{ config, pkgs, ... }:

let

  myRemote = slug: {
    passwordCommand = [ "secret-tool" "lookup" "server" "kalender.ktiu.net" "account" "ktiu" ];
    userName = "ktiu";
    type = "caldav";
    url = "https://kalender.ktiu.net/ktiu/${slug}";
  };

  calDefaults = {
    khal.type = "calendar";
    local = {
      type = "filesystem";
      fileExt = ".ics";
    };
    vdirsyncer = {
      enable = true;
      conflictResolution = "local wins";
    };
  };

in

{
  services.vdirsyncer.enable = true;
  programs.vdirsyncer.enable = true;

  programs.khal = {
    enable = true;
    locale = {
       timeformat         = "%H:%M";
       dateformat         = "%d %b";
       longdateformat     = "%d %b %Y";
       datetimeformat     = "%d %b %H:%M";
       longdatetimeformat = "%d %b %Y %H:%M";
       weeknumbers        = "left";
    };
    settings = {
      default = {
        timedelta = "5d";
        print_new = "event";
      };
      keybindings.external_edit = "ctrl e";
      view = {
        agenda_event_format = "{calendar-color}{cancelled}{start-end-time-style} {title}{repeat-symbol} {location} {url}{reset}";
        event_format = "{calendar-color}{cancelled}{start}-{end} {title}{repeat-symbol} {location} {url}{reset}";
        "blank_line_before_day" = true;
      };
    };
  };

  accounts.calendar.basePath = "${config.xdg.dataHome}/calendars";
  accounts.calendar.accounts = {

    till = calDefaults // {
      khal.enable = true;
      primary = true;
      khal.color = "light blue";
      remote = myRemote "personal";
    };

    mitlisa = calDefaults // {
      khal.enable = true;
      khal.color = "light magenta";
      remote = myRemote "lisa-und-till";
    };

    family = calDefaults // {
      khal.enable = true;
      khal.color = "dark magenta";
      remote = myRemote "family";
    };

    bdays = calDefaults // {
      khal.enable = true;
      khal.color = "yellow";
      remote = myRemote "geburtstage";
    };

    polit = calDefaults // {
      khal.enable = true;
      khal.color = "dark gray";
      remote = myRemote "polit";
    };

    ihg = calDefaults // {
      khal.enable = true;
      khal.color = "dark cyan";
      remote = {
        type = "http";
        url  = "https://geocom.uni-frankfurt.de/radicale/ihg/5012a739-dbaf-334b-f093-8db1860bc26e/";
      };
    };

    "eintracht_m" = calDefaults // {
      khal.enable = true;
      khal.color = "light red";
      remote = {
        type = "http";
        url  = "http://i.cal.to/ical/257/eintrachtfrankfurt/spielplan/28ae0d30.f781380b-e6f28bd4.ics";
      };
    };

    "eintracht_f" = calDefaults // {
      khal.enable = true;
      khal.color = "dark red";
      remote = {
        type = "http";
        url  = "http://i.cal.to/ical/5940/eintrachtfrankfurt/spielplan-frauen-profis/28ae0d30.f781380b-1763bff2.ics";
      };
    };

    "feiertage" = calDefaults // {
      khal.enable = true;
      khal.color = "dark green";
      remote = {
        type = "http";
        url  = "https://ics.tools/Feiertage/hessen.ics";
      };
    };

    "grid" = calDefaults // {
      khal.enable = true;
      khal.color = "light green";
      remote = {
        type = "caldav";
        url  = "https://cloud.gridisnotajournal.de/remote.php/dav/calendars/till/grid/";
        passwordCommand = [ "secret-tool" "lookup" "server" "cloud.gridisnotajournal.de" "account" "till" ];
        userName = "till";
      };
    };
  };
}