{ config, pkgs, ... }:

let
  shell = "${pkgs.dash}/bin/dash";
  riverctl = "${pkgs.river}/bin/riverctl";
  kile = "${pkgs.kile-wl}/bin/kile";

in {

  home.packages = with pkgs; [ kile-wl ];

  systemd.user.services.kile-wl = {
    Unit = {
      Description = "kile layout generator";
      BindsTo = [ "river-session.target" ];
    };
    Service = {
      Type = "simple";
      ExecStart = "${kile}";
    };
    Install = { WantedBy = [ "river-session.target" ]; };
  };

  xdg.dataFile = {
    layout = {
      target = "${config.xdg.configHome}/river/layout.kl";
      source = ./layout.kl;
    };
    init-kile = {
      executable = true;
      target = "${config.xdg.configHome}/river/init-kile";
      text = ''
        #!${shell}

        ${riverctl} default-layout kile

        # Super+H and Super+L to decrease/increase the main ratio
        ${riverctl} map -repeat normal Super Equal send-layout-cmd kile "mod-main-ratio +0.01"
        ${riverctl} map -repeat normal Super Minus send-layout-cmd kile "mod-main-ratio -0.01"

        # Super+Comma and Super+Period. to increment/decrement the main count
        ${riverctl} map normal Super Comma  send-layout-cmd kile "mod-main-count +1"
        ${riverctl} map normal Super Period send-layout-cmd kile "mod-main-count -1"

        ${riverctl} map normal Super G send-layout-cmd kile "padding 5"
        ${riverctl} map normal Super+Shift G send-layout-cmd kile "padding 0"

        # Super+{Up,Right,Down,Left} to change layout orientation
        ${riverctl} map normal Super+Control K send-layout-cmd kile "layout up"
        ${riverctl} map normal Super+Control J send-layout-cmd kile "layout down"
        ${riverctl} map normal Super+Control H send-layout-cmd kile "layout left"
        ${riverctl} map normal Super+Control L send-layout-cmd kile "layout right"
        ${riverctl} map normal Super+Control D send-layout-cmd kile "layout deck"
        ${riverctl} map normal Super+Control F send-layout-cmd kile "layout full"
        ${riverctl} map normal Super+Control W send-layout-cmd kile "layout wide"
        ${riverctl} map normal Super+Control C send-layout-cmd kile "layout cols"
        ${riverctl} map normal Super+Shift Space send-layout-cmd kile "layout default"

        ${riverctl} send-layout-cmd kile "padding 5"
      '';
    };
  };
}