mkdir -p ~/dotfiles/i3 # Create the i3 configuration directory in your dotfiles folder and copy your existing i3 config, i3status.conf (for i3status bar), and picom.conf (for the Picom compositor).

set $mod Mod4
font pango:Hack 14

exec --no-startup-id dex --autostart --environment i3
exec --no-startup-id nm-applet # Network Management Applet

# start a terminal and pavucontrol
bindsym $mod+Return exec alacritty
bindsym $mod+b exec pavucontrol

# kill focused window
bindsym $mod+Shift+q kill

bindsym $mod+Shift+d exec rofi -show power-menu -modi power-menu:rofi-power-menu
# keybinding ($mod+Shift+d) runs rofi with a power-menu mode.
#  Rofi is a powerful and flexible application launcher and menu system. The power menu mode (provided by rofi-power-menu) allows you to reboot, shutdown, suspend, or hibernate your system easily.

# Option 1
bindsym --release Shift+Print exec scrot -s ~/Dropbox/%b%d::%H%M%S.png
bindsym --release Print exec scrot -s ~/Dropbox/%b%d::%H%M%S.png

# Option 2
# An alternative is to use flameshot, a powerful yet simple to use screenshot software
bindsym --release Print exec flameshot full # Take a screenshot of a whole window. You can add -p pathToADirectory.
bindsym --release Shift+Print exec flameshot gui # Take a screenshot of a screen region.bindsym $mod+d exec --no-startup-id dmenu_run

# enter fullscreen mode for the focused container
bindsym  $mod+f fullscreen toggle

# change container layout (stacked, tabbed, toggle split)
bindsym $mod+s layout stacking
bindsym $mod+w layout tabbed
bindsym $mod+e layout toggle split

exec_always nitrogen --set-zoom-fill --random ~/Pictures/wallpapers
# Nitrogen is a versatile and lightweight wallpaper manager for Linux.
# Here it is configured to select a random wallpaper from the ~/Pictures/wallpapers directory each time i3 starts.
# The --set-zoom-fill option sets the wallpaper to fill the screen.

exec --no-startup-id picom --config ~/.config/picom/picom.conf #
# picom is a lightweight and versatile compositor for X11.
# It provides various visual effects such as window transparency, fading, and shadows.
# Running it at startup is recommended.
# The --no-startup-id option prevents i3 from keeping track of picom as a "startup application,"
# allowing i3 to continue loading without waiting for picom to exit.

exec --no-startup-id systemctl --user start espanso
# espanso is a text expander application.
# Using systemctl --user start espanso starts it as a user service.
# This means it will run in the background, allowing you to type shortcuts that expand into longer strings.

exec --no-startup-id barrier
# exec: This command is used to execute a program.
# --no-startup-id: This option tells the window manager not to manage the application's startup status. In other words, it won't track the application for session management.
# barrier is a software that allows you to share a keyboard and mouse between multiple computers.

exec --no-startup-id dropbox start -i
# It starts the Dropbox client with the -i option in the background and show the icon in the system tray.

set $ws1 "1: Terminal"
set $ws3 "3: Knowledge"
# These lines define variables for workspace names, making the configuration more readable and meaningful.
# Instead of just calling it "Workspace 1," we call it "1: Terminal," "2: Browser", "3: Knowledge", or "4: Code",
# indicating its purpose or use

exec --no-startup-id i3-msg 'workspace $ws1; exec alacritty'
# It tells i3 that upon startup, it should switch to the $ws1 workspace and run alacritty (a GPU-accelerated terminal).
exec --no-startup-id i3-msg 'workspace $ws3; exec obsidian'
# It start Obsidian, a note-taking and knowledge management application, in the Knowledge workspace.
exec --no-startup-id i3-msg 'workspace $ws4; exec code ~/justtothepoint/'
exec --no-startup-id i3-msg 'workspace $ws4; exec  distrobox-enter archlinux -- google-chrome-stable'
exec --no-startup-id setxkbmap es
exec --no-startup-id xrandr --output DVI-I-1 --mode 1920x1200 --rate 59.88

home.file = {
	  ".config/espanso/match/base.yml".source = "/home/${username}/dotfiles/Espanso/base.yml";
		".config/i3/config".source = "/home/${username}/dotfiles/i3/config";
		".config/i3status/i3status.conf".source = "/home/${username}/dotfiles/i3/i3status.conf";
		".config/picom/picom.conf".source = "/home/${username}/dotfiles/i3/picom.conf";
	# ... other home.file entries
	};

services.flatpak.enable = true;
# Enable Flatpak Support, a system for building, distributing, and running sandboxed desktop applications.
# After enabling Flatpak, add the Flathub repository (an app store)
# so we can install applications from Flathub
flatpak remote-add --if-not-exists flathub https://flathub.org/repo/flathub.flatpakrepo

programs.firefox.enable = true; # Install or enable firefox.
programs.zsh.enable = true; # Set zsh as the default shell.

# environment.systemPackages: Lists packages to be installed system-wide.
environment.systemPackages = with pkgs; [
  vim  # A powerful, popular, and highly configurable text editor, widely used among developers.
  pavucontrol # A user-friendly GUI interface for managing audio settings on PulseAudio.
  google-chrome # Google Chrome, Google's browser.
  # Non-free browser, therefore allowUnfree = true; is required.
  espanso # A cross-platform text expander written in Rust, useful for inserting predefined text snippets.
  rofi # A fast application launcher and window switcher, often used as an alternative to dmenu.
  picom # A compositor for X11, providing effects like transparency and shadow support for windows.
  vscode # Visual Studio Code, a popular code editor with a rich ecosystem of extensions.
  nitrogen  # A wallpaper manager.
  xss-lock  # A simple tool to lock the screen using various lock screen applications.
  scrot # A command-line tool for taking screenshots in various formats.
  flameshot # A powerful screenshot tool with a graphical interface and annotation capabilities.
  pulseaudio # A sound server that allows for advanced audio management.
  i3status # A status bar for the i3 window manager, displaying system information like CPU load and memory usage.
  i3lock # A simple screen locker for the i3 window manager, providing a quick way to lock the screen.
  copyq # An advanced clipboard manager with a searchable interface and support for storing snippets.
  pcmanfm # A lightweight file manager for X11, known for its simplicity and speed.
  unzip # A command-line utility for extracting files from ZIP archives.
  keepassxc # A cross-platform password manager that securely stores and manages passwords.
  obsidian # A note-taking and knowledge management application that helps organize thoughts and ideas.
  distrobox # A tool for creating and managing containerized environments for different Linux distributions.
  hugo # Hugo is a fast and flexible static site generator written in Go, ideal for building websites.
  wget # A command-line utility for downloading files from the web, supporting HTTP, HTTPS, and FTP protocols.
  barrier # A software KVM (keyboard, video, mouse) solution that allows sharing a single keyboard and mouse across multiple machines.
  alacritty # A modern, GPU-accelerated terminal emulator that is fast and highly configurable.
  gnupg # A complete and free implementation of the OpenPGP standard, allowing for encryption and signing of data.
  waybar # A customizable status bar for Wayland
  swww # A simple Wayland wallpaper setter
  networkmanagerapplet # NetworkManager applet for managing network connections. It includes nm-applet and nm-connection-editor.
  xwayland # Provides compatibility for X11 applications on Wayland
  mesa # Open-source graphics driver for rendering
  gnome.adwaita-icon-theme # Adwaita icon theme for GNOME applications
  gtk3 # Toolkit for creating graphical user interfaces
  # power-profiles-daemon allows users to manage power profiles on their system
  # enabling easy switching between performance and power-saving modes (polybar).
  power-profiles-daemon
];

nixpkgs.config.allowUnfree = true;
# Enables installation of packages that are not open source
# It includes NVDIA drivers or applications like plex and Google Chrome.

services.plex.enable = true; # Enable Plex Media Server.
# It is a full-media server which allows you to store your media and play it back (stream your content) across many different devices.

sudo vim /etc/nixos/configuration.nix
# 1. Enable Flatpak support on the system.
services.flatpak.enable = true;

# 2. Rebuild your NixOS (apply changes):
sudo nixos-rebuild switch

# 3. Add the Flathub repository, which is a central hub or app store for Flatpak applications.
flatpak remote-add --if-not-exists flathub https://flathub.org/repo/flathub.flatpakrepo
#  The --if-not-exists option ensures it won’t be added twice if you run the command again.

# 4. Installing applications with Flatpak
flatpak install -y flathub com.google.Chrome md.obsidian.Obsidian com.ktechpit.whatsie org.flameshot.Flameshot org.keepassxc.KeePassXC com.github.tchx84.Flatseal com.spotify.Client com.discordapp.Discord org.telegram.desktop org.libreoffice.LibreOffice flathub org.gnome.Boxes org.gimp.GIMP org.filezillaproject.Filezilla flathub org.videolan.VLC org.gnome.gedit com.anydesk.Anydesk

flatpak list # List all installed Flatpak applications
flatpak update # Update your installed Flatpak applications so you can benefit from the latest features, bug fixes, and security patches.
flatpak uninstall  # Uninstalled a Flatpack application.

 vim /etc/nixos/configuration.nix

 fonts.fontDir.enable = true;  # Enable fontDir in your NixOS configuration.
 # It creates a symbolic link from the host's font directory into the Flatpak sandbox environment,
 # allowing Flatpak applications to use your system fonts.

 flatpak --user override --filesystem=host # Allow the Flatpaks to access the WHOLE filesystem.
 # This is similar to enable "All system files" in Flatseal, a graphical utility to review and modify permissions from your Flatpak applications.

 # vim hyperland.nix
 wayland.windowManager.hyprland = {
    extraConfig = let
      modifier = "SUPER";
    in ''
      monitor=,highres,auto,2
      # The env variables adjust how applications scale their interface, making text and icons appropriately sized on high-DPI screens.
      [...] # Scaling Factors for Wayland/GTK/QT Apps
      env = GDK_SCALE,2 # for GTK apps to increase their scaling by a factor of two.
      env = QT_AUTO_SCREEN_SCALE_FACTOR,1 # for QT-based apps to adjust their scaling.
      env = QT_SCALE_FACTOR,1.5

      exec-once = [workspace 4 silent] sleep 2 && "flatpak run com.google.Chrome --force-device-scale-factor=2.0 --custom-chrome-frame"