndicator editModeActive={editModeActive} bind:streamingIndicatorElement={streamingIndicatorElement}/>
{/if}
<div bind:this={chatAreaPaddingElement} style:user-select=none></div>
{#if messages.length === 0}
<div class="conversation-empty-state">
<div class="typing-in">{getGreetingByTime()}</div>
</div>
{/if}
</div>
{#if messages.length > 0}
<div class="bottom-fade"></div>
{/if}
</div>
<style>
.chat-area-wrapper {
position: relative;
height: 100%;
width: 100%;
}
.top-fade {
position: absolute;
top: 0;
left: 0;
right: 0;
height: var(--size-4-4);
background-image: linear-gradient(to bottom, var(--background-secondary), transparent);
z-index: 10;
pointer-events: none;
}
.bottom-fade {
position: absolute;
bottom: 0;
left: 0;
right: 0;
height: var(--size-4-4);
background-image: linear-gradient(to top, var(--background-secondary), transparent);
z-index: 10;
pointer-events: none;
}
.chat-area {
position: relative;
display: flex;
flex-direction: column;
height: 100%;
overflow: auto;
padding: var(--size-4-4) var(--size-4-3) var(--size-4-3) var(--size-4-3);
gap: var(--size-4-2);
scroll-behavior: smooth;
}
.chat-area::-webkit-scrollbar {
display: none;
}
.message-container {
display: flex;
text-align: left;
margin: 0;
}
.message-container.user {
justify-content: flex-end;
}
.message-container.assistant {
justify-content: flex-start;
}
.message-bubble {
word-wrap: break-word;
}
.message-bubble.user {
word-wrap: break-word;
max-width: 70%;
border: var(--border-width) solid var(--background-modifier-border);
border-radius: var(--radius-m);
padding: 0px var(--size-4-2);
}
.message-bubble.assistant {
word-wrap: break-word;
max-width: 100%;
}
.message-text-user-container {
max-height: 15vh;
overflow: scroll;
padding-top: var(--size-4-2);
white-space: pre-wrap;
}
.message-text-user-container::-webkit-scrollbar {
display: none;
}
.message-text-user-container {
padding-bottom: var(--size-4-2);
}
.conversation-empty-state {
margin: auto;
font-style: italic;
font-size: var(--font-ui-medium);
color: var(--text-muted);
pointer-events: none;
}
.streaming-content {
justify-content: left;
min-height: 1em; /* Ensure the element exists for binding */
}
/* Streaming message styles */
.content-fade-in {
animation: reveal-fade 0.5s ease-in-out forwards;
}
@keyframes reveal-fade {
0% {
opacity: 0;
transform: translateY(10px);
}
100% {
opacity: 1;
transform: translateY(0);
}
}
/* Message attachments styles */
.message-attachment-break {
color: var(--background-secondary-alt);
margin: 0 0 var(--size-4-2) 0;
opacity: 0.5;
}
.message-attachments-container {
display: flex;
overflow-x: auto;
overflow-y: hidden;
scroll-behavior: smooth;
gap: var(--size-4-2);
margin-bottom: var(--size-4-2);
}
.message-attachments-container::-webkit-scrollbar {
display: none;
}
.message-attachmanet {
display: grid;
grid-template-rows: var(--size-4-2) auto var(--size-4-2);
grid-template-columns: var(--size-4-2) auto var(--size-4-2) auto var(--size-4-2);
background-color: var(--background-secondary-alt);
border: var(--border-width) solid var(--background-modifier-border);
border-radius: var(--radius-m);
flex-shrink: 0;
}
.message-attachment-icon {
grid-row: 2;
grid-column: 2;
display: flex;
align-items: center;
justify-content: center;
}
.message-attachment-info {
grid-row: 2;
grid-column: 4;
min-width: 40px;
overflow: hidden;
}
.message-attachment-name {
display: inline-block;
white-space: nowrap;
width: 100%;
padding: 0;
font-size: var(--font-smaller);
}
.message-attachment-size {
padding: 0;
font-size: var(--font-smallest);
color: var(--text-muted);
}
</style>