# fetches mails for me
{ lib, pkgs, config, ... }:
{
  users.users.mailUser = {
    isNormalUser = true;
    description = "collects mails for me";
    hashedPassword = "!";
    name = "mailfetcher";
    openssh.authorizedKeys.keyFiles = config.users.users.root.openssh.authorizedKeys.keyFiles;
  };


  # configure passwords
  krops.userKeys = {
    "gmail.palipalo9" = {
      user = config.users.users.mailUser.name;
      source = toString <secrets/mail/gmail/palipalo9>;
      requiredBy = ["fetchmail.service"];
    };
    "gmx.palo_van_dalo" = {
      user = config.users.users.mailUser.name;
      source = toString <secrets/mail/gmx/palo_van_dalo>;
      requiredBy = ["fetchmail.service"];
    };
    "gmx.ingolf_wagner" = {
      user = config.users.users.mailUser.name;
      source = toString <secrets/mail/gmx/ingolf.wagner>;
      requiredBy = ["fetchmail.service"];
    };
    "web.pali_palo" = {
      user = config.users.users.mailUser.name;
      source = toString <secrets/mail/web.de/pali_palo>;
      requiredBy = ["fetchmail.service"];
    };
    "siteground.contact" = {
      user = config.users.users.mailUser.name;
      source = toString <secrets/mail/siteground/contact>;
      requiredBy = ["fetchmail.service"];
    };
  };

  environment.systemPackages = [ pkgs.muchsync ];

  # configure accounts
  home-manager.users.mailUser.accounts.email = {
    accounts = {
      palo_van_dalo-gmx = {
        primary = false;
        address = "palo_van_dalo@gmx.de";
        aliases = [ ];
        realName = "Ingolf Wagner";
        userName = "palo_van_dalo@gmx.de";
        passwordCommand = "cat ${toString config.krops.userKeys."gmx.palo_van_dalo".target}";
        imap = {
          host = "imap.gmx.net";
          port = 993;
        };
        mbsync = {
          enable = true;
          create = "both";
        };
        notmuch.enable = true;
      };
      ingolf-wagner-gmx = {
        primary = false;
        address = "ingolf.wagner@gmx.de";
        aliases = [ ];
        realName = "Ingolf Wagner";
        userName = "ingolf.wagner@gmx.de";
        passwordCommand = "cat ${toString config.krops.userKeys."gmx.ingolf_wagner".target}";

        imap = {
          host = "imap.gmx.net";
          port = 993;
        };
        mbsync = {
          enable = true;
          create = "both";
        };
        notmuch.enable = true;
      };
      pali_palo = {
        primary = false;
        address = "pali_palo@web.de";
        aliases = [ ];
        realName = "Ingolf Wagner";
        userName = "pali_palo@web.de";
        passwordCommand = "cat ${toString config.krops.userKeys."web.pali_palo".target}";
        imap = {
          host = "imap.web.de";
          port = 993;
        };
        mbsync = {
          enable = true;
          create = "both";
        };
        notmuch.enable = true;
      };
      gmail = {
        # for google accounts you have to allow 'less secure apps' in accounts.google.com
        primary = true;
        address = "palipalo9@googlemail.com";
        aliases = [ ];
        realName = "Ingolf Wagner";
        userName = "palipalo9@googlemail.com";
        passwordCommand = "cat ${toString config.krops.userKeys."gmail.palipalo9".target}";
        imap = {
          host = "imap.gmail.com";
          port = 993;
        };
        mbsync = {
          enable = true;
          create = "both";
        };
        notmuch.enable = true;
      };
      ingolf-wagner = {
        primary = false;
        address = "contact@ingolf-wagner.de";
        aliases = [ ];
        realName = "Ingolf Wagner";
        userName = "contact@ingolf-wagner.de";
        passwordCommand = "cat ${toString config.krops.userKeys."siteground.contact".target}";
        imap = {
          host = "securees5.sgcpanel.com";
          port = 143;
          tls.useStartTls = true;
        };
        mbsync = {
          enable = true;
          create = "both";
        };
        notmuch.enable = true;
      };
    };
  };


  # configure mbsync
  home-manager.users.mailUser.programs.mbsync.enable = true;
  systemd.services.fetchmail = {
    enable = true;
    serviceConfig = {
      User = config.users.users.mailUser.name;
    };
    environment.NOTMUCH_CONFIG = "${config.users.users.mailUser.home}/.config/notmuch/notmuchrc";
    script = ''
      echo "run mbsync"
      ${pkgs.isync}/bin/mbsync \
        --verbose \
        --all
      echo "run notmuch"
      ${pkgs.notmuch}/bin/notmuch new
      echo "run afew"
      ${pkgs.afew}/bin/afew --new --tag -v
     '';
  };
  systemd.timers.fetchmail = {
    enable = true;
    # timerConfig.OnCalendar = " *-*-* *:00:00";
    timerConfig.OnCalendar = "*:0/10";
    wantedBy = ["multi-user.target"];
  };

  # configure notmuch
  home-manager.users.mailUser.programs.notmuch = {
    enable = true;
    new.tags = [ "unread" "inbox" "new" ];
  };
  home-manager.users.mailUser.home.file."notmuch" = {
    source = "${config.users.users.mailUser.home}/.config/notmuch/notmuchrc";
    target = ".notmuch-config";
  };

  # a few config
  home-manager.users.mailUser.programs.afew = {
      enable = true;
      extraConfig = with lib; let

        template = index: { tags, query, message ? "generic", ...  }: ''
          [Filter.${toString index}]
          query = ${query}
          tags = ${concatStringsSep ";" tags}
          message = ${message}
        '';

        filters = [

          {query = "from:no-reply@backtrace.io"; tags = ["+sononym" "-inbox" "-unread"];}
          {query = "from:linkedin.com"; tags = [ "+linked" "+jobs" "-inbox" ];}
          {query = "from:computerfutures.com OR from:computerfutures.de"; tags = [ "+jobs" "-inbox" ];}
          {query = "from:xing.com"; tags = [ "+jobs" "-inbox" ];}
          {query = "from:ebay.com OR from:ebay.de OR from:ebay.net"; tags = [ "+ebay" "+shop" "+billing"];}
          {query = "from:seek.com.au"; tags = [ "+jobs" "-inbox" ];}
          {query = "from:bahn.de"; tags = [ "+billing" "+bahn" ];}
          {query = "from:fysitech.atlassian.net OR to:engiadina-pwa@noreply.github.com"; tags = [ "+mia" "+work" "-unread" "-inbox"];}
          {query = "from:circleci.com OR (from:noreply@github.com AND to:audio-overlay@googlegroups.com)"; tags = [ "-inbox" "-unread" "+junk" ];}
          {query = "from:getdigital.de"; tags = [ "-inbox" "-unread" "+junk" ];}
          {query = "from:digitalo.de"; tags = [ "-inbox" "-unread" "+junk" ];}
          {query = "from:puppet.com"; tags = [ "-inbox" "-unread" "+junk" ];}
          {query = "from:mixcloudmail.com AND subject:Weekly Update"; tags = [ "-inbox" "-unread" "+junk" ];}
          {query = "from:facebook.com OR from:facebookmail.com"; tags = [ "-inbox" "-unread" "+junk" ];}
          {query = "from:getpocket.com"; tags = [ "-inbox" "-unread" "+junk" ];}
          {query = "from:oknotify2.com"; tags = [ "+okcupid" ];}
          {query = "from:oknotify2.com AND NOT subject:New message"; tags = [ "-inbox" "-unread" "+junk" ];}
          {query = "from:paulaschoice.com"; tags = [ "-inbox" "-unread" "+junk" ];}
          {query = "from:samplemagic.com OR from:wavealchemy.co.uk OR from:creators.gumroad.com"; tags = [ "-inbox" "-unread" "+junk" ];}
          {query = "from:immobilienscout24.de"; tags = [ "-inbox" "-unread" "+junk" ];}
          {query = "from:magix.net"; tags = [ "-inbox" "-unread" "+junk" ];}
          {query = "from:booking.com"; tags = [ "-inbox" "-unread" "+junk" ];}
          {query = "from:hackster.io"; tags = [ "-inbox" "-unread" "+junk" ];}
          {query = "from:trade4less.de"; tags = [ "-inbox" "-unread" "+junk" ];}
          {query = "from:taxback.de OR to:taxback.de"; tags = ["+steuer"] ;}
          {query = "from:campact.de"; tags = ["+campact" "+politics"] ;}
          {query = "from:menospese.com"; tags = ["+junk" "-unread" "-inbox"] ;}
          {query = "from:aliexpress.com"; tags = ["+shop" "+aliexpress"] ;}
          {query = "from:congstar.de"; tags = ["+billing" "+congstar" "-inbox" "-unread"] ;}
          {query = "from:congstarnews.de"; tags = ["+congstar" "-inbox" "-unread" "+junk"] ;}
          {query = "from:fitnessfirst.de"; tags = ["-inbox" "-unread" "+junk"] ;}
          {query = "from:steampowered.com AND NOT ( subject:purchase OR subject:received )"; tags = ["-inbox" "-unread" ] ;}
          {query = "from:steampowered.com AND ( subject:purchase OR subject:received )"; tags = ["+billing" "+steam" ] ;}
          {query = "from:gog.com AND NOT subject:Bestellung"; tags = ["-inbox" "-unread" ] ;}
          {query = "from:gog.com AND subject:Bestellung"; tags = ["+billing" "+gog" ] ;}
          {query = "from:drive-now.com"; tags = ["+billing" "+drivenow" "-inbox" "-unread"] ;}
          {query = "from:mindfactory.de"; tags = ["+shop" "+billing"] ;}
          {query = "from:zalando.de"; tags = ["+shop" "+billing" "+zalando"] ;}
          {query = "from:ing.de"; tags = ["+bank" "+ingdiba"] ;}
          {query = "from:nab.com.au"; tags = ["+bank" "+nab" "-inbox" "-unread"] ;}
          {query = "from:dkb.de"; tags = ["+bank" "+dkb"] ;}
          {query = "from:o2online.de"; tags = ["+billing" "+o2"] ;}
          {query = "from:betfair.com"; tags = ["+work" "+betfair"] ;}
          {query = "from:ghostinspector.com"; tags = ["-unread" "-inbox" "+junk"] ;}
          {query = "from:travis-ci.org AND subject:csv-to-qif"; tags = ["+development" "+csv-to-qif"] ;}
          {query = "to:proaudio@lists.tuxfamily.org"; tags = ["-inbox" "-unread"] ;}
          {query = "tag:lists AND from:nixos1@discoursemail.com"; tags = ["+nixos" "+discourse"] ;}
          {query = "from:limebike.com AND (subject:Funds OR subject:Receipt)" ; tags = ["-inbox" "-unread" "+billing" "+limebike"] ;}
          {query = "from:hetzner.com OR from:hetzner.de" ; tags = ["+hetzner"] ;}
          {query = "from:freemusicarchive.org" ; tags = ["+FMA"] ;}
          {query = "from:namecheap.com" ; tags = ["+namecheap" "+billing"] ;}
          {query = "from:nintendo.com" ; tags = ["+nintendo" "+billing"] ;}
          {query = "from:oculus.com AND subject:receipt" ; tags = ["+oculus" "+billing"] ;}
          {query = "from:vstbuzz.com" ; tags = ["+junk" "-inbox" ] ;}
          {query = "from:runtastic.com" ; tags = ["+junk" "-inbox" ] ;}
          {query = "from:letterboxd.com" ; tags = ["+junk" "-inbox" ] ;}
          {query = "from::microsoftstoreemail.com" ; tags = ["+junk" "-inbox" ] ;}
          {query = "from:car2go.com" ; tags = ["-inbox" "-unread" ] ;}
          {query = "from:sixt.de" ; tags = ["-inbox" "-unread" ] ;}
          {query = "from:meetup.com" ; tags = ["-inbox" "-unread" "+meetup"] ;}
          {query = "from:slack.com" ; tags = ["+slack"] ;}
          {query = "from:keybase.io" ; tags = ["+keybase"] ;}
          {query = "from:tumblr.com" ; tags = ["+junk" "-inbox" "-unread"];}
          {query = "from:jobs2web.com" ; tags = ["+newzealand" "+jobs" "-inbox" ];}
          {query = "from:mailings.gmx.net" ; tags = ["+junk" "-inbox" "-unread"];}
          {query = "from:paypal.de AND subject:Bestätigung"; tags = ["-unread" "+paypal" "+billing"] ;}

          {query = "to:renoise@ingolf-wagner.de OR to:root@renoise.com OR from:renoise.com OR to:admin@renoise.com"; tags = ["+renoise"] ;}
          {query = "from:amazon.de OR from:amazon.com AND NOT to:renoise.com"; tags = ["+shop" "+amazon" "+billing"];}
          {
            query = "to:renoise.com AND NOT ( from:renoise.com OR from:root OR from:hetzner.com OR from:hetzner.de OR from:amazon.com OR from:gmail.com )";
            tags = [ "-inbox" "-unread" "+junk" "+renoise" ];
          }

          # final rules to make imap sync stuff easier
          # there can only be one output folder tag, and theses rules are prioritized
          { query = "tag:fraud" ; tags = ["-inbox" "-archive" "-junk" "-unread" ]; message = "clean up tag fraud";}
          { query = "tag:junk" ; tags = ["-inbox" "-archive" "-fraud" "-unread" ]; message = "clean up tag junk";}
          { query = "tag:archive" ; tags = ["-inbox" "-junk" "-fraud" "-unread" ]; message = "clean up tag archive";}
          { query = "tag:inbox" ; tags = ["-archive" "-junk" "-fraud"]; message = "clean up inbox";}
          { query = "tag:killed"; tags = ["-inbox" "-unread"]; message = "clean up tag killed" ;}

          # remove new tag at the end
          { query = "tag:new"; tags = ["-new"]; message = "remove new tag at the end" ;}

        ];

      in
      ''
      # Tag mails which are mailing lists
      [ListMailsFilter]

      # Tag mails as killed if the thread has been marked as "killed"
      [KillThreadsFilter]

      ${concatStringsSep "\n" (imap0 template filters)}

      '';
  };




}