this_me/utils/
validate_input.rs

1use std::io;
2
3pub fn validate_username(username: &str) -> io::Result<()> {
4    println!("🔍 Validating username: '{}' (chars: {}, bytes: {})", username, username.chars().count(), username.len());
5
6    let username_len = username.len();
7    if username_len < 5 || username_len > 21 {
8        return Err(io::Error::new(io::ErrorKind::InvalidInput, "❌ Username must be 5-21 characters long."));
9    }
10
11    if username.starts_with('.') || username.starts_with('_') {
12        return Err(io::Error::new(io::ErrorKind::InvalidInput, "❌ Username cannot start with '.' or '_'"));
13    }
14
15    if username.ends_with('.') || username.ends_with('_') {
16        return Err(io::Error::new(io::ErrorKind::InvalidInput, "❌ Username cannot end with '.' or '_'"));
17    }
18
19    if username.contains("..") || username.contains("__") || username.contains("._") || username.contains("_.") {
20        return Err(io::Error::new(io::ErrorKind::InvalidInput, "❌ Username cannot contain consecutive '.' or '_'"));
21    }
22
23    if !username.chars().all(|c| c.is_ascii_alphanumeric() || c == '.' || c == '_') {
24        return Err(io::Error::new(io::ErrorKind::InvalidInput, "❌ Username must only contain letters, numbers, '.' or '_'"));
25    }
26
27    let period_count = username.matches('.').count();
28    if period_count > 2 {
29        return Err(io::Error::new(io::ErrorKind::InvalidInput, "❌ Username cannot have more than 2 periods."));
30    }
31
32    Ok(())
33}
34pub fn validate_hash(hash: &str) -> io::Result<()> {
35    if hash.len() < 4 {
36        return Err(io::Error::new(io::ErrorKind::InvalidInput, "❌ Hash (password) must be at least 4 characters long."));
37    }
38    Ok(())
39}
this_me/utils/validate_input.rs

this_me/utils/
validate_input.rs
