use async_trait::async_trait;
use telers::{
    errors::{EventErrorKind, HandlerError},
    event::telegram::{HandlerRequest, HandlerResponse},
    middlewares::{InnerMiddleware, Next},
};

use anyhow::Error as Reject;

use crate::{
    types::structs::message_sender::MessageSender,
    utils::telegram::{admin_check::is_admin, data_getters::get_all_admins},
};

#[derive(Default)]
pub struct AdminCheck {}

#[async_trait]
impl InnerMiddleware for AdminCheck {
    async fn call(
        &self,
        request: HandlerRequest,
        next: Next,
    ) -> Result<HandlerResponse, EventErrorKind> {
        let (bot, message) = (request.clone().bot, request.clone().update);

        let admins_list = get_all_admins(&bot, message.chat().unwrap().id())
            .await
            .unwrap();

        let chat_id: i64 = message.chat_id().unwrap();

        if is_admin(&admins_list, message.from().unwrap().id) {
            let response = next(request).await?;
            return Ok(response);
        } else {
            MessageSender::builder(chat_id)
                .text("Недостаточно прав для использования данной команды.")
                .build()
                .send(&bot)
                .await
                .unwrap();

            return Err(EventErrorKind::Handler(HandlerError::new(Reject::msg(
                "User isn't admin.".to_string(),
            ))));
        }
    }
}