☰

Letterboxd Rating Base 10

Changes the Letterboxd rating to Base 10

  1. // ==UserScript==
  2. // @name        Letterboxd Rating Base 10
  3. // @namespace   https://github.com/Tetrax-10
  4. // @description Changes the Letterboxd rating to Base 10
  5. // @icon        https://raw.githubusercontent.com/worldwidewaves/letterboxd-scripts/master/img/letterboxd_icon.png
  6. // @license     MIT
  7. // @version     1.0
  8. // @match        *://*.letterboxd.com/film/*
  9. // ==/UserScript==
  10.  
  11. ;(async () => {
  12.     async function waitForElement(selector, timeout = null, nthElement = 1) {
  13.         // wait till document body loads
  14.         while (!document.body) {
  15.             await new Promise((resolve) => setTimeout(resolve, 10))
  16.         }
  17.  
  18.         nthElement -= 1
  19.  
  20.         return new Promise((resolve) => {
  21.             if (document.querySelectorAll(selector)?.[nthElement]) {
  22.                 return resolve(document.querySelectorAll(selector)?.[nthElement])
  23.             }
  24.  
  25.             const observer = new MutationObserver(async () => {
  26.                 if (document.querySelectorAll(selector)?.[nthElement]) {
  27.                     resolve(document.querySelectorAll(selector)?.[nthElement])
  28.                     observer.disconnect()
  29.                 } else {
  30.                     if (timeout) {
  31.                         async function timeOver() {
  32.                             return new Promise((resolve) => {
  33.                                 setTimeout(() => {
  34.                                     observer.disconnect()
  35.                                     resolve(false)
  36.                                 }, timeout)
  37.                             })
  38.                         }
  39.                         resolve(await timeOver())
  40.                     }
  41.                 }
  42.             })
  43.  
  44.             observer.observe(document.body, {
  45.                 childList: true,
  46.                 subtree: true,
  47.             })
  48.         })
  49.     }
  50.  
  51.     const currentURL = location.protocol + "//" + location.hostname + location.pathname
  52.  
  53.     if (/^(https?:\/\/letterboxd\.com\/film\/[^\/]+(?:\/\?.*)?\/?(crew|details|genres)?)$/.test(currentURL)) {
  54.         const ratingElement = await waitForElement(".tooltip.display-rating", 10000)
  55.         if (ratingElement.innerText) {
  56.             let rating = (parseFloat(ratingElement.innerText) * 2).toFixed(1)
  57.             ratingElement.innerText = rating
  58.         }
  59.     }
  60. })()