feat: implement enhance prompt (#294)

* feat: implement enhance prompt

* add unit test

* fix prompt

* fix: fix eslint and compiling issues

* feat: add border-beam animation

* fix: fix importing issues

---------

Co-authored-by: Henry Li <henry1943@163.com>

web/src/core/api/index.ts

@@ -4,4 +4,5 @@
 export * from "./chat";
 export * from "./mcp";
 export * from "./podcast";
+export * from "./prompt-enhancer";
 export * from "./types";

web/src/core/api/prompt-enhancer.ts

@@ -0,0 +1,62 @@
+// Copyright (c) 2025 Bytedance Ltd. and/or its affiliates
+// SPDX-License-Identifier: MIT
+
+import { resolveServiceURL } from "./resolve-service-url";
+
+export interface EnhancePromptRequest {
+  prompt: string;
+  context?: string;
+  report_style?: string;
+}
+
+export interface EnhancePromptResponse {
+  enhanced_prompt: string;
+}
+
+export async function enhancePrompt(
+  request: EnhancePromptRequest,
+): Promise<string> {
+  const response = await fetch(resolveServiceURL("prompt/enhance"), {
+    method: "POST",
+    headers: {
+      "Content-Type": "application/json",
+    },
+    body: JSON.stringify(request),
+  });
+
+  if (!response.ok) {
+    throw new Error(`HTTP error! status: ${response.status}`);
+  }
+
+  const data = await response.json();
+  console.log("Raw API response:", data); // Debug log
+
+  // The backend now returns the enhanced prompt directly in the result field
+  let enhancedPrompt = data.result;
+
+  // If the result is somehow still a JSON object, extract the enhanced_prompt
+  if (typeof enhancedPrompt === "object" && enhancedPrompt.enhanced_prompt) {
+    enhancedPrompt = enhancedPrompt.enhanced_prompt;
+  }
+
+  // If the result is a JSON string, try to parse it
+  if (typeof enhancedPrompt === "string") {
+    try {
+      const parsed = JSON.parse(enhancedPrompt);
+      if (parsed.enhanced_prompt) {
+        enhancedPrompt = parsed.enhanced_prompt;
+      }
+    } catch {
+      // If parsing fails, use the string as-is (which is what we want)
+      console.log("Using enhanced prompt as-is:", enhancedPrompt);
+    }
+  }
+
+  // Fallback to original prompt if something went wrong
+  if (!enhancedPrompt || enhancedPrompt.trim() === "") {
+    console.warn("No enhanced prompt received, using original");
+    enhancedPrompt = request.prompt;
+  }
+
+  return enhancedPrompt;
+}