use log::warn;
use std::env;

lazy_static! {
    // General Configuration
    pub static ref MONGO_URI: String =
        env::var("REVOLT_MONGO_URI").expect("Missing REVOLT_MONGO_URI environment variable.");
    pub static ref PUBLIC_URL: String =
        env::var("REVOLT_PUBLIC_URL").expect("Missing REVOLT_PUBLIC_URL environment variable.");
    
    // Application Flags
    pub static ref DISABLE_REGISTRATION: bool = env::var("REVOLT_DISABLE_REGISTRATION").map_or(false, |v| v == "*1");
    pub static ref USE_EMAIL: bool = env::var("REVOLT_USE_EMAIL_VERIFICATION").map_or(
        env::var("REVOLT_SMTP_HOST").is_ok()
            && env::var("REVOLT_SMTP_USERNAME").is_ok()
            && env::var("REVOLT_SMTP_PASSWORD").is_ok()
            && env::var("REVOLT_SMTP_FROM").is_ok(),
        |v| v == *"1"
    );
    pub static ref USE_HCAPTCHA: bool = env::var("REVOLT_HCAPTCHA_KEY").is_ok();

    // SMTP Settings
    pub static ref SMTP_HOST: String =
        env::var("REVOLT_SMTP_HOST").unwrap_or_else(|_| "".to_string());
    pub static ref SMTP_USERNAME: String =
        env::var("SMTP_USERNAME").unwrap_or_else(|_| "".to_string());
    pub static ref SMTP_PASSWORD: String =
        env::var("SMTP_PASSWORD").unwrap_or_else(|_| "".to_string());
    pub static ref SMTP_FROM: String = env::var("SMTP_FROM").unwrap_or_else(|_| "".to_string());

    // Application Settings
    pub static ref HCAPTCHA_KEY: String =
        env::var("REVOLT_HCAPTCHA_KEY").unwrap_or_else(|_| "".to_string());
    pub static ref WS_HOST: String =
        env::var("REVOLT_WS_HOST").unwrap_or_else(|_| "0.0.0.0:9999".to_string());
}

pub fn preflight_checks() {
    if *USE_EMAIL == false {
        #[cfg(not(debug_assertions))]
        {
            if !env::var("REVOLT_UNSAFE_NO_EMAIL")
                .map_or(false, |v| v == *"1") {
                panic!(
                    "Not letting you run this in production, set REVOLT_UNSAFE_NO_EMAIL=1 to run."
                );
            }
        }

        #[cfg(debug_assertions)]
        warn!("No SMTP settings specified! Remember to configure email.");
    }

    if *USE_HCAPTCHA == false {
        #[cfg(not(debug_assertions))]
        {
            if !env::var("REVOLT_UNSAFE_NO_CAPTCHA")
                .map_or(false, |v| v == *"1") {
                panic!("Not letting you run this in production, set REVOLT_UNSAFE_NO_CAPTCHA=1 to run.");
            }
        }

        #[cfg(debug_assertions)]
        warn!("No Captcha key specified! Remember to add hCaptcha key.");
    }
}