Function load_edge_token

crates/openshell-bootstrap/src/edge_token.rs:43–69

Load a stored edge authentication token for a gateway. Returns `None` if no token file exists or the file is empty. Falls back to the legacy `cf_token` path for backwards compatibility. When loading from the legacy path, migrates the token to the new path with proper permissions.

(gateway_name: &str)

/// When loading from the legacy path, migrates the token to the new path
/// with proper permissions.
pub fn load_edge_token(gateway_name: &str) -> Option<String> {
    // Try the new path first.
    if let Some(path) = edge_token_path(gateway_name).ok().filter(|p| p.exists()) {
        let contents = std::fs::read_to_string(&path).ok()?;
        let token = contents.trim().to_string();
        if !token.is_empty() {
            return Some(token);
        }
    }

    // Fall back to the legacy cf_token path.
    let legacy_path = legacy_token_path(gateway_name)
        .ok()
        .filter(|p| p.exists())?;
    let contents = std::fs::read_to_string(&legacy_path).ok()?;
    let token = contents.trim().to_string();
    if token.is_empty() {
        return None;
    }

    // Migrate: write to new path with proper permissions, then remove legacy.
    if store_edge_token(gateway_name, &token).is_ok() {
        let _ = std::fs::remove_file(&legacy_path);
    }

    Some(token)
}

/// Remove a stored edge authentication token.
pub fn remove_edge_token(gateway_name: &str) -> Result<()> {