pub fn is_valid_email(email: &str) -> bool {
let email = email.trim();
let Some((local, domain)) = email.split_once('@') else {
return false;
};
if local.is_empty() || domain.is_empty() {
return false;
}
if email.chars().filter(|c| *c == '@').count() != 1 {
return false;
}
if !domain.contains('.') || domain.starts_with('.') || domain.ends_with('.') {
return false;
}
true
}