Initial ForgeLM import

tauri-app/src/lib/chat.ts

@@ -0,0 +1,59 @@
+export interface ParsedAssistantResponse {
+  rawContent: string;
+  content: string;
+  reasoning: string;
+  thinkingOpen: boolean;
+}
+
+const THINK_OPEN = "<think>";
+const THINK_CLOSE = "</think>";
+
+export function buildChatTitle(text: string): string {
+  const normalized = text.replace(/\s+/g, " ").trim();
+  if (!normalized) return "New Chat";
+  return normalized.slice(0, 50) + (normalized.length > 50 ? "..." : "");
+}
+
+export function parseAssistantResponse(rawContent: string): ParsedAssistantResponse {
+  let cursor = 0;
+  let thinkingOpen = false;
+  let content = "";
+  let reasoning = "";
+
+  while (cursor < rawContent.length) {
+    if (!thinkingOpen) {
+      const start = rawContent.indexOf(THINK_OPEN, cursor);
+      if (start === -1) {
+        content += rawContent.slice(cursor);
+        break;
+      }
+
+      content += rawContent.slice(cursor, start);
+      cursor = start + THINK_OPEN.length;
+      thinkingOpen = true;
+      continue;
+    }
+
+    const end = rawContent.indexOf(THINK_CLOSE, cursor);
+    if (end === -1) {
+      reasoning += rawContent.slice(cursor);
+      cursor = rawContent.length;
+      break;
+    }
+
+    reasoning += rawContent.slice(cursor, end);
+    cursor = end + THINK_CLOSE.length;
+    thinkingOpen = false;
+  }
+
+  const normalizedContent = reasoning.trim().length > 0
+    ? content.replace(/^\s+/, "")
+    : content;
+
+  return {
+    rawContent,
+    content: normalizedContent.trimEnd(),
+    reasoning: reasoning.trim(),
+    thinkingOpen,
+  };
+}