use config::{Config, ConfigError, Environment};
use serde::Deserialize;

#[derive(Debug, Deserialize)]
pub struct AppConfig {
    pub server_port: u16,
    pub project_root: String,
}

impl AppConfig {
    pub fn load() -> Result<Self, ConfigError> {
        let config = Config::builder()
            .set_default("server_port", 8080)?
            .set_default("project_root", "/workspace")?
            .add_source(Environment::default().separator("__"))
            .build()?;
        config.try_deserialize()
    }
}