use std::{collections::HashMap, env};

use rocket::{http::CookieJar, response::Redirect};

use crate::{cookies::token::TOKEN_COOKIE, models::User, utils::Referer};

#[get("/logout")]
pub fn logout(cookies: &CookieJar<'_>, referer: Referer) -> Redirect {
    let token = match cookies.get_private(TOKEN_COOKIE) {
        Some(cookie) => cookie.value().to_owned(),
        None => return Redirect::to("/"),
    };
    rocket::tokio::spawn(async {
        let client = reqwest::Client::new();
        let params = {
            let mut params = HashMap::new();
            params.insert("client_id", env::var("CLIENT_ID").unwrap());
            params.insert("client_secret", env::var("CLIENT_SECRET").unwrap());
            params.insert("token", token);
            params
        };
        if let Err(error) = client
            .post("https://discord.com/api/oauth2/token/revoke")
            .header("Content-Type", "application/x-www-form-urlencoded")
            .form(&params)
            .send()
            .await
        {
            println!("Failed to revoke token: {:?}", error);
        }
    });
    User::purge(cookies);
    let redirect_url = referer.0.unwrap_or("/".to_owned());
    Redirect::to(redirect_url)
}