fixes

src/accounts/profile.rs

@@ -0,0 +1,147 @@
+//! Account profile data structures and validation.
+//!
+//! Defines `AccountProfile` and `AccountsConfig` for multi-account support.
+//! Account names are validated to contain only alphanumeric characters, hyphens, and underscores.
+
+use serde::{Deserialize, Serialize};
+use std::path::PathBuf;
+
+/// Configuration for all accounts, stored in `~/.config/tele-tui/accounts.toml`.
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct AccountsConfig {
+    /// Name of the default account to use when no `--account` flag is provided.
+    pub default_account: String,
+
+    /// List of configured accounts.
+    pub accounts: Vec<AccountProfile>,
+}
+
+/// A single account profile.
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct AccountProfile {
+    /// Unique identifier (used in directory names and CLI flag).
+    pub name: String,
+
+    /// Human-readable display name.
+    pub display_name: String,
+}
+
+impl AccountsConfig {
+    /// Creates a default config with a single "default" account.
+    pub fn default_single() -> Self {
+        Self {
+            default_account: "default".to_string(),
+            accounts: vec![AccountProfile {
+                name: "default".to_string(),
+                display_name: "Default".to_string(),
+            }],
+        }
+    }
+
+    /// Finds an account by name.
+    pub fn find_account(&self, name: &str) -> Option<&AccountProfile> {
+        self.accounts.iter().find(|a| a.name == name)
+    }
+}
+
+impl AccountProfile {
+    /// Computes the TDLib database directory path for this account.
+    ///
+    /// Returns `~/.local/share/tele-tui/accounts/{name}/tdlib_data`
+    /// (or platform equivalent via `dirs::data_dir()`).
+    pub fn db_path(&self) -> PathBuf {
+        account_db_path(&self.name)
+    }
+}
+
+/// Computes the TDLib database directory path for a given account name.
+///
+/// Returns `{data_dir}/tele-tui/accounts/{name}/tdlib_data`.
+pub fn account_db_path(account_name: &str) -> PathBuf {
+    let mut path = dirs::data_dir().unwrap_or_else(|| PathBuf::from("."));
+    path.push("tele-tui");
+    path.push("accounts");
+    path.push(account_name);
+    path.push("tdlib_data");
+    path
+}
+
+/// Validates an account name.
+///
+/// Valid names contain only lowercase alphanumeric characters, hyphens, and underscores.
+/// Must be 1-32 characters long.
+///
+/// # Errors
+///
+/// Returns a descriptive error message if the name is invalid.
+pub fn validate_account_name(name: &str) -> Result<(), String> {
+    if name.is_empty() {
+        return Err("Account name cannot be empty".to_string());
+    }
+    if name.len() > 32 {
+        return Err("Account name cannot be longer than 32 characters".to_string());
+    }
+    if !name
+        .chars()
+        .all(|c| c.is_ascii_lowercase() || c.is_ascii_digit() || c == '-' || c == '_')
+    {
+        return Err(
+            "Account name can only contain lowercase letters, digits, hyphens, and underscores"
+                .to_string(),
+        );
+    }
+    if name.starts_with('-') || name.starts_with('_') {
+        return Err("Account name cannot start with a hyphen or underscore".to_string());
+    }
+    Ok(())
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_validate_account_name_valid() {
+        assert!(validate_account_name("default").is_ok());
+        assert!(validate_account_name("work").is_ok());
+        assert!(validate_account_name("my-account").is_ok());
+        assert!(validate_account_name("account_2").is_ok());
+        assert!(validate_account_name("a").is_ok());
+    }
+
+    #[test]
+    fn test_validate_account_name_invalid() {
+        assert!(validate_account_name("").is_err());
+        assert!(validate_account_name("My Account").is_err());
+        assert!(validate_account_name("UPPER").is_err());
+        assert!(validate_account_name("with spaces").is_err());
+        assert!(validate_account_name("-starts-with-dash").is_err());
+        assert!(validate_account_name("_starts-with-underscore").is_err());
+        assert!(validate_account_name(&"a".repeat(33)).is_err());
+    }
+
+    #[test]
+    fn test_default_single_config() {
+        let config = AccountsConfig::default_single();
+        assert_eq!(config.default_account, "default");
+        assert_eq!(config.accounts.len(), 1);
+        assert_eq!(config.accounts[0].name, "default");
+    }
+
+    #[test]
+    fn test_find_account() {
+        let config = AccountsConfig::default_single();
+        assert!(config.find_account("default").is_some());
+        assert!(config.find_account("nonexistent").is_none());
+    }
+
+    #[test]
+    fn test_db_path_contains_account_name() {
+        let path = account_db_path("work");
+        let path_str = path.to_string_lossy();
+        assert!(path_str.contains("tele-tui"));
+        assert!(path_str.contains("accounts"));
+        assert!(path_str.contains("work"));
+        assert!(path_str.ends_with("tdlib_data"));
+    }
+}