# Edit this configuration file to define what should be installed on
# your system.  Help is available in the configuration.nix(5) man page
# and in the NixOS manual (accessible by running ‘nixos-help’).

{ config, pkgs, lib, ... }:

{
  imports = [
    # Include the results of the hardware scan.
    ./hardware-configuration.nix
  ];

  # Bootloader configuration
  #
  # Enable systemd-boot as the bootloader
  boot.loader.systemd-boot.enable = true;
  # Allow EFI variables to be modified
  boot.loader.efi.canTouchEfiVariables = true;

  # Enable support for NTFS file systems
  boot.supportedFilesystems = [ "ntfs" ];

  # Intel CPU microcode updates (uncomment to enable)
  # hardware.cpu.intel.updateMicrocode = true;

  networking.hostName = "nixos-home"; # Set the hostname for the system
  # networking.wireless.enable = true;  # Enable wireless support using wpa_supplicant (uncomment to enable)

  networking.nameservers = [
    "8.8.8.8"
    "223.5.5.5"
    "208.67.222.222"
    "192.168.1.1"
  ]; # Specify DNS servers

  services.resolved = {
    enable = true; # Enable systemd-resolved for DNS resolution
    # dnssec = "true"; # Enable DNSSEC (uncomment to enable)
    # domains = ["~."]; # Specify search domains (uncomment to enable)
    # fallbackDns = ["192.168.1.1"]; # Specify fallback DNS servers (uncomment to enable)
    # dnsovertls = "false"; # Disable DNS over TLS (uncomment to enable)
  };

  # Configure network proxy settings if required
  # networking.proxy.default = "http://user:password@proxy:port/"; # Set default proxy
  # networking.proxy.noProxy = "127.0.0.1,localhost,internal.domain"; # Specify addresses to bypass proxy

  # Enable NetworkManager for managing network connections
  networking.networkmanager.enable = true;

  # Add custom entries to the /etc/hosts file
  networking.extraHosts = ''
    127.0.0.1  baidu.com
  '';

  # Set the system time zone
  time.timeZone = "Asia/Shanghai";

  # Configure internationalization settings
  i18n.defaultLocale = "en_US.UTF-8"; # Set the default locale

  i18n.extraLocaleSettings = {
    LC_ADDRESS = "zh_CN.UTF-8"; # Set locale for address formatting
    LC_IDENTIFICATION = "zh_CN.UTF-8"; # Set locale for identification
    LC_MEASUREMENT = "zh_CN.UTF-8"; # Set locale for measurement units
    LC_MONETARY = "zh_CN.UTF-8"; # Set locale for monetary formatting
    LC_NAME = "zh_CN.UTF-8"; # Set locale for personal names
    LC_NUMERIC = "zh_CN.UTF-8"; # Set locale for numeric formatting
    LC_PAPER = "zh_CN.UTF-8"; # Set locale for paper size
    LC_TELEPHONE = "zh_CN.UTF-8"; # Set locale for telephone numbers
    LC_TIME = "zh_CN.UTF-8"; # Set locale for time formatting
  };

  # Configure input method editor (IME) settings
  i18n.inputMethod = {
    enable = true; # Enable input method support
    type = "fcitx5"; # Use Fcitx5 as the input method framework
    # waylandFrontend = true; # Enable Wayland frontend (uncomment to enable)
    fcitx5.addons = with pkgs; [ fcitx5-rime ]; # Add Rime addon for Fcitx5
  };

  # Install additional fonts
  fonts.packages = with pkgs; [
    # Common fonts
    dejavu_fonts
    roboto
    liberation_ttf
    open-sans
    inter
    overpass

    # CJK fonts
    noto-fonts
    noto-fonts-cjk-sans
    noto-fonts-cjk-serif
    noto-fonts-emoji
    wqy_microhei
    lxgw-wenkai
    lxgw-neoxihei

    # Coding fonts
    jetbrains-mono
    roboto-mono
    ibm-plex
    camingo-code
    victor-mono
    iosevka
    source-code-pro
    cascadia-code
    fira-code
  ];

  # Define a user account. Remember to set a password using ‘passwd’.
  users.users.yang = {
    isNormalUser = true; # Mark as a regular user
    description = "yang"; # Set user description
    extraGroups =
      [ "networkmanager" "wheel" "adbusers" ]; # Add user to additional groups
    packages = with pkgs;
      [
        # List of packages for the user
      ];
  };

  # Define environment variables for the user
  environment = {
    sessionVariables = {
      # Add environment variables here
    };
  };

  security.rtkit.enable = true; # Enable real-time kit for audio processing
  security.sudo.wheelNeedsPassword =
    false; # Allow members of the wheel group to use sudo without a password

  # Allow installation of unfree packages
  nixpkgs.config.allowUnfree = true;

  # Enable experimental Nix features, such as the new Nix CLI and flakes
  nix.settings.experimental-features = [ "nix-command" "flakes" ];

  # Configure binary cache mirrors for faster downloads. These mirrors are hosted in China.
  nix.settings.substituters = [
    "https://mirrors.tuna.tsinghua.edu.cn/nix-channels/store"
    "https://mirrors.ustc.edu.cn/nix-channels/store"
    "https://mirror.sjtu.edu.cn/nix-channels/store"
  ];
  # These settings can also be specified via the command line, for example:
  # nixos-rebuild switch --option substituters "https://mirror.sjtu.edu.cn/nix-channels/store"
  # nixos-rebuild switch --option substituters "https://mirrors.ustc.edu.cn/nix-channels/store"
  # nixos-rebuild switch --option substituters "https://mirrors.tuna.tsinghua.edu.cn/nix-channels/store"

  # Uncomment the following line to enable support for RGB devices
  # services.hardware.openrgb.enable = true;

  # Define the list of system-wide packages to be installed
  environment.systemPackages = with pkgs; [
    # Utilities for general use
    vim
    wget
    aria2
    ffmpeg
    netcat-openbsd
    psmisc
    pciutils
    usbutils
    htop
    p7zip
    unrar
    file
    fastfetch
    localsend

    # Tools for C development
    # Note: Some packages like `musl`, `cmake`, `meson`, `pkg-config`, and `ninja` may not work as expected.
    # Refer to https://wiki.nixos.org/wiki/C for more details.
    gcc
    gnumake
    binutils
    gdb

    # Nix
    nixfmt-classic
    nixd

    # Man pages
    man-pages
    man-pages-posix

    # Programming language
    # Use `programs.java.enable = true` to enable Java support
    rustup # Rust toolchain manager
    go # Go programming language
    nodejs # Node.js runtime
    python314 # Python 3.14 interpreter
    pipx # Python package installer for isolated environments
    flutter # Flutter framework for building cross-platform apps (ref: https://wiki.nixos.org/wiki/Flutter)

    # Development tools
    vscode # Visual Studio Code (some extensions like CodeLLDB may not work, ref: https://wiki.nixos.org/wiki/Visual_Studio_Code)
    git # Version control system
    qemu # Hardware virtualization tool
    meld # Diff and merge tool
    # binaryninja-free # Reverse engineering tool (not available in the 24.11 repository)
    cutter # x86 disassembler
    d-spy # D-Bus exploration tool

    # Internet tools
    google-chrome # Web browser
    qbittorrent # BitTorrent client

    # Multimedia tools
    vlc # Video player
    mpv # Lightweight video player
    smplayer # Video player with advanced features
    audacious # Music player

    # Creative tools
    kicad # Electronic Design Automation (EDA) suite
    libreoffice-qt # Office suite with Qt integration
    gimp # Image editor
    inkscape # Vector graphics editor
    blender-hip # Blender optimized for AMD GPUs using HIP
    audacity # Audio editor
    krita # Digital painting software
    calibre # E-book management software
    kdePackages.kdenlive # Video editor

    # GUI utilities
    gparted # Disk partitioning tool
    gnome-disk-utility # Disk management tool
    kdePackages.filelight # Disk usage visualization tool
    kdePackages.yakuake # Drop-down terminal emulator
    kdePackages.kcalc # Calculator
    kdePackages.krdc # Remote desktop client

    # GPU utilities
    amdgpu_top # GPU monitoring tool with GUI (launch using `amdgpu_top --gui`)
    radeontop # GPU monitoring tool with CLI
    furmark # Vulkan-based GPU benchmark and stress test

    # Flatpak utilities (commented out by default)
    #
    # kdePackages.discover # Flatpak software center
    # kdePackages.flatpak-kcm # Flatpak permissions management

    # Container tools (commented out by default)
    #
    # dive # Inspect Docker image layers
    # podman-tui # Terminal-based Podman container manager
    # podman-compose # Manage groups of containers for development

    # Appearance (commented out by default)
    #
    # numix-icon-theme-circle # Icon theme
    # tela-circle-icon-theme # Icon theme

    # Games
    kdePackages.ksudoku # Sudoku game
    # superTuxKart # Classic kart racing game
    # prismlauncher # Minecraft launcher

    # Xorg compatibility tools
    xorg.xauth # X authentication utility
    xorg.xhost # X server access control program
  ];

  # Enable additional documentation and manpages for development
  documentation.dev.enable = true;

  # KDE Connect for device integration
  programs.kdeconnect.enable = true;

  # Enable Firefox browser
  programs.firefox.enable = true;

  # Steam gaming platform
  programs.steam = {
    enable = true;
    # Open firewall ports for Steam Remote Play
    remotePlay.openFirewall = true;
    # Open firewall ports for Source Dedicated Server
    dedicatedServer.openFirewall = true;
  };
  nixpkgs.config.allowUnfreePredicate = pkg:
    builtins.elem (lib.getName pkg) [
      "steam"
      "steam-unwrapped"
      "steam-original"
      "steam-run"
    ];

  # AMD GPU configuration
  boot.initrd.kernelModules = [ "amdgpu" ];

  # AMD OpenCL support
  hardware.graphics.extraPackages = with pkgs; [ rocmPackages.clr.icd ];
  environment.variables = { ROC_ENABLE_PRE_VEGA = "1"; };

  # AMD GPU Vulkan support
  hardware.graphics = {
    enable = true;
    enable32Bit = true; # Enable 32-bit application support
  };

  # VirtualBox virtualization
  virtualisation.virtualbox.host.enable = true;
  # virtualisation.virtualbox.host.enableExtensionPack = true; # Requires recompilation on every rebuild, disabled for convenience
  users.extraGroups.vboxusers.members = [ "yang" ];

  # GnuPG configuration
  #
  # Some programs require SUID wrappers, additional configuration, or user session startup.
  # programs.mtr.enable = true; # Uncomment to enable MTR
  programs.gnupg.agent = {
    enable = true;
    enableSSHSupport = true; # Enable SSH agent support
  };

  # Podman container management
  virtualisation.containers.enable = true;
  virtualisation = {
    podman = {
      enable = true;

      # Create a `docker` alias for Podman to use it as a drop-in replacement
      dockerCompat = true;

      # Enable DNS for containers under podman-compose
      defaultNetwork.settings.dns_enabled = true;
    };
  };

  # Android tools
  programs.adb.enable = true;

  # Java support
  programs.java.enable = true;

  # OBS Studio for screen recording and streaming
  programs.obs-studio.enable = true;

  # AppImage support
  programs.appimage = {
    enable = true;
    binfmt = true; # Enable binary format support
  };

  # File system configuration
  fileSystems."/run/media/yang/linux_ext" = {
    device = "/dev/disk/by-uuid/YOUR_PARTITION_UUID";
    fsType = "ext4";
    options = [
      "defaults"
      # Note: "users" and "user" imply "noexec", "nosuid", and "nodev"
      # References:
      # https://help.ubuntu.com/community/Fstab
      # https://linux.die.net/man/8/mount
      # For exFAT format, specify uid and gid to avoid read-only issues
      # "uid=1000"
      # "gid=100"
      # "fmask=0113"
      # "dmask=0002"
      "nofail" # Prevent system failure if the drive doesn't mount
    ];
  };

  # Enable Ollama service
  services.ollama = {
    enable = true;
    acceleration = "rocm"; # Use AMD GPU acceleration
    rocmOverrideGfx = "10.3.0"; # Specify AMD ROCm version
    host = "0.0.0.0"; # Listen on all interfaces
    openFirewall = true; # Open firewall for this service
  };

  # Enable Flatpak support
  #
  # services.flatpak.enable = true;
  # xdg.portal.extraPortals = [ pkgs.xdg-desktop-portal-gtk ];
  # xdg.portal.config.common.default = "gtk";

  # Enable KDE Plasma Desktop Environment
  services.displayManager.sddm.enable = true;
  services.displayManager.sddm.wayland.enable = true;
  services.desktopManager.plasma6.enable = true;

  # Enable CUPS for printing
  services.printing.enable = true;

  # Enable Bluetooth support
  hardware.bluetooth.enable = true;
  # Power on the default Bluetooth controller at boot
  hardware.bluetooth.powerOnBoot = true;

  # Enable sound with PipeWire
  hardware.pulseaudio.enable = false; # Disable PulseAudio
  # services.pulseaudio.enable = false; # New syntax in NixOS 25.05
  services.pipewire = {
    enable = true; # Enable PipeWire
    alsa.enable = true; # Enable ALSA support
    alsa.support32Bit = true; # Enable 32-bit ALSA support
    pulse.enable = true; # Enable PulseAudio compatibility
    jack.enable = true; # Add support for JACK applications
  };

  # Enable OpenSSH daemon
  services.openssh.enable = true;

  # Enable Samba for file sharing
  services.samba = {
    enable = true;
    openFirewall = true; # Open firewall for Samba
    settings = {
      global = {
        "workgroup" = "WORKGROUP"; # Set workgroup name
        "server string" = "nixos-home"; # Set server description
        "netbios name" = "nixos-home"; # Set NetBIOS name
        "security" = "user"; # Use user-level security
        "guest account" = "nobody"; # Set guest account
      };
    };
  };

  # Enable Samba WSDD for network discovery
  services.samba-wsdd = {
    enable = true;
    openFirewall = true;
  };

  # Enable Avahi for network service discovery
  services.avahi = {
    enable = true;
    nssmdns4 = true; # Enable mDNS for IPv4
    openFirewall = true;
  };

  # Firewall configuration
  # networking.firewall.allowedTCPPorts = [ ... ]; # Specify allowed TCP ports
  # networking.firewall.allowedUDPPorts = [ ... ]; # Specify allowed UDP ports
  # Or disable the firewall altogether.
  networking.firewall.enable = false; # Disable the firewall
  networking.firewall.allowPing = true; # Allow ping requests

  # This value determines the NixOS release from which the default
  # settings for stateful data, like file locations and database versions
  # on your system were taken. It‘s perfectly fine and recommended to leave
  # this value at the release version of the first install of this system.
  # Before changing this value read the documentation for this option
  # (e.g. man configuration.nix or on https://nixos.org/nixos/options.html).
  system.stateVersion = "24.11"; # Did you read the comment?

}