{ lib }:
with lib;
let
  mkColorOption = import ./color.nix { inherit lib; };

  barColorSetModule = types.submodule {
    options = {
      border = mkColorOption {};
      background = mkColorOption {};
      text = mkColorOption {};
    };
  };

  colorSetModule = types.submodule {
    options = {
      border = mkColorOption {};
      childBorder = mkColorOption {};
      background = mkColorOption {};
      text = mkColorOption {};
      indicator = mkColorOption {};
    };
  };
in
types.submodule {
  options = {
    bar = mkOption {
      type = types.submodule {
        options = {
          background = mkColorOption {
            default = "#000000";
            description = "Background color of the bar.";
          };

          statusline = mkColorOption {
            default = "#ffffff";
            description = "Text color to be used for the statusline.";
          };

          separator = mkColorOption {
            default = "#666666";
            description = "Text color to be used for the separator.";
          };

          focusedWorkspace = mkOption {
            type = barColorSetModule;
            default = {
              border = "#4c7899";
              background = "#285577";
              text = "#ffffff";
            };
            description = ''
                    Border, background and text color for a workspace button when the workspace has focus.
                  '';
          };

          activeWorkspace = mkOption {
            type = barColorSetModule;
            default = {
              border = "#333333";
              background = "#5f676a";
              text = "#ffffff";
            };
            description = ''
                    Border, background and text color for a workspace button when the workspace is active.
                  '';
          };

          inactiveWorkspace = mkOption {
            type = barColorSetModule;
            default = {
              border = "#333333";
              background = "#222222";
              text = "#888888";
            };
            description = ''
                    Border, background and text color for a workspace button when the workspace does not
                    have focus and is not active.
                  '';
          };

          urgentWorkspace = mkOption {
            type = barColorSetModule;
            default = {
              border = "#2f343a";
              background = "#900000";
              text = "#ffffff";
            };
            description = ''
                    Border, background and text color for a workspace button when the workspace contains
                    a window with the urgency hint set.
                  '';
          };

          bindingMode = mkOption {
            type = barColorSetModule;
            default = {
              border = "#2f343a";
              background = "#900000";
              text = "#ffffff";
            };
            description =
              "Border, background and text color for the binding mode indicator";
          };
        };
      };
    };

    background = mkOption {
      type = types.str;
      default = "#ffffff";
      description = ''
        Background color of the window. Only applications which do not cover
        the whole area expose the color.
      '';
    };

    focused = mkOption {
      type = colorSetModule;
      default = {
        border = "#4c7899";
        background = "#285577";
        text = "#ffffff";
        indicator = "#2e9ef4";
        childBorder = "#285577";
      };
      description = "A window which currently has the focus.";
    };

    focusedInactive = mkOption {
      type = colorSetModule;
      default = {
        border = "#333333";
        background = "#5f676a";
        text = "#ffffff";
        indicator = "#484e50";
        childBorder = "#5f676a";
      };
      description = ''
        A window which is the focused one of its container,
        but it does not have the focus at the moment.
      '';
    };

    unfocused = mkOption {
      type = colorSetModule;
      default = {
        border = "#333333";
        background = "#222222";
        text = "#888888";
        indicator = "#292d2e";
        childBorder = "#222222";
      };
      description = "A window which is not focused.";
    };

    urgent = mkOption {
      type = colorSetModule;
      default = {
        border = "#2f343a";
        background = "#900000";
        text = "#ffffff";
        indicator = "#900000";
        childBorder = "#900000";
      };
      description = "A window which has its urgency hint activated.";
    };

    placeholder = mkOption {
      type = colorSetModule;
      default = {
        border = "#000000";
        background = "#0c0c0c";
        text = "#ffffff";
        indicator = "#000000";
        childBorder = "#0c0c0c";
      };
      description = ''
        Background and text color are used to draw placeholder window
        contents (when restoring layouts). Border and indicator are ignored.
      '';
    };
  };
}