{ pkgs, ... }:

with pkgs;

let
  unstable = import <nixos-unstable> {};
  mybrowser = firefox;
  lorri = import (fetchTarball { url = "https://github.com/target/lorri/archive/rolling-release.tar.gz"; }) {};
  pypi2nix = import (
    pkgs.fetchgit {
      url = "https://github.com/nix-community/pypi2nix";
      rev = "v2.0.0";
      sha256 = "sha256:1mrvbm78jnk7m44gvpa7l2iwrjiv9584f14vlcw9p334zxknpsfr";
    }
  ) {};

  desktopApps = [
    mybrowser
    falkon
    thunderbird
    calibre
    dino
    zotero
    keepassxc
    ding
    aspell
    aspellDicts.de
    aspellDicts.en
    # for kate/KDE applications
    hunspellDicts.de-de
    hunspellDicts.en-us
    hunspellDicts.en-gb-ise
    seafile-client
    alacritty
    libreoffice-fresh
    backintime-common
    anki
    signal-desktop
    (tor-browser-bundle-bin.override { mediaSupport = true; pulseaudioSupport = true; })
    virtualbox
    pdfpc
    quaternion
    nheko
    wire-desktop
    gpx-viewer
    gpxsee
    cawbird
    tootle
    subsurface
    (
      pkgs.pidgin-with-plugins.override {
        plugins = [ pkgs.pidginotr ];
      }
    )

    # for Hibiscus banking software
    jameica
    #ToDo: which of these drivers is actually used?
    geckodriver
    chromedriver
  ];

  graphicsApps = [
    inkscape
    darktable
    hugin
    luminanceHDR
    exiftool
    gimp
  ]
  ++ (
    with gimpPlugins; [
      resynthesizer2
      fourier
      lqrPlugin
    ]
  );

  multimediaApps = [
    mpv
    vlc
    #amarok
    clementine
    youtube-dl
    #sonic-pi
    musescore
    audacity
    avidemux
    linphone
    picard
    soundkonverter
  ];

  cliApps = [
    myVim
    htop
    tmux
    httpie
    ponysay
    gti
    tree
    lsof
    mosh
    openssh
    sshfsFuse
    cryfs
    smbnetfs # for FUSE smb mounting
    sshuttle
    thefuck
    gnupg
    unar
    pwgen
    pandoc
    agrep
    pdfgrep
    torsocks
    ncdu
    psmisc # for killall
    dos2unix
    reptyr # re-bind running program to other tty
    xclip
    unzip
  ];

  nixHelpers = [
    lorri
    nix-review
    nixpkgs-fmt
    pypi2nix
  ];

  kdeTools = with kdeApplications; [
    okular
    redshift-plasma-applet
    gwenview
    yakuake
    kmail
    kontact
    korganizer
    akonadi-mime #for KOrganizer
    kaddressbook
    kdeconnect
    dolphin
    spectacle
    kate
    kleopatra
    qdirstat
    ark
    kwalletmanager
    ktouch
    kcharselect
    konversation
    okteta
    ktorrent
    krdc
    skanlite
    akonadiconsole
    plasma-browser-integration
  ]
  ++ (
    with kdeFrameworks; [
      networkmanager-qt
      kcrash
      plasma5.breeze-gtk
      libsForQt5.phonon-backend-vlc
      #(phonon-backend-vlc.override {qtbase=qt5.qtbase; qtx11extras=qt5.qtx11extras;})
    ]
  );

  devTools = [
    curl
    httpie
    gdb
    strace
    ltrace
    valgrind
    zeal
    gcc
    kdevelop
    qtcreator
    shellcheck
    mtr
    wireshark
    ripgrep
    ghc
  ];


  latexApps = [
    texmaker
    kile
    biber
    # customize texlive installation
    (
      texlive.combine {
        inherit (texlive)
          scheme-medium

          xetex
          luatex
          unicode-math
          fontspec
          collection-binextra
          collection-fontsrecommended
          collection-latex
          collection-latexextra
          collection-latexrecommended
          collection-langgerman
          IEEEtran
          moderncv
          acronym
          ccicons
          fontawesome
          biblatex
          logreq
          koma-script
          ;
      }
    )
  ];

  pythonApps = with python3Packages; [
    notebook
    ipython
    pip
    numpy
    matplotlib
    jedi
    flake8
    mypy
  ]
  ++ (
    with python2Packages; []
  );


  fonts = [
    comic-neue
    source-sans-pro
    source-serif-pro
    fira-code
    ubuntu_font_family
    twemoji-color-font
    opensans-ttf
    (iosevka.override { design = [ "slab" "term" ]; set = "serif"; })
    # TODO: vollkorn
    # TODO: humor-sans
  ];

  games = [
    superTuxKart
    #hedgewars
    steam-run-native
  ];

in
{

  home.packages = (
    []
    ++ desktopApps
    ++ latexApps
    ++ pythonApps
    ++ graphicsApps
    ++ cliApps
    ++ multimediaApps
    ++ devTools
    ++ kdeTools
    ++ fonts
    ++ nixHelpers
    ++ games
  );

  programs.home-manager.enable = true;
  programs.home-manager.path = "$HOME/.nix-defexpr/channels/home-manager";
  home.stateVersion = "18.09";

  programs.direnv =
    {
      enable = true;
      enableZshIntegration = true;
    };

  #  programs.vim =
  #    { enable = true;
  #    };

  programs.bat.enable = true;

  services.gpg-agent =
    {
      enable = true;
      enableSshSupport = true;
    };

  programs.tmux = {
    enable = true;
    keyMode = "vi";
    extraConfig =
      # for direnv not messing up the environment
      ''set-option -g update-environment "DIRENV_DIFF DIRENV_DIR DIRENV_WATCHES"
          set-environment -gu DIRENV_DIFF
          set-environment -gu DIRENV_DIR
          set-environment -gu DIRENV_WATCHES
          set-environment -gu DIRENV_LAYOUT
        
          bind-key -T copy-mode-vi 'v' send -X begin-selection
          bind-key -T copy-mode-vi 'y' send -X copy-selection-and-cancel'';
    terminal = "screen-256color";
  };

  # lorri daemon service
  systemd.user = with lib; {
    services.lorri = {
      Unit = {
        Description = "Lorri build daemon";
        Documentation = "https://github.com/target/lorri";
        ConditionUser = "!@system";
        Requires = "lorri.socket";
        After = "lorri.socket";
        RefuseManualStart = true;
      };

      Service = {
        ExecStart = "${lorri}/bin/lorri daemon";
        PrivateTmp = true;
        ProtectSystem = "strict";
        WorkingDirectory = "%h";
        Restart = "on-failure";
        Environment =
          let
            path = with pkgs; makeSearchPath "bin" [ nix gnutar git mercurial ];
          in
            concatStringsSep " " [
              "PATH=${path}"
              "RUST_BACKTRACE=1"
            ];
      };
    };

    sockets.lorri = {
      Unit = {
        Description = "Socket for lorri build daemon";
      };

      Socket = {
        ListenStream = "%t/lorri/daemon.socket";
      };

      Install = {
        WantedBy = [ "sockets.target" ];
      };
    };
  };

}