Cat Errors

Replace error messages with cat images.

You will need to install an extension such as Tampermonkey, Greasemonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Userscripts to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install a user script manager extension to install this script.

(I already have a user script manager, let me install it!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(I already have a user style manager, let me install it!)

// ==UserScript==
// @name         Cat Errors
// @namespace caterrors
// @description Replace error messages with cat images. 
// @version      0.1
// @match        *://*/*
// @grant        none
// ==/UserScript==

(function() {
  "use strict";

  const lang = navigator.language || navigator.userLanguage;
  const langStrings = [
    {
      lang: "en",
      tempDisableBtn: "View Original Page",
      permDisableBtn: "Disable cat errors",
      enableButton: "Enable cat errors",
    },
    {
      lang: "pt",
      tempDisableBtn: "Ver página original", 
      permDisableBtn: "Desativar",
      enableButton: "Ativar", 
    },
  ];

  const text = langStrings.find(l => l.lang === lang.substring(0, 2)) || langStrings[0];

  const errors = [
    {
      code: 400,
      message: "bad request",
    },
    {
      code: 401,
      message: "unauthorized",
    },
    {
      code: 403,
      message: "forbidden",
    },
    {
      code: 404,
      message: "not found",
    },
    {
      code: 500,
      message: "internal server error",
    },
    {
      code: 502,
      message: "bad gateway",
    },
    {
      code: 503,
      message: "service unavailable",
    },
    {
      code: 504,
      message: "gateway timeout",
    }
  ];

  const cats = [
    "😺",
    "😹",
    "😻",
    "😼",
    "😽",
    "🙀",
    "😿",
  ]

  const catEmoji = cats[Math.floor(Math.random() * cats.length)];

  const toggleButton = document.createElement("button");
  toggleButton.innerText = catEmoji;
  toggleButton.style.position = "fixed";
  toggleButton.style.bottom = "0px";
  toggleButton.style.right = "0px";
  toggleButton.style.zIndex = "9999";
  toggleButton.style.padding = "10px";
  toggleButton.style.borderTop = "1px solid #1a1a1a75";
  toggleButton.style.borderLeft = "1px solid #1a1a1a75";
  toggleButton.style.borderRadius = "20px 0 0 0";
  toggleButton.style.backgroundColor = "#1a1a1a50";
  toggleButton.style.backdropFilter = "blur(10px)";
  toggleButton.style.fontSize = "20px";
  toggleButton.style.cursor = "pointer";
  toggleButton.title = "Abrir popup";

  const isEnabled = localStorage.getItem("catErrorsDisabled") !== "true";

  // Cria o painel de popup
  const popup = document.createElement("div");
  popup.innerHTML = `
    <h2 style="margin: 0; font-size: 32px; font: bold;">${catEmoji}${catEmoji}${catEmoji}</h2>
    <div style="margin-top: 10px; font-size: 14px; line-height: 1.5;">
        <button id="toggle" style="margin-top: 10px; padding: 5px 10px; font-size: 14px; border-radius: 100px; background-color: #1a1a1a; border: 1px #2a2a2a solid; color: white; cursor: pointer;">${isEnabled ? text.permDisableBtn : text.enableButton}</button>
    </div>
  `;
  popup.style.position = "fixed";
  popup.style.bottom = "70px";
  popup.style.right = "0";
  popup.style.width = "250px";
  popup.style.display = "none"
  popup.style.padding = "15px";
  popup.style.backgroundColor = "#1a1a1a50";
  popup.style.backdropFilter = "blur(10px)";
  popup.style.color = "#fff";
  popup.style.border = "1px solid #1a1a1a75";
  popup.style.borderStartStartRadius = "8px";
  popup.style.borderEndStartRadius = "8px";

  toggleButton.addEventListener("click", () => {
    popup.style.display = popup.style.display === "none" ? "block" : "none";
  });

  document.addEventListener("click", (event) => {
    if (!popup.contains(event.target) && event.target !== toggleButton) {
      popup.style.display = "none";
    }
  });

  document.body.appendChild(toggleButton);
  document.body.appendChild(popup);

  function toggleCatErrors() {
    const isDisabled = localStorage.getItem("catErrorsDisabled") === "true";
    if (isDisabled) {
      localStorage.removeItem("catErrorsDisabled");
      popup.querySelector("button").innerText = text.permDisableBtn;
    } else {
      localStorage.setItem("catErrorsDisabled", "true");
      popup.querySelector("button").innerText = text.enableButton;
    }
  }
  
  popup.querySelector("#toggle").addEventListener("click", toggleCatErrors);

  const disabled = localStorage.getItem("catErrorsDisabled");
  if (disabled === "temp") {
    localStorage.removeItem("catErrorsDisabled");
    return;
  }
  if (disabled) return;


  function restorePage(){
    localStorage.setItem("catErrorsDisabled", "temp");
    location.reload();
  }

  function disableCatErrors() {
    localStorage.setItem("catErrorsDisabled", "true");
    location.reload();
  }


  errors.forEach(error => {
    console.log(`Cat Error: ${error.code} - ${error.message}`);
    if (document.title.toLowerCase().includes(error.code) || document.body.innerText.toLowerCase().includes(error.message)) {
      document.body.innerHTML = `
        <div style="display:flex; flex-direction: column; align-items: center; justify-content: center; height: 100vh; font-family: Arial, sans-serif;">
          <img src="https://http.cat/${error.code}" alt="Gato" style="max-width: 100%; height: auto; border-radius: 32px;">
          <div style="margin-top: 20px;">
            <button style="padding: 10px 20px; font-size: 16px; border-radius: 8px; background-color: #4CAF50; color: white; border: none; cursor: pointer;" id="restore">${text.tempDisableBtn}</button>
            <button style="padding: 10px 20px; font-size: 16px; border-radius: 8px; background-color: #f44336; color: white; border: none; cursor: pointer; margin-left: 10px;" id="disable">${text.permDisableBtn}</button>
          </div>
        </div>
      `;
      document.body.style.height = "100vh";
      
    }

    document.getElementById("restore")?.addEventListener("click", restorePage);
    document.getElementById("disable")?.addEventListener("click", disableCatErrors);
  });
})();