{
  config,
  lib,
  pkgs,
  ...
}:

let
  cfg = config.programs.keepassxc;

  iniFormat = pkgs.formats.ini { };
in
{
  meta.maintainers = with lib.maintainers; [
    bmrips
    d-brasher
  ];

  options.programs.keepassxc = {
    enable = lib.mkEnableOption "keepassxc";

    package = lib.mkPackageOption pkgs "keepassxc" { nullable = true; };

    settings = lib.mkOption {
      type = iniFormat.type;
      default = { };
      example = lib.literalExpression ''
        {
          Browser.Enabled = true;

          GUI = {
            AdvancedSettings = true;
            ApplicationTheme = "dark";
            CompactMode = true;
            HidePasswords = true;
          };

          SSHAgent.Enabled = true;
        }
      '';
      description = ''
        Configuration written to
        {file}`$XDG_CONFIG_HOME/keepassxc/keepassxc.ini`.

        See <https://github.com/keepassxreboot/keepassxc/blob/647272e9c5542297d3fcf6502e6173c96f12a9a0/src/core/Config.cpp#L49-L223>
        for the full list of options.
      '';
    };

    autostart = lib.mkOption {
      type = lib.types.bool;
      default = false;
      example = true;
      description = ''
        Whether to start Keepassxc automatically on login through the XDG autostart mechanism.
      '';
    };
  };

  config = lib.mkIf cfg.enable (
    lib.mkMerge [

      {
        assertions = [
          {
            assertion = cfg.autostart -> config.xdg.autostart.enable;
            message = ''
              {option}`xdg.autostart.enable` has to be enabled in order for
              {option}`programs.keepassxc.autostart` to be effective.
            '';
          }
        ];

        xdg.autostart.entries = lib.mkIf cfg.autostart [
          "${cfg.package}/share/applications/org.keepassxc.KeePassXC.desktop"
        ];
        xdg.configFile."keepassxc/keepassxc.ini" = lib.mkIf (cfg.settings != { }) {
          source = iniFormat.generate "keepassxc-settings" cfg.settings;
        };
      }

      (lib.mkIf (cfg.package != null) {
        home.packages = [ cfg.package ];
        programs.brave.nativeMessagingHosts = [ cfg.package ];
        programs.chromium.nativeMessagingHosts = [ cfg.package ];
        programs.firefox.nativeMessagingHosts = [ cfg.package ];
        programs.floorp.nativeMessagingHosts = [ cfg.package ];
        programs.vivaldi.nativeMessagingHosts = [ cfg.package ];
      })

    ]
  );
}