From f47c0515c9c878fc812240a55e46c824f6436aa7 Mon Sep 17 00:00:00 2001
From: dnjin <luogu_dnj@outlook.com>
Date: Sun, 2 Aug 2026 21:20:16 +0800
Subject: [PATCH] =?UTF-8?q?fix:=20=E4=BF=AE=E5=A4=8D=E4=BA=86=20issuse=203?=
 =?UTF-8?q?2=2033=20=E6=8F=90=E5=88=B0=E7=9A=84=E9=97=AE=E9=A2=98?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .github/PULL_REQUEST_TEMPLATE.md         | 23 +++++++++++++++++
 apps/vscode-extension/src/atcoder.ts     | 24 ++++++++++++++---
 apps/vscode-extension/src/tools/deepl.ts | 33 +++++++++++++++++-------
 packages/webview/src/WebviewApp.tsx      | 11 ++++++++
 packages/webview/src/types.ts            |  1 +
 5 files changed, 80 insertions(+), 12 deletions(-)
 create mode 100644 .github/PULL_REQUEST_TEMPLATE.md

diff --git a/.github/PULL_REQUEST_TEMPLATE.md b/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000..170f36e
--- /dev/null
+++ b/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,23 @@
+## 关联 Issue
+
+## 变更概述
+
+## 变更类型
+
+- [ ] fix Bug
+- [ ] Feature
+- [ ] UI / Style
+- [ ] Refactor
+- [ ] Documentation
+
+## 涉及文件
+
+- [ ] 前端
+
+```
+```
+
+- [ ] 后端
+
+```
+```
\ No newline at end of file
diff --git a/apps/vscode-extension/src/atcoder.ts b/apps/vscode-extension/src/atcoder.ts
index f99358b..81318a5 100644
--- a/apps/vscode-extension/src/atcoder.ts
+++ b/apps/vscode-extension/src/atcoder.ts
@@ -17,6 +17,7 @@ export interface AtCoderProblem {
     inputFormat: string;
     outputFormat: string;
     samples: SampleCase[];
+    sampleUrl?: string;
 }
 
 function decodeEntities(text: string): string {
@@ -129,9 +130,22 @@ function extractSection(html: string, headings: string[]): string {
 }
 
 function getLangContent(html: string, lang: "en" | "ja"): string {
-    const pattern = `<span[^>]*\\sclass="[^"]*\\blang-${lang}\\b[^"]*"[^>]*>([\\s\\S]*?)<\\/span>`;
-    const match = html.match(new RegExp(pattern, "i"));
-    return match ? match[1] : html;
+    const startMatch = html.match(
+        new RegExp(`<span[^>]*\\sclass="[^"]*\\blang-${lang}\\b[^"]*"[^>]*>`, "i")
+    );
+    if (!startMatch || startMatch.index === undefined) return html;
+    const start = startMatch.index + startMatch[0].length;
+    const now = /<\/?span\b[^>]*>/gi;
+    let dep = 1;
+    now.lastIndex = start;
+    let m: RegExpExecArray | null;
+    for (; (m = now.exec(html)) !== null;) {
+        if (m[0].startsWith("</")) {
+            dep--;
+            if (dep === 0) return html.slice(start, m.index);
+        } else dep++;
+    }
+    return html.slice(start);
 }
 
 export function parseProblemPage(html: string, url: string): AtCoderProblem {
@@ -149,6 +163,9 @@ export function parseProblemPage(html: string, url: string): AtCoderProblem {
     const inputFormat = extractSection(contentSrc, ["Input", "入力"]);
     const outputFormat = extractSection(contentSrc, ["Output", "出力"]);
 
+    const sampleLinkMatch = contentSrc.match(/href="([^"]*output=sample[^"]*)"/i);
+    const sampleUrl = sampleLinkMatch ? sampleLinkMatch[1] : undefined;
+
     const samples: SampleCase[] = [];
     const sampleBlocks = Array.from(html.matchAll(/<h3[^>]*>\s*Sample\s*(Input|Output)\s*(\d+)\s*<\/h3>/gi));
 
@@ -190,6 +207,7 @@ export function parseProblemPage(html: string, url: string): AtCoderProblem {
         inputFormat,
         outputFormat,
         samples,
+        sampleUrl,
     };
 }
 
diff --git a/apps/vscode-extension/src/tools/deepl.ts b/apps/vscode-extension/src/tools/deepl.ts
index 7ce2e3c..5f80550 100644
--- a/apps/vscode-extension/src/tools/deepl.ts
+++ b/apps/vscode-extension/src/tools/deepl.ts
@@ -33,6 +33,9 @@ export async function translateTextFree(text: string, lang: string): Promise<str
     }, id);
 
     return new Promise((resolve, reject) => {
+        let settled = false;
+        const settle = (fn: () => void) => { if (!settled) { settled = true; fn(); } };
+
         const req = https.request(
             {
                 hostname: "www2.deepl.com",
@@ -40,29 +43,41 @@ export async function translateTextFree(text: string, lang: string): Promise<str
                 method: "POST",
                 headers: {
                     "Content-Type": "application/json",
+                    "Content-Length": Buffer.byteLength(postData),
                     "Host": "www2.deepl.com",
                     "Origin": "https://www.deepl.com",
                     "Referer": "https://www.deepl.com/",
+                    "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/128.0.0.0 Safari/537.36",
                 },
             },
             (res) => {
                 let data = "";
                 res.on("data", (chunk) => (data += chunk));
                 res.on("end", () => {
-                    try {
-                        const json = JSON.parse(data);
-                        if (json?.result?.texts?.[0]?.text) {
-                            resolve(json.result.texts[0].text);
-                        } else {
+                    settle(() => {
+                        if (res.statusCode && res.statusCode >= 400) {
+                            reject(new Error(res.statusCode === 429 ? "翻译请求过于频繁，请稍后再试" : `翻译接口错误 (${res.statusCode})`));
+                            return;
+                        }
+                        try {
+                            const json = JSON.parse(data);
+                            if (json?.result?.texts?.[0]?.text) {
+                                resolve(json.result.texts[0].text);
+                            } else {
+                                reject(new Error("翻译接口返回异常"));
+                            }
+                        } catch {
                             reject(new Error("翻译接口返回异常"));
                         }
-                    } catch {
-                        reject(new Error("翻译接口返回异常"));
-                    }
+                    });
                 });
             }
         );
-        req.on("error", () => reject(new Error("翻译请求失败")));
+
+        req.setTimeout(20000, () => req.destroy(new Error("翻译请求超时")));
+        req.on("error", (err: Error) =>
+            settle(() => reject(new Error(err.message === "翻译请求超时" ? "翻译请求超时" : `翻译请求失败: ${err.message}`)))
+        );
         req.write(postData);
         req.end();
     });
diff --git a/packages/webview/src/WebviewApp.tsx b/packages/webview/src/WebviewApp.tsx
index 91959a2..da02959 100644
--- a/packages/webview/src/WebviewApp.tsx
+++ b/packages/webview/src/WebviewApp.tsx
@@ -698,6 +698,17 @@ const WebviewApp: React.FC<WebviewAppProps> = ({
                     </div>
                   </div>
                 ))
+              ) : problem.sampleUrl ? (
+                <div className="flex flex-col items-start gap-2">
+                  <div className="text-[12px] opacity-60">该题目没有内嵌样例，样例在外部链接中。</div>
+                  <Button
+                    onClick={() => vscode.postMessage({ command: "openBrowser", url: problem.sampleUrl! })}
+                    size="sm"
+                    className="h-[26px] text-[11px]"
+                  >
+                    查看样例
+                  </Button>
+                </div>
               ) : (
                 <div className="text-[12px] opacity-60">当前题目没有找到样例。</div>
               )}
diff --git a/packages/webview/src/types.ts b/packages/webview/src/types.ts
index 9ef0a18..5b9875b 100644
--- a/packages/webview/src/types.ts
+++ b/packages/webview/src/types.ts
@@ -13,6 +13,7 @@ export interface ContestProblem {
   inputFormat: string;
   outputFormat: string;
   samples: SampleCase[];
+  sampleUrl?: string;
 }
 
 export interface SubmitResult {