use serde::{Deserialize, Serialize};

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct CredentialEntry {
    pub id: String,
    pub domain: String,
    pub username: String,
    pub vault_key: String,
    pub label: String,
}

/// Credentials are managed via frontend Stronghold JS API + SQLite metadata index.
/// Rust side provides helper commands for the metadata layer.

#[tauri::command]
pub fn credentials_list() -> Result<Vec<CredentialEntry>, String> {
    // Credentials stored via frontend Stronghold + SQL plugin
    Ok(vec![])
}

#[tauri::command]
pub fn credentials_generate_password(length: u32) -> String {
    let charset: Vec<char> = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789!@#$%&*-_=+".chars().collect();
    let len = length.max(8).min(64) as usize;
    let mut password = String::with_capacity(len);
    for i in 0..len {
        let seed = (chrono::Utc::now().timestamp_subsec_nanos() as usize).wrapping_mul(7 + i * 13);
        password.push(charset[seed % charset.len()]);
    }
    password
}