{ pkgs, lib, ... }:

with lib;

let
  networks = [ "bitlbee" "freenode" "hackint" "indymedia" "oftc" ];

  toWeeChat = value:
    /**/ if value == true  then "on"
    else if value == false then "off"
    else if isList value   then concatStringsSep "," value
    else toString value;

  sec = [ "znc.username" "znc.password" "slack.api_tokens" ];

  cfgin = {
    alias.cmd.B = "buffer";
    irc.look.buffer_switch_autojoin = false;
    irc.look.display_join_message = false;
    irc.look.server_buffer = "independent";
    irc.look.temporary_servers = true;

    irc.server_default = {
      addresses = "znc.qyliss.net/6697";
      autoconnect = true;
      capabilities = [ "account-notify" "away-notify" "cap-notify" "multi-prefix" "server-time" "znc.in/server-time-iso" "znc.in/self-message" "znc.in/playback" ];
      nicks = "qyliss";
      password = "\\\${sec.data.znc.password}";
      ssl = true;
      username = "\\\${sec.data.znc.username}";
    };

    irc.server = genAttrs networks (s:
      { username = "'\\\${sec.data.znc.username}/${s}'"; });
    plugins.var.python.zncplayback.servers = networks;

    logger.color.backlog_end = "*default";
    logger.look.backlog = 200;

    plugins.var.python.slack.slack_api_token = "\\\${sec.data.slack.api_tokens}";
    plugins.var.python.slack.auto_open_threads = true;
    plugins.var.python.slack.background_load_all_history = true;
    plugins.var.python.slack.short_buffer_names = true;
    plugins.var.python.slack.show_reaction_nicks = true;
    plugins.var.python.vimode.no_warn = true;

    script.look.sort = "p,n";

    weechat.bar.buflist.hidden = true;
    weechat.bar.fset.items = "fset";
    weechat.bar.input.items = "[mode_indicator]+ [input_prompt]+(away),[input_search],[input_paste],input_text,[vi_buffer]";
    weechat.bar.status.color_bg = 53;
    weechat.bar.status.items = "[otr],[buffer_plugin],buffer_name+(buffer_modes)+{buffer_nicklist_count}+buffer_zoom+buffer_filter,scroll,[lag],[hotlist],completion";
    weechat.bar.title.color_bg = 53;

    weechat.color.chat_nick_colors = [ "cyan" "magenta" "green" "brown" "lightblue" "lightcyan" "lightmagenta" "lightgreen" "blue" ];
    weechat.color.chat_nick_self = "default";
    weechat.color.status_count_other = "white";
    weechat.color.status_data_other = "white";
    weechat.color.status_nicklist_count = "white";
    weechat.color.status_time = "white";

    weechat.completion.default_template = "%(nicks)|%(irc_channels)|%(emoji)";
    weechat.completion.nick_completer = ":";

    weechat.look.buffer_notify_default = "message";
    weechat.look.highlight = [ "spectrum" "crosvm" "qyliss" "alyssa*" "*dntmissher" "*@alyssa" ];
    weechat.look.hotlist_names_count = 10;
    weechat.look.hotlist_names_level = 14;
    weechat.look.mouse = true;
    weechat.look.prefix_align_max = 12;
    weechat.look.save_config_on_exit = false;
    weechat.look.window_title = "WeeChat \\\${info:version}";
  };

  commands =
    map (d: ''/set sec.data.${d} test'') sec ++ [ "/save" ] ++
    map (n: "/server add ${n} ${cfgin.irc.server_default.addresses}") networks ++
    [ "/ignore add osmbot-test oftc #osm-gb" ] ++
    mapAttrsToList (name: value: "/set ${name} ${toWeeChat value}")
                   (flattenAttrs cfgin);

  flattenAttrs' = sep: attrs:
    listToAttrs (concatLists (flip mapAttrsToList attrs (k: v:
      if isAttrs v then mapAttrsToList (k': nameValuePair "${k}${sep}${k'}") (flattenAttrs' sep v)
                 else [ (nameValuePair k v) ])));

  flattenAttrs = flattenAttrs' ".";

  cfg = pkgs.runCommand "weechat-config" {} ''
    ${pkgs.weechat}/bin/weechat-headless -d $out \
        ${concatMapStringsSep " " (cmd: "-r ${escapeShellArg cmd}") commands} \
        -r /save \
        -r /exit
  '';

in

{
  environment.extraInit = ''
    export WEECHAT_HOME="$HOME/state/weechat"
  '';

  environment.systemPackages = with pkgs; [
    (weechat.override {
      configure = { availablePlugins, ... }: {
        scripts = with weechatScripts;
          [ colorize_nicks go wee-slack zncplayback ];
      };
    })
  ];

  home.qyliss.dirs."state/weechat".activationScripts.config = ''
    for file in ${cfg}/*.conf
    do
        if [ "$file" != ${cfg}/sec.conf ]
        then ln -sf $file $(basename $file)
        fi
    done
  '';
}