feat(chat): add LLM-powered travel agent with multi-provider support
Implement a full chat-based travel agent using LiteLLM for multi-provider LLM support (OpenAI, Anthropic, Gemini, Ollama, Groq, Mistral, etc.). Backend: - New 'chat' Django app with ChatConversation and ChatMessage models - Streaming SSE endpoint via StreamingHttpResponse - 5 agent tools: search_places, list_trips, get_trip_details, add_to_itinerary, get_weather - LiteLLM client wrapper with per-user API key retrieval - System prompt with user preference context injection Frontend: - New /chat route with full-page chat UI (DaisyUI + Tailwind) - Collapsible conversation sidebar with CRUD - SSE streaming response display with tool call visualization - Provider selector dropdown - SSE proxy fix to stream text/event-stream without buffering - Navbar link and i18n keys
This commit is contained in:
@@ -3,6 +3,7 @@
|
||||
import { goto } from '$app/navigation';
|
||||
export let data: any;
|
||||
import type { SubmitFunction } from '@sveltejs/kit';
|
||||
import { mdiRobotOutline } from '@mdi/js';
|
||||
|
||||
import DotsHorizontal from '~icons/mdi/dots-horizontal';
|
||||
import Calendar from '~icons/mdi/calendar';
|
||||
@@ -111,7 +112,8 @@
|
||||
|
||||
type NavigationItem = {
|
||||
path: string;
|
||||
icon: any;
|
||||
icon?: any;
|
||||
iconPath?: string;
|
||||
label: string;
|
||||
external?: boolean;
|
||||
};
|
||||
@@ -120,6 +122,7 @@
|
||||
const navigationItems: NavigationItem[] = [
|
||||
{ path: '/locations', icon: MapMarker, label: 'locations.locations' },
|
||||
{ path: '/collections', icon: FormatListBulletedSquare, label: 'navbar.collections' },
|
||||
{ path: '/chat', iconPath: mdiRobotOutline, label: 'navbar.chat' },
|
||||
{ path: '/invites', icon: AccountMultiple, label: 'invites.title' },
|
||||
{ path: '/worldtravel', icon: Earth, label: 'navbar.worldtravel' },
|
||||
{ path: '/map', icon: MapIcon, label: 'navbar.map' },
|
||||
@@ -161,7 +164,13 @@
|
||||
class="btn btn-ghost justify-start gap-3 w-full text-left rounded-xl"
|
||||
class:btn-active={!item.external && $page.url.pathname === item.path}
|
||||
>
|
||||
<svelte:component this={item.icon} class="w-5 h-5" />
|
||||
{#if item.icon}
|
||||
<svelte:component this={item.icon} class="w-5 h-5" />
|
||||
{:else if item.iconPath}
|
||||
<svg class="w-5 h-5" viewBox="0 0 24 24" fill="currentColor" aria-hidden="true">
|
||||
<path d={item.iconPath}></path>
|
||||
</svg>
|
||||
{/if}
|
||||
{$t(item.label)}
|
||||
</a>
|
||||
</li>
|
||||
@@ -233,7 +242,13 @@
|
||||
class:bg-primary-10={!item.external && $page.url.pathname === item.path}
|
||||
class:text-primary={!item.external && $page.url.pathname === item.path}
|
||||
>
|
||||
<svelte:component this={item.icon} class="w-4 h-4" />
|
||||
{#if item.icon}
|
||||
<svelte:component this={item.icon} class="w-4 h-4" />
|
||||
{:else if item.iconPath}
|
||||
<svg class="w-4 h-4" viewBox="0 0 24 24" fill="currentColor" aria-hidden="true">
|
||||
<path d={item.iconPath}></path>
|
||||
</svg>
|
||||
{/if}
|
||||
<span class="hidden xl:inline">{$t(item.label)}</span>
|
||||
</a>
|
||||
</li>
|
||||
|
||||
@@ -1,6 +1,7 @@
|
||||
{
|
||||
"navbar": {
|
||||
"collections": "Collections",
|
||||
"chat": "Travel Agent",
|
||||
"map": "Map",
|
||||
"users": "Users",
|
||||
"search": "Search",
|
||||
@@ -31,6 +32,20 @@
|
||||
},
|
||||
"navigation": "Navigation"
|
||||
},
|
||||
"chat": {
|
||||
"title": "Travel Agent",
|
||||
"conversations": "Conversations",
|
||||
"new_conversation": "New Conversation",
|
||||
"untitled": "Untitled Conversation",
|
||||
"no_conversations": "No conversations yet. Start chatting!",
|
||||
"welcome_title": "Welcome to the Travel Agent",
|
||||
"welcome_message": "I can help you discover amazing places, plan your trips, and organize your itineraries. What would you like to explore?",
|
||||
"input_placeholder": "Ask me about travel destinations, plan a trip, or get recommendations...",
|
||||
"send": "Send",
|
||||
"delete_conversation": "Delete Conversation",
|
||||
"connection_error": "Connection error. Please try again.",
|
||||
"no_api_key": "No API key found. Please add one in Settings."
|
||||
},
|
||||
"about": {
|
||||
"about": "About",
|
||||
"license": "Licensed under the GPL-3.0 License.",
|
||||
|
||||
@@ -86,11 +86,20 @@ async function handleRequest(
|
||||
});
|
||||
}
|
||||
|
||||
const responseData = await response.arrayBuffer();
|
||||
// Create a new Headers object without the 'set-cookie' header
|
||||
const contentType = response.headers.get('content-type') || '';
|
||||
const cleanHeaders = new Headers(response.headers);
|
||||
cleanHeaders.delete('set-cookie');
|
||||
|
||||
// Stream SSE responses through without buffering
|
||||
if (contentType.includes('text/event-stream')) {
|
||||
return new Response(response.body, {
|
||||
status: response.status,
|
||||
headers: cleanHeaders
|
||||
});
|
||||
}
|
||||
|
||||
const responseData = await response.arrayBuffer();
|
||||
|
||||
return new Response(responseData, {
|
||||
status: response.status,
|
||||
headers: cleanHeaders
|
||||
|
||||
342
frontend/src/routes/chat/+page.svelte
Normal file
342
frontend/src/routes/chat/+page.svelte
Normal file
@@ -0,0 +1,342 @@
|
||||
<script lang="ts">
|
||||
import { onMount } from 'svelte';
|
||||
import { t } from 'svelte-i18n';
|
||||
import { mdiRobot, mdiSend, mdiPlus, mdiDelete, mdiMenu, mdiClose } from '@mdi/js';
|
||||
|
||||
type Provider = {
|
||||
value: string;
|
||||
label: string;
|
||||
};
|
||||
|
||||
type Conversation = {
|
||||
id: string;
|
||||
title?: string;
|
||||
};
|
||||
|
||||
type ChatMessage = {
|
||||
id: string;
|
||||
role: 'user' | 'assistant' | 'tool';
|
||||
content: string;
|
||||
name?: string;
|
||||
};
|
||||
|
||||
let conversations: Conversation[] = [];
|
||||
let activeConversation: Conversation | null = null;
|
||||
let messages: ChatMessage[] = [];
|
||||
let inputMessage = '';
|
||||
let isStreaming = false;
|
||||
let sidebarOpen = true;
|
||||
let streamingContent = '';
|
||||
|
||||
let selectedProvider = 'openai';
|
||||
const providers: Provider[] = [
|
||||
{ value: 'openai', label: 'OpenAI' },
|
||||
{ value: 'anthropic', label: 'Anthropic' },
|
||||
{ value: 'gemini', label: 'Google Gemini' },
|
||||
{ value: 'ollama', label: 'Ollama' },
|
||||
{ value: 'groq', label: 'Groq' },
|
||||
{ value: 'mistral', label: 'Mistral' },
|
||||
{ value: 'github_models', label: 'GitHub Models' },
|
||||
{ value: 'openrouter', label: 'OpenRouter' }
|
||||
];
|
||||
|
||||
onMount(loadConversations);
|
||||
|
||||
async function loadConversations() {
|
||||
const res = await fetch('/api/chat/conversations/');
|
||||
if (res.ok) {
|
||||
conversations = await res.json();
|
||||
}
|
||||
}
|
||||
|
||||
async function createConversation(): Promise<Conversation | null> {
|
||||
const res = await fetch('/api/chat/conversations/', {
|
||||
method: 'POST',
|
||||
headers: { 'Content-Type': 'application/json' },
|
||||
body: JSON.stringify({})
|
||||
});
|
||||
if (!res.ok) {
|
||||
return null;
|
||||
}
|
||||
|
||||
const conv: Conversation = await res.json();
|
||||
conversations = [conv, ...conversations];
|
||||
activeConversation = conv;
|
||||
messages = [];
|
||||
return conv;
|
||||
}
|
||||
|
||||
async function selectConversation(conv: Conversation) {
|
||||
activeConversation = conv;
|
||||
const res = await fetch(`/api/chat/conversations/${conv.id}/`);
|
||||
if (res.ok) {
|
||||
const data = await res.json();
|
||||
messages = data.messages || [];
|
||||
}
|
||||
}
|
||||
|
||||
async function deleteConversation(conv: Conversation) {
|
||||
await fetch(`/api/chat/conversations/${conv.id}/`, { method: 'DELETE' });
|
||||
conversations = conversations.filter((conversation) => conversation.id !== conv.id);
|
||||
if (activeConversation?.id === conv.id) {
|
||||
activeConversation = null;
|
||||
messages = [];
|
||||
}
|
||||
}
|
||||
|
||||
async function sendMessage() {
|
||||
if (!inputMessage.trim() || isStreaming) return;
|
||||
|
||||
let conversation = activeConversation;
|
||||
if (!conversation) {
|
||||
conversation = await createConversation();
|
||||
if (!conversation) return;
|
||||
}
|
||||
|
||||
const userMsg: ChatMessage = { role: 'user', content: inputMessage, id: crypto.randomUUID() };
|
||||
messages = [...messages, userMsg];
|
||||
const msgText = inputMessage;
|
||||
inputMessage = '';
|
||||
isStreaming = true;
|
||||
streamingContent = '';
|
||||
|
||||
const assistantMsg: ChatMessage = { role: 'assistant', content: '', id: crypto.randomUUID() };
|
||||
messages = [...messages, assistantMsg];
|
||||
|
||||
try {
|
||||
const res = await fetch(`/api/chat/conversations/${conversation.id}/send_message/`, {
|
||||
method: 'POST',
|
||||
headers: { 'Content-Type': 'application/json' },
|
||||
body: JSON.stringify({ message: msgText, provider: selectedProvider })
|
||||
});
|
||||
|
||||
if (!res.ok) {
|
||||
const err = await res.json();
|
||||
assistantMsg.content = err.error || $t('chat.connection_error');
|
||||
messages = [...messages];
|
||||
isStreaming = false;
|
||||
return;
|
||||
}
|
||||
|
||||
const reader = res.body?.getReader();
|
||||
const decoder = new TextDecoder();
|
||||
let buffer = '';
|
||||
|
||||
if (!reader) {
|
||||
isStreaming = false;
|
||||
return;
|
||||
}
|
||||
|
||||
while (true) {
|
||||
const { done, value } = await reader.read();
|
||||
if (done) break;
|
||||
|
||||
buffer += decoder.decode(value, { stream: true });
|
||||
const lines = buffer.split('\n');
|
||||
buffer = lines.pop() || '';
|
||||
|
||||
for (const line of lines) {
|
||||
if (!line.startsWith('data: ')) continue;
|
||||
const data = line.slice(6).trim();
|
||||
if (!data || data === '[DONE]') continue;
|
||||
|
||||
try {
|
||||
const parsed = JSON.parse(data);
|
||||
|
||||
if (parsed.error) {
|
||||
assistantMsg.content = parsed.error;
|
||||
messages = [...messages];
|
||||
break;
|
||||
}
|
||||
|
||||
if (parsed.content) {
|
||||
streamingContent += parsed.content;
|
||||
assistantMsg.content = streamingContent;
|
||||
messages = [...messages];
|
||||
}
|
||||
|
||||
if (parsed.tool_result) {
|
||||
const toolMsg: ChatMessage = {
|
||||
role: 'tool',
|
||||
content: JSON.stringify(parsed.tool_result, null, 2),
|
||||
name: parsed.tool_result.tool || 'tool',
|
||||
id: crypto.randomUUID()
|
||||
};
|
||||
|
||||
const idx = messages.findIndex((m) => m.id === assistantMsg.id);
|
||||
messages = [...messages.slice(0, idx), toolMsg, ...messages.slice(idx)];
|
||||
|
||||
streamingContent = '';
|
||||
assistantMsg.content = '';
|
||||
}
|
||||
} catch {
|
||||
// ignore malformed chunks
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
loadConversations();
|
||||
} catch {
|
||||
assistantMsg.content = $t('chat.connection_error');
|
||||
messages = [...messages];
|
||||
} finally {
|
||||
isStreaming = false;
|
||||
}
|
||||
}
|
||||
|
||||
function handleKeydown(e: KeyboardEvent) {
|
||||
if (e.key === 'Enter' && !e.shiftKey) {
|
||||
e.preventDefault();
|
||||
sendMessage();
|
||||
}
|
||||
}
|
||||
|
||||
let messagesContainer: HTMLElement;
|
||||
$: if (messages && messagesContainer) {
|
||||
setTimeout(() => {
|
||||
messagesContainer?.scrollTo({ top: messagesContainer.scrollHeight, behavior: 'smooth' });
|
||||
}, 50);
|
||||
}
|
||||
</script>
|
||||
|
||||
<svelte:head>
|
||||
<title>{$t('chat.title')} | Voyage</title>
|
||||
</svelte:head>
|
||||
|
||||
<div class="flex h-[calc(100vh-64px)]">
|
||||
<div class="w-72 bg-base-200 flex flex-col border-r border-base-300 {sidebarOpen ? '' : 'hidden'} lg:flex">
|
||||
<div class="p-3 flex items-center justify-between border-b border-base-300">
|
||||
<h2 class="text-lg font-semibold">{$t('chat.conversations')}</h2>
|
||||
<button class="btn btn-sm btn-ghost" on:click={createConversation} title={$t('chat.new_conversation')}>
|
||||
<svg class="w-5 h-5" viewBox="0 0 24 24" fill="currentColor" aria-hidden="true">
|
||||
<path d={mdiPlus}></path>
|
||||
</svg>
|
||||
</button>
|
||||
</div>
|
||||
<div class="flex-1 overflow-y-auto">
|
||||
{#each conversations as conv}
|
||||
<div
|
||||
class="w-full p-3 hover:bg-base-300 flex items-center gap-2 {activeConversation?.id === conv.id
|
||||
? 'bg-base-300'
|
||||
: ''}"
|
||||
>
|
||||
<button class="flex-1 text-left truncate text-sm" on:click={() => selectConversation(conv)}>
|
||||
{conv.title || $t('chat.untitled')}
|
||||
</button>
|
||||
<button
|
||||
class="btn btn-xs btn-ghost"
|
||||
on:click={() => deleteConversation(conv)}
|
||||
title={$t('chat.delete_conversation')}
|
||||
>
|
||||
<svg class="w-3.5 h-3.5" viewBox="0 0 24 24" fill="currentColor" aria-hidden="true">
|
||||
<path d={mdiDelete}></path>
|
||||
</svg>
|
||||
</button>
|
||||
</div>
|
||||
{/each}
|
||||
{#if conversations.length === 0}
|
||||
<p class="p-4 text-sm opacity-60">{$t('chat.no_conversations')}</p>
|
||||
{/if}
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<div class="flex-1 flex flex-col">
|
||||
<div class="p-3 border-b border-base-300 flex items-center gap-3">
|
||||
<button class="btn btn-sm btn-ghost lg:hidden" on:click={() => (sidebarOpen = !sidebarOpen)}>
|
||||
{#if sidebarOpen}
|
||||
<svg class="w-5 h-5" viewBox="0 0 24 24" fill="currentColor" aria-hidden="true">
|
||||
<path d={mdiClose}></path>
|
||||
</svg>
|
||||
{:else}
|
||||
<svg class="w-5 h-5" viewBox="0 0 24 24" fill="currentColor" aria-hidden="true">
|
||||
<path d={mdiMenu}></path>
|
||||
</svg>
|
||||
{/if}
|
||||
</button>
|
||||
<svg class="w-6 h-6 text-primary" viewBox="0 0 24 24" fill="currentColor" aria-hidden="true">
|
||||
<path d={mdiRobot}></path>
|
||||
</svg>
|
||||
<h1 class="text-lg font-semibold">{$t('chat.title')}</h1>
|
||||
<div class="ml-auto">
|
||||
<select class="select select-bordered select-sm" bind:value={selectedProvider}>
|
||||
{#each providers as provider}
|
||||
<option value={provider.value}>{provider.label}</option>
|
||||
{/each}
|
||||
</select>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<div class="flex-1 overflow-y-auto p-4 space-y-4" bind:this={messagesContainer}>
|
||||
{#if messages.length === 0 && !activeConversation}
|
||||
<div class="flex flex-col items-center justify-center h-full text-center">
|
||||
<svg
|
||||
class="w-16 h-16 text-primary opacity-40 mb-4"
|
||||
viewBox="0 0 24 24"
|
||||
fill="currentColor"
|
||||
aria-hidden="true"
|
||||
>
|
||||
<path d={mdiRobot}></path>
|
||||
</svg>
|
||||
<h2 class="text-2xl font-bold mb-2">{$t('chat.welcome_title')}</h2>
|
||||
<p class="text-base-content/60 max-w-md">{$t('chat.welcome_message')}</p>
|
||||
</div>
|
||||
{:else}
|
||||
{#each messages as msg}
|
||||
<div class="flex {msg.role === 'user' ? 'justify-end' : 'justify-start'}">
|
||||
{#if msg.role === 'tool'}
|
||||
<div class="max-w-2xl w-full">
|
||||
<div class="bg-base-200 rounded-lg p-3 text-xs">
|
||||
<div class="font-semibold mb-1 text-primary">🔧 {msg.name}</div>
|
||||
<pre class="whitespace-pre-wrap overflow-x-auto">{msg.content}</pre>
|
||||
</div>
|
||||
</div>
|
||||
{:else}
|
||||
<div class="chat {msg.role === 'user' ? 'chat-end' : 'chat-start'}">
|
||||
<div
|
||||
class="chat-bubble {msg.role === 'user'
|
||||
? 'chat-bubble-primary'
|
||||
: 'chat-bubble-neutral'}"
|
||||
>
|
||||
<div class="whitespace-pre-wrap">{msg.content}</div>
|
||||
{#if msg.role === 'assistant' &&
|
||||
isStreaming &&
|
||||
msg.id === messages[messages.length - 1]?.id &&
|
||||
!msg.content}
|
||||
<span class="loading loading-dots loading-sm"></span>
|
||||
{/if}
|
||||
</div>
|
||||
</div>
|
||||
{/if}
|
||||
</div>
|
||||
{/each}
|
||||
{/if}
|
||||
</div>
|
||||
|
||||
<div class="p-4 border-t border-base-300">
|
||||
<div class="flex gap-2 max-w-4xl mx-auto">
|
||||
<textarea
|
||||
class="textarea textarea-bordered flex-1 resize-none"
|
||||
placeholder={$t('chat.input_placeholder')}
|
||||
bind:value={inputMessage}
|
||||
on:keydown={handleKeydown}
|
||||
rows="1"
|
||||
disabled={isStreaming}
|
||||
></textarea>
|
||||
<button
|
||||
class="btn btn-primary"
|
||||
on:click={sendMessage}
|
||||
disabled={isStreaming || !inputMessage.trim()}
|
||||
title={$t('chat.send')}
|
||||
>
|
||||
{#if isStreaming}
|
||||
<span class="loading loading-spinner loading-sm"></span>
|
||||
{:else}
|
||||
<svg class="w-5 h-5" viewBox="0 0 24 24" fill="currentColor" aria-hidden="true">
|
||||
<path d={mdiSend}></path>
|
||||
</svg>
|
||||
{/if}
|
||||
</button>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
Reference in New Issue
Block a user