{ lib, pkgs, ... }:
let
  inherit (import <niveum/lib>) kieran;
  relayPassword = lib.fileContents <system-secrets/weechat/relay>;
in {
  systemd.services.weechat =
  let
    tmux = pkgs.writers.writeDash "tmux" ''
      exec ${pkgs.tmux}/bin/tmux -f ${pkgs.writeText "tmux.conf" ''
        set-option -g prefix `
        unbind-key C-b
        bind ` send-prefix

        set-option -g status off
        set-option -g default-terminal screen-256color

        #use session instead of windows
        bind-key c new-session
        bind-key p switch-client -p
        bind-key n switch-client -n
        bind-key C-s switch-client -l
      ''} "$@"
    '';
    weechat = pkgs.weechat-declarative.override {
      config = {
        scripts = [
          pkgs.weechatScripts.weechat-autosort
          pkgs.weechatScripts.colorize_nicks
          pkgs.weechatScripts.weechat-matrix
        ];
        settings = let nick = "kmein"; in {
          weechat = {
            look.mouse = true;
            color.chat_nick_colors = lib.lists.subtractLists (lib.range 52 69 ++ lib.range 231 248) (lib.range 31 254);
            look.highlight_tags = [
              "irc_notice+nick_niveum"
            ];
          };
          irc = {
            look = {
              server_buffer = "independent";
              color_nicks_in_nicklist = true;
            };
            server_default = {
              nicks = nick;
              msg_part = "tschö mit ö";
              msg_quit = "ciao kakao";
              msg_kick = "warum machst du diese?";
              realname = kieran.name;
            };
            server = {
              hackint = {
                autoconnect = true;
                address = "irc.hackint.org/6697";
                ipv6 = true;
                ssl = true;
                autojoin = [ "#krebs" "#nixos" "#the_playlist" ];
                sasl_mechanism = "plain";
                sasl_username = nick;
                sasl_password = lib.strings.fileContents <system-secrets/irc/hackint>;
              };
              libera = {
                autoconnect = true;
                address = "irc.libera.chat/6697";
                ssl = true;
                autojoin = [ "#flipdot" "#haskell" "#nixos" "#fysi" "#binaergewitter" ];
                sasl_mechanism = "plain";
                sasl_username = nick;
                sasl_password = lib.strings.fileContents <system-secrets/irc/libera>;
              };
              oftc = {
                autoconnect = true;
                address = "irc.oftc.net/6697";
                ssl = true;
                ipv6 = true;
                command = lib.concatStringsSep "\\;" [
                  "/msg nickserv identify ${lib.strings.fileContents <system-secrets/irc/oftc>}"
                  "/msg nickserv set cloak on"
                ];
                autojoin = [ "#osm" "#osm-de" "#home-manager" ];
              };
              retiolum = {
                autoconnect = true;
                address = "irc.r";
                autojoin = [ "#xxx" "#brockman" "#flix" "#niveum" ];
                command = lib.concatStringsSep "\\;" [
                  "/oper admin aidsballs"
                  "/msg nickserv always-on true"
                  "/msg nickserv autoreplay-missed on"
                  "/msg nickserv auto-away"
                ];
                sasl_mechanism = "plain";
                sasl_username = nick;
                sasl_password = lib.strings.fileContents <system-secrets/irc/retiolum>;
              };
              news = {
                autoconnect = true;
                address = "news.r";
                autojoin = [ "#cook" "#drachengame" "#oepnv" "#kmeinung" "#memes" ];
                command = "/oper aids balls";
              };
            };
          };
          logger.level.irc.news = 0;
          matrix.server.nibbana = {
            address = "nibbana.jp";
            username = nick;
            password = lib.strings.fileContents <system-secrets/matrix/nibbana>;
            autoconnect = true;
          };
          alias.cmd.mod = "/quote omode $channel +o $nick";
          relay = {
            port.weechat = 9000;
            network.password = relayPassword;
          };
          filters = {
            zerocovid = {
              buffer = "*";
              tags = "*";
              regex = "[kc]orona|💉|🤒|😷|[kc]ovid|virus|lockdown|va[kc][sc]in|mutante|mutation|impf|pandemi|κορ[ωο]ν[αο]ϊό|корона|expert|infe[ck]t|infizi|in[cz]iden[cz]|sars-cov|drosten|virolog|lauterbach|delta|omi[ck]ron|epidemi|booster|r-wert";
            };
            joinquit = {
              buffer = "*";
              tags = [ "irc_join" "irc_part" "irc_quit" "irc_nick" ];
              regex = "*";
            };
            playlist_topic = {
              buffer = "irc.*.#the_playlist";
              tags = "irc_topic";
              regex = "*";
            };
            brockman_notice = {
              buffer = "irc.news.*";
              tags = "irc_notice";
              regex = "*";
            };
          };
        };
        extraCommands = ''/matrix connect nibbana'';
      };
    };
  in {
    description = "Weechat bouncer";
    after = [ "network.target" ];
    wantedBy = [ "multi-user.target" ];
    restartIfChanged = true;
    path = [ pkgs.alacritty.terminfo ];
    environment.WEECHAT_HOME = "/var/lib/weechat";
    preStart = "${pkgs.coreutils}/bin/rm $WEECHAT_HOME/*.conf";
    script = "${tmux} -2 new-session -d -s IM ${weechat}/bin/weechat";
    preStop = "${tmux} kill-session -t IM";
    serviceConfig = {
      User = "weechat";
      Group = "weechat";
      RemainAfterExit = true;
      Type = "oneshot";
    };
  };

  users.groups.weechat = {};
  users.extraUsers.weechat = {
    useDefaultShell = true;
    openssh.authorizedKeys.keys = kieran.sshKeys pkgs ++ [
      "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIC+KVDmYYH7mA8v81e9O3swXm3ZVYY9t4HP65ud61uXy weechat_android@heym"
    ];
    createHome = true;
    group = "weechat";
    home = "/var/lib/weechat";
    isSystemUser = true;
    packages = [ pkgs.tmux ];
  };
}