chat agent

frontend/src/main.js

@@ -16,7 +16,8 @@ const state = {
     selectedRunId: null,
     currentView: 'dashboard', // 'dashboard' or 'task'
     isEditing: false,
-    isAuthenticated: false
+    isAuthenticated: false,
+    chatMessages: []
 };
 // DOM elements
 const loginOverlay = document.getElementById('login-overlay');
@@ -53,6 +54,11 @@ const schedulePresets = document.getElementById('schedule-presets');
 const toggleCustomCronBtn = document.getElementById('toggle-custom-cron');
 const customCronContainer = document.getElementById('custom-cron-container');
 const presetBtns = document.querySelectorAll('.btn-preset');
+const chatMessagesEl = document.getElementById('chat-messages');
+const chatForm = document.getElementById('chat-form');
+const chatInput = document.getElementById('chat-input');
+const clearChatBtn = document.getElementById('clear-chat-btn');
+const chatSendBtn = document.getElementById('chat-send-btn');
 
 function updateState(newState) {
     Object.assign(state, newState);
@@ -89,6 +95,7 @@ function renderApp() {
 
     if (state.currentView === 'dashboard') {
         fetchRecentRuns();
+        renderChat();
     } else if (state.selectedTaskId) {
         const task = state.tasks.find(t => t.id === state.selectedTaskId);
         if (task) {
@@ -354,6 +361,62 @@ function escapeHtml(text) {
     return div.innerHTML;
 }
 
+function renderChat() {
+    if (!chatMessagesEl) return;
+
+    if (state.chatMessages.length === 0) {
+        chatMessagesEl.innerHTML = `
+            <div class="chat-empty-state">
+                <p>Start a conversation with the assistant.</p>
+            </div>
+        `;
+        return;
+    }
+
+    chatMessagesEl.innerHTML = state.chatMessages
+        .map(msg => `
+            <div class="chat-message ${msg.role}">
+                ${escapeHtml(msg.content)}
+            </div>
+        `)
+        .join('');
+
+    chatMessagesEl.scrollTop = chatMessagesEl.scrollHeight;
+}
+
+async function sendChatMessage(text) {
+    const userMessage = { role: 'user', content: text };
+    state.chatMessages.push(userMessage);
+    renderChat();
+
+    chatInput.value = '';
+    chatInput.disabled = true;
+    chatSendBtn.disabled = true;
+
+    try {
+        const response = await fetchWithAuth(`${API_URL}/chat`, {
+            method: 'POST',
+            headers: { 'Content-Type': 'application/json' },
+            body: JSON.stringify({ messages: state.chatMessages })
+        });
+
+        if (!response.ok) throw new Error('Chat API failed');
+
+        const result = await response.json();
+        state.chatMessages.push(result.message);
+        renderChat();
+    } catch (error) {
+        console.error('Chat error:', error);
+        showToast('Failed to get chat response.', 'error');
+        state.chatMessages.push({ role: 'assistant', content: 'Sorry, I encountered an error. Please try again.' });
+        renderChat();
+    } finally {
+        chatInput.disabled = false;
+        chatSendBtn.disabled = false;
+        chatInput.focus();
+    }
+}
+
 // Event Listeners
 rerunBtn.addEventListener('click', async () => {
     if (!state.selectedTaskId) return;
@@ -447,6 +510,19 @@ toggleCustomCronBtn.addEventListener('click', () => {
     customCronContainer.classList.toggle('hidden');
 });
 
+chatForm.addEventListener('submit', (e) => {
+    e.preventDefault();
+    const text = chatInput.value.trim();
+    if (text) {
+        sendChatMessage(text);
+    }
+});
+
+clearChatBtn.addEventListener('click', () => {
+    state.chatMessages = [];
+    renderChat();
+});
+
 cronInput.addEventListener('input', () => {
     // If user types manually, update presets active state
     updateScheduleUI(cronInput.value);