feat(cli): add upgrade command and update notifier

cli.ts

@@ -1,8 +1,18 @@
 import { loadConfig } from "./src/load_config.ts";
 import { VrCommand } from "./src/cli/commands/vr.ts";
+import { version } from "./src/version.ts";
+import { DenoLand, UpdateNotifier } from "./deps.ts";
+import { VR_NAME } from "./src/consts.ts";
 
 if (import.meta.main) {
+  const notifier = new UpdateNotifier({
+    name: VR_NAME,
+    registry: DenoLand,
+    currentVersion: version,
+  });
+  const checkForUpdates = notifier.checkForUpdates();
   const config = await loadConfig();
-  new VrCommand(config)
-    .parse(Deno.args);
+  new VrCommand(config).parse(Deno.args);
+  await checkForUpdates;
+  notifier.notify("vr upgrade");
 }

deps.ts

@@ -22,3 +22,10 @@ export {
   ValidationError,
 } from "https://deno.land/x/cliffy@v0.18.1/command/mod.ts";
 export { kill } from "https://deno.land/x/process@v0.3.0/mod.ts";
+export {
+  DenoLand,
+  latestVersion,
+  parseURL,
+  UpdateNotifier,
+} from "https://x.nest.land/hatcher@0.10.1/mod.ts";
+export * as semver from "https://deno.land/x/semver@v1.0.0/mod.ts";

src/cli/commands/upgrade.ts

@@ -0,0 +1,42 @@
+import { Command, DenoLand, semver } from "../../../deps.ts";
+import { log } from "../../logger.ts";
+import { version as currentVersion } from "../../version.ts";
+import { VR_NAME } from "../../consts.ts";
+import { spawn } from "../../util.ts";
+
+export class UpgradeCommand extends Command {
+  constructor() {
+    super();
+    this.description(
+      "Upgrade Velociraptor to the latest version or to a specific one",
+    )
+      .arguments("[version:string]")
+      .action(async (options, version: string | undefined) => {
+        let newVersion = version;
+        if (!newVersion) {
+          newVersion = await DenoLand.latestVersion(VR_NAME);
+        }
+        if (!newVersion) {
+          log.error("Cannot retrieve the latest version tag");
+          return;
+        }
+        if (semver.eq(newVersion, currentVersion)) {
+          log.info("Velociraptor is already up-to-date");
+          return;
+        }
+        try {
+          await spawn([
+            "deno",
+            "install",
+            "--reload",
+            "-qAfn",
+            "vr",
+            `https://deno.land/x/${VR_NAME}@${newVersion}/cli.ts`,
+          ]);
+          log.info(`✅ Successfully upgraded to ${newVersion}`);
+        } catch (e) {
+          console.log(e.message);
+        }
+      });
+  }
+}

src/cli/commands/vr.ts

@@ -9,6 +9,7 @@ import { RunHookCommand } from "./run_hook.ts";
 import { VR_HOOKS, VR_LOG, VR_SHELL } from "../../consts.ts";
 import { checkGitHooks } from "../../git_hooks.ts";
 import { validateConfigData } from "../../validate_config_data.ts";
+import { UpgradeCommand } from "./upgrade.ts";
 
 export class VrCommand extends Command {
   constructor(private configData: ConfigData | null) {
@@ -41,6 +42,7 @@ export class VrCommand extends Command {
       .command("run", new RunCommand(this.configData))
       .command("run-hook", new RunHookCommand(this.configData))
       .command("export", new ExportCommand(this.configData))
+      .command("upgrade", new UpgradeCommand())
       .command("completions", new CompletionsCommand())
       .reset();
   }

src/consts.ts

@@ -1,4 +1,5 @@
-export const VR_MARK = "Generated by velociraptor";
+export const VR_NAME = "velociraptor";
+export const VR_MARK = "Generated by Velociraptor";
 export const VR_SHELL = "VR_SHELL";
 export const VR_LOG = "VR_LOG";
 export const VR_HOOKS = "VR_HOOKS";

src/logger.ts

@@ -28,7 +28,7 @@ await logger.setup({
   },
   loggers: {
     default: {
-      level: Deno.env.get(VR_LOG) as LevelName || "WARNING",
+      level: Deno.env.get(VR_LOG) as LevelName || "INFO",
       handlers: ["console"],
     },
   },

src/run_commands.ts

@@ -56,7 +56,7 @@ async function runCommand(
     cwd,
     env: getEnvVars(command),
   };
-  log.info(
+  log.debug(
     `Running > ${cmd}${
       additionalArgs && additionalArgs.length > 0
         ? ` -- ${additionalArgs.join(" ")}`

src/util.ts

@@ -19,12 +19,12 @@ export function makeFileExecutable(filePath: string) {
   }
 }
 
-export async function spawn(args: string[], cwd: string): Promise<string> {
+export async function spawn(args: string[], cwd?: string): Promise<string> {
   const process = Deno.run({
     cmd: args,
     cwd,
     stdout: "piped",
-    stderr: "null",
+    stderr: "piped",
   });
   const { code } = await process.status();
   if (code === 0) {