//! Compile-time configuration ingested from `firmware/cfg.toml` via `toml-cfg`.
//!
//! Real values live in `cfg.toml` (gitignored); a `cfg.toml.example` shows the
//! shape. Defaults are empty strings on purpose — the firmware asserts
//! non-empty at boot so we panic loudly instead of silently trying to connect
//! to nothing.
//!
//! `mqtt_url` is a full URL so adding TLS later (`mqtts://host:8883`) is a
//! config-only change.

#[toml_cfg::toml_config]
pub struct Config {
    #[default("")]
    pub wifi_ssid: &'static str,
    #[default("")]
    pub wifi_password: &'static str,
    #[default("")]
    pub mqtt_url: &'static str,
    /// Base URL the device fetches OTA images from. The full image URL is
    /// `<ota_url_base>/sound-machine-<version>.bin`. Trailing slash is
    /// stripped at use-time so either form works.
    #[default("")]
    pub ota_url_base: &'static str,
}