use gio::prelude::*;
use gtk::prelude::*;
use gtk::Orientation;
use std::env::args;
use std::process::Command;

const SPACING: i32 = 16;

fn build_ui(application: &gtk::Application) {
    let window = gtk::ApplicationWindow::new(application);

    window.set_title("youtube-dl");
    window.set_border_width(SPACING as u32);
    window.set_position(gtk::WindowPosition::Center);
    window.set_default_size(400, 100);

    let vertical = gtk::Box::new(Orientation::Vertical, SPACING);
    let input_url = gtk::Entry::new();
    let horizontal = gtk::Box::new(Orientation::Horizontal, SPACING);
    let convert_to_mp3 = gtk::CheckButton::with_label("convert to mp3");
    let button = gtk::Button::with_label("Go!");

    input_url.set_placeholder_text(Some("Enter URL here"));

    horizontal.set_spacing(SPACING);
    horizontal.set_homogeneous(true);

    window.add(&vertical);

    vertical.add(&input_url);
    vertical.add(&horizontal);

    horizontal.add(&convert_to_mp3);
    horizontal.add(&button);

    window.show_all();

    button.connect_clicked(move |_| {
        let url = input_url.get_buffer().get_text();
        println!("url: {}", url);
        let mut youtube_dl = Command::new("youtube-dl");

        if convert_to_mp3.get_active() {
            println!("convert to mp3: true");
            youtube_dl.arg("--extract-audio");
            youtube_dl.arg("--audio-format");
            youtube_dl.arg("mp3");
        }

        youtube_dl.arg("--output");
        youtube_dl.arg("~/Downloads/%(title)s.%(ext)s");
        youtube_dl.arg(url);

        let output = youtube_dl.output().expect("failed to execute process");
        println!("exit status: {:#?}", output);
    });
}

fn main() {
    let application = gtk::Application::new(
        Some("dev.tinybird.max.youtube-dl-gtk"),
        Default::default()
    ).expect("Initialization failed...");

    application.connect_activate(|app| {
        build_ui(app);
    });

    application.run(&args().collect::<Vec<_>>());
}