feat: PIT Channel plugin v1.0.0 - complete implementation

src/update/version.ts

@@ -0,0 +1,92 @@
+/**
+ * 版本管理模块
+ * @module update/version
+ */
+
+import type { VersionInfo } from "../types.js";
+import { createLogger } from "../utils/logger.js";
+
+const MODULE = "update:version";
+
+/**
+ * 当前版本（从 package.json 读取）
+ */
+let CURRENT_VERSION = "1.0.0";
+
+/**
+ * 设置当前版本
+ */
+export function setCurrentVersion(version: string): void {
+  CURRENT_VERSION = version;
+}
+
+/**
+ * 检查更新
+ */
+export async function checkUpdate(): Promise<VersionInfo> {
+  const log = createLogger(MODULE);
+
+  try {
+    // TODO: 从 npm registry 或 GitHub releases 获取最新版本
+    // 这里简化处理
+    const latestVersion = "1.0.0";
+    
+    return {
+      version: CURRENT_VERSION,
+      latestVersion,
+      hasUpdate: compareVersions(CURRENT_VERSION, latestVersion) < 0,
+    };
+  } catch (error) {
+    log.error("Failed to check update", error);
+    return {
+      version: CURRENT_VERSION,
+      hasUpdate: false,
+    };
+  }
+}
+
+/**
+ * 比较版本号
+ * @returns -1: v1 < v2, 0: v1 == v2, 1: v1 > v2
+ */
+export function compareVersions(v1: string, v2: string): number {
+  const parts1 = v1.split(".").map(Number);
+  const parts2 = v2.split(".").map(Number);
+
+  for (let i = 0; i < Math.max(parts1.length, parts2.length); i++) {
+    const p1 = parts1[i] ?? 0;
+    const p2 = parts2[i] ?? 0;
+
+    if (p1 < p2) return -1;
+    if (p1 > p2) return 1;
+  }
+
+  return 0;
+}
+
+/**
+ * 解析版本号
+ */
+export function parseVersion(version: string): {
+  major: number;
+  minor: number;
+  patch: number;
+  prerelease?: string;
+  build?: string;
+} {
+  const match = version.match(
+    /^(\\d+)\\.(\\d+)\\.(\\d+)(?:-([a-zA-Z0-9.-]+))?(?:\\+([a-zA-Z0-9.-]+))?$/
+  );
+
+  if (!match) {
+    throw new Error(`Invalid version: ${version}`);
+  }
+
+  return {
+    major: parseInt(match[1], 10),
+    minor: parseInt(match[2], 10),
+    patch: parseInt(match[3], 10),
+    prerelease: match[4],
+    build: match[5],
+  };
+}