use ratatui::backend::CrosstermBackend;
use ratatui::Terminal;
use std::io;
use std::path::PathBuf;

use structopt::StructOpt;

use musichoard::{
    collection::MhCollectionManager,
    database::json::{JsonDatabase, JsonDatabaseFileBackend},
    library::beets::{BeetsLibrary, BeetsLibraryCommandExecutor},
};

mod tui;
use tui::{
    app::App, event::EventChannel, handler::TuiEventHandler, listener::TuiEventListener, ui::Ui,
    Tui,
};

#[derive(StructOpt)]
struct Opt {
    #[structopt(
        short = "b",
        long = "beets",
        name = "beets config file path",
        parse(from_os_str)
    )]
    beets_config_file_path: Option<PathBuf>,

    #[structopt(
        short = "d",
        long = "database",
        name = "database file path",
        default_value = "database.json",
        parse(from_os_str)
    )]
    database_file_path: PathBuf,
}

fn main() {
    // Create the application.
    let opt = Opt::from_args();

    let beets = BeetsLibrary::new(Box::new(
        BeetsLibraryCommandExecutor::default().config(opt.beets_config_file_path.as_deref()),
    ));

    let database = JsonDatabase::new(Box::new(JsonDatabaseFileBackend::new(
        &opt.database_file_path,
    )));

    let collection_manager = MhCollectionManager::new(Box::new(beets), Box::new(database));

    // Initialize the terminal user interface.
    let backend = CrosstermBackend::new(io::stdout());
    let terminal = Terminal::new(backend).expect("failed to initialise terminal");

    let channel = EventChannel::new();
    let listener = TuiEventListener::new(channel.sender());
    let handler = TuiEventHandler::new(channel.receiver());

    let ui = Ui::new();

    let app = App::new(Box::new(collection_manager)).expect("failed to initialise app");

    // Run the TUI application.
    Tui::run(terminal, app, ui, handler, listener).expect("failed to run tui");
}

#[cfg(test)]
#[macro_use]
mod testlib;

#[cfg(test)]
mod tests {
    use mockall::mock;
    use once_cell::sync::Lazy;

    use musichoard::collection::{self, Collection, CollectionManager};
    use musichoard::*;

    pub static COLLECTION: Lazy<Vec<Artist>> = Lazy::new(|| collection!());

    mock! {
        pub CollectionManager {}

        impl CollectionManager for CollectionManager {
            fn rescan_library(&mut self) -> Result<(), collection::Error>;
            fn save_to_database(&mut self) -> Result<(), collection::Error>;
            fn get_collection(&self) -> &Collection;
        }
    }
}