use clap::Parser;

/// Runtime configuration, sourced from CLI arguments and environment variables.
#[derive(Debug, Clone, Parser)]
#[command(version, about = "Collection management system server")]
pub struct Config {
    /// PostgreSQL connection string.
    #[arg(long, env = "DATABASE_URL")]
    pub database_url: String,

    /// Address to bind the HTTP server to.
    #[arg(long, env = "BIND_ADDR", default_value = "0.0.0.0:8080")]
    pub bind_addr: String,

    /// User-facing application name (OpenAPI title, page title, …).
    ///
    /// Defaults to a neutral name; set this to the real product name at deploy
    /// time. The product name must never be hardcoded in source.
    #[arg(long, env = "APP_NAME", default_value = "Collection Management System")]
    pub app_name: String,
}