co-mono/packages/web-ui/example/src/main.ts

421 lines
12 KiB
TypeScript

import "@mariozechner/mini-lit/dist/ThemeToggle.js";
import { Agent, type AgentMessage } from "@mariozechner/pi-agent-core";
import { getModel } from "@mariozechner/pi-ai";
import {
type AgentState,
ApiKeyPromptDialog,
AppStorage,
ChatPanel,
CustomProvidersStore,
createJavaScriptReplTool,
IndexedDBStorageBackend,
// PersistentStorageDialog, // TODO: Fix - currently broken
ProviderKeysStore,
ProvidersModelsTab,
ProxyTab,
SessionListDialog,
SessionsStore,
SettingsDialog,
SettingsStore,
setAppStorage,
} from "@mariozechner/pi-web-ui";
import { html, render } from "lit";
import { Bell, History, Plus, Settings } from "lucide";
import "./app.css";
import { icon } from "@mariozechner/mini-lit";
import { Button } from "@mariozechner/mini-lit/dist/Button.js";
import { Input } from "@mariozechner/mini-lit/dist/Input.js";
import { createSystemNotification, customConvertToLlm, registerCustomMessageRenderers } from "./custom-messages.js";
// Register custom message renderers
registerCustomMessageRenderers();
// Create stores
const settings = new SettingsStore();
const providerKeys = new ProviderKeysStore();
const sessions = new SessionsStore();
const customProviders = new CustomProvidersStore();
// Gather configs
const configs = [
settings.getConfig(),
SessionsStore.getMetadataConfig(),
providerKeys.getConfig(),
customProviders.getConfig(),
sessions.getConfig(),
];
// Create backend
const backend = new IndexedDBStorageBackend({
dbName: "pi-web-ui-example",
version: 2, // Incremented for custom-providers store
stores: configs,
});
// Wire backend to stores
settings.setBackend(backend);
providerKeys.setBackend(backend);
customProviders.setBackend(backend);
sessions.setBackend(backend);
// Create and set app storage
const storage = new AppStorage(settings, providerKeys, sessions, customProviders, backend);
setAppStorage(storage);
let currentSessionId: string | undefined;
let currentTitle = "";
let isEditingTitle = false;
let agent: Agent;
let chatPanel: ChatPanel;
let agentUnsubscribe: (() => void) | undefined;
const generateTitle = (messages: AgentMessage[]): string => {
const firstUserMsg = messages.find((m) => m.role === "user" || m.role === "user-with-attachments");
if (!firstUserMsg || (firstUserMsg.role !== "user" && firstUserMsg.role !== "user-with-attachments")) return "";
let text = "";
const content = firstUserMsg.content;
if (typeof content === "string") {
text = content;
} else {
const textBlocks = content.filter((c: any) => c.type === "text");
text = textBlocks.map((c: any) => c.text || "").join(" ");
}
text = text.trim();
if (!text) return "";
const sentenceEnd = text.search(/[.!?]/);
if (sentenceEnd > 0 && sentenceEnd <= 50) {
return text.substring(0, sentenceEnd + 1);
}
return text.length <= 50 ? text : `${text.substring(0, 47)}...`;
};
const shouldSaveSession = (messages: AgentMessage[]): boolean => {
const hasUserMsg = messages.some((m: any) => m.role === "user" || m.role === "user-with-attachments");
const hasAssistantMsg = messages.some((m: any) => m.role === "assistant");
return hasUserMsg && hasAssistantMsg;
};
const saveSession = async () => {
if (!storage.sessions || !currentSessionId || !agent || !currentTitle) return;
const state = agent.state;
if (!shouldSaveSession(state.messages)) return;
try {
// Create session data
const sessionData = {
id: currentSessionId,
title: currentTitle,
model: state.model!,
thinkingLevel: state.thinkingLevel,
messages: state.messages,
createdAt: new Date().toISOString(),
lastModified: new Date().toISOString(),
};
// Create session metadata
const metadata = {
id: currentSessionId,
title: currentTitle,
createdAt: sessionData.createdAt,
lastModified: sessionData.lastModified,
messageCount: state.messages.length,
usage: {
input: 0,
output: 0,
cacheRead: 0,
cacheWrite: 0,
totalTokens: 0,
cost: {
input: 0,
output: 0,
cacheRead: 0,
cacheWrite: 0,
total: 0,
},
},
modelId: state.model?.id || null,
thinkingLevel: state.thinkingLevel,
preview: generateTitle(state.messages),
};
await storage.sessions.save(sessionData, metadata);
} catch (err) {
console.error("Failed to save session:", err);
}
};
const updateUrl = (sessionId: string) => {
const url = new URL(window.location.href);
url.searchParams.set("session", sessionId);
window.history.replaceState({}, "", url);
};
const createAgent = async (initialState?: Partial<AgentState>) => {
if (agentUnsubscribe) {
agentUnsubscribe();
}
agent = new Agent({
initialState: initialState || {
systemPrompt: `You are a helpful AI assistant with access to various tools.
Available tools:
- JavaScript REPL: Execute JavaScript code in a sandboxed browser environment (can do calculations, get time, process data, create visualizations, etc.)
- Artifacts: Create interactive HTML, SVG, Markdown, and text artifacts
Feel free to use these tools when needed to provide accurate and helpful responses.`,
model: getModel("anthropic", "claude-sonnet-4-5-20250929"),
thinkingLevel: "off",
messages: [],
tools: [],
},
// Custom transformer: convert custom messages to LLM-compatible format
convertToLlm: customConvertToLlm,
});
agentUnsubscribe = agent.subscribe((event: any) => {
if (event.type === "state-update") {
const messages = event.state.messages;
// Generate title after first successful response
if (!currentTitle && shouldSaveSession(messages)) {
currentTitle = generateTitle(messages);
}
// Create session ID on first successful save
if (!currentSessionId && shouldSaveSession(messages)) {
currentSessionId = crypto.randomUUID();
updateUrl(currentSessionId);
}
// Auto-save
if (currentSessionId) {
saveSession();
}
renderApp();
}
});
await chatPanel.setAgent(agent, {
onApiKeyRequired: async (provider: string) => {
return await ApiKeyPromptDialog.prompt(provider);
},
toolsFactory: (_agent, _agentInterface, _artifactsPanel, runtimeProvidersFactory) => {
// Create javascript_repl tool with access to attachments + artifacts
const replTool = createJavaScriptReplTool();
replTool.runtimeProvidersFactory = runtimeProvidersFactory;
return [replTool];
},
});
};
const loadSession = async (sessionId: string): Promise<boolean> => {
if (!storage.sessions) return false;
const sessionData = await storage.sessions.get(sessionId);
if (!sessionData) {
console.error("Session not found:", sessionId);
return false;
}
currentSessionId = sessionId;
const metadata = await storage.sessions.getMetadata(sessionId);
currentTitle = metadata?.title || "";
await createAgent({
model: sessionData.model,
thinkingLevel: sessionData.thinkingLevel,
messages: sessionData.messages,
tools: [],
});
updateUrl(sessionId);
renderApp();
return true;
};
const newSession = () => {
const url = new URL(window.location.href);
url.search = "";
window.location.href = url.toString();
};
// ============================================================================
// RENDER
// ============================================================================
const renderApp = () => {
const app = document.getElementById("app");
if (!app) return;
const appHtml = html`
<div class="w-full h-screen flex flex-col bg-background text-foreground overflow-hidden">
<!-- Header -->
<div class="flex items-center justify-between border-b border-border shrink-0">
<div class="flex items-center gap-2 px-4 py-">
${Button({
variant: "ghost",
size: "sm",
children: icon(History, "sm"),
onClick: () => {
SessionListDialog.open(
async (sessionId) => {
await loadSession(sessionId);
},
(deletedSessionId) => {
// Only reload if the current session was deleted
if (deletedSessionId === currentSessionId) {
newSession();
}
},
);
},
title: "Sessions",
})}
${Button({
variant: "ghost",
size: "sm",
children: icon(Plus, "sm"),
onClick: newSession,
title: "New Session",
})}
${
currentTitle
? isEditingTitle
? html`<div class="flex items-center gap-2">
${Input({
type: "text",
value: currentTitle,
className: "text-sm w-64",
onChange: async (e: Event) => {
const newTitle = (e.target as HTMLInputElement).value.trim();
if (newTitle && newTitle !== currentTitle && storage.sessions && currentSessionId) {
await storage.sessions.updateTitle(currentSessionId, newTitle);
currentTitle = newTitle;
}
isEditingTitle = false;
renderApp();
},
onKeyDown: async (e: KeyboardEvent) => {
if (e.key === "Enter") {
const newTitle = (e.target as HTMLInputElement).value.trim();
if (newTitle && newTitle !== currentTitle && storage.sessions && currentSessionId) {
await storage.sessions.updateTitle(currentSessionId, newTitle);
currentTitle = newTitle;
}
isEditingTitle = false;
renderApp();
} else if (e.key === "Escape") {
isEditingTitle = false;
renderApp();
}
},
})}
</div>`
: html`<button
class="px-2 py-1 text-sm text-foreground hover:bg-secondary rounded transition-colors"
@click=${() => {
isEditingTitle = true;
renderApp();
requestAnimationFrame(() => {
const input = app?.querySelector('input[type="text"]') as HTMLInputElement;
if (input) {
input.focus();
input.select();
}
});
}}
title="Click to edit title"
>
${currentTitle}
</button>`
: html`<span class="text-base font-semibold text-foreground">Pi Web UI Example</span>`
}
</div>
<div class="flex items-center gap-1 px-2">
${Button({
variant: "ghost",
size: "sm",
children: icon(Bell, "sm"),
onClick: () => {
// Demo: Inject custom message
if (agent) {
agent.appendMessage(
createSystemNotification(
"This is a custom message! It appears in the UI but is never sent to the LLM.",
),
);
}
},
title: "Demo: Add Custom Notification",
})}
<theme-toggle></theme-toggle>
${Button({
variant: "ghost",
size: "sm",
children: icon(Settings, "sm"),
onClick: () => SettingsDialog.open([new ProvidersModelsTab(), new ProxyTab()]),
title: "Settings",
})}
</div>
</div>
<!-- Chat Panel -->
${chatPanel}
</div>
`;
render(appHtml, app);
};
// ============================================================================
// INIT
// ============================================================================
async function initApp() {
const app = document.getElementById("app");
if (!app) throw new Error("App container not found");
// Show loading
render(
html`
<div class="w-full h-screen flex items-center justify-center bg-background text-foreground">
<div class="text-muted-foreground">Loading...</div>
</div>
`,
app,
);
// TODO: Fix PersistentStorageDialog - currently broken
// Request persistent storage
// if (storage.sessions) {
// await PersistentStorageDialog.request();
// }
// Create ChatPanel
chatPanel = new ChatPanel();
// Check for session in URL
const urlParams = new URLSearchParams(window.location.search);
const sessionIdFromUrl = urlParams.get("session");
if (sessionIdFromUrl) {
const loaded = await loadSession(sessionIdFromUrl);
if (!loaded) {
// Session doesn't exist, redirect to new session
newSession();
return;
}
} else {
await createAgent();
}
renderApp();
}
initApp();