use reqwest::StatusCode;
use serde::Deserialize;
use serde_json::json;
use smallvec::{smallvec, SmallVec};
use smartstring::alias::String as SmartString;
use teloxide::types::{ChatId, UserId};
use tracing::log;

use crate::{bots_manager::USER_LANGS_CACHE, config};

#[derive(Deserialize, Debug, Clone)]
pub struct Lang {
    // pub id: u32,
    pub label: SmartString,
    pub code: SmartString,
}

#[derive(Deserialize, Debug, Clone)]
pub struct UserSettings {
    pub user_id: u64,
    pub last_name: SmartString,
    pub first_name: SmartString,
    pub username: SmartString,
    pub source: SmartString,
    pub allowed_langs: SmallVec<[Lang; 3]>,
}

pub async fn get_user_settings(
    user_id: UserId,
) -> Result<Option<UserSettings>, Box<dyn std::error::Error + Send + Sync>> {
    let response = reqwest::Client::new()
        .get(format!(
            "{}/users/{}",
            &config::CONFIG.user_settings_url,
            user_id
        ))
        .header("Authorization", &config::CONFIG.user_settings_api_key)
        .send()
        .await?
        .error_for_status()?;

    if response.status() == StatusCode::NO_CONTENT {
        return Ok(None);
    }

    Ok(Some(response.json::<UserSettings>().await?))
}

pub async fn get_user_or_default_lang_codes(user_id: UserId) -> SmallVec<[SmartString; 3]> {
    if let Some(cached_langs) = USER_LANGS_CACHE.get(&user_id).await {
        return cached_langs;
    }

    let default_lang_codes = smallvec!["ru".into(), "be".into(), "uk".into()];

    match get_user_settings(user_id).await {
        Ok(v) => {
            let langs: SmallVec<[SmartString; 3]> = match v {
                Some(v) => v.allowed_langs.into_iter().map(|lang| lang.code).collect(),
                None => return default_lang_codes,
            };
            USER_LANGS_CACHE.insert(user_id, langs.clone()).await;
            langs
        }
        Err(err) => {
            log::error!("{:?}", err);
            default_lang_codes
        },
    }
}

pub async fn create_or_update_user_settings(
    user_id: UserId,
    last_name: String,
    first_name: String,
    username: String,
    source: String,
    allowed_langs: SmallVec<[SmartString; 3]>,
) -> Result<UserSettings, Box<dyn std::error::Error + Send + Sync>> {
    USER_LANGS_CACHE.invalidate(&user_id).await;

    let body = json!({
        "user_id": user_id,
        "last_name": last_name,
        "first_name": first_name,
        "username": username,
        "source": source,
        "allowed_langs": allowed_langs.into_vec()
    });

    let response = reqwest::Client::new()
        .post(format!("{}/users/", &config::CONFIG.user_settings_url))
        .body(body.to_string())
        .header("Authorization", &config::CONFIG.user_settings_api_key)
        .header("Content-Type", "application/json")
        .send()
        .await?
        .error_for_status()?;

    Ok(response.json::<UserSettings>().await?)
}

pub async fn get_langs() -> Result<Vec<Lang>, Box<dyn std::error::Error + Send + Sync>> {
    let response = reqwest::Client::new()
        .get(format!("{}/languages/", &config::CONFIG.user_settings_url))
        .header("Authorization", &config::CONFIG.user_settings_api_key)
        .send()
        .await?
        .error_for_status()?;

    Ok(response.json::<Vec<Lang>>().await?)
}

pub async fn update_user_activity(
    user_id: UserId,
) -> Result<(), Box<dyn std::error::Error + Send + Sync>> {
    reqwest::Client::new()
        .post(format!(
            "{}/users/{user_id}/update_activity",
            &config::CONFIG.user_settings_url
        ))
        .header("Authorization", &config::CONFIG.user_settings_api_key)
        .send()
        .await?
        .error_for_status()?;

    Ok(())
}

pub async fn is_need_donate_notifications(
    chat_id: ChatId,
    is_private: bool,
) -> Result<bool, Box<dyn std::error::Error + Send + Sync>> {
    let response = reqwest::Client::new()
        .get(format!(
            "{}/donate_notifications/{chat_id}/is_need_send?is_private={is_private}",
            &config::CONFIG.user_settings_url
        ))
        .header("Authorization", &config::CONFIG.user_settings_api_key)
        .send()
        .await?
        .error_for_status()?;

    Ok(response.json::<bool>().await?)
}

pub async fn mark_donate_notification_sent(
    chat_id: ChatId,
) -> Result<(), Box<dyn std::error::Error + Send + Sync>> {
    reqwest::Client::new()
        .post(format!(
            "{}/donate_notifications/{chat_id}",
            &config::CONFIG.user_settings_url
        ))
        .header("Authorization", &config::CONFIG.user_settings_api_key)
        .send()
        .await?
        .error_for_status()?;

    Ok(())
}