Add mac os installation

packages/safe-chain/src/installation/installOnMacOS.js

@@ -0,0 +1,78 @@
+import { tmpdir } from "os";
+import { unlinkSync } from "fs";
+import { join } from "path";
+import { ui } from "../environment/userInteraction.js";
+import { safeSpawn } from "../utils/safeSpawn.js";
+import { downloadAgentToFile, getAgentVersion } from "./downloadAgent.js";
+
+const MACOS_SERVICE_LABEL = "com.aikido.SafeChainAgent";
+
+export async function installOnMacOS() {
+  if (!isRunningAsRoot()) {
+    ui.writeError("Root privileges required.");
+    ui.writeInformation("Please run this command with sudo:");
+    ui.writeInformation("  sudo safe-chain --ultimate");
+    return;
+  }
+
+  const pkgPath = join(tmpdir(), `SafeChainUltimate-${Date.now()}.pkg`);
+
+  ui.emptyLine();
+  ui.writeInformation(`📥 Downloading SafeChain Ultimate ${getAgentVersion()}`);
+  ui.writeVerbose(`Destination: ${pkgPath}`);
+
+  const result = await downloadAgentToFile(pkgPath);
+  if (!result) {
+    ui.writeError("No download available for this platform/architecture.");
+    return;
+  }
+
+  try {
+    ui.writeInformation("⚙️  Installing SafeChain Ultimate...");
+    await runPkgInstaller(pkgPath);
+
+    ui.emptyLine();
+    ui.writeInformation(
+      "✅ SafeChain Ultimate installed and started successfully!",
+    );
+    ui.emptyLine();
+  } finally {
+    ui.writeVerbose(`Cleaning up temporary file: ${pkgPath}`);
+    cleanup(pkgPath);
+  }
+}
+
+function isRunningAsRoot() {
+  const rootUserUid = 0;
+  return process.getuid?.() === rootUserUid;
+}
+
+/**
+ * @param {string} pkgPath
+ */
+async function runPkgInstaller(pkgPath) {
+  ui.writeVerbose(`Running: installer -pkg "${pkgPath}" -target /`);
+
+  const result = await safeSpawn(
+    "installer",
+    ["-pkg", pkgPath, "-target", "/"],
+    {
+      stdio: "inherit",
+    },
+  );
+
+  if (result.status !== 0) {
+    throw new Error(`PKG installer failed (exit code: ${result.status})`);
+  }
+}
+
+/**
+ * @param {string} pkgPath
+ */
+function cleanup(pkgPath) {
+  try {
+    unlinkSync(pkgPath);
+  } catch {
+    ui.writeVerbose("Failed to clean up temporary installer file.");
+  }
+}