{
  lib,
  config,
  pkgs,
  ...
}: let
  waniKani-bypass-lessons = pkgs.writeShellApplication {
    name = "wanikani-bypass-lessons";
    runtimeInputs = with pkgs; [curl jq];
    text = ''
      #!/usr/bin/env bash

      # this token that starts with "2da24" is read only so i am keeping it public, i have nothing secret on my wanikani account
      # but i need a write token for the second part of this script

      # i am going to read it from /persist/wanikani

      [ ! -e /persist/wanikani ] && echo "/persist/wanikani doesnt exist here :("

      WANIKANI_TOKEN=$(< /persist/wanikani)

      ASSIGNMENT_IDS=$(curl -s -H "Authorization: Bearer 2da24e4a-ba89-4c4a-9047-d08f21e9dd01" "https://api.wanikani.com/v2/assignments?immediately_available_for_lessons=true" | jq ".data[] | .id" )

      echo "number of assignments: $(echo "$ASSIGNMENT_IDS" | wc -l)"

      # "2017-09-05T23:41:28.980679Z" i need to create this from current time

      TIME_STRING=$(date -u +"%Y-%m-%dT%H:%M:%S.%6NZ")
      echo "Current time:"
      echo "$TIME_STRING"

      # echo Starting assignments:
      for assignment_id in $ASSIGNMENT_IDS; do
          echo "Starting assignment $assignment_id"
          curl "https://api.wanikani.com/v2/assignments/$assignment_id/start" \
              -X "PUT" \
              -H "Wanikani-Revision: 20170710" \
              -H "Content-Type: application/json; charset=utf-8" \
              -H "Authorization: Bearer $WANIKANI_TOKEN" \
              -d "{\"assignment\": {\"started_at\": \"$TIME_STRING\" }}"
          echo
          sleep 1
      done
      sleep 3600
    '';
  };
in {
  options.services.wanikani-bypass-lessons.enable = lib.mkEnableOption {
    description = "Enable WaniKani Bypass Lessons";
    default = false;
  };

  config = lib.mkIf config.services.wanikani-bypass-lessons.enable {
    systemd.services.wanikani-bypass-lessons = {
      description = "WaniKani Bypass Lessons";
      wantedBy = ["multi-user.target"];
      serviceConfig = {
        Type = "simple";
        ExecStart = "${lib.getExe waniKani-bypass-lessons}";
        Restart = "always";
        RestartSec = 60 * 60;
      };
    };
  };
}