mod default;
mod delete_mesage_handler;
mod filter_user_info;
mod master_password_check;

use crate::{
    callbacks::{self, CallbackCommand},
    commands::{self, Command},
    errors, locales,
    prelude::*,
    state::{self, State},
};
use teloxide::{
    adaptors::throttle::Limits,
    dispatching::{DefaultKey, dialogue::InMemStorage, filter_command},
    dptree::{case, deps},
};

pub fn get_dispatcher(
    token: String,
    db: Pool,
) -> Dispatcher<Throttle<Bot>, crate::Error, DefaultKey> {
    let client = teloxide::net::default_reqwest_settings()
        .https_only(true)
        .build()
        .expect("Failed to create reqwest Client");
    let bot = Bot::with_client(token, client).throttle(Limits::default());

    let command_handler = filter_command::<Command, _>()
        .branch(case![Command::Start].endpoint(commands::start))
        .branch(case![Command::Help].endpoint(commands::help))
        .branch(case![Command::SetMasterPass].endpoint(commands::set_master_pass))
        .branch(case![Command::GenPassword].endpoint(commands::gen_password))
        .branch(case![Command::Cancel].endpoint(commands::cancel))
        // This branch filters out the users that don't have a master password set
        .branch(master_password_check::get_handler())
        .branch(case![Command::Menu].endpoint(commands::menu))
        .branch(case![Command::AddAccount].endpoint(commands::add_account))
        .branch(case![Command::GetAccount].endpoint(commands::get_account))
        .branch(case![Command::GetAccounts].endpoint(commands::get_accounts))
        .branch(case![Command::Delete].endpoint(commands::delete))
        .branch(case![Command::DeleteAll].endpoint(commands::delete_all))
        .branch(case![Command::Export].endpoint(commands::export))
        .branch(case![Command::Import].endpoint(commands::import))
        .chain(case![Command::ChangeLanguage].endpoint(commands::change_language));

    let message_handler = Update::filter_message()
        .map_async(delete_mesage_handler::delete_message)
        // Filters out the messages without user information
        .branch(filter_user_info::get_handler())
        .branch(case![State::GetNewName(next)].endpoint(state::get_new_name))
        .branch(case![State::GetMasterPass(next)].endpoint(state::get_master_pass))
        .branch(case![State::GetNewMasterPass(next)].endpoint(state::get_new_master_pass))
        .branch(case![State::GetLogin(next)].endpoint(state::get_login))
        .branch(case![State::GetPassword(next)].endpoint(state::get_password))
        .branch(case![State::GetUser(next)].endpoint(state::get_user))
        .branch(command_handler)
        .endpoint(default::default);

    let callback_handler = Update::filter_callback_query()
        .filter_map(CallbackCommand::from_query)
        .branch(case![CallbackCommand::DeleteMessage].endpoint(callbacks::delete_message))
        .branch(master_password_check::get_handler())
        .branch(case![CallbackCommand::GetMenu].endpoint(callbacks::get_menu))
        .branch(case![CallbackCommand::Get(hash)].endpoint(callbacks::get))
        .branch(case![CallbackCommand::Decrypt(hash)].endpoint(callbacks::decrypt))
        .branch(
            case![CallbackCommand::DeleteAccount { name, is_command }].endpoint(callbacks::delete),
        )
        .branch(case![CallbackCommand::Alter(hash, field)].endpoint(callbacks::alter))
        .chain(case![CallbackCommand::ChangeLocale(locale)].endpoint(callbacks::change_locale));

    let handler = dptree::map_async(locales::Locale::from_update)
        .enter_dialogue::<Update, InMemStorage<State>, State>()
        .branch(message_handler)
        .chain(callback_handler);

    Dispatcher::builder(bot, handler)
        .dependencies(deps![db, InMemStorage::<State>::new()])
        .error_handler(std::sync::Arc::from(errors::ErrorHandler))
        .enable_ctrlc_handler()
        .build()
}