plane/apps/app/components/command-palette/change-interface-theme.tsx

import React, { Dispatch, SetStateAction, useEffect, useState } from "react";

// cmdk
import { Command } from "cmdk";
import { THEMES_OBJ } from "constants/themes";
import { useTheme } from "next-themes";
import { SettingIcon } from "components/icons";
import userService from "services/user.service";
import useUser from "hooks/use-user";
// helper
import { unsetCustomCssVariables } from "helpers/theme.helper";

type Props = {
  setIsPaletteOpen: Dispatch<SetStateAction<boolean>>;
};

export const ChangeInterfaceTheme: React.FC<Props> = ({ setIsPaletteOpen }) => {
  const [mounted, setMounted] = useState(false);

  const { setTheme } = useTheme();

  const { user, mutateUser } = useUser();

  const updateUserTheme = (newTheme: string) => {
    if (!user) return;

    unsetCustomCssVariables();

    setTheme(newTheme);

    mutateUser((prevData: any) => {
      if (!prevData) return prevData;

      return {
        ...prevData,
        theme: {
          ...prevData?.theme,
          theme: newTheme,
        },
      };
    }, false);

    userService.updateUser({
      theme: {
        ...user.theme,
        theme: newTheme,
      },
    });
  };

  // useEffect only runs on the client, so now we can safely show the UI
  useEffect(() => {
    setMounted(true);
  }, []);

  if (!mounted) return null;

  return (
    <>
      {THEMES_OBJ.filter((t) => t.value !== "custom").map((theme) => (
        <Command.Item
          key={theme.value}
          onSelect={() => {
            updateUserTheme(theme.value);
            setIsPaletteOpen(false);
          }}
          className="focus:outline-none"
        >
          <div className="flex items-center gap-2 text-custom-text-200">
            <SettingIcon className="h-4 w-4 text-custom-text-200" />
            {theme.label}
          </div>
        </Command.Item>
      ))}
    </>
  );
};