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Google Maps Contributions Downloader

Download all the photospheres of a specific Google Maps contributor as a GeoGuessr json

  1. // ==UserScript==
  2. // @name Google Maps Contributions Downloader
  3. // @namespace gmcd
  4. // @description Download all the photospheres of a specific Google Maps contributor as a GeoGuessr json
  5. // @version 0.2
  6. // @match https://www.google.com/*
  7. // @run-at document-start
  8. // @license MIT
  9. // ==/UserScript==
  10.  
  11. (function() {
  12.   locations = []
  13.   semaphore = null
  14.   n = 0
  15.   label = null
  16.   lastUpdate = 0
  17.   function onLoad() {
  18.     h1 = document.querySelector("h1[jsaction='pane.profile-stats.showStats; keydown:pane.profile-stats.showStats']")
  19.     
  20.     div = document.createElement("div")
  21.     div.style = "display: flex; flex-direction: horizontal; align-items: center;"
  22.     
  23.     h1.parentNode.insertBefore(div, h1)
  24.     div.appendChild(h1)
  25.     
  26.     button = document.createElement("button")
  27.     button.innerText = "💾"
  28.     button.classList = h1.classList
  29.     button.addEventListener("click", onClick)
  30.     div.appendChild(button)
  31.     
  32.     label = document.createElement("label")
  33.     label.classList = h1.classList
  34.     div.appendChild(label)
  35.     
  36.     semaphore = new Semaphore(1000)
  37.   }
  38. 	window.addEventListener("load", onLoad)
  39.  
  40.   function onClick() {
  41.     locations = []
  42.     for (let img of document.getElementsByTagName("img")) {
  43.       if (img.src.includes("-fo")) {
  44.         let panoId = /AF1Q[^=]*/.exec(img.src)[0]
  45.         if (panoId.length == 44) {
  46.           panoId = btoa("\b\n\x12," + panoId)
  47.         } else if (panoId.length == 43) {
  48.           panoId = btoa("\b\n\x12+" + panoId).replaceAll("=", "")
  49.         } else if (panoId.length == 42) {
  50.           panoId = btoa("\b\n\x12+" + panoId).replaceAll("=", "")
  51.         }
  52.         locations.push({ lat: 0, lng:0, panoId: panoId })
  53.       }
  54.     }
  55.     
  56.     n = 0
  57.     label.innerText = 0 + "/" + locations.length
  58.     lastUpdate = 0
  59.     semaphore.add()
  60.     for (let location of locations) {
  61.       semaphore.add(getMetadata, location)
  62.     }
  63.   }
  64.   
  65.   class Semaphore {
  66.     constructor(max = 1) {
  67.       this.max = max
  68.       this.compteur = 0
  69.       this.liste = []
  70.     }
  71.  
  72.     add(f, ...args) {
  73.       return new Promise((resolve, reject) => {
  74.         this.liste.push({
  75.           f, args, resolve, reject
  76.         })
  77.         this.next()
  78.       })
  79.     }
  80.  
  81.     next() {
  82.       if (this.liste.length > 0 && this.compteur < this.max) {
  83.         let { f, args, resolve, reject } = this.liste.shift()
  84.         this.compteur++
  85.         f(...args)
  86.           .then(resolve)
  87.           .catch(reject)
  88.           .finally(() => {
  89.             this.compteur--
  90.             this.next()
  91.           })
  92.       }
  93.     }
  94.   }
  95.   
  96.   function getMetadata(location) {
  97.     return new Promise((resolve, reject) => {
  98.       let url = "https://maps.googleapis.com/$rpc/google.internal.maps.mapsjs.v1.MapsJsInternalService/GetMetadata"
  99.       let init = {
  100.         method: "POST",
  101.         headers: {
  102.           "Content-Type": "application/json+protobuf",
  103.           "x-user-agent": "grpc-web-javascript/0.1"
  104.         },
  105.         body: JSON.stringify([["apiv3"],[],[[[10,atob(location.panoId.replaceAll(".", "")).slice(4)]]],[[1, 2, 3, 4, 6, 8]]])
  106.       }
  107.       fetch(url, init)
  108.         .then((response) => {
  109.           return response.json()
  110.         })
  111.         .then((response) => {
  112.           location.lat = response[1][0][5][0][1][0][2]
  113.           location.lng = response[1][0][5][0][1][0][3]
  114.         })
  115. 				.catch((response) => {
  116.         	console.error(response)
  117. 				})
  118. 				.finally(() => {
  119. 					resolve()
  120.         
  121.           n++
  122.           if (Date.now() - lastUpdate > 1000) {
  123.             label.innerText = n + "/" + locations.length
  124.             lastUpdate = Date.now()
  125.           }
  126.  
  127.           if (n == locations.length) {
  128.             label.innerText = null
  129.             downloadJSON()
  130.           }
  131. 				})
  132.     })
  133.   }
  134.   
  135.   function downloadJSON() {
  136.     let file = new Blob([JSON.stringify(locations)], { type: "application/json" })
  137.     let link = document.createElement("a")
  138.     link.target= "_blank"
  139.     link.href = URL.createObjectURL(file)
  140.     link.download = document.querySelector("h1[jsaction='pane.profile-stats.showStats; keydown:pane.profile-stats.showStats']").innerText + ".json"
  141.     link.click()
  142.     URL.revokeObjectURL(link.href)
  143.   }
  144. })();