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

with lib;

let
  cfg = config.programs.xmonad;

  xmonadConfig = with pkgs; callPackage ./buildXmonad.nix {inherit (pkgs.haskellPackages) xmonad-masser; } cfg.dhallConfigPath cfg.packages;
  gifs = pkgs.callPackage ./gifs.nix {};
  saver_mpv = pkgs.writeScript "saver_mpv" ''
    #!${pkgs.bash}/bin/bash
    PATH=${makeBinPath [pkgs.mpv pkgs.coreutils pkgs.findutils]}:$PATH
    video=`find ${gifs} -type f | sort -R | head -n 1`
    mpv \
      --no-input-terminal \
      --really-quiet \
      --scale=oversample \
      --loop \
      --no-stop-screensaver \
      --wid="''${XSCREENSAVER_WINDOW}" \
      --no-audio "$video" &
    exec ${pkgs.xsecurelock}/libexec/xsecurelock/saver_blank
  '';
  lock = pkgs.writeScript "lock.sh" ''
      #!${pkgs.bash}/bin/bash
      PATH=${makeBinPath [pkgs.gnupg pkgs.coreutils pkgs.findutils]}:$PATH

      gpg-connect-agent reloadagent /bye


      export XSECURELOCK_SAVER=${saver_mpv}
      export XSECURELOCK_PASSWORD_PROMPT="emoticon"
      ${pkgs.xsecurelock}/bin/xsecurelock
  '';

in {
  options = {
    programs.xmonad = {
      enable = mkEnableOption "Enable xmonad";
      dhallConfigPath = mkOption {
        type = types.path;
      };
      packages = mkOption {
        type = types.attrsOf types.package;
        default = {};
      };
    };
  };
  config = mkIf cfg.enable {
    home.packages = with pkgs; [
      source-code-pro
      dmenu
      gnome3.zenity
      rofi
      haskellPackages.xmobar
      xorg.xmodmap
      xorg.xev
      xorg.xset
      xorg.xbacklight
      xclip
      xcalib
      i3lock
    ];
    services.screen-locker = {
      enable = true;
      lockCmd = "${lock}";
    };
    xsession = {
      enable = true;
      windowManager.xmonad = {
        enable = true;
        enableContribAndExtras = true;
        extraPackages = h: [h.xmonad-contrib h.xmonad-masser];
        config =

      let toAppKey = k: _: "${k} :: FilePath";
          toApp = k: v: ''Application {_applicationName = "${k}", _applicationAction = "${v}"}'';
          applications = concatStringsSep "\n  , " (mapAttrsToList toApp cfg.applications);
          orNothingStr = x: if null == x then "Nothing" else ''Just "${x}"'';
          quoted = x: ''"${x}"'';
          toTopic = k: v: ''TopicRule {_topicRuleName = "${k}", _topicRuleHome = ${orNothingStr v.home}, _topicRuleAction = ${orNothingStr v.action}, _topicRuleClasses = [${concatStringsSep ", " (map quoted v.classes)}]}'';
          topics = concatStringsSep "\n  , " (mapAttrsToList toTopic cfg.topics);
          toSearch = k: v: ''Search {_searchName="${k}", _searchKey="${v.key}", _searchUrl="${v.url}"}'';
          searches = concatStringsSep "\n  , " (mapAttrsToList toSearch cfg.searches);
      in pkgs.writeText "xmonad.hs"
      ''
      {-# LANGUAGE OverloadedStrings #-}
      {-# LANGUAGE NamedFieldPuns #-}
      module Main where
      -- This is autogenerated file, don't touch

      import XMonad.Config.MasseR

      main :: IO ()
      main = masser
      '';
      };
      initExtra = ''
        xmodmap ~/.Xmodmap
        ${pkgs.xcape}/bin/xcape -e 'Hyper_L=Tab'
      '';
    };
    home.file.".xmonad/xmonad.dhall".source = xmonadConfig + "/source.dhall";
  #   programs.xmonad =
  #     let
  #       musicToggle = pkgs.writeScript "musictoggle" ''
  #         ${pkgs.mpc_cli}/bin/mpc toggle
  #       '';
  #       # musicCurrent = with pkgs; writeScript "musiccurrent" ''
  #       #   export PATH=${lib.makeBinPath [sp gawk]}
  #       #   sp current | awk '/^Title/ {$1 = ""; print $0}'
  #       # '';
  #       musicCurrent = with pkgs; writeScript "musiccurrent" ''
  #         export PATH=${lib.makeBinPath [mpc_cli]}
  #         mpc --format "%title%" current
  #       '';
  #       xmobarConf = pkgs.writeText "xmobar" ''
  #       Config {
  #           font = "xft:Inconsolata-9"
  #         , bgColor = "#3F3F3F"
  #         , fgColor = "#DCDCCC"
  #         , position = Top
  #         , lowerOnStart = True
  #         , pickBroadest = True
  #         , commands = [
  #             Run MultiCpu     ["-t", "CPU: <total>%"] 30
  #           , Run Memory       ["-t", "Mem: <usedbar> (<cache>M)"] 3600
  #           , Run Date         "%a %b %_d %Y %H:%M:%S" "date" 20
  #           , Run StdinReader
  #           , Run Battery      [ "--template" , "Batt: <acstatus>"
  #                              , "--Low"      , "10"        -- units: %
  #                              , "--High"     , "80"        -- units: %
  #                              , "--low"      , "darkred"
  #                              , "--normal"   , "darkorange"
  #                              , "--high"     , "darkgreen"
  #
  #                              , "--" -- battery specific options
  #                                        -- discharging status
  #                                        , "-o" , "<left>% (<timeleft>)"
  #                                        -- AC "on" status
  #                                        , "-O" , "<fc=#dAA520>Charging</fc>"
  #                                        -- charged status
  #                                        , "-i" , "<fc=#006000>Charged</fc>"
  #                              ] 120
  #         , Run DynNetwork     [ "--template" , "<dev>: <tx>kB/s|<rxbar>kB/s"
  #                              , "--Low"      , "1000"       -- units: B/s
  #                              , "--High"     , "500000"       -- units: B/s
  #                              , "--normal"   , "darkorange"
  #                              , "--high"     , "darkred"
  #                              ] 30
  #         ]
  #         , sepChar = "%"
  #         , alignSep = "}{"
  #         , template = "%StdinReader% }{%dynnetwork% | %battery% | %multicpu% | %memory% | <fc=#FFFFCC>%date%</fc>"
  #       }
  #     '';
  #     # browser = "${pkgs.qutebrowser}/bin/qutebrowser";
  #     chromiumApp = name: url: pkgs.writeScriptBin "${name}" ''
  #       ${pkgs.chromium}/bin/chromium --user-data-dir=~/.config/chromium-${name} --app=${url}
  #     '';
  #     custom_teams = chromiumApp "teams" "https://teams.microsoft.com";
  #     flowdock = chromiumApp "flowdock" "https://flowdock.com/app";
  #     wiki = chromiumApp "wiki" "https://wiki.relexsolutions.com";
  #     xmonadConfig = with pkgs; callPackage ./buildXmonad.nix {} cfg.dhallConfigPath cfg.packages;
  #     in
  #     {
  #     enable = true;
  #     configPackage = xmonadConfig;
  #   };
  };
}