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

with lib;

let

  cfg = config.programs.custom.taskwarrior;
  unstable = import <nixpkgs-unstable> { };

  taskNextWeek = pkgs.writeShellScriptBin "taskweek" # sh
    ''
      ${pkgs.taskwarrior}/bin/task \
                          export \
                          status:pending and \( due.before:6days \) \
          | ${pkgs.jq}/bin/jq '[.[] | { Day: .due, ID: .id, Description: .description } ] | sort_by(.Day)' \
          | ${pkgs.miller}/bin/mlr --ijson --opprint put "\$Day = strftime(strptime(\$Day,\"%Y%m%dT%H%M%SZ\")$(date +%z)00,\"%A\")"
    '';

  tsak = pkgs.writeShellScriptBin "tsak" # sh
    ''
      ${pkgs.taskwarrior}/bin/task "$@"
    '';

in {

  options.programs.custom.taskwarrior.enable =
    mkEnableOption "Enable Taskwarrior services";

  config = mkIf cfg.enable {

    environment.systemPackages = with pkgs; [
      taskwarrior
      timewarrior
      tasksh
      taskNextWeek
      tsak

      unstable.vit

      python # needed for hooks

      taskwarrior-hooks

      # bugwarrior
      (let
        mypython = let
          packageOverrides = self: super: {
            bugwarrior = super.bugwarrior.overridePythonAttrs (old: {
              propagatedBuildInputs = old.propagatedBuildInputs
                ++ [ super.setuptools ];
            });
          };
        in pkgs.python3.override { inherit packageOverrides; };
      in mypython.pkgs.bugwarrior)

    ];

  };

}