use crate::{
    entity::prelude::Account,
    errors::NoUserInfo,
    handlers::{markups::deletion_markup, utils::package_handler, MainDialogue, State},
    models::DecryptedAccount,
};
use sea_orm::prelude::*;
use teloxide::{adaptors::Throttle, prelude::*};
use tokio::task::spawn_blocking;

/// Gets the name of the master password, encryptes the account and adds it to the DB
async fn get_master_pass(
    bot: Throttle<Bot>,
    msg: Message,
    db: DatabaseConnection,
    dialogue: MainDialogue,
    account: DecryptedAccount,
    master_pass: String,
) -> crate::Result<()> {
    let user_id = msg.from().ok_or(NoUserInfo)?.id.0;
    dialogue.exit().await?;
    let account = spawn_blocking(move || account.into_account(user_id, &master_pass)).await??;
    account.insert(&db).await?;
    bot.send_message(msg.chat.id, "Success")
        .reply_markup(deletion_markup())
        .await?;
    Ok(())
}

/// Gets the password of the account to add
async fn get_password(
    bot: Throttle<Bot>,
    msg: Message,
    _: DatabaseConnection,
    dialogue: MainDialogue,
    name: String,
    login: String,
    password: String,
) -> crate::Result<()> {
    let previous = bot
        .send_message(msg.chat.id, "Send master password")
        .await?;
    let account = DecryptedAccount {
        name,
        login,
        password,
    };
    dialogue
        .update(State::GetMasterPass(package_handler(
            move |bot, msg, db, dialogue, master_pass| {
                get_master_pass(bot, msg, db, dialogue, account, master_pass)
            },
            previous,
        )))
        .await?;
    Ok(())
}

/// Gets the login of the account to add
async fn get_login(
    bot: Throttle<Bot>,
    msg: Message,
    _: DatabaseConnection,
    dialogue: MainDialogue,
    name: String,
    login: String,
) -> crate::Result<()> {
    let previous = bot.send_message(msg.chat.id, "Send password").await?;
    dialogue
        .update(State::GetPassword(package_handler(
            move |bot, msg, db, dialogue, password| {
                get_password(bot, msg, db, dialogue, name, login, password)
            },
            previous,
        )))
        .await?;
    Ok(())
}

/// Gets the name of the account to add and checks that there're no accounts with the same name
async fn get_account_name(
    bot: Throttle<Bot>,
    msg: Message,
    db: DatabaseConnection,
    dialogue: MainDialogue,
    name: String,
) -> crate::Result<()> {
    let user_id = msg.from().ok_or(NoUserInfo)?.id.0;
    if Account::exists(user_id, &name, &db).await? {
        bot.send_message(msg.chat.id, "Account alreay exists")
            .reply_markup(deletion_markup())
            .await?;
        return Ok(());
    }
    let previous = bot.send_message(msg.chat.id, "Send login").await?;
    dialogue
        .update(State::GetLogin(package_handler(
            move |bot, msg, db, dialogue, login| get_login(bot, msg, db, dialogue, name, login),
            previous,
        )))
        .await?;
    Ok(())
}

/// Handles /add_account
pub async fn add_account(
    bot: Throttle<Bot>,
    msg: Message,
    dialogue: MainDialogue,
) -> crate::Result<()> {
    let previous = bot.send_message(msg.chat.id, "Send account name").await?;
    dialogue
        .update(State::GetAccountName(package_handler(
            get_account_name,
            previous,
        )))
        .await?;
    Ok(())
}