use anyhow::Result;

/// Resolve database URL from environment.
/// Priority: `SECRETS_DATABASE_URL` env var → error.
pub fn resolve_db_url(override_url: &str) -> Result<String> {
    if !override_url.is_empty() {
        return Ok(override_url.to_string());
    }

    if let Ok(url) = std::env::var("SECRETS_DATABASE_URL")
        && !url.is_empty()
    {
        return Ok(url);
    }

    anyhow::bail!(
        "Database not configured. Set the SECRETS_DATABASE_URL environment variable.\n\
         Example: SECRETS_DATABASE_URL=postgres://user:pass@host:port/dbname"
    )
}