use anyhow::Result;
use config::{Config, Environment, File};
use serde::Deserialize;
use std::{env, net::SocketAddr};

#[derive(Debug, Deserialize, Clone)]
pub struct Database {
    pub url: String,
}

#[derive(Debug, Deserialize, Clone)]
pub struct App {
    pub listen: SocketAddr,
    pub public_url: String,
}

#[derive(Debug, Deserialize, Clone)]
pub struct Email {
    pub server: String,
    pub port: Option<u16>,
    pub username: String,
    pub password: String,
    pub sender: String,
    pub cert: Option<String>,
}

#[derive(Debug, Deserialize, Clone)]
#[allow(unused)]
pub struct Conf {
    pub debug: bool,
    pub database: Database,
    pub app: App,
    pub email: Option<Email>,
}

impl Conf {
    pub fn read() -> Result<Self> {
        let mode = env::var("DEPLOYMENT_ENVIRONMENT").unwrap_or_else(|_| "dev".into());

        println!("mode: {mode}");

        let s = Config::builder()
            .add_source(File::with_name("conf/default"))
            .add_source(File::with_name(&format!("conf/{mode}")).required(false))
            .add_source(File::with_name("conf/secrets").required(false))
            .add_source(Environment::with_prefix("z2a"))
            .build()?;

        Ok(s.try_deserialize()?)
    }
}