Add reasoning auto-parsing, always show reasoning prefix/suffix in Markdown, respect space trim preference

public/scripts/reasoning.js

@@ -1,4 +1,4 @@
-import { chat, closeMessageEditor, saveChatConditional, saveSettingsDebounced, substituteParams, updateMessageBlock } from '../script.js';
+import { chat, closeMessageEditor, event_types, eventSource, saveChatConditional, saveSettingsDebounced, substituteParams, updateMessageBlock } from '../script.js';
 import { getRegexedString, regex_placement } from './extensions/regex/engine.js';
 import { t } from './i18n.js';
 import { MacrosParser } from './macros.js';
@@ -8,7 +8,7 @@ import { SlashCommand } from './slash-commands/SlashCommand.js';
 import { ARGUMENT_TYPE, SlashCommandArgument, SlashCommandNamedArgument } from './slash-commands/SlashCommandArgument.js';
 import { commonEnumProviders } from './slash-commands/SlashCommandCommonEnumsProvider.js';
 import { SlashCommandParser } from './slash-commands/SlashCommandParser.js';
-import { copyText } from './utils.js';
+import { copyText, escapeRegex } from './utils.js';
 
 /**
  * Gets a message from a jQuery element.
@@ -106,6 +106,12 @@ function loadReasoningSettings() {
         power_user.reasoning.max_additions = Number($(this).val());
         saveSettingsDebounced();
     });
+
+    $('#reasoning_auto_parse').prop('checked', power_user.reasoning.auto_parse);
+    $('#reasoning_auto_parse').on('change', function () {
+        power_user.reasoning.auto_parse = !!$(this).prop('checked');
+        saveSettingsDebounced();
+    });
 }
 
 function registerReasoningSlashCommands() {
@@ -290,9 +296,94 @@ function setReasoningEventHandlers(){
     });
 }
 
+/**
+ * Parses reasoning from a string using the power user reasoning settings.
+ * @typedef {Object} ParsedReasoning
+ * @property {string} reasoning Reasoning block
+ * @property {string} content Message content
+ * @param {string} str Content of the message
+ * @returns {ParsedReasoning|null} Parsed reasoning block and message content
+ */
+function parseReasoningFromString(str) {
+    // Both prefix and suffix must be defined
+    if (!power_user.reasoning.prefix || !power_user.reasoning.suffix) {
+        return null;
+    }
+
+    try {
+        let reasoning = '';
+
+        const regex = new RegExp(`${escapeRegex(power_user.reasoning.prefix)}(.*?)${escapeRegex(power_user.reasoning.suffix)}`, 's');
+        const content = String(str).replace(regex, (_match, captureGroup) => {
+            reasoning = power_user.trim_spaces ? captureGroup.trim() : captureGroup;
+            return '';
+        });
+
+        return { reasoning, content };
+    } catch (error) {
+        console.error('[Reasoning] Error parsing reasoning block', error);
+        return null;
+    }
+}
+
+function registerReasoningAppEvents() {
+    eventSource.makeFirst(event_types.MESSAGE_RECEIVED, (/** @type {number} */ idx) => {
+        if (!power_user.reasoning.auto_parse) {
+            return;
+        }
+
+        console.debug('[Reasoning] Auto-parsing reasoning block for message', idx);
+        const message = chat[idx];
+
+        if (!message) {
+            console.warn('[Reasoning] Message not found', idx);
+            return null;
+        }
+
+        if (!message.mes || message.mes === '...') {
+            console.debug('[Reasoning] Message content is empty or a placeholder', idx);
+            return null;
+        }
+
+        const parsedReasoning = parseReasoningFromString(message.mes);
+
+        // No reasoning block found
+        if (!parsedReasoning) {
+            return;
+        }
+
+        // Make sure the message has an extra object
+        if (!message.extra || typeof message.extra !== 'object') {
+            message.extra = {};
+        }
+
+        const contentUpdated = !!parsedReasoning.reasoning || parsedReasoning.content !== message.mes;
+
+        // If reasoning was found, add it to the message
+        if (parsedReasoning.reasoning) {
+            message.extra.reasoning = parsedReasoning.reasoning;
+        }
+
+        // Update the message text if it was changed
+        if (parsedReasoning.content !== message.mes) {
+            message.mes = parsedReasoning.content;
+        }
+
+        // Find if a message already exists in DOM and must be updated
+        if (contentUpdated) {
+            const messageRendered = document.querySelector(`.mes[mesid="${idx}"]`) !== null;
+            if (messageRendered) {
+                console.debug('[Reasoning] Updating message block', idx);
+                updateMessageBlock(idx, message);
+            }
+        }
+    });
+}
+
 export function initReasoning() {
     loadReasoningSettings();
     setReasoningEventHandlers();
     registerReasoningSlashCommands();
     registerReasoningMacros();
+    registerReasoningAppEvents();
 }