#[cfg(not(coverage))]
/// Keeps `parse_env_file` explicit because it sits on camera selection, where negotiated profiles must match the server output contract.
/// Inputs are the typed parameters; output is the return value or side effect.
fn parse_env_file(text: &str) -> HashMap<String, String> {
    let mut out = HashMap::new();
    for line in text.lines() {
        let line = line.trim();
        if line.is_empty() || line.starts_with('#') {
            continue;
        }
        let mut parts = line.splitn(2, '=');
        let key = match parts.next() {
            Some(v) => v.trim(),
            None => continue,
        };
        let val = match parts.next() {
            Some(v) => v.trim(),
            None => continue,
        };
        out.insert(key.to_string(), val.to_string());
    }
    out
}

pub(crate) fn read_u32_from_env(key: &str) -> Option<u32> {
    std::env::var(key).ok().and_then(|v| v.parse::<u32>().ok())
}

#[cfg(not(coverage))]
fn read_u32_from_map(map: &HashMap<String, String>, key: &str) -> Option<u32> {
    map.get(key).and_then(|v| v.parse::<u32>().ok())
}