Specify LLM prompt in case JSON schema is not supported

public/scripts/extensions/expressions/index.js

@@ -5,13 +5,15 @@ import { loadMovingUIState, power_user } from '../../power-user.js';
 import { registerSlashCommand } from '../../slash-commands.js';
 import { onlyUnique, debounce, getCharaFilename, trimToEndSentence, trimToStartSentence } from '../../utils.js';
 import { hideMutedSprites } from '../../group-chats.js';
+import { isJsonSchemaSupported } from '../../textgen-settings.js';
 export { MODULE_NAME };
 
 const MODULE_NAME = 'expressions';
 const UPDATE_INTERVAL = 2000;
-const STREAMING_UPDATE_INTERVAL = 6000;
+const STREAMING_UPDATE_INTERVAL = 10000;
 const TALKINGCHECK_UPDATE_INTERVAL = 500;
 const DEFAULT_FALLBACK_EXPRESSION = 'joy';
+const DEFAULT_LLM_PROMPT = 'Pause your roleplay. Classify the emotion of the last message. Output just one word, e.g. "joy" or "anger". Choose only one of the following labels: {{labels}}';
 const DEFAULT_EXPRESSIONS = [
     'talkinghead',
     'admiration',
@@ -976,9 +978,49 @@ function sampleClassifyText(text) {
     return result.trim();
 }
 
+/**
+ * Gets the classification prompt for the LLM API.
+ * @param {string[]} labels A list of labels to search for.
+ * @returns {Promise<string>} Prompt for the LLM API.
+ */
+async function getLlmPrompt(labels) {
+    if (isJsonSchemaSupported()) {
+        return '';
+    }
+
+    const prompt = String(extension_settings.expressions.llmPrompt).replace(/{{labels}}/gi, labels.map(x => `"${x}"`).join(', '));
+    return prompt;
+}
+
+/**
+ * Parses the emotion response from the LLM API.
+ * @param {string} emotionResponse The response from the LLM API.
+ * @param {string[]} labels A list of labels to search for.
+ * @returns {string} The parsed emotion or the fallback expression.
+ */
+function parseLlmResponse(emotionResponse, labels) {
+    const fallbackExpression = getFallbackExpression();
+
+    try {
+        const parsedEmotion = JSON.parse(emotionResponse);
+        return parsedEmotion?.emotion ?? fallbackExpression;
+
+    } catch {
+        const fuse = new Fuse([emotionResponse]);
+        for (const label of labels) {
+            const result = fuse.search(label);
+            if (result.length > 0) {
+                return label;
+            }
+        }
+    }
+
+    return fallbackExpression;
+}
+
 function onTextGenSettingsReady(args) {
     // Only call if inside an API call
-    if (inApiCall) {
+    if (inApiCall && extension_settings.expressions.api === EXPRESSION_API.llm && isJsonSchemaSupported()) {
         const emotions = DEFAULT_EXPRESSIONS.filter((e) => e != 'talkinghead');
         Object.assign(args, {
             top_k: 1,
@@ -1016,8 +1058,8 @@ async function getExpressionLabel(text) {
 
     try {
         switch (extension_settings.expressions.api) {
-            case EXPRESSION_API.local:
-                // Local BERT pipeline
+            // Local BERT pipeline
+            case EXPRESSION_API.local: {
                 const localResult = await fetch('/api/extra/classify', {
                     method: 'POST',
                     headers: getRequestHeaders(),
@@ -1028,15 +1070,16 @@ async function getExpressionLabel(text) {
                     const data = await localResult.json();
                     return data.classification[0].label;
                 }
-
-                break;
-            case EXPRESSION_API.llm:
-                // Using LLM
-                const emotionResponse = await generateQuietPrompt('', false);
-                const parsedEmotion = JSON.parse(emotionResponse);
-                return parsedEmotion.emotion;
-            default:
-                // Extras
+            } break;
+            // Using LLM
+            case EXPRESSION_API.llm: {
+                const expressionsList = await getExpressionsList();
+                const prompt = await getLlmPrompt(expressionsList);
+                const emotionResponse = await generateQuietPrompt(prompt, false, false);
+                return parseLlmResponse(emotionResponse, expressionsList);
+            }
+            // Extras
+            default: {
                 const url = new URL(getApiUrl());
                 url.pathname = '/api/classify';
 
@@ -1053,6 +1096,7 @@ async function getExpressionLabel(text) {
                     const data = await extrasResult.json();
                     return data.classification[0].label;
                 }
+            } break;
         }
     } catch (error) {
         toastr.info('Could not classify expression. Check the console or your backend for more information.');
@@ -1488,6 +1532,7 @@ function onExperesionApiChanged() {
     const tempApi = this.value;
     if (tempApi) {
         extension_settings.expressions.api = Number(tempApi);
+        $('.expression_llm_prompt_block').toggle(extension_settings.expressions.api === EXPRESSION_API.llm);
         moduleWorker();
         saveSettingsDebounced();
     }
@@ -1760,6 +1805,11 @@ function migrateSettings() {
         delete extension_settings.expressions.local;
         saveSettingsDebounced();
     }
+
+    if (extension_settings.expressions.llmPrompt === undefined) {
+        extension_settings.expressions.llmPrompt = DEFAULT_LLM_PROMPT;
+        saveSettingsDebounced();
+    }
 }
 
 (async function () {
@@ -1811,7 +1861,13 @@ function migrateSettings() {
         });
 
         await renderAdditionalExpressionSettings();
-        $('#expression_api').val(extension_settings.expressions.api || EXPRESSION_API.extras);
+        $('#expression_api').val(extension_settings.expressions.api ?? EXPRESSION_API.extras);
+        $('.expression_llm_prompt_block').toggle(extension_settings.expressions.api === EXPRESSION_API.llm);
+        $('#expression_llm_prompt').val(extension_settings.expressions.llmPrompt ?? '');
+        $('#expression_llm_prompt').on('input', function () {
+            extension_settings.expressions.llmPrompt = $(this).val();
+            saveSettingsDebounced();
+        });
 
         $('#expression_custom_add').on('click', onClickExpressionAddCustom);
         $('#expression_custom_remove').on('click', onClickExpressionRemoveCustom);

public/scripts/extensions/expressions/settings.html

@@ -27,6 +27,11 @@
                     <option value="2">LLM</option>
                 </select>
             </div>
+            <div class="expression_llm_prompt_block m-b-1 m-t-1">
+                <label for="expression_llm_prompt">LLM Prompt</label>
+                <small>Will be used if the API doesn't support JSON schemas.</small>
+                <textarea id="expression_llm_prompt" type="text" class="text_pole" rows="2"></textarea>
+            </div>
             <div class="expression_fallback_block m-b-1 m-t-1">
                 <label for="expression_fallback">Default / Fallback Expression</label>
                 <small>Set the default and fallback expression being used when no matching expression is found.</small>

public/scripts/textgen-settings.js

@@ -3,6 +3,7 @@ import {
     event_types,
     getRequestHeaders,
     getStoppingStrings,
+    main_api,
     max_context,
     saveSettingsDebounced,
     setGenerationParamsFromPreset,
@@ -978,6 +979,10 @@ function getModel() {
     return undefined;
 }
 
+export function isJsonSchemaSupported() {
+    return settings.type === TABBY && main_api === 'textgenerationwebui';
+}
+
 export function getTextGenGenerationData(finalPrompt, maxTokens, isImpersonate, isContinue, cfgValues, type) {
     const canMultiSwipe = !isContinue && !isImpersonate && type !== 'quiet';
     let params = {