// ==UserScript==
// @name         Tweetdeck large image
// @namespace    https://myconan.net
// @version      2.0.9
// @description  No more stupid link for images in tweetdeck
// @author       nanaya
// @match        https://tweetdeck.twitter.com/*
// @grant        none
// @downloadURL  https://hg.myconan.net/ec-userscripts/raw-file/tip/tweetdeck-large-image.user.js
// ==/UserScript==

;(function () {
  'use strict'

  const fix = function (link) {
    // basic sanity check
    if (!link.classList.contains('js-media-image-link')) {
      return
    }

    // don't run again if already run on passed link
    if (link._ecUserscript) {
      return
    }
    link._ecUserscript = true

    const image = link.querySelector('.media-img')
    let url

    // sometimes the image is just background image of the link.
    // strip all query strings and original :size suffix
    if (image == null) {
      url = window.getComputedStyle(link).backgroundImage.replace(/^url\(('|")?(.+?)\1\)$/, '$2')
    } else {
      url = image.src
    }

    const parsedUrl = new URL(url)

    if (parsedUrl.searchParams.get('name') == null) {
      url = url.replace(/(\..+:).+/, '$1orig')
    } else {
      if (parsedUrl.pathname.match(/\.[^.]+$/) !== null) {
        parsedUrl.searchParams.delete('format')
      }
      parsedUrl.searchParams.set('name', 'orig')
      url = parsedUrl.href
    }

    link.setAttribute('href', url)
  }

  // loop through passed nodes (or body if called without arguments)
  const run = function (nodes) {
    if (nodes == null) {
      nodes = [document.body]
    }

    for (let i = 0; i < nodes.length; i++) {
      // first try fixing itself
      fix(nodes[i])

      // and then find all the links inside
      const links = nodes[i].querySelectorAll('.js-media-image-link')

      for (let j = 0; j < links.length; j++) {
        fix(links[j])
      }
    }
  }

  const onMutate = function (mutations) {
    for (const mutation in mutations) {
      run(mutation.addedNodes)
    }
  }

  // the observer
  const observer = new window.MutationObserver(onMutate)

  // start the observer
  observer.observe(document, { childList: true, subtree: true })
  // initial run on existing document
  run()
}).call()