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/// <reference lib="dom" />
// Use global types from JSDOM setup
type KeyboardEvent = globalThis.KeyboardEvent;
type HTMLTextAreaElement = globalThis.HTMLTextAreaElement;
type HTMLButtonElement = globalThis.HTMLButtonElement;
const DEFAULT_VAULT_SEARCH_LIMIT = 3;
const MAX_MESSAGE_HISTORY = 50;
import {
PluginSettings,
OllamaMessage,
ChatMessage,
OllamaTool,
ToolCall,
ToolResult,
} from './types';
import { OllamaClient } from './ollama-client';
import { VaultIndexer } from './vault-indexer';
import { ToolExecutor } from './tool-executor';
import { ErrorHandler } from './error-handler';
export class ChatView extends ItemView {
private settings: PluginSettings;
private messages: ChatMessage[] = [];
private ollamaClient: OllamaClient;
private vaultIndexer: VaultIndexer;
private toolExecutor: ToolExecutor;
private lastMessageEl: HTMLElement | null = null;
private newChatButton: HTMLElement | null = null;
private sendButton: HTMLElement | null = null;
private inputEl: HTMLElement | null = null;
private chatContainer: HTMLElement | null = null;
private sendButtonClickHandler: (() => Promise<void>) | null = null;
private inputKeyDownHandler: ((e: KeyboardEvent) => Promise<void>) | null = null;
private newChatButtonClickHandler: (() => void) | null = null;
private listenersAttached = false;
constructor(leaf: WorkspaceLeaf, settings: PluginSettings) {
super(leaf);
this.settings = settings;
this.ollamaClient = new OllamaClient(settings.ollamaUrl, settings.model);
this.vaultIndexer = new VaultIndexer(this.app.vault);
this.toolExecutor = new ToolExecutor(this.app.vault, this.app);
}
getViewType(): string {
return 'ollama-chat-view';
}
getDisplayText(): string {
return 'Ollama Chat';
}
async onOpen() {
await this.render();
this.removeEventListeners(); // Clean up any existing listeners before reattaching
this.setupEventListeners();
}
async onClose() {
this.ollamaClient.cancelStream();
this.removeEventListeners();
this.cleanupStreamingResources();
this.lastMessageEl = null;
this.sendButton = null;
this.inputEl = null;
this.chatContainer = null;
}
private cleanupStreamingResources(): void {
// Ensure any ongoing streaming is properly cleaned up
if (this.lastMessageEl && this.lastMessageEl.parentElement) {
this.lastMessageEl.parentElement.removeChild(this.lastMessageEl);
this.lastMessageEl = null;
}
}
async render() {
const container =
this.chatContainer || this.contentEl.createEl('div', { cls: 'ollama-chat-container' });
this.chatContainer = container;
const inputContainer =
this.contentEl.querySelector('.ollama-input-container') ||
this.contentEl.createEl('div', { cls: 'ollama-input-container' });
if (!this.inputEl) {
this.inputEl = inputContainer.createEl('textarea', { cls: 'ollama-input' });
}
if (!this.sendButton) {
this.sendButton = inputContainer.createEl('button', {
cls: 'ollama-send-button',
}) as HTMLButtonElement;
(this.sendButton as HTMLButtonElement).textContent = 'Send';
}
if (!this.newChatButton) {
const newChatContainer =
this.contentEl.querySelector('.ollama-new-chat') ||
this.contentEl.createEl('div', { cls: 'ollama-new-chat' });
this.newChatButton = newChatContainer.createEl('button', {
cls: 'ollama-new-chat-button',
}) as HTMLButtonElement;
(this.newChatButton as HTMLButtonElement).textContent = '🔄 New Chat';
(this.newChatButton as HTMLButtonElement).title = 'Start a new conversation';
}
// Create immutable snapshot for rendering
const messagesSnapshot = [...this.messages];
// Only render messages that are not currently streaming
const nonStreamingMessages = messagesSnapshot.filter((msg) => !msg.isStreaming);
// Differential update: only update messages that have changed
const existingMessages = container.querySelectorAll('.ollama-message');
const existingIds = Array.from(existingMessages).map((el) => el.getAttribute('data-msg-id'));
for (const msg of nonStreamingMessages) {
const existingEl = container.querySelector(
`.ollama-message[data-msg-id="${msg.id}"]`
) as HTMLElement | null;
if (existingEl) {
existingEl.textContent = msg.content;
} else {
const messageEl = container.createEl('div', {
cls: `ollama-message ${msg.role}`,
}) as HTMLElement;
messageEl.setAttribute('data-msg-id', msg.id);
messageEl.textContent = msg.content;
}
}
// Remove messages that are no longer in the array
for (const el of Array.from(existingMessages)) {
const id = el.getAttribute('data-msg-id');
if (!id || !nonStreamingMessages.some((m) => m.id === id)) {
el.remove();
}
}
// Re-attach streaming message if it exists
const streamingMessage = messagesSnapshot.find((msg) => msg.isStreaming);
Iif (streamingMessage && this.lastMessageEl) {
const existingStreamingEl = container.querySelector(
`.ollama-message[data-msg-id="${streamingMessage.id}"]`
);
Iif (!existingStreamingEl) {
container.appendChild(this.lastMessageEl);
}
}
}
private setupEventListeners(): void {
Iif (!this.sendButton || !this.inputEl || this.listenersAttached) return;
// Create handlers if they don't exist
if (!this.sendButtonClickHandler) {
this.sendButtonClickHandler = async () => {
Iif (!this.inputEl) return;
await this.handleUserInput((this.inputEl as HTMLTextAreaElement).value);
(this.inputEl as HTMLTextAreaElement).value = '';
};
}
if (!this.inputKeyDownHandler) {
this.inputKeyDownHandler = async (e: KeyboardEvent) => {
Iif (!this.inputEl || e.key !== 'Enter' || e.shiftKey) return;
e.preventDefault();
await this.handleUserInput((this.inputEl as HTMLTextAreaElement).value);
(this.inputEl as HTMLTextAreaElement).value = '';
};
}
// Add event listeners
(this.sendButton as HTMLButtonElement).addEventListener('click', this.sendButtonClickHandler!);
(this.inputEl as HTMLTextAreaElement).addEventListener('keydown', this.inputKeyDownHandler!);
if (this.newChatButton) {
if (!this.newChatButtonClickHandler) {
this.newChatButtonClickHandler = () => this.clearConversation();
}
(this.newChatButton as HTMLButtonElement).addEventListener(
'click',
this.newChatButtonClickHandler!
);
}
this.listenersAttached = true;
}
private removeEventListeners(): void {
if (this.sendButton && this.sendButtonClickHandler) {
(this.sendButton as HTMLButtonElement).removeEventListener(
'click',
this.sendButtonClickHandler!
);
}
if (this.inputEl && this.inputKeyDownHandler) {
(this.inputEl as HTMLTextAreaElement).removeEventListener(
'keydown',
this.inputKeyDownHandler!
);
}
if (this.newChatButton && this.newChatButtonClickHandler) {
(this.newChatButton as HTMLButtonElement).removeEventListener(
'click',
this.newChatButtonClickHandler!
);
}
this.listenersAttached = false;
}
private clearConversation(): void {
// Create new array to ensure immutability
this.messages = [];
this.lastMessageEl = null;
this.render();
new Notice('Conversation cleared');
}
private updateMessageById(id: string, partial: Partial<ChatMessage>): boolean {
const index = this.messages.findIndex((m) => m.id === id);
Iif (index < 0) return false;
this.messages = [
...this.messages.slice(0, index),
{ ...this.messages[index], ...partial },
...this.messages.slice(index + 1),
];
return true;
}
private async updateLastMessage(content: string) {
const streamingMessage = this.messages.find((msg) => msg.isStreaming);
if (streamingMessage && !this.lastMessageEl) {
this.lastMessageEl = this.contentEl.createEl('div', {
cls: `ollama-message assistant`,
}) as HTMLElement;
this.lastMessageEl.setAttribute('data-msg-id', streamingMessage.id);
}
if (this.lastMessageEl) {
this.lastMessageEl.textContent = content;
}
}
private async handleUserInput(content: string) {
Iif (!this.sendButton || !this.inputEl) return;
(this.sendButton as HTMLButtonElement).disabled = true;
try {
// Guard against empty messages
const userMessage = content.trim();
if (!userMessage) return;
// Search vault using user message as query
const entries = await this.vaultIndexer.searchVault(userMessage, DEFAULT_VAULT_SEARCH_LIMIT);
let context = entries.map((e) => `### ${e.title}\n${e.content}`).join('\n\n');
// Cap context size to prevent prompt bloat with large vaults
const MAX_CONTEXT_LENGTH = 4000;
Iif (context.length > MAX_CONTEXT_LENGTH) {
context = context.substring(0, MAX_CONTEXT_LENGTH) + '\n\n... (truncated)';
}
const systemMessage: OllamaMessage = {
role: 'system',
content: 'You are a helpful assistant.',
};
const userMessageWithContext: OllamaMessage = {
role: 'user',
content: `${context}\n\n${userMessage}`,
};
const messages: OllamaMessage[] = [
systemMessage,
...this.messages.map(
(m) =>
({
role: m.role,
content: m.content,
tool_calls: m.tool_calls,
}) as OllamaMessage
),
userMessageWithContext,
];
const tools: OllamaTool[] = [
{
type: 'function',
function: {
name: 'create_file',
description: 'Create a new file in the vault',
parameters: {
type: 'object' as const,
properties: {
path: { type: 'string' as const },
content: { type: 'string' as const },
},
required: ['path', 'content'],
},
},
},
];
const messageId = `${Date.now()}-${Math.random().toString(36).slice(2, 8)}`;
const userMessageId = messageId;
const assistantMessageId = `${messageId}-assistant`;
// Store user message in conversation history
const userChatMessage: ChatMessage = {
id: userMessageId,
role: 'user' as const,
content: userMessage,
timestamp: Date.now(),
};
const assistantMessage: ChatMessage = {
id: assistantMessageId,
role: 'assistant' as const,
content: '',
timestamp: Date.now(),
isStreaming: true,
};
// Update messages immutably
this.messages = [...this.messages, userChatMessage, assistantMessage];
await this.render();
const stream = await this.ollamaClient.streamChat(messages, tools);
let fullResponse = '';
let toolCalls: ToolCall[] = [];
let chunkCount = 0;
const MAX_STREAM_CHUNKS = 1000;
const maxChunks = MAX_STREAM_CHUNKS;
try {
for await (const chunk of stream) {
chunkCount++;
Iif (chunkCount > maxChunks) {
throw new Error('Response too long, stopped streaming');
}
if (chunk.content) {
fullResponse += chunk.content;
}
if (chunk.tool_calls) {
toolCalls = toolCalls.concat(chunk.tool_calls);
}
await this.updateLastMessage(fullResponse);
}
} finally {
// Clean up streaming resources regardless of outcome
this.cleanupStreamingResources();
}
// Update the assistant message with the full response immutably
Iif (
!this.updateMessageById(assistantMessageId, {
content: fullResponse,
tool_calls: toolCalls,
})
) {
throw new Error('Assistant message not found');
}
// Process tool calls with proper follow-up context
if (toolCalls.length > 0) {
// Validate tool calls before processing
const MAX_TOOL_CALLS = 10;
Iif (toolCalls.length > MAX_TOOL_CALLS) {
throw new Error(`Too many tool calls (max ${MAX_TOOL_CALLS})`);
}
// Collect all tool results using allSettled to support partial results
const settledResults = await Promise.allSettled(
toolCalls.map((call) => this.toolExecutor.handleToolCall(call))
);
let toolResults: ToolResult[] = [];
for (const result of settledResults) {
Iif (result.status === 'fulfilled') {
toolResults.push(result.value);
} else {
// Use centralized error handler for tool errors
ErrorHandler.handleError(result.reason, 'ChatView.handleUserInput');
}
}
// Create follow-up messages including the assistant's tool calls and results
const followUpMessages: OllamaMessage[] = [
...messages,
{ role: 'assistant' as const, content: fullResponse, tool_calls: toolCalls },
...toolResults.map((result) => ({
role: 'tool' as const,
content: JSON.stringify(result),
})),
];
const followUp = await this.ollamaClient.chat(followUpMessages, tools);
fullResponse += followUp.content;
await this.updateLastMessage(fullResponse);
// Update the assistant message with the final response immutably
this.updateMessageById(assistantMessageId, { content: fullResponse, isStreaming: false });
}
// Update last message immutably — only if no tool calls were processed
if (toolCalls.length === 0) {
const lastMessageIndex = this.messages.length - 1;
if (lastMessageIndex >= 0) {
const lastMessage = { ...this.messages[lastMessageIndex], isStreaming: false };
this.messages = [...this.messages.slice(0, lastMessageIndex), lastMessage];
}
}
// Limit conversation history to prevent memory issues
if (this.messages.length > MAX_MESSAGE_HISTORY) {
this.messages = this.messages.slice(-MAX_MESSAGE_HISTORY);
}
await this.render();
} catch (error) {
// Use centralized error handler
ErrorHandler.handleError(error, 'ChatView.handleUserInput');
this.cleanupStreamingResources();
} finally {
if (this.sendButton) {
(this.sendButton as HTMLButtonElement).disabled = false;
}
}
}
}
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