[feat] add automatic version check

src/version_checker/version_checker.cpp

@@ -0,0 +1,80 @@
+/*
+ * @Author: DI JUNKUN
+ * @Date: 2025-11-11
+ * Copyright (c) 2025 by DI JUNKUN, All Rights Reserved.
+ */
+
+#ifndef _VERSION_CHECKER_H_
+#define _VERSION_CHECKER_H_
+
+#include <httplib.h>
+
+#include <iostream>
+#include <nlohmann/json.hpp>
+#include <sstream>
+
+using json = nlohmann::json;
+
+namespace crossdesk {
+
+std::string ExtractNumericPart(const std::string& ver) {
+  size_t start = 0;
+  while (start < ver.size() && !std::isdigit(ver[start])) start++;
+  size_t end = start;
+  while (end < ver.size() && (std::isdigit(ver[end]) || ver[end] == '.')) end++;
+  return ver.substr(start, end - start);
+}
+
+std::vector<int> SplitVersion(const std::string& ver) {
+  std::vector<int> nums;
+  std::istringstream ss(ver);
+  std::string token;
+  while (std::getline(ss, token, '.')) {
+    try {
+      nums.push_back(std::stoi(token));
+    } catch (...) {
+      nums.push_back(0);
+    }
+  }
+  return nums;
+}
+
+bool IsNewerVersion(const std::string& current, const std::string& latest) {
+  auto v1 = SplitVersion(ExtractNumericPart(current));
+  auto v2 = SplitVersion(ExtractNumericPart(latest));
+
+  size_t len = std::max(v1.size(), v2.size());
+  v1.resize(len, 0);
+  v2.resize(len, 0);
+
+  for (size_t i = 0; i < len; ++i) {
+    if (v2[i] > v1[i]) return true;
+    if (v2[i] < v1[i]) return false;
+  }
+  return false;
+}
+
+std::string CheckUpdate() {
+  httplib::Client cli("https://version.crossdesk.cn");
+
+  cli.set_connection_timeout(5);
+  cli.set_read_timeout(5);
+
+  if (auto res = cli.Get("/version.json")) {
+    if (res->status == 200) {
+      try {
+        auto j = json::parse(res->body);
+        std::string latest = j["latest_version"];
+        return latest;
+      } catch (std::exception&) {
+        return "";
+      }
+    } else {
+      return "";
+    }
+  } else {
+    return "";
+  }
+}
+}  // namespace crossdesk
+#endif

src/version_checker/version_checker.h

@@ -0,0 +1,20 @@
+/*
+ * @Author: DI JUNKUN
+ * @Date: 2025-11-11
+ * Copyright (c) 2025 by DI JUNKUN, All Rights Reserved.
+ */
+
+#ifndef _VERSION_CHECKER_H_
+#define _VERSION_CHECKER_H_
+
+#include <string>
+
+namespace crossdesk {
+
+std::string CheckUpdate();
+
+bool IsNewerVersion(const std::string& current, const std::string& latest);
+
+}  // namespace crossdesk
+
+#endif