Get OS, basic info

getOs.ts

export enum OS {
  Android = "Android",
  iOS = "iOS",
  Linux = "Linux",
  Mac = "Mac",
  Unix = "Unix",
  Windows = "Windows",
  Other = "Other",
}

const patterns: { [key in OS]: string } = {
  [OS.Android]: "Android",
  [OS.iOS]: "like Mac",
  [OS.Linux]: "Linux",
  [OS.Mac]: "Mac",
  [OS.Unix]: "X11",
  [OS.Windows]: "Win",
  [OS.Other]: "Other",
};

export const getOs = (): OS => {
  const agent = window.navigator?.userAgent ?? window.navigator?.appVersion;
  if (!agent) return OS.Other;

  for (const [key, pattern] of Object.entries(patterns)) {
    if (agent.includes(pattern)) return OS[key as OS];
  }

  return OS.Other;
};