//! Runtime configuration: HTTP bind, DB path, server domain, sig-server
//! URL. Read from CLI flags and/or environment variables.

use std::net::SocketAddr;
use std::path::PathBuf;

use clap::Parser;

#[derive(Debug, Parser, Clone)]
#[command(name = "kez-chat-server")]
#[command(about = "KEZ chat home server — handle registry + NATS auth + static SPA")]
pub struct Config {
    /// HTTP bind address.
    #[arg(long, env = "KEZ_CHAT_BIND", default_value = "0.0.0.0:6969")]
    pub bind: SocketAddr,

    /// SQLite database file for the handle registry.
    #[arg(long, env = "KEZ_CHAT_DB", default_value = "kez-chat.db")]
    pub db: PathBuf,

    /// This server's domain. Handles registered here belong to
    /// `<handle>@<server>`. Used to validate registrations and
    /// answer WebFinger queries.
    #[arg(long, env = "KEZ_CHAT_SERVER", default_value = "kez.lat")]
    pub server: String,

    /// Base URL of the sig-server users should publish their sigchains to.
    /// Returned in handle-lookup responses so clients know where to fetch.
    #[arg(
        long,
        env = "KEZ_CHAT_SIG_SERVER_URL",
        default_value = "http://localhost:7878"
    )]
    pub sig_server_url: String,

    /// Optional directory of static files to serve at `/` (the SPA build
    /// output). If unset, `/` serves a built-in placeholder page.
    #[arg(long, env = "KEZ_CHAT_WEB_DIR")]
    pub web_dir: Option<PathBuf>,
}