chore(login): deprecate password-based auth (#4877)

Author: ltm

packages/@ionic/cli/src/commands/login.ts

@@ -15,43 +15,34 @@ export class LoginCommand extends Command implements CommandPreRun {
       type: 'global',
       summary: 'Log in to Ionic',
       description: `
-Authenticate with Ionic and retrieve a user token, which is stored in the CLI config. The most secure way to log in is running ${input('ionic login')} without arguments, which will open a browser where you can submit your credentials.
+Authenticate with Ionic and retrieve a user token, which is stored in the CLI config. Running ${input('ionic login')} will open a browser where you can submit your credentials.
 
-If the ${input('IONIC_TOKEN')} environment variable is set, the CLI will automatically authenticate you. To retrieve your user token, first use ${input('ionic login <email> <password>')} to log in, then use ${input('ionic config get -g tokens.user')} to print the token. (${strong('Note')}: Tokens retrieved from the browser login are short-lived and not recommended for use with ${input('IONIC_TOKEN')}.)
-
-${input('ionic login')} will also accept ${input('password')} through stdin, e.g.: ${input('echo "<password>" | ionic login <email>')}.
+If the ${input('IONIC_TOKEN')} environment variable is set, the CLI will automatically authenticate you. Use the Dashboard to generate a Personal Access Token.
 
 If you need to create an Ionic account, use ${input('ionic signup')} or the Ionic Website[^signup].
 
-You can reset your password in the Dashboard[^reset-password].
-
 If you are having issues logging in, please get in touch with our Support[^support-request].
       `,
       footnotes: [
         {
           id: 'signup',
           url: 'https://ionicframework.com/signup',
         },
-        {
-          id: 'reset-password',
-          url: 'https://dashboard.ionicframework.com/reset-password',
-          shortUrl: 'https://ion.link/reset-password',
-        },
         {
           id: 'support-request',
           url: 'https://ion.link/support-request',
         },
       ],
-      exampleCommands: ['', 'john@example.com', 'hello@example.com secret'],
+      exampleCommands: [''],
       inputs: [
         {
           name: 'email',
-          summary: 'Your email address',
+          summary: 'Your email address (deprecated)',
           private: true,
         },
         {
           name: 'password',
-          summary: 'Your password',
+          summary: 'Your password (deprecated)',
           private: true,
         },
       ],
@@ -74,6 +65,16 @@ If you are having issues logging in, please get in touch with our Support[^suppo
       this.env.log.nl();
     }
 
+    if (!!inputs[0]) {
+      this.env.log.warn(
+        'Authenticating using email and password is deprecated. ' +
+        (this.env.flags.interactive
+          ? `Please run ${input('ionic login')} without arguments to log in.`
+          : `Please generate a Personal Access Token and set the ${input('IONIC_TOKEN')} environment variable.`)
+      );
+      this.env.log.nl();
+    }
+
     // ask for password only if the user specifies an email
     const validateEmail = !!inputs[0];
     const askForPassword = inputs[0] && !inputs[1];

packages/@ionic/cli/src/index.ts

@@ -83,6 +83,13 @@ async function authenticateFromEnvironment(ienv: IonicEnvironment) {
     if (ienv.config.get('user.email') !== email) {
       debug(`${strong('IONIC_EMAIL')} mismatch with current session--attempting login`);
 
+      ienv.log.warn(
+        'Authenticating using email and password is deprecated. Please generate a Personal Access Token and set the ' +
+        strong('IONIC_TOKEN') +
+        ' environment variable.'
+      );
+      ienv.log.nl();
+
       try {
         await ienv.session.login(email, password);
       } catch (e) {