support reset the user email (#1735)

### What problem does this PR solve?

support reset the user email from old to new
#1723 

### Type of change

- [x] New Feature (non-breaking change which adds functionality)

api/utils/commands.py

@@ -16,6 +16,7 @@
 
 import base64
 import click
+import re
 
 from flask import Flask
 from werkzeug.security import generate_password_hash
@@ -44,5 +45,34 @@ def reset_password(email, new_password, password_confirm):
     click.echo(click.style('Congratulations! Password has been reset.', fg='green'))
 
 
+@click.command('reset-email', help='Reset the account email.')
+@click.option('--email', prompt=True, help='The old email address of the account whose email you need to reset')
+@click.option('--new-email', prompt=True, help='the new email.')
+@click.option('--email-confirm', prompt=True, help='the new email confirm.')
+def reset_email(email, new_email, email_confirm):
+    if str(new_email).strip() != str(email_confirm).strip():
+        click.echo(click.style('Sorry, new email and confirm email do not match.', fg='red'))
+        return
+    if str(new_email).strip() == str(email).strip():
+        click.echo(click.style('Sorry, new email and old email are the same.', fg='red'))
+        return
+    user = UserService.query(email=email)
+    if not user:
+        click.echo(click.style('sorry. the account: [{}] not exist .'.format(email), fg='red'))
+        return
+    if not re.match(r"^[\w\._-]+@([\w_-]+\.)+[\w-]{2,4}$", new_email):
+        click.echo(click.style('sorry. {} is not a valid email. '.format(new_email), fg='red'))
+        return
+    new_user = UserService.query(email=new_email)
+    if new_user:
+        click.echo(click.style('sorry. the account: [{}] is exist .'.format(new_email), fg='red'))
+        return
+    user_dict = {
+        'email': new_email
+    }
+    UserService.update_user(user[0].id,user_dict)
+    click.echo(click.style('Congratulations!, email has been reset.', fg='green'))
+
 def register_commands(app: Flask):
     app.cli.add_command(reset_password)
+    app.cli.add_command(reset_email)