feat: embed AI travel chat in collection recommendations
This commit is contained in:
374
frontend/src/lib/components/AITravelChat.svelte
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374
frontend/src/lib/components/AITravelChat.svelte
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<script lang="ts">
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import { onMount } from 'svelte';
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import { t } from 'svelte-i18n';
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import { mdiRobot, mdiSend, mdiPlus, mdiDelete, mdiMenu, mdiClose } from '@mdi/js';
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import type { ChatProviderCatalogEntry } from '$lib/types.js';
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type Conversation = {
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id: string;
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title?: string;
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};
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type ChatMessage = {
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id: string;
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role: 'user' | 'assistant' | 'tool';
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content: string;
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name?: string;
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};
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export let embedded = false;
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let conversations: Conversation[] = [];
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let activeConversation: Conversation | null = null;
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let messages: ChatMessage[] = [];
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let inputMessage = '';
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let isStreaming = false;
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let sidebarOpen = true;
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let streamingContent = '';
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let selectedProvider = 'openai';
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let providerCatalog: ChatProviderCatalogEntry[] = [];
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$: chatProviders = providerCatalog.filter((provider) => provider.available_for_chat);
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onMount(async () => {
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await Promise.all([loadConversations(), loadProviderCatalog()]);
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});
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async function loadProviderCatalog() {
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const res = await fetch('/api/chat/providers/');
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if (!res.ok) {
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return;
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}
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const catalog = (await res.json()) as ChatProviderCatalogEntry[];
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providerCatalog = catalog;
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const availableProviders = catalog.filter((provider) => provider.available_for_chat);
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if (!availableProviders.length) {
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return;
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}
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if (!availableProviders.some((provider) => provider.id === selectedProvider)) {
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selectedProvider = availableProviders[0].id;
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}
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}
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async function loadConversations() {
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const res = await fetch('/api/chat/conversations/');
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if (res.ok) {
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conversations = await res.json();
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}
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}
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async function createConversation(): Promise<Conversation | null> {
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const res = await fetch('/api/chat/conversations/', {
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method: 'POST',
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headers: { 'Content-Type': 'application/json' },
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body: JSON.stringify({})
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});
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if (!res.ok) {
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return null;
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}
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const conv: Conversation = await res.json();
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conversations = [conv, ...conversations];
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activeConversation = conv;
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messages = [];
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return conv;
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}
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async function selectConversation(conv: Conversation) {
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activeConversation = conv;
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const res = await fetch(`/api/chat/conversations/${conv.id}/`);
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if (res.ok) {
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const data = await res.json();
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messages = data.messages || [];
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}
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}
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async function deleteConversation(conv: Conversation) {
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await fetch(`/api/chat/conversations/${conv.id}/`, { method: 'DELETE' });
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conversations = conversations.filter((conversation) => conversation.id !== conv.id);
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if (activeConversation?.id === conv.id) {
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activeConversation = null;
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messages = [];
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}
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}
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async function sendMessage() {
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if (!inputMessage.trim() || isStreaming) return;
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if (!chatProviders.some((provider) => provider.id === selectedProvider)) return;
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let conversation = activeConversation;
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if (!conversation) {
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conversation = await createConversation();
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if (!conversation) return;
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}
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const userMsg: ChatMessage = { role: 'user', content: inputMessage, id: crypto.randomUUID() };
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messages = [...messages, userMsg];
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const msgText = inputMessage;
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inputMessage = '';
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isStreaming = true;
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streamingContent = '';
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const assistantMsg: ChatMessage = { role: 'assistant', content: '', id: crypto.randomUUID() };
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messages = [...messages, assistantMsg];
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try {
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const res = await fetch(`/api/chat/conversations/${conversation.id}/send_message/`, {
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method: 'POST',
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headers: { 'Content-Type': 'application/json' },
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body: JSON.stringify({ message: msgText, provider: selectedProvider })
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});
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if (!res.ok) {
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const err = await res.json();
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assistantMsg.content = err.error || $t('chat.connection_error');
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messages = [...messages];
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isStreaming = false;
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return;
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}
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const reader = res.body?.getReader();
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const decoder = new TextDecoder();
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let buffer = '';
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if (!reader) {
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isStreaming = false;
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return;
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}
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while (true) {
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const { done, value } = await reader.read();
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if (done) break;
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buffer += decoder.decode(value, { stream: true });
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const lines = buffer.split('\n');
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buffer = lines.pop() || '';
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for (const line of lines) {
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if (!line.startsWith('data: ')) continue;
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const data = line.slice(6).trim();
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if (!data || data === '[DONE]') continue;
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try {
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const parsed = JSON.parse(data);
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if (parsed.error) {
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assistantMsg.content = parsed.error;
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messages = [...messages];
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break;
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}
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if (parsed.content) {
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streamingContent += parsed.content;
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assistantMsg.content = streamingContent;
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messages = [...messages];
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}
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if (parsed.tool_result) {
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const toolMsg: ChatMessage = {
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role: 'tool',
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content: JSON.stringify(parsed.tool_result, null, 2),
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name: parsed.tool_result.tool || 'tool',
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id: crypto.randomUUID()
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};
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const idx = messages.findIndex((m) => m.id === assistantMsg.id);
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messages = [...messages.slice(0, idx), toolMsg, ...messages.slice(idx)];
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streamingContent = '';
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assistantMsg.content = '';
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}
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} catch {
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// ignore malformed chunks
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}
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}
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}
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loadConversations();
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} catch {
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assistantMsg.content = $t('chat.connection_error');
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messages = [...messages];
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} finally {
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isStreaming = false;
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}
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}
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function handleKeydown(e: KeyboardEvent) {
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if (e.key === 'Enter' && !e.shiftKey) {
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e.preventDefault();
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sendMessage();
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}
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}
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let messagesContainer: HTMLElement;
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$: if (messages && messagesContainer) {
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setTimeout(() => {
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messagesContainer?.scrollTo({ top: messagesContainer.scrollHeight, behavior: 'smooth' });
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}, 50);
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}
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</script>
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<div class="card bg-base-200 shadow-xl">
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<div class="card-body p-0">
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<div class="flex" class:h-[calc(100vh-64px)]={!embedded} class:h-[70vh]={embedded}>
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<div
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class="w-72 bg-base-200 flex flex-col border-r border-base-300 {sidebarOpen
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? ''
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: 'hidden'} lg:flex"
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>
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<div class="p-3 flex items-center justify-between border-b border-base-300">
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<h2 class="text-lg font-semibold">{$t('chat.conversations')}</h2>
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<button
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class="btn btn-sm btn-ghost"
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on:click={createConversation}
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title={$t('chat.new_conversation')}
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>
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<svg class="w-5 h-5" viewBox="0 0 24 24" fill="currentColor" aria-hidden="true">
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<path d={mdiPlus}></path>
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</svg>
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</button>
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</div>
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<div class="flex-1 overflow-y-auto">
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{#each conversations as conv}
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<div
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class="w-full p-3 hover:bg-base-300 flex items-center gap-2 {activeConversation?.id ===
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conv.id
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? 'bg-base-300'
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: ''}"
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>
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<button
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class="flex-1 text-left truncate text-sm"
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on:click={() => selectConversation(conv)}
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>
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{conv.title || $t('chat.untitled')}
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</button>
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<button
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class="btn btn-xs btn-ghost"
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on:click={() => deleteConversation(conv)}
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title={$t('chat.delete_conversation')}
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>
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<svg class="w-3.5 h-3.5" viewBox="0 0 24 24" fill="currentColor" aria-hidden="true">
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<path d={mdiDelete}></path>
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</svg>
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</button>
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</div>
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{/each}
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{#if conversations.length === 0}
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<p class="p-4 text-sm opacity-60">{$t('chat.no_conversations')}</p>
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{/if}
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</div>
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</div>
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<div class="flex-1 flex flex-col min-w-0">
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<div class="p-3 border-b border-base-300 flex items-center gap-3">
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<button
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class="btn btn-sm btn-ghost lg:hidden"
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on:click={() => (sidebarOpen = !sidebarOpen)}
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>
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{#if sidebarOpen}
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<svg class="w-5 h-5" viewBox="0 0 24 24" fill="currentColor" aria-hidden="true">
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<path d={mdiClose}></path>
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</svg>
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{:else}
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<svg class="w-5 h-5" viewBox="0 0 24 24" fill="currentColor" aria-hidden="true">
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<path d={mdiMenu}></path>
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</svg>
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{/if}
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</button>
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<svg
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class="w-6 h-6 text-primary"
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viewBox="0 0 24 24"
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fill="currentColor"
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aria-hidden="true"
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>
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<path d={mdiRobot}></path>
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</svg>
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<h2 class="text-lg font-semibold">{$t('chat.title')}</h2>
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<div class="ml-auto">
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<select
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class="select select-bordered select-sm"
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bind:value={selectedProvider}
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disabled={chatProviders.length === 0}
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>
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{#each chatProviders as provider}
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<option value={provider.id}>{provider.label}</option>
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{/each}
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</select>
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</div>
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</div>
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<div class="flex-1 overflow-y-auto p-4 space-y-4" bind:this={messagesContainer}>
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{#if messages.length === 0 && !activeConversation}
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<div class="flex flex-col items-center justify-center h-full text-center">
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<svg
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class="w-16 h-16 text-primary opacity-40 mb-4"
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viewBox="0 0 24 24"
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fill="currentColor"
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aria-hidden="true"
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>
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<path d={mdiRobot}></path>
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</svg>
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<h3 class="text-2xl font-bold mb-2">{$t('chat.welcome_title')}</h3>
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<p class="text-base-content/60 max-w-md">{$t('chat.welcome_message')}</p>
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</div>
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{:else}
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{#each messages as msg}
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<div class="flex {msg.role === 'user' ? 'justify-end' : 'justify-start'}">
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{#if msg.role === 'tool'}
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<div class="max-w-2xl w-full">
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<div class="bg-base-200 rounded-lg p-3 text-xs">
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<div class="font-semibold mb-1 text-primary">🔧 {msg.name}</div>
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<pre class="whitespace-pre-wrap overflow-x-auto">{msg.content}</pre>
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</div>
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</div>
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{:else}
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<div class="chat {msg.role === 'user' ? 'chat-end' : 'chat-start'}">
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<div
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class="chat-bubble {msg.role === 'user'
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? 'chat-bubble-primary'
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: 'chat-bubble-neutral'}"
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>
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<div class="whitespace-pre-wrap">{msg.content}</div>
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{#if msg.role === 'assistant' && isStreaming && msg.id === messages[messages.length - 1]?.id && !msg.content}
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<span class="loading loading-dots loading-sm"></span>
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{/if}
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</div>
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</div>
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{/if}
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</div>
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{/each}
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{/if}
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</div>
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<div class="p-4 border-t border-base-300">
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<div class="flex gap-2 max-w-4xl mx-auto">
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<textarea
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class="textarea textarea-bordered flex-1 resize-none"
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placeholder={$t('chat.input_placeholder')}
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bind:value={inputMessage}
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on:keydown={handleKeydown}
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rows="1"
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disabled={isStreaming}
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></textarea>
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<button
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class="btn btn-primary"
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on:click={sendMessage}
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disabled={isStreaming || !inputMessage.trim() || chatProviders.length === 0}
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title={$t('chat.send')}
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>
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{#if isStreaming}
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<span class="loading loading-spinner loading-sm"></span>
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{:else}
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<svg class="w-5 h-5" viewBox="0 0 24 24" fill="currentColor" aria-hidden="true">
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<path d={mdiSend}></path>
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</svg>
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{/if}
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</button>
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</div>
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</div>
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</div>
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</div>
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</div>
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</div>
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