I don't wanna die, I don't wanna die

assets/ui/first_run.blp

@@ -0,0 +1,265 @@
+using Gtk 4.0;
+using Adw 1;
+
+Adw.ApplicationWindow window {
+    default-width: 780;
+    default-height: 560;
+
+    content: Gtk.Box {
+        orientation: vertical;
+
+        Adw.HeaderBar {
+            title-widget: Adw.WindowTitle {
+                title: "An Anime Game Launcher";
+            };
+        }
+
+        Adw.Carousel carousel {
+            allow-mouse-drag: false;
+
+            // First page (welcome message)
+
+            Gtk.Box first_page {
+                orientation: vertical;
+                hexpand: true;
+
+                Adw.PreferencesPage {
+                    Adw.PreferencesGroup {
+                        Gtk.Image {
+                            resource: "/org/app/assets/images/icon.png";
+
+                            vexpand: true;
+                            margin-top: 16;
+                        }
+
+                        Gtk.Label {
+                            label: "An Anime Game Launcher";
+                            margin-top: 32;
+
+                            styles ["title-1"]
+                        }
+
+                        Gtk.Label {
+                            label: "Hi there! Welcome to the An Anime Game Launcher. We need to prepare some stuff and download default components before you could run the game";
+
+                            wrap: true;
+                            justify: center;
+                            margin-top: 32;
+                        }
+                    }
+
+                    Adw.PreferencesGroup {
+                        vexpand: true;
+                        valign: center;
+
+                        Gtk.Box {
+                            orientation: horizontal;
+                            spacing: 8;
+                            halign: center;
+
+                            Gtk.Button first_page_continue {
+                                label: "Continue";
+
+                                styles ["suggested-action"]
+                            }
+
+                            Gtk.Button {
+                                label: "Advanced";
+                                sensitive: false;
+                            }
+                        }
+                    }
+                }
+            }
+
+            // Second page (warning message)
+
+            Gtk.Box second_page {
+                orientation: vertical;
+                hexpand: true;
+
+                Adw.PreferencesPage {
+                    Adw.PreferencesGroup {
+                        Gtk.Label {
+                            label: "ToS violation warning";
+                            margin-top: 8;
+
+                            styles ["title-1"]
+                        }
+
+                        Gtk.Box {
+                            orientation: vertical;
+                            margin-top: 32;
+                            spacing: 12;
+
+                            Gtk.Label {
+                                label: "This launcher is an unofficial tool, in no way related to miHoYo nor COGNOSPHERE.";
+
+                                wrap: true;
+                                halign: start;
+                            }
+
+                            Gtk.Label {
+                                label: "This tool is designed to facilitate playing Genshin Impact on Linux, and was built with the sole purpose of installing and running the game with less hassle.";
+
+                                wrap: true;
+                                halign: start;
+                            }
+
+                            Gtk.Label {
+                                label: "It does so by using existing components and making the experience simple for the user.";
+
+                                wrap: true;
+                                halign: start;
+                            }
+
+                            Gtk.Label {
+                                label: "However, some components used here likely break the miHoYo Terms of Service for Genshin Impact.";
+
+                                wrap: true;
+                                halign: start;
+                            }
+
+                            Gtk.Label {
+                                label: "If you are using this launcher, your player account could become identified as TOS-non-compliant by miHoYo/COGNOSPHERE.";
+
+                                wrap: true;
+                                halign: start;
+                            }
+
+                            Gtk.Label {
+                                label: "If this happens, as your account would be disobeying TOS, miHoYo/COGNOSPHERE are free to do what they want. Including banning.";
+
+                                wrap: true;
+                                halign: start;
+                            }
+
+                            Gtk.Label {
+                                label: "If you understand the risk of trying to play the game in an unofficial capacity, press OK and let's go researching the world of Teyvat!";
+
+                                wrap: true;
+                                halign: start;
+                            }
+                        }
+                    }
+
+                    Adw.PreferencesGroup {
+                        vexpand: true;
+                        valign: center;
+
+                        Gtk.Box {
+                            orientation: horizontal;
+                            spacing: 8;
+                            halign: center;
+
+                            Gtk.Button second_page_continue {
+                                label: "Continue";
+
+                                styles ["suggested-action"]
+                            }
+
+                            Gtk.Button second_page_exit {
+                                label: "Exit";
+                            }
+                        }
+                    }
+                }
+            }
+
+            // Third page (downloading components)
+
+            Gtk.Box third_page {
+                orientation: vertical;
+                hexpand: true;
+
+                Adw.PreferencesPage {
+                    Adw.PreferencesGroup {
+                        Gtk.Label {
+                            label: "Download default components";
+                            margin-top: 16;
+
+                            styles ["title-1"]
+                        }
+                    }
+
+                    Adw.PreferencesGroup {
+                        vexpand: true;
+                        valign: center;
+
+                        Adw.ComboRow third_page_wine_version {
+                            title: "Wine version";
+
+                            model: Gtk.StringList {
+                                strings [
+                                    "Wine-GE-Proton 7-22"
+                                ]
+                            };
+                        }
+
+                        Adw.ComboRow third_page_dxvk_version {
+                            title: "DXVK version";
+
+                            model: Gtk.StringList {
+                                strings [
+                                    "dxvk-1.10.2"
+                                ]
+                            };
+                        }
+                    }
+
+                    Adw.PreferencesGroup third_page_buttons_group {
+                        vexpand: true;
+                        valign: center;
+
+                        Gtk.Box {
+                            orientation: horizontal;
+                            spacing: 8;
+                            halign: center;
+
+                            Gtk.Button third_page_download {
+                                label: "Download";
+
+                                styles ["suggested-action"]
+                            }
+
+                            Gtk.Button third_page_exit {
+                                label: "Exit";
+                            }
+                        }
+                    }
+
+                    Adw.PreferencesGroup third_page_progress_bar_group {
+                        vexpand: true;
+                        valign: center;
+                        visible: false;
+
+                        Gtk.Box {
+                            halign: center;
+                            margin-top: 64;
+                            spacing: 20;
+
+                            Gtk.ProgressBar third_page_progress_bar {
+                                text: "Downloading: 37% (3.7 of 10 GB)";
+                                show-text: true;
+
+                                width-request: 260;
+                                fraction: 0.37;
+                                valign: center;
+                            }
+
+                            Gtk.Button {
+                                label: "Pause";
+                                sensitive: false;
+                            }
+                        }
+                    }
+                }
+            }
+        }
+
+        Adw.CarouselIndicatorDots {
+            carousel: carousel;
+            height-request: 32;
+        }
+    };
+}

assets/ui/main.blp

@@ -102,6 +102,7 @@ Adw.ApplicationWindow window {
 
                             Gtk.Button {
                                 label: "Pause";
+                                sensitive: false;
                             }
                         }
                     }

src/lib/launcher/executors/create_prefix.rs

@@ -0,0 +1,34 @@
+use std::io::Error;
+
+use wait_not_await::Await;
+
+use crate::ui::components::progress_bar::ProgressBar;
+
+use crate::lib::wine_prefix::WinePrefix;
+use crate::lib::config::Config;
+
+pub fn create_prefix(config: Config, progress_bar: ProgressBar) -> Await<Result<(), (String, Error)>> {
+    Await::new(move || {
+        // Create prefix if needed
+        let prefix = WinePrefix::new(&config.game.wine.prefix);
+
+        if !prefix.exists() {
+            progress_bar.update(0.0, Some("Creating prefix..."));
+
+            match config.try_get_selected_wine_info() {
+                Some(wine_version) => match prefix.update(&config.game.wine.builds, wine_version) {
+                    Ok(_) => Ok(()),
+                    Err(err) => Err((String::from("Failed to create prefix"), err))
+                },
+                None => {
+                    // TODO: download default wine
+                    todo!()
+                }
+            }
+        }
+
+        else {
+            Ok(())
+        }
+    })
+}

src/lib/launcher/executors/download_diff.rs

@@ -0,0 +1,64 @@
+use std::io::Error;
+
+use anime_game_core::prelude::*;
+use wait_not_await::Await;
+
+use crate::ui::components::progress_bar::ProgressBar;
+use crate::lib::prettify_bytes::prettify_bytes;
+
+/*pub fn download_diff(diff: &VersionDiff, progress_bar: ProgressBar, suffix: Option<String>) -> Await<Result<(), (String, Error)>> {
+    let (send, recv) = std::sync::mpsc::channel();
+
+    diff.install(move |state| {
+        match state {
+            InstallerUpdate::DownloadingStarted(_) => progress_bar.update(0.0, Some("Downloading...")),
+
+            InstallerUpdate::DownloadingProgress(curr, total) => {
+                // To reduce amount of action requests
+                // if curr % 10000 < 200 {
+                    let progress = curr as f64 / total as f64;
+
+                    progress_bar.update(progress, Some(&format!(
+                        "Downloading{}: {:.2}% ({} of {})",
+                        if let Some(suffix) = suffix { format!(" {}", suffix) } else { String::new() },
+                        progress * 100.0,
+                        prettify_bytes(curr),
+                        prettify_bytes(total)
+                    )));
+                // }
+            }
+
+            InstallerUpdate::UnpackingStarted(_) => progress_bar.update(0.0, Some("Unpacking...")),
+
+            InstallerUpdate::UnpackingProgress(curr, total) => {
+                let progress = curr as f64 / total as f64;
+
+                progress_bar.update(progress, Some(&format!(
+                    "Unpacking{}: {:.2}% ({} of {})",
+                    if let Some(suffix) = suffix { format!(" {}", suffix) } else { String::new() },
+                    progress * 100.0,
+                    prettify_bytes(curr),
+                    prettify_bytes(total)
+                )));
+            }
+
+            InstallerUpdate::DownloadingFinished => (),
+
+            InstallerUpdate::UnpackingFinished => {
+                send.send(Ok(()));
+            },
+
+            InstallerUpdate::DownloadingError(err) => {
+                send.send(Err((String::from("Failed to download"), err.into())));
+            }
+
+            InstallerUpdate::UnpackingError => {
+                send.send(Err((String::from("Failed to unpack"), Error::last_os_error())));
+            }
+        }
+    });
+
+    Await::new(move || {
+        recv.recv().unwrap()
+    })
+}*/

src/lib/launcher/executors/mod.rs

@@ -0,0 +1,32 @@
+mod create_prefix;
+mod download_diff;
+
+pub use create_prefix::*;
+pub use download_diff::*;
+
+use crate::lib::config;
+use crate::lib::wine_prefix::WinePrefix;
+
+#[derive(Debug, Clone, Copy)]
+pub enum Component {
+    Wine,
+    DXVK,
+    Prefix
+}
+
+#[derive(Debug, Clone)]
+pub struct ComponentsChain {
+    pub chain: Vec<Component>
+}
+
+impl ComponentsChain {
+    pub fn get() -> std::io::Result<Self> {
+        let config = config::get()?;
+
+        let wine_prefix = WinePrefix::new(&config.game.wine.prefix);
+
+
+
+        todo!();
+    }
+}

src/lib/launcher/mod.rs

@@ -1 +1,2 @@
 pub mod states;
+pub mod executors;

src/lib/launcher/states.rs

@@ -4,8 +4,11 @@ use libadwaita::{self as adw, prelude::*};
 use std::io::{Error, ErrorKind};
 
 use anime_game_core::prelude::*;
+use wait_not_await::Await;
 
+use crate::ui::components::progress_bar::ProgressBar;
 use crate::lib::config;
+use crate::lib::prettify_bytes::prettify_bytes;
 
 #[derive(Debug, Clone)]
 pub enum LauncherState {
@@ -102,4 +105,171 @@ impl LauncherState {
             VersionDiff::NotInstalled { .. } => Self::GameNotInstalled(diff)
         })
     }
+
+    /*pub fn execute(&self, progress_bar: &ProgressBar) -> Await<Result<(), (&str, Error)>> {
+        match self {
+            Self::Launch => {
+                // Display toast message if the game is failed to run
+                /*if let Err(err) = game::run(false) {
+                    this.toast_error("Failed to run game", err);
+                }*/
+
+                todo!();
+            },
+
+            Self::PatchAvailable(_) => todo!(),
+
+            Self::VoiceUpdateAvailable(diff) |
+            Self::VoiceNotInstalled(diff) |
+            Self::GameUpdateAvailable(diff) |
+            Self::GameNotInstalled(diff) => {
+                // this.update(Actions::DownloadDiff(Rc::new(diff))).unwrap();
+
+                // Download wine version if not installed
+                match WineVersion::latest() {
+                    Ok(wine) => match Installer::new(wine.uri) {
+                        Ok(mut installer) => {
+                            let (send, recv) = std::sync::mpsc::channel();
+                            let wine_title = wine.title.clone();
+
+                            installer.install(&config.game.wine.builds, clone!(@strong this => move |state| {
+                                match state {
+                                    InstallerUpdate::UnpackingFinished => {
+                                        send.send(true).unwrap();
+                                    }
+
+                                    InstallerUpdate::DownloadingError(_) |
+                                    InstallerUpdate::UnpackingError => {
+                                        send.send(false).unwrap();
+                                    }
+
+                                    _ => ()
+                                }
+
+                                this.update(Actions::UpdateProgressByState(Rc::new((state, Some(wine_title.clone()))))).unwrap();
+                            }));
+
+                            // Block thread until downloading finished
+                            if recv.recv().unwrap() {
+                                config.game.wine.selected = Some(wine.name);
+
+                                config::update(config.clone());
+                            }
+
+                            else {
+                                println!("I'm tired, Boss!");
+
+                                return;
+                            }
+                        },
+                        Err(err) => {
+                            toast_error(&this, "Failed to init wine version installer", err.into());
+
+                            return;
+                        }
+                    },
+                    Err(err) => {
+                        toast_error(&this, "Failed to load wine versions list", err.into());
+
+                        return;
+                    }
+                }
+
+                // Create prefix if needed
+                let prefix = WinePrefix::new(&config.game.wine.prefix);
+
+                if !prefix.exists() {
+                    this.update(Actions::UpdateProgress {
+                        fraction: Rc::new(0.0),
+                        title: Rc::new(String::from("Creating prefix..."))
+                    }).unwrap();
+
+                    match config.try_get_selected_wine_info() {
+                        Some(wine_version) => {
+                            if let Err(err) = prefix.update(&config.game.wine.builds, wine_version) {
+                                toast_error(&this, "Failed to create wineprefix", err);
+
+                                return;
+                            }
+                        },
+                        None => return
+                    }
+                }
+
+                // Download and apply DXVK if not installed
+                match DxvkVersion::latest() {
+                    Ok(dxvk) => match Installer::new(&dxvk.uri) {
+                        Ok(mut installer) => {
+                            let (send, recv) = std::sync::mpsc::channel();
+                            let dxvk_title = dxvk.name.clone();
+
+                            installer.install(&config.game.dxvk.builds, clone!(@strong this => move |state| {
+                                match state {
+                                    InstallerUpdate::UnpackingFinished => {
+                                        send.send(true).unwrap();
+                                    }
+
+                                    InstallerUpdate::DownloadingError(_) |
+                                    InstallerUpdate::UnpackingError => {
+                                        send.send(false).unwrap();
+                                    }
+
+                                    _ => ()
+                                }
+
+                                this.update(Actions::UpdateProgressByState(Rc::new((state, Some(dxvk_title.clone()))))).unwrap();
+                            }));
+
+                            // Block thread until downloading finished
+                            if recv.recv().unwrap() {
+                                config.game.dxvk.selected = Some(dxvk.name.clone());
+
+                                config::update(config.clone());
+                            }
+
+                            else {
+                                return;
+                            }
+
+                            // Apply DXVK
+                            this.update(Actions::UpdateProgress {
+                                fraction: Rc::new(100.0),
+                                title: Rc::new(String::from("Applying DXVK..."))
+                            }).unwrap();
+
+                            match dxvk.apply(&config.game.dxvk.builds, &config.game.wine.prefix) {
+                                Ok(_) => {
+                                    config.game.dxvk.selected = Some(dxvk.name);
+                                    
+                                    config::update(config.clone());
+                                },
+                                Err(err) => {
+                                    toast_error(&this, "Failed to apply DXVK", err);
+
+                                    return;
+                                }
+                            }
+                        },
+                        Err(err) => {
+                            toast_error(&this, "Failed to init wine version installer", err.into());
+
+                            return;
+                        }
+                    },
+                    Err(err) => {
+                        toast_error(&this, "Failed to load wine versions list", err.into());
+
+                        return;
+                    }
+                }
+
+                todo!();
+            },
+
+            Self::GameOutdated(_) => (),
+            Self::VoiceOutdated(_) => ()
+        }
+
+        todo!();
+    }*/
 }

src/lib/mod.rs

@@ -6,3 +6,4 @@ pub mod dxvk;
 pub mod wine;
 pub mod wine_prefix;
 pub mod launcher;
+pub mod prettify_bytes;

src/lib/prettify_bytes.rs

@@ -0,0 +1,17 @@
+pub fn prettify_bytes(bytes: u64) -> String {
+    if bytes > 1024 * 1024 * 1024 {
+        format!("{:.2} GB", bytes as f64 / 1024.0 / 1024.0 / 1024.0)
+    }
+
+    else if bytes > 1024 * 1024 {
+        format!("{:.2} MB", bytes as f64 / 1024.0 / 1024.0)
+    }
+
+    else if bytes > 1024 {
+        format!("{:.2} KB", bytes as f64 / 1024.0)
+    }
+
+    else {
+        format!("{:.2} B", bytes)
+    }
+}

src/lib/wine_prefix.rs

@@ -1,6 +1,7 @@
 use std::path::Path;
 use std::process::Command;
 
+#[derive(Debug, Clone)]
 pub struct WinePrefix {
     pub path: String
 }
@@ -17,8 +18,8 @@ impl WinePrefix {
     fn wineboot<T: ToString>(&self, runners_folder: T, runner: super::wine::Version, command: &str) -> std::io::Result<()> {
         let runners_folder = runners_folder.to_string();
 
-        let wineboot = format!("{}/{}", &runners_folder, runner.files.wineboot);
-        let wineserver = format!("{}/{}", &runners_folder, runner.files.wineserver);
+        let wineboot = format!("{}/{}/{}", &runners_folder, runner.name, runner.files.wineboot);
+        let wineserver = format!("{}/{}/{}", &runners_folder, runner.name, runner.files.wineserver);
 
         Command::new(wineboot)
             .env("WINESERVER", wineserver)

src/main.rs

@@ -5,6 +5,9 @@ use gtk::{CssProvider, StyleContext, STYLE_PROVIDER_PRIORITY_APPLICATION};
 use gtk::gdk::Display;
 use gtk::glib::set_application_name;
 
+use std::path::Path;
+use std::fs;
+
 pub mod ui;
 pub mod lib;
 
@@ -27,13 +30,6 @@ async fn main() {
     // FIXME: doesn't work?
     set_application_name("An Anime Game Launcher");
 
-    // Create default launcher folder if needed
-    let launcher_dir = lib::consts::launcher_dir().unwrap();
-
-    if !std::path::Path::new(&launcher_dir).exists() {
-        std::fs::create_dir_all(launcher_dir).expect("Failed to create default launcher dir");
-    }
-
     // Create app
     let application = gtk::Application::new(
         Some(APP_ID),
@@ -53,10 +49,24 @@ async fn main() {
             STYLE_PROVIDER_PRIORITY_APPLICATION
         );
 
-        // Load main window and show it
-        let main = MainApp::new(app).expect("Failed to init MainApp");
+        // Create default launcher folder if needed
+        let launcher_dir = lib::consts::launcher_dir().unwrap();
 
-        main.show();
+        if !Path::new(&launcher_dir).exists() || Path::new(&format!("{}/.first-run", launcher_dir)).exists() {
+            fs::create_dir_all(&launcher_dir).expect("Failed to create default launcher dir");
+            fs::write(format!("{}/.first-run", launcher_dir), "").expect("Failed to create .first-run file");
+
+            let first_run = FirstRunApp::new(app).expect("Failed to init FirstRunApp");
+
+            first_run.show();
+        }
+
+        // Load main window and show it
+        else {
+            let main = MainApp::new(app).expect("Failed to init MainApp");
+
+            main.show();
+        }
     });
 
     // Flush config from the memory to the file before closing the app

src/ui/components/mod.rs

@@ -1,3 +1,4 @@
 pub mod dxvk_row;
 pub mod wine_group;
 pub mod wine_row;
+pub mod progress_bar;

src/ui/components/progress_bar.rs

@@ -0,0 +1,82 @@
+use gtk4::{self as gtk, prelude::*};
+use libadwaita::{self as adw, prelude::*};
+
+use gtk::glib;
+
+use std::io::Error;
+
+use anime_game_core::prelude::*;
+use wait_not_await::Await;
+
+#[derive(Debug)]
+pub enum ProgressUpdateResult {
+    Updated,
+    Error(String, std::io::Error),
+    Finished
+}
+
+#[derive(Clone, glib::Downgrade)]
+pub struct ProgressBar {
+    pub progress_bar: gtk::ProgressBar,
+    pub default_group: adw::PreferencesGroup,
+    pub progress_bar_group: adw::PreferencesGroup
+}
+
+impl ProgressBar {
+    pub fn new(progress_bar: gtk::ProgressBar, default_group: adw::PreferencesGroup, progress_bar_group: adw::PreferencesGroup) -> Self {
+        Self {
+            progress_bar,
+            default_group,
+            progress_bar_group
+        }
+    }
+
+    pub fn show(&self) {
+        self.progress_bar.set_text(None);
+        self.progress_bar.set_fraction(0.0);
+
+        self.default_group.hide();
+        self.progress_bar_group.show();
+    }
+
+    pub fn hide(&self) {
+        self.default_group.show();
+        self.progress_bar_group.hide();
+    }
+
+    pub fn update(&self, fraction: f64, text: Option<&str>) {
+        self.progress_bar.set_fraction(fraction);
+        self.progress_bar.set_text(text);
+    }
+
+    pub fn update_from_state(&self, state: InstallerUpdate) -> ProgressUpdateResult {
+        match state {
+            InstallerUpdate::DownloadingStarted(_) => self.show(),
+
+            InstallerUpdate::DownloadingProgress(curr, total) => {
+                let progress = curr as f64 / total as f64;
+
+                self.update(progress, None);
+            }
+
+            InstallerUpdate::UnpackingProgress(curr, total) => {
+                let progress = curr as f64 / total as f64;
+
+                self.update(progress, None);
+            }
+
+            InstallerUpdate::DownloadingFinished => (),
+            InstallerUpdate::UnpackingStarted(_) => (),
+
+            InstallerUpdate::DownloadingError(err) => return ProgressUpdateResult::Error(String::from("Failed to download"), err.into()),
+            InstallerUpdate::UnpackingError => return ProgressUpdateResult::Error(String::from("Failed to unpack"), Error::last_os_error()),
+
+            InstallerUpdate::UnpackingFinished => return ProgressUpdateResult::Finished
+        }
+
+        ProgressUpdateResult::Updated
+    }
+}
+
+unsafe impl Send for ProgressBar {}
+unsafe impl Sync for ProgressBar {}

src/ui/first_run.rs

@@ -0,0 +1,275 @@
+use gtk4::{self as gtk, prelude::*};
+use libadwaita::{self as adw, prelude::*};
+
+use gtk::glib;
+use gtk::glib::clone;
+
+use std::rc::Rc;
+use std::cell::Cell;
+
+use anime_game_core::prelude::*;
+
+use crate::ui::*;
+use crate::ui::components::progress_bar::*;
+
+use crate::lib::wine::Version as WineVersion;
+use crate::lib::dxvk::Version as DxvkVersion;
+use crate::lib::wine_prefix::WinePrefix;
+use crate::lib::config;
+
+/// This structure is used to describe widgets used in application
+/// 
+/// `AppWidgets::default` function loads UI file from `.assets/ui/.dist` folder and returns structure with references to its widgets
+/// 
+/// This function does not implement events
+#[derive(Clone)]
+pub struct AppWidgets {
+    pub window: adw::ApplicationWindow,
+    pub carousel: adw::Carousel,
+
+    // First page
+    pub first_page: gtk::Box,
+    pub first_page_continue: gtk::Button,
+
+    // Second page
+    pub second_page: gtk::Box,
+    pub second_page_continue: gtk::Button,
+    pub second_page_exit: gtk::Button,
+
+    // Third page
+    pub third_page: gtk::Box,
+
+    pub third_page_wine_version: adw::ComboRow,
+    pub third_page_dxvk_version: adw::ComboRow,
+
+    pub third_page_download: gtk::Button,
+    pub third_page_exit: gtk::Button,
+
+    pub third_page_progress_bar: ProgressBar
+}
+
+impl AppWidgets {
+    pub fn try_get() -> Result<Self, String> {
+        let builder = gtk::Builder::from_string(include_str!("../../assets/ui/.dist/first_run.ui"));
+
+        Ok(Self {
+            window: get_object(&builder, "window")?,
+            carousel: get_object(&builder, "carousel")?,
+
+            // First page
+            first_page: get_object(&builder, "first_page")?,
+            first_page_continue: get_object(&builder, "first_page_continue")?,
+
+            // Second page
+            second_page: get_object(&builder, "second_page")?,
+            second_page_continue: get_object(&builder, "second_page_continue")?,
+            second_page_exit: get_object(&builder, "second_page_exit")?,
+
+            // Third page
+            third_page: get_object(&builder, "third_page")?,
+
+            third_page_wine_version: get_object(&builder, "third_page_wine_version")?,
+            third_page_dxvk_version: get_object(&builder, "third_page_dxvk_version")?,
+
+            third_page_download: get_object(&builder, "third_page_download")?,
+            third_page_exit: get_object(&builder, "third_page_exit")?,
+
+            third_page_progress_bar: ProgressBar::new(
+                get_object(&builder, "third_page_progress_bar")?,
+                get_object(&builder, "third_page_buttons_group")?,
+                get_object(&builder, "third_page_progress_bar_group")?
+            ),
+        })
+    }
+}
+
+/// This enum is used to describe an action inside of this application
+/// 
+/// It may be helpful if you want to add the same event for several widgets, or call an action inside of another action
+/// 
+/// Has to implement glib::Downgrade` trait
+#[derive(Debug, glib::Downgrade)]
+pub enum Actions {
+    FirstPageContinue,
+    SecondPageContinue,
+    ThirdPageDownload,
+    Exit
+}
+
+impl Actions {
+    pub fn into_fn<T: gtk::glib::IsA<gtk::Widget>>(&self, app: &App) -> Box<dyn Fn(&T)> {
+        Box::new(clone!(@weak self as action, @strong app => move |_| {
+            app.update(action).unwrap();
+        }))
+    }
+}
+
+/// This enum is used to store some of this application data
+/// 
+/// In this example we store a counter here to know what should we increment or decrement
+/// 
+/// This must implement `Default` trait
+#[derive(Debug, Default)]
+pub struct Values;
+
+/// The main application structure
+/// 
+/// `Default` macro automatically calls `AppWidgets::default`, i.e. loads UI file and reference its widgets
+/// 
+/// `Rc<Cell<Values>>` means this:
+/// - `Rc` addeds ability to reference the same value from various clones of the structure.
+///   This will guarantee us that inner `Cell<Values>` is the same for all the `App::clone()` values
+/// - `Cell` addeds inner mutability to its value, so we can mutate it even without mutable reference.
+/// 
+/// So we have a shared reference to some value that can be changed without mutable reference.
+/// That's what we need and what we use in `App::update` method
+#[derive(Clone)]
+pub struct App {
+    widgets: AppWidgets,
+    values: Rc<Cell<Values>>,
+    actions: Rc<Cell<Option<glib::Sender<Actions>>>>
+}
+
+impl App {
+    /// Create new application
+    pub fn new(app: &gtk::Application) -> Result<Self, String> {
+        // Get default widgets from ui file and add events to them
+        let result = Self {
+            widgets: AppWidgets::try_get()?,
+            values: Default::default(),
+            actions: Default::default()
+        }.init_events().init_actions();
+
+        // Bind app to the window
+        result.widgets.window.set_application(Some(app));
+
+        Ok(result)
+    }
+
+    /// Add default events and values to the widgets
+    fn init_events(self) -> Self {
+        self.widgets.first_page_continue.connect_clicked(Actions::FirstPageContinue.into_fn(&self));
+        self.widgets.second_page_continue.connect_clicked(Actions::SecondPageContinue.into_fn(&self));
+        self.widgets.third_page_download.connect_clicked(Actions::ThirdPageDownload.into_fn(&self));
+
+        self.widgets.second_page_exit.connect_clicked(Actions::Exit.into_fn(&self));
+        self.widgets.third_page_exit.connect_clicked(Actions::Exit.into_fn(&self));
+
+        self
+    }
+
+    /// Add actions processors
+    /// 
+    /// Changes will happen in the main thread so you can call `update` method from separate thread
+    pub fn init_actions(self) -> Self {
+        let (sender, receiver) = glib::MainContext::channel::<Actions>(glib::PRIORITY_DEFAULT);
+
+        let this = self.clone();
+
+        receiver.attach(None, move |action| {
+            // Some debug output
+            println!("[update] action: {:?}", &action);
+
+            match action {
+                Actions::FirstPageContinue => {
+                    this.widgets.carousel.scroll_to(&this.widgets.second_page, true);
+                }
+
+                Actions::SecondPageContinue => {
+                    this.widgets.carousel.scroll_to(&this.widgets.third_page, true);
+                }
+
+                Actions::ThirdPageDownload => {
+                    this.widgets.third_page_wine_version.set_sensitive(false);
+                    this.widgets.third_page_dxvk_version.set_sensitive(false);
+
+                    this.widgets.third_page_progress_bar.show();
+
+                    let this = this.clone();
+
+                    std::thread::spawn(move || {
+                        let config = config::get().unwrap();
+
+                        let wine_version = WineVersion::latest().unwrap();
+                        let dxvk_version = DxvkVersion::latest().unwrap();
+
+                        let mut wine_version_installer = Installer::new(&wine_version.uri).unwrap();
+
+                        let progress_bar = this.widgets.third_page_progress_bar.clone();
+
+                        wine_version_installer.install(&config.game.wine.builds, move |state| {
+                            match progress_bar.update_from_state(state) {
+                                ProgressUpdateResult::Updated => (),
+                                ProgressUpdateResult::Error(_, _) => todo!(),
+
+                                ProgressUpdateResult::Finished => {
+                                    let mut config = config::get().unwrap();
+                                    let prefix = WinePrefix::new(&config.game.wine.prefix);
+
+                                    config.game.wine.selected = Some(wine_version.name.clone());
+
+                                    config::update_raw(config.clone()).unwrap();
+
+                                    prefix.update(&config.game.wine.builds, wine_version.clone()).unwrap();
+
+                                    let mut dxvk_version_installer = Installer::new(&dxvk_version.uri).unwrap();
+
+                                    let dxvk_version = dxvk_version.clone();
+                                    let progress_bar = progress_bar.clone();
+
+                                    dxvk_version_installer.install(&config.game.dxvk.builds, move |state| {
+                                        match progress_bar.update_from_state(state) {
+                                            ProgressUpdateResult::Updated => (),
+                                            ProgressUpdateResult::Error(_, _) => todo!(),
+                
+                                            ProgressUpdateResult::Finished => {
+                                                let mut config = config::get().unwrap();
+
+                                                config.game.dxvk.selected = Some(dxvk_version.name.clone());
+
+                                                config::update_raw(config.clone()).unwrap();
+
+                                                println!("Done!!");
+                                            }
+                                        }
+                                    });
+                                }
+                            }
+                        });
+                    });
+                }
+
+                Actions::Exit => {
+                    this.widgets.window.close();
+                }
+            }
+
+            glib::Continue(true)
+        });
+
+        self.actions.set(Some(sender));
+
+        self
+    }
+
+    /// Update widgets state by calling some action
+    pub fn update(&self, action: Actions) -> Result<(), std::sync::mpsc::SendError<Actions>> {
+        let actions = self.actions.take();
+        
+        let result = match &actions {
+            Some(sender) => Ok(sender.send(action)?),
+            None => Ok(())
+        };
+
+        self.actions.set(actions);
+
+        result
+    }
+
+    /// Show application window
+    pub fn show(&self) {
+        self.widgets.window.show();
+    }
+}
+
+unsafe impl Send for App {}

src/ui/main.rs

@@ -14,6 +14,7 @@ use crate::ui::*;
 
 use super::preferences::PreferencesStack;
 use super::traits::toast_error::ToastError;
+use super::components::progress_bar::ProgressBar;
 
 use crate::lib::config;
 use crate::lib::game;
@@ -22,24 +23,7 @@ use crate::lib::launcher::states::LauncherState;
 use crate::lib::wine_prefix::WinePrefix;
 use crate::lib::wine::Version as WineVersion;
 use crate::lib::dxvk::Version as DxvkVersion;
-
-fn prettify_bytes(bytes: u64) -> String {
-    if bytes > 1024 * 1024 * 1024 {
-        format!("{:.2} GB", bytes as f64 / 1024.0 / 1024.0 / 1024.0)
-    }
-
-    else if bytes > 1024 * 1024 {
-        format!("{:.2} MB", bytes as f64 / 1024.0 / 1024.0)
-    }
-
-    else if bytes > 1024 {
-        format!("{:.2} KB", bytes as f64 / 1024.0)
-    }
-
-    else {
-        format!("{:.2} B", bytes)
-    }
-}
+use crate::lib::prettify_bytes::prettify_bytes;
 
 fn toast_error(app: &App, msg: &str, err: Error) {
     app.update(Actions::ToastError(Rc::new((
@@ -70,15 +54,13 @@ pub struct AppWidgets {
     pub launch_game: gtk::Button,
     pub open_preferences: gtk::Button,
 
-    pub launch_game_group: adw::PreferencesGroup,
-    pub progress_bar_group: adw::PreferencesGroup,
-    pub progress_bar: gtk::ProgressBar,
+    pub progress_bar: ProgressBar,
 
     pub preferences_stack: PreferencesStack
 }
 
 impl AppWidgets {
-    fn try_get() -> Result<Self, String> {
+    pub fn try_get() -> Result<Self, String> {
         let builder = gtk::Builder::from_string(include_str!("../../assets/ui/.dist/main.ui"));
 
         let window = get_object::<adw::ApplicationWindow>(&builder, "window")?;
@@ -98,9 +80,11 @@ impl AppWidgets {
             launch_game: get_object(&builder, "launch_game")?,
             open_preferences: get_object(&builder, "open_preferences")?,
 
-            launch_game_group: get_object(&builder, "launch_game_group")?,
-            progress_bar_group: get_object(&builder, "progress_bar_group")?,
-            progress_bar: get_object(&builder, "progress_bar")?,
+            progress_bar: ProgressBar::new(
+                get_object(&builder, "progress_bar")?,
+                get_object(&builder, "launch_game_group")?,
+                get_object(&builder, "progress_bar_group")?
+            ),
 
             preferences_stack: PreferencesStack::new(window, toast_overlay)?
         };
@@ -311,144 +295,6 @@ impl App {
 
                                 this.update(Actions::ShowProgressBar).unwrap();
 
-                                // Download wine version if not installed
-                                match WineVersion::latest() {
-                                    Ok(wine) => match Installer::new(wine.uri) {
-                                        Ok(mut installer) => {
-                                            let (send, recv) = std::sync::mpsc::channel();
-                                            let wine_title = wine.title.clone();
-
-                                            installer.install(&config.game.wine.builds, clone!(@strong this => move |state| {
-                                                match state {
-                                                    InstallerUpdate::UnpackingFinished => {
-                                                        send.send(true).unwrap();
-                                                    }
-
-                                                    InstallerUpdate::DownloadingError(_) |
-                                                    InstallerUpdate::UnpackingError => {
-                                                        send.send(false).unwrap();
-                                                    }
-
-                                                    _ => ()
-                                                }
-
-                                                this.update(Actions::UpdateProgressByState(Rc::new((state, Some(wine_title.clone()))))).unwrap();
-                                            }));
-
-                                            // Block thread until downloading finished
-                                            if recv.recv().unwrap() {
-                                                config.game.wine.selected = Some(wine.name);
-
-                                                config::update(config.clone());
-                                            }
-
-                                            else {
-                                                println!("I'm tired, Boss!");
-
-                                                return;
-                                            }
-                                        },
-                                        Err(err) => {
-                                            toast_error(&this, "Failed to init wine version installer", err.into());
-
-                                            return;
-                                        }
-                                    },
-                                    Err(err) => {
-                                        toast_error(&this, "Failed to load wine versions list", err.into());
-
-                                        return;
-                                    }
-                                }
-
-                                // Create prefix if needed
-                                let prefix = WinePrefix::new(&config.game.wine.prefix);
-
-                                if !prefix.exists() {
-                                    this.update(Actions::UpdateProgress {
-                                        fraction: Rc::new(0.0),
-                                        title: Rc::new(String::from("Creating prefix..."))
-                                    }).unwrap();
-
-                                    match config.try_get_selected_wine_info() {
-                                        Some(wine_version) => {
-                                            if let Err(err) = prefix.update(&config.game.wine.builds, wine_version) {
-                                                toast_error(&this, "Failed to create wineprefix", err);
-
-                                                return;
-                                            }
-                                        },
-                                        None => return
-                                    }
-                                }
-
-                                // Download and apply DXVK if not installed
-                                match DxvkVersion::latest() {
-                                    Ok(dxvk) => match Installer::new(&dxvk.uri) {
-                                        Ok(mut installer) => {
-                                            let (send, recv) = std::sync::mpsc::channel();
-                                            let dxvk_title = dxvk.name.clone();
-
-                                            installer.install(&config.game.dxvk.builds, clone!(@strong this => move |state| {
-                                                match state {
-                                                    InstallerUpdate::UnpackingFinished => {
-                                                        send.send(true).unwrap();
-                                                    }
-
-                                                    InstallerUpdate::DownloadingError(_) |
-                                                    InstallerUpdate::UnpackingError => {
-                                                        send.send(false).unwrap();
-                                                    }
-
-                                                    _ => ()
-                                                }
-
-                                                this.update(Actions::UpdateProgressByState(Rc::new((state, Some(dxvk_title.clone()))))).unwrap();
-                                            }));
-
-                                            // Block thread until downloading finished
-                                            if recv.recv().unwrap() {
-                                                config.game.dxvk.selected = Some(dxvk.name.clone());
-
-                                                config::update(config.clone());
-                                            }
-
-                                            else {
-                                                return;
-                                            }
-
-                                            // Apply DXVK
-                                            this.update(Actions::UpdateProgress {
-                                                fraction: Rc::new(100.0),
-                                                title: Rc::new(String::from("Applying DXVK..."))
-                                            }).unwrap();
-
-                                            match dxvk.apply(&config.game.dxvk.builds, &config.game.wine.prefix) {
-                                                Ok(_) => {
-                                                    config.game.dxvk.selected = Some(dxvk.name);
-                                                    
-                                                    config::update(config.clone());
-                                                },
-                                                Err(err) => {
-                                                    toast_error(&this, "Failed to apply DXVK", err);
-
-                                                    return;
-                                                }
-                                            }
-                                        },
-                                        Err(err) => {
-                                            toast_error(&this, "Failed to init wine version installer", err.into());
-
-                                            return;
-                                        }
-                                    },
-                                    Err(err) => {
-                                        toast_error(&this, "Failed to load wine versions list", err.into());
-
-                                        return;
-                                    }
-                                }
-
                                 // Download diff
                                 diff.install_to_by(config.game.path, config.launcher.temp, move |state| {
                                     this.update(Actions::UpdateProgressByState(Rc::new((state, None)))).unwrap();
@@ -464,6 +310,7 @@ impl App {
                 }
 
                 Actions::UpdateProgressByState(state) => {
+                    todo!();
                     // let (state, suffix) = (&*state).clone();
 
                     match &state.0 {
@@ -532,21 +379,15 @@ impl App {
                 }
 
                 Actions::ShowProgressBar => {
-                    this.widgets.progress_bar.set_text(None);
-                    this.widgets.progress_bar.set_fraction(0.0);
-
-                    this.widgets.launch_game_group.hide();
-                    this.widgets.progress_bar_group.show();
+                    this.widgets.progress_bar.show();
                 }
 
                 Actions::UpdateProgress { fraction, title } => {
-                    this.widgets.progress_bar.set_text(Some(title.as_str()));
-                    this.widgets.progress_bar.set_fraction(*fraction);
+                    this.widgets.progress_bar.update(*fraction, Some(title.as_str()));
                 }
 
                 Actions::HideProgressBar => {
-                    this.widgets.launch_game_group.show();
-                    this.widgets.progress_bar_group.hide();
+                    this.widgets.progress_bar.hide();
                 }
 
                 Actions::ToastError(toast) => {

src/ui/mod.rs

@@ -1,16 +1,15 @@
 use gtk4::{self as gtk, prelude::*};
 use libadwaita::{self as adw, prelude::*};
 
+mod first_run;
 mod main;
 mod preferences;
 mod traits;
 
 pub mod components;
 
-pub use main::{
-    App as MainApp,
-    // AppState as MainAppState,
-};
+pub use first_run::App as FirstRunApp;
+pub use main::App as MainApp;
 
 /// This function loads object from builder or panics if it doesn't exist
 pub fn get_object<T: IsA<gtk::glib::Object>>(builder: &gtk::Builder, name: &str) -> Result<T, String> {