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

with lib;

let
  cfg = config.services.chunkwm;
  plugins = [
   "border"
   "ffm"
   "tiling"
  ];
in {
  options = {
    services.chunkwm.enable = mkOption {
      type = types.bool;
      default = false;
      description = "Whether to enable the chunkwm window manager.";
    };

    services.chunkwm.package = mkOption {
      type = types.package;
      example = pkgs.chunkwm;
      description = "This option specifies the chunkwm package to use";
    };

    services.chunkwm.hotload = mkOption {
      type = types.bool;
      default = true;
      description = "Whether to enable hotload";
    };

    services.chunkwm.extraConfig = mkOption {
      type = types.lines;
      example = ''
      chunkc tiling::rule --owner Emacs --state tile
      '';
      description = "Additional commands for chunkwmrc";
    };

    services.chunkwm.plugins.dir = mkOption {
      type = types.path;
      default = "/run/current-system/sw/lib/chunkwm/plugins";
      description = "Chunkwm Plugins directory";
    };

    services.chunkwm.plugins.list = mkOption {
      type = types.listOf (types.enum plugins);
      default = plugins;
      example = ["tiling"];
      description = "Chunkwm Plugins to enable";
    };

    services.chunkwm.plugins."border".config = mkOption {
      type = types.lines;
      default = ''
      chunkc set focused_border_color          0xffc0b18b
      chunkc set focused_border_width 4
      chunkc set focused_border_radius 0
      chunkc set focused_border_skip_floating  0
      '';
      description = "Optional border plugin configuration";
    };

    services.chunkwm.plugins."tiling".config = mkOption {
      type = types.lines;
      default = ''
      chunkc set global_desktop_mode           bsp
      chunkc set 2_desktop_mode                monocle
      chunkc set 5_desktop_mode                float

      chunkc set 1_desktop_tree                ~/.chunkwm_layouts/dev_1

      chunkc set global_desktop_offset_top     25
      chunkc set global_desktop_offset_bottom  15
      chunkc set global_desktop_offset_left    15
      chunkc set global_desktop_offset_right   15
      chunkc set global_desktop_offset_gap     15

      chunkc set 1_desktop_offset_top          25
      chunkc set 1_desktop_offset_bottom       15
      chunkc set 1_desktop_offset_left         15
      chunkc set 1_desktop_offset_right        15
      chunkc set 1_desktop_offset_gap          15

      chunkc set 3_desktop_offset_top          15
      chunkc set 3_desktop_offset_bottom       15
      chunkc set 3_desktop_offset_left         15
      chunkc set 3_desktop_offset_right        15

      chunkc set desktop_padding_step_size     10.0
      chunkc set desktop_gap_step_size         5.0

      chunkc set bsp_spawn_left                1
      chunkc set bsp_optimal_ratio             1.618
      chunkc set bsp_split_mode                optimal
      chunkc set bsp_split_ratio               0.66

      chunkc set window_focus_cycle            monitor
      chunkc set mouse_follows_focus           1
      chunkc set window_float_next             0
      chunkc set window_float_center           1
      chunkc set window_region_locked          1
      '';
    };


  };

  config = mkIf cfg.enable {

    security.accessibilityPrograms = [ "${cfg.package}/bin/chunkwm" ];

    environment.etc."chunkwmrc".text = ''
      #!/bin/bash
      chunkc core::plugin_dir ${toString cfg.plugins.dir}
      chunkc core::hotload ${if cfg.hotload then "1" else "0"}
    ''
      + concatMapStringsSep "\n" (p: "# Config for chunkwm-${p} plugin\n"+cfg.plugins.${p}.config or "# Nothing to configure") cfg.plugins.list
      + concatMapStringsSep "\n" (p: "chunkc core::load "+p+".so") cfg.plugins.list
      + "\n" + cfg.extraConfig;

    launchd.user.agents.chunkwm = {
      path = [ cfg.package config.environment.systemPath ];
      serviceConfig.ProgramArguments = [ "${cfg.package}/bin/chunkwm" ]
        ++ [ "-c" "/etc/chunkwmrc" ];
      serviceConfig.RunAtLoad = true;
      serviceConfig.KeepAlive = true;
      serviceConfig.ProcessType = "Interactive";
      # serviceConfig.StandardOutPath = "/tmp/chunkwm.out";
      # serviceConfig.StandardErrorPath = "/tmp/chunkwm.err";
    };

  };
}