extract assistant frontend api client

public/js/assistant/api.js

@@ -0,0 +1,74 @@
+function authHeaders() {
+  return window.getAuthHeaders ? window.getAuthHeaders() : { 'Content-Type': 'application/json' };
+}
+
+function parseJsonWithStatus(response) {
+  return response.json().catch(function () { return {}; }).then(function(data) {
+    data._status = response.status;
+    return data;
+  });
+}
+
+export function fetchAssistantStatus() {
+  return fetch('/api/clinical-assistant/status', { headers: authHeaders(), credentials: 'same-origin' })
+    .then(function(r) { return r.json(); });
+}
+
+export function fetchAssistantExamples() {
+  return fetch('/api/clinical-assistant/examples', { headers: authHeaders(), credentials: 'same-origin' })
+    .then(function(r) { return r.json(); });
+}
+
+export function openAssistantStream(payload) {
+  return fetch('/api/clinical-assistant/chat/stream', {
+    method: 'POST',
+    headers: authHeaders(),
+    credentials: 'same-origin',
+    body: JSON.stringify(payload)
+  });
+}
+
+export function fetchAssistantChat(payload) {
+  return fetch('/api/clinical-assistant/chat', {
+    method: 'POST',
+    headers: authHeaders(),
+    credentials: 'same-origin',
+    body: JSON.stringify(payload)
+  }).then(parseJsonWithStatus);
+}
+
+export function requestAssistantImage(prompt) {
+  return fetch('/api/clinical-assistant/image', {
+    method: 'POST',
+    headers: authHeaders(),
+    credentials: 'same-origin',
+    body: JSON.stringify({ prompt: prompt })
+  }).then(function(r) { return r.json(); });
+}
+
+export function saveAssistantChat(payload) {
+  return fetch('/api/clinical-assistant/chats', {
+    method: 'POST',
+    headers: authHeaders(),
+    credentials: 'same-origin',
+    body: JSON.stringify(payload)
+  }).then(parseJsonWithStatus);
+}
+
+export function fetchSavedAssistantChats() {
+  return fetch('/api/clinical-assistant/chats', { headers: authHeaders(), credentials: 'same-origin' })
+    .then(function(r) { return r.json(); });
+}
+
+export function fetchSavedAssistantChat(id) {
+  return fetch('/api/clinical-assistant/chats/' + encodeURIComponent(id), { headers: authHeaders(), credentials: 'same-origin' })
+    .then(parseJsonWithStatus);
+}
+
+export function deleteSavedAssistantChat(id) {
+  return fetch('/api/clinical-assistant/chats/' + encodeURIComponent(id), {
+    method: 'DELETE',
+    headers: authHeaders(),
+    credentials: 'same-origin'
+  }).then(function(r) { return r.json(); });
+}

public/js/clinicalAssistant.js

@@ -5,6 +5,17 @@
 // ============================================================
 import { EMPTY_PROMPT_SETS } from './assistant/data.js';
 import { escapeAttr, escapeHtml, renderAssistantMarkdown } from './assistant/citations.js';
+import {
+  deleteSavedAssistantChat,
+  fetchAssistantChat,
+  fetchAssistantExamples,
+  fetchAssistantStatus,
+  fetchSavedAssistantChat,
+  fetchSavedAssistantChats,
+  openAssistantStream,
+  requestAssistantImage,
+  saveAssistantChat
+} from './assistant/api.js';
 
 (function () {
   'use strict';
@@ -68,8 +79,7 @@ import { escapeAttr, escapeHtml, renderAssistantMarkdown } from './assistant/cit
   }
 
   function loadStatus() {
-    fetch('/api/clinical-assistant/status', { headers: getAuthHeaders(), credentials: 'same-origin' })
+    fetchAssistantStatus()
-      .then(function (r) { return r.json(); })
       .then(function (data) {
         var label = document.getElementById('assistant-model-label');
         if (label && data.success) {
@@ -82,8 +92,7 @@ import { escapeAttr, escapeHtml, renderAssistantMarkdown } from './assistant/cit
   }
 
   function loadExamples() {
-    fetch('/api/clinical-assistant/examples', { headers: getAuthHeaders(), credentials: 'same-origin' })
+    fetchAssistantExamples()
-      .then(function (r) { return r.json(); })
       .then(function (data) {
         if (!data.success || !Array.isArray(data.examples) || !data.examples.length) return;
         dynamicExamples = data.examples;
@@ -150,12 +159,7 @@ import { escapeAttr, escapeHtml, renderAssistantMarkdown } from './assistant/cit
   }
 
   async function streamAssistantResponse(payload, loading) {
-    var response = await fetch('/api/clinical-assistant/chat/stream', {
+    var response = await openAssistantStream(payload);
-      method: 'POST',
-      headers: getAuthHeaders(),
-      credentials: 'same-origin',
-      body: JSON.stringify(payload)
-    });
     if (!response.ok || !response.body) {
       var fallback = await response.json().catch(function () { return {}; });
       throw new Error(fallback.error || ('Request failed (' + response.status + ')'));
@@ -250,14 +254,8 @@ import { escapeAttr, escapeHtml, renderAssistantMarkdown } from './assistant/cit
   }
 
   async function fetchAssistantFallback(payload) {
-    var response = await fetch('/api/clinical-assistant/chat', {
+    var data = await fetchAssistantChat(payload);
-      method: 'POST',
+    if (!data.success) throw new Error(data.error || ('Request failed (' + data._status + ')'));
-      headers: getAuthHeaders(),
-      credentials: 'same-origin',
-      body: JSON.stringify(payload)
-    });
-    var data = await response.json().catch(function () { return {}; });
-    if (!response.ok || !data.success) throw new Error(data.error || ('Request failed (' + response.status + ')'));
     return data;
   }
 
@@ -471,11 +469,7 @@ import { escapeAttr, escapeHtml, renderAssistantMarkdown } from './assistant/cit
     if (fromChat) setBusy(true, 'Generating image...');
     var loading = fromChat ? appendLoadingMessage('Generating image', 'Creating the requested clinical visual...') : null;
     if (out) out.innerHTML = '<p class="assistant-muted"><i class="fas fa-spinner fa-spin"></i> Generating image...</p>';
-    fetch('/api/clinical-assistant/image', {
+    requestAssistantImage(prompt)
-      method: 'POST', headers: getAuthHeaders(), credentials: 'same-origin',
-      body: JSON.stringify({ prompt: prompt })
-    })
-    .then(function (r) { return r.json(); })
     .then(function (data) {
       if (!data.success) throw new Error(data.error || 'Image generation failed');
       var src = data.imageUrl || data.url || (data.base64 ? ('data:image/png;base64,' + data.base64) : '');
@@ -762,19 +756,13 @@ import { escapeAttr, escapeHtml, renderAssistantMarkdown } from './assistant/cit
     var titleEl = document.getElementById('assistant-save-title');
     var title = String(titleEl && titleEl.value || deriveChatTitle()).trim() || deriveChatTitle();
     setBusy(true, 'Saving chat...');
-    fetch('/api/clinical-assistant/chats', {
+    saveAssistantChat({
-      method: 'POST',
+      title: title,
-      headers: getAuthHeaders(),
+      messages: messages,
-      credentials: 'same-origin',
+      sources: lastSources,
-      body: JSON.stringify({
+      lastAnswer: lastAnswer,
-        title: title,
+      generatedImage: imageForSavedChatPayload(lastGeneratedImageSrc)
-        messages: messages,
-        sources: lastSources,
-        lastAnswer: lastAnswer,
-        generatedImage: imageForSavedChatPayload(lastGeneratedImageSrc)
-      })
     })
-    .then(function (r) { return r.json().then(function (data) { data._status = r.status; return data; }); })
     .then(function (data) {
       setBusy(false, 'Ready');
       if (!data.success) throw new Error(data.error || 'Save failed');
@@ -805,8 +793,7 @@ import { escapeAttr, escapeHtml, renderAssistantMarkdown } from './assistant/cit
   }
 
   function loadSavedChats() {
-    fetch('/api/clinical-assistant/chats', { headers: getAuthHeaders(), credentials: 'same-origin' })
+    fetchSavedAssistantChats()
-      .then(function (r) { return r.json(); })
       .then(function (data) { if (data.success) renderSavedChats(data.chats || []); })
       .catch(function () {});
   }
@@ -830,8 +817,7 @@ import { escapeAttr, escapeHtml, renderAssistantMarkdown } from './assistant/cit
   }
 
   function loadSavedChat(id) {
-    fetch('/api/clinical-assistant/chats/' + encodeURIComponent(id), { headers: getAuthHeaders(), credentials: 'same-origin' })
+    fetchSavedAssistantChat(id)
-      .then(function (r) { return r.json().then(function (data) { data._status = r.status; return data; }); })
       .then(function (data) {
         if (!data.success) throw new Error(data.error || 'Load failed');
         restoreSavedChat(data.chat && data.chat.payload || {});
@@ -853,10 +839,7 @@ import { escapeAttr, escapeHtml, renderAssistantMarkdown } from './assistant/cit
       }, 5000);
       return;
     }
-    fetch('/api/clinical-assistant/chats/' + encodeURIComponent(id), {
+    deleteSavedAssistantChat(id)
-      method: 'DELETE', headers: getAuthHeaders(), credentials: 'same-origin'
-    })
-    .then(function (r) { return r.json(); })
     .then(function () { loadSavedChats(); if (typeof showToast === 'function') showToast('Deleted saved chat', 'success'); })
     .catch(function () { if (typeof showToast === 'function') showToast('Delete failed', 'error'); });
   }