feature request: telling user when new version is available (#35)

* ✨ feat(cli.ts): add checkIsLatestVersion function

This commit adds a new function that checks if the current version of OpenCommit is the latest version. The function uses the getOpenCommitLatestVersion function from the api module to get the latest version of OpenCommit. If the current version is not the latest version, a warning message is printed to the console, informing the user to update to the latest version to get the latest features and bug fixes.

src/api.ts

@@ -53,7 +53,10 @@ class OpenAi {
     } catch (error: unknown) {
       outro(`${chalk.red('✖')} ${error}`);
 
-      if (axios.isAxiosError<{ error?: { message: string } }>(error) && error.response?.status === 401) {
+      if (
+        axios.isAxiosError<{ error?: { message: string } }>(error) &&
+        error.response?.status === 401
+      ) {
         const openAiError = error.response.data.error;
 
         if (openAiError?.message) outro(openAiError.message);
@@ -67,4 +70,18 @@ class OpenAi {
   };
 }
 
+export const getOpenCommitLatestVersion = async (): Promise<
+  string | undefined
+> => {
+  try {
+    const { data } = await axios.get(
+      'https://unpkg.com/opencommit/package.json'
+    );
+    return data.version;
+  } catch (_) {
+    outro('Error while getting the latest version of opencommit');
+    return undefined;
+  }
+};
+
 export const api = new OpenAi();

src/cli.ts

@@ -7,6 +7,7 @@ import { configCommand } from './commands/config';
 import { hookCommand, isHookCalled } from './commands/githook.js';
 import { prepareCommitMessageHook } from './commands/prepare-commit-msg-hook';
 import { commit } from './commands/commit';
+import { checkIsLatestVersion } from './utils/checkIsLatestVersion';
 
 const extraArgs = process.argv.slice(2);
 
@@ -19,7 +20,8 @@ cli(
     ignoreArgv: (type) => type === 'unknown-flag' || type === 'argument',
     help: { description: packageJSON.description }
   },
-  () => {
+  async () => {
+    await checkIsLatestVersion();
     if (isHookCalled) {
       prepareCommitMessageHook();
     } else {

src/utils/checkIsLatestVersion.ts

@@ -0,0 +1,24 @@
+import { getOpenCommitLatestVersion } from '../api';
+import currentPackage from '../../package.json' assert { type: 'json' };
+import chalk from 'chalk';
+export const checkIsLatestVersion = async () => {
+  const latestVersion = await getOpenCommitLatestVersion();
+
+  if (latestVersion) {
+    const currentVersion = currentPackage.version;
+
+    if (currentVersion !== latestVersion) {
+      console.warn(
+        chalk.yellow(
+          `
+You are not using the latest stable version of OpenCommit!
+Consider updating to the latest version to get the latest features and bug fixes.
+Current version: ${currentVersion}
+Latest version: ${latestVersion}
+🎉 To update to the latest version, run: npm update opencommit
+        `
+        )
+      );
+    }
+  }
+};