Pseudo-code to construct the URL for Google Maps pagination

PHOTO

Fri Apr 23 2021 12:16:39 GMT+0000 (UTC)

Saved by @ilyazub #ruby #webscraping #serpapi #googlemaps #deobfuscation #reverse-engineering

if offset
  long ||= -73.91476977539236
  lat ||= 40.68525694561602
  alt ||= 120027.44487325678

  offset ||= 40

  psi ||= "b24JYPPGOoaJrwTXlbHACw"

  google_query = "#{query_scheme_and_domain}/search?tbm=map&authuser=0&hl=en&gl=ua&pb=!4m12!1m3!1d#{alt}!2d#{lat}!3d#{long}!2m3!1f0!2f0!3f0!3m2!1i1920!2i549!4f13.1!7i20!8i#{offset}!10b1!12m8!1m1!18b1!2m3!5m1!6e2!20e3!10b1!16b1!19m4!2m3!1i360!2i120!4i8!20m65!2m2!1i203!2i100!3m2!2i4!5b1!6m6!1m2!1i86!2i86!1m2!1i408!2i240!7m50!1m3!1e1!2b0!3e3!1m3!1e2!2b1!3e2!1m3!1e2!2b0!3e3!1m3!1e3!2b0!3e3!1m3!1e8!2b0!3e3!1m3!1e3!2b1!3e2!1m3!1e10!2b0!3e3!1m3!1e10!2b1!3e2!1m3!1e9!2b1!3e2!1m3!1e10!2b0!3e3!1m3!1e10!2b1!3e2!1m3!1e10!2b0!3e4!2b1!4b1!9b0!22m3!1s#{psi}!2s1i%3A2%2Ct%3A12696%2Ce%3A1%2Cp%3A#{psi}%3A1273!7e81!24m56!1m16!13m7!2b1!3b1!4b1!6i1!8b1!9b1!20b0!18m7!3b1!4b1!5b1!6b1!9b1!13b0!14b0!2b1!5m5!2b1!3b1!5b1!6b1!7b1!10m1!8e3!14m1!3b1!17b1!20m4!1e3!1e6!1e14!1e15!24b1!25b1!26b1!29b1!30m1!2b1!36b1!43b1!52b1!54m1!1b1!55b1!56m2!1b1!3b1!65m5!3m4!1m3!1m2!1i224!2i298!89b1!26m4!2m3!1i80!2i92!4i8!30m28!1m6!1m2!1i0!2i0!2m2!1i458!2i549!1m6!1m2!1i1870!2i0!2m2!1i1920!2i549!1m6!1m2!1i0!2i0!2m2!1i1920!2i20!1m6!1m2!1i0!2i529!2m2!1i1920!2i549!31b1!34m16!2b1!3b1!4b1!6b1!8m4!1b1!3b1!4b1!6b1!9b1!12b1!14b1!20b1!23b1!25b1!26b1!37m1!1e81!42b1!46m1!1e9!47m0!49m1!3b1!50m73!1m68!2m7!1u3!4sOpen+now!5e1!9s0ahUKEwiPrMCgia3uAhUjlYsKHanUBmYQ_KkBCNUJKBg!10m2!3m1!1e1!2m7!1u2!4sTop+rated!5e1!9s0ahUKEwiPrMCgia3uAhUjlYsKHanUBmYQ_KkBCNYJKBk!10m2!2m1!1e1!2m7!1u1!4sCheap!5e1!9s0ahUKEwiPrMCgia3uAhUjlYsKHanUBmYQ_KkBCNcJKBo!10m2!1m1!1e1!2m7!1u1!4sUpscale!5e1!9s0ahUKEwiPrMCgia3uAhUjlYsKHanUBmYQ_KkBCNgJKBs!10m2!1m1!1e2!2m7!1u16!4sVisited!5e1!9s0ahUKEwiPrMCgia3uAhUjlYsKHanUBmYQ_KkBCNkJKBw!10m2!16m1!1e1!2m7!1u16!4sHaven%27t+visited!5e1!9s0ahUKEwiPrMCgia3uAhUjlYsKHanUBmYQ_KkBCNoJKB0!10m2!16m1!1e2!3m1!1u3!3m1!1u2!3m2!1u1!3e1!3m11!1u16!2m4!1m2!16m1!1e1!2sVisited!2m4!1m2!16m1!1e2!2sHaven%27t+visited!4BIAE!2e2!3m2!1b1!3b1!59BQ2dBd0Fn!65m0!69i540&q=#{safe_query}&tch=1&ech=1&psi=#{psi}.1611230833287.1"
end

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SerpApi

@ilyazub

Search metadata example in JSON response from SerpApi Search metadata example in JSON response from SerpApi ruby-prof for SerpApi's Search#parse! Image extraction from Google HTML extract_js_image Pseudo-code to construct the URL for Google Maps pagination Testing generation of the next page URL for Google Maps Testing generation of the next page URL for Google Maps Testing generation of the next page URL for Google Maps Convert altitude and latitude to zoom Convert altitude and latitude to zoom Convert zoom and latitude to altitude Extract latitude, longitude and zoom from the ll parameter in Google Maps Convert the ll URL parameter to pb for the specific results offset on Google Maps Full code to convert ll to pb for Google Maps pagination Scrape Google News results using SerpApi Scrape Google News results using SerpApi

#ruby #rubyonrails

Write a Simple CSV in rails

file = "#{Rails.root}/public/users.csv"
headers = ["Name", "Company Name", "Email", "Role", "Team Name"]
CSV.open(file, 'w', write_headers: true, headers: headers) do |writer|
    Team.all.each do |team|
      team.users.each do |user|
        writer << [user.name, user.company_name , user.email, user.roles&.first&.name, team.name]
      end
    end
  end

#ruby #webscraping #serpapi #googlemaps #deobfuscation #reverse-engineering

Pseudo-code to construct the URL for Google Maps pagination

if offset
  long ||= -73.91476977539236
  lat ||= 40.68525694561602
  alt ||= 120027.44487325678

  offset ||= 40

  psi ||= "b24JYPPGOoaJrwTXlbHACw"

  google_query = "#{query_scheme_and_domain}/search?tbm=map&authuser=0&hl=en&gl=ua&pb=!4m12!1m3!1d#{alt}!2d#{lat}!3d#{long}!2m3!1f0!2f0!3f0!3m2!1i1920!2i549!4f13.1!7i20!8i#{offset}!10b1!12m8!1m1!18b1!2m3!5m1!6e2!20e3!10b1!16b1!19m4!2m3!1i360!2i120!4i8!20m65!2m2!1i203!2i100!3m2!2i4!5b1!6m6!1m2!1i86!2i86!1m2!1i408!2i240!7m50!1m3!1e1!2b0!3e3!1m3!1e2!2b1!3e2!1m3!1e2!2b0!3e3!1m3!1e3!2b0!3e3!1m3!1e8!2b0!3e3!1m3!1e3!2b1!3e2!1m3!1e10!2b0!3e3!1m3!1e10!2b1!3e2!1m3!1e9!2b1!3e2!1m3!1e10!2b0!3e3!1m3!1e10!2b1!3e2!1m3!1e10!2b0!3e4!2b1!4b1!9b0!22m3!1s#{psi}!2s1i%3A2%2Ct%3A12696%2Ce%3A1%2Cp%3A#{psi}%3A1273!7e81!24m56!1m16!13m7!2b1!3b1!4b1!6i1!8b1!9b1!20b0!18m7!3b1!4b1!5b1!6b1!9b1!13b0!14b0!2b1!5m5!2b1!3b1!5b1!6b1!7b1!10m1!8e3!14m1!3b1!17b1!20m4!1e3!1e6!1e14!1e15!24b1!25b1!26b1!29b1!30m1!2b1!36b1!43b1!52b1!54m1!1b1!55b1!56m2!1b1!3b1!65m5!3m4!1m3!1m2!1i224!2i298!89b1!26m4!2m3!1i80!2i92!4i8!30m28!1m6!1m2!1i0!2i0!2m2!1i458!2i549!1m6!1m2!1i1870!2i0!2m2!1i1920!2i549!1m6!1m2!1i0!2i0!2m2!1i1920!2i20!1m6!1m2!1i0!2i529!2m2!1i1920!2i549!31b1!34m16!2b1!3b1!4b1!6b1!8m4!1b1!3b1!4b1!6b1!9b1!12b1!14b1!20b1!23b1!25b1!26b1!37m1!1e81!42b1!46m1!1e9!47m0!49m1!3b1!50m73!1m68!2m7!1u3!4sOpen+now!5e1!9s0ahUKEwiPrMCgia3uAhUjlYsKHanUBmYQ_KkBCNUJKBg!10m2!3m1!1e1!2m7!1u2!4sTop+rated!5e1!9s0ahUKEwiPrMCgia3uAhUjlYsKHanUBmYQ_KkBCNYJKBk!10m2!2m1!1e1!2m7!1u1!4sCheap!5e1!9s0ahUKEwiPrMCgia3uAhUjlYsKHanUBmYQ_KkBCNcJKBo!10m2!1m1!1e1!2m7!1u1!4sUpscale!5e1!9s0ahUKEwiPrMCgia3uAhUjlYsKHanUBmYQ_KkBCNgJKBs!10m2!1m1!1e2!2m7!1u16!4sVisited!5e1!9s0ahUKEwiPrMCgia3uAhUjlYsKHanUBmYQ_KkBCNkJKBw!10m2!16m1!1e1!2m7!1u16!4sHaven%27t+visited!5e1!9s0ahUKEwiPrMCgia3uAhUjlYsKHanUBmYQ_KkBCNoJKB0!10m2!16m1!1e2!3m1!1u3!3m1!1u2!3m2!1u1!3e1!3m11!1u16!2m4!1m2!16m1!1e1!2sVisited!2m4!1m2!16m1!1e2!2sHaven%27t+visited!4BIAE!2e2!3m2!1b1!3b1!59BQ2dBd0Fn!65m0!69i540&q=#{safe_query}&tch=1&ech=1&psi=#{psi}.1611230833287.1"
end

#ruby #webscraping #serpapi #googlemaps #deobfuscation #reverse-engineering

Testing generation of the next page URL for Google Maps

$ bundle exec rails runner 'puts Search.new(engine: :google_maps, q: "coffee", lat: 36.3996184, long: -113.9511419, alt: 2124931.1267513777, offset: 20, psi: "rZkJYJuoINHmrgTP1IVI").query_randomized' | xargs curl -s -k -x $HTTP_PROXY -A 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.122 Safari/537.46' - > f.txt

# "https://www.google.com/search?tbm=map&authuser=0&hl=en&gl=ua&pb=!4m8!1m3!1d2124931.1267513777!2d36.3996184!3d-113.9511419!3m2!1i1024!2i768!4f13.1!7i20!8i20!10b1!12m25!1m1!18b1!2m3!5m1!6e2!20e3!6m16!4b1!23b1!26i1!27i1!41i2!45b1!49b1!63m0!67b1!73m0!74i150000!75b1!89b1!105b1!109b1!110m0!10b1!16b1!19m4!2m3!1i360!2i120!4i8!20m65!2m2!1i203!2i100!3m2!2i4!5b1!6m6!1m2!1i86!2i86!1m2!1i408!2i240!7m50!1m3!1e1!2b0!3e3!1m3!1e2!2b1!3e2!1m3!1e2!2b0!3e3!1m3!1e3!2b0!3e3!1m3!1e8!2b0!3e3!1m3!1e3!2b1!3e2!1m3!1e10!2b0!3e3!1m3!1e10!2b1!3e2!1m3!1e9!2b1!3e2!1m3!1e10!2b0!3e3!1m3!1e10!2b1!3e2!1m3!1e10!2b0!3e4!2b1!4b1!9b0!22m3!1sgpYJYKSwMsH9rgT0_7nAAg!2zMWk6Mix0OjEyNjk2LGU6MSxwOmdwWUpZS1N3TXNIOXJnVDBfN25BQWc6MjM!7e81!24m55!1m15!13m7!2b1!3b1!4b1!6i1!8b1!9b1!20b0!18m6!3b1!4b1!5b1!6b1!13b0!14b0!2b1!5m5!2b1!3b1!5b1!6b1!7b1!10m1!8e3!14m1!3b1!17b1!20m4!1e3!1e6!1e14!1e15!24b1!25b1!26b1!29b1!30m1!2b1!36b1!43b1!52b1!54m1!1b1!55b1!56m2!1b1!3b1!65m5!3m4!1m3!1m2!1i224!2i298!89b1!26m4!2m3!1i80!2i92!4i8!30m28!1m6!1m2!1i0!2i0!2m2!1i458!2i768!1m6!1m2!1i974!2i0!2m2!1i1024!2i768!1m6!1m2!1i0!2i0!2m2!1i1024!2i20!1m6!1m2!1i0!2i748!2m2!1i1024!2i768!34m17!2b1!3b1!4b1!6b1!7b1!8m4!1b1!3b1!4b1!6b1!9b1!12b1!14b1!20b1!23b1!25b1!26b1!37m1!1e81!42b1!46m1!1e9!47m0!49m1!3b1!50m72!1m68!2m7!1u3!4sOpen+now!5e1!9s0ahUKEwizhPrmpK3uAhXBvosKHfR_DigQ_KkBCMgJKBY!10m2!3m1!1e1!2m7!1u2!4sTop+rated!5e1!9s0ahUKEwizhPrmpK3uAhXBvosKHfR_DigQ_KkBCMkJKBc!10m2!2m1!1e1!2m7!1u1!4sCheap!5e1!9s0ahUKEwizhPrmpK3uAhXBvosKHfR_DigQ_KkBCMoJKBg!10m2!1m1!1e1!2m7!1u1!4sUpscale!5e1!9s0ahUKEwizhPrmpK3uAhXBvosKHfR_DigQ_KkBCMsJKBk!10m2!1m1!1e2!2m7!1u16!4sVisited!5e1!9s0ahUKEwizhPrmpK3uAhXBvosKHfR_DigQ_KkBCMwJKBo!10m2!16m1!1e1!2m7!1u16!4sHaven%27t+visited!5e1!9s0ahUKEwizhPrmpK3uAhXBvosKHfR_DigQ_KkBCM0JKBs!10m2!16m1!1e2!3m11!1u16!2m4!1m2!16m1!1e1!2sVisited!2m4!1m2!16m1!1e2!2sHaven%27t+visited!3m1!1u2!3m2!1u1!3e0!3m1!1u3!4BIAE!2e2!3m1!3b1!59BQ2dBd0Fn!65m0!69i540&q=coffee&tch=1&ech=1&psi=rZkJYJuoINHmrgTP1IVI.1611241093531.1"

# Hit next page in browser, copy URL and curl it.

$ curl -s -k -x $HTTP_PROXY -A 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.122 Safari/537.46' 'https://www.google.com/search?tbm=map&authuser=0&hl=en&gl=ua&pb=!4m8!1m3!1d2124931.1267513777!2d-113.9511419!3d36.3996184!3m2!1i1024!2i768!4f13.1!7i20!8i20!10b1!12m25!1m1!18b1!2m3!5m1!6e2!20e3!6m16!4b1!23b1!26i1!27i1!41i2!45b1!49b1!63m0!67b1!73m0!74i150000!75b1!89b1!105b1!109b1!110m0!10b1!16b1!19m4!2m3!1i360!2i120!4i8!20m65!2m2!1i203!2i100!3m2!2i4!5b1!6m6!1m2!1i86!2i86!1m2!1i408!2i240!7m50!1m3!1e1!2b0!3e3!1m3!1e2!2b1!3e2!1m3!1e2!2b0!3e3!1m3!1e3!2b0!3e3!1m3!1e8!2b0!3e3!1m3!1e3!2b1!3e2!1m3!1e10!2b0!3e3!1m3!1e10!2b1!3e2!1m3!1e9!2b1!3e2!1m3!1e10!2b0!3e3!1m3!1e10!2b1!3e2!1m3!1e10!2b0!3e4!2b1!4b1!9b0!22m3!1srZkJYJuoINHmrgTP1IVI!2zMWk6Mix0OjEyNjk2LGU6MSxwOnJaa0pZSnVvSU5IbXJnVFAxSVZJOjIz!7e81!24m55!1m15!13m7!2b1!3b1!4b1!6i1!8b1!9b1!20b0!18m6!3b1!4b1!5b1!6b1!13b0!14b0!2b1!5m5!2b1!3b1!5b1!6b1!7b1!10m1!8e3!14m1!3b1!17b1!20m4!1e3!1e6!1e14!1e15!24b1!25b1!26b1!29b1!30m1!2b1!36b1!43b1!52b1!54m1!1b1!55b1!56m2!1b1!3b1!65m5!3m4!1m3!1m2!1i224!2i298!89b1!26m4!2m3!1i80!2i92!4i8!30m28!1m6!1m2!1i0!2i0!2m2!1i458!2i768!1m6!1m2!1i974!2i0!2m2!1i1024!2i768!1m6!1m2!1i0!2i0!2m2!1i1024!2i20!1m6!1m2!1i0!2i748!2m2!1i1024!2i768!34m17!2b1!3b1!4b1!6b1!7b1!8m4!1b1!3b1!4b1!6b1!9b1!12b1!14b1!20b1!23b1!25b1!26b1!37m1!1e81!42b1!46m1!1e9!47m0!49m1!3b1!50m72!1m68!2m7!1u3!4sOpen+now!5e1!9s0ahUKEwig-8Lpp63uAhVRs4sKHU9qAQkQ_KkBCN8KKBY!10m2!3m1!1e1!2m7!1u2!4sTop+rated!5e1!9s0ahUKEwig-8Lpp63uAhVRs4sKHU9qAQkQ_KkBCOAKKBc!10m2!2m1!1e1!2m7!1u1!4sCheap!5e1!9s0ahUKEwig-8Lpp63uAhVRs4sKHU9qAQkQ_KkBCOEKKBg!10m2!1m1!1e1!2m7!1u1!4sUpscale!5e1!9s0ahUKEwig-8Lpp63uAhVRs4sKHU9qAQkQ_KkBCOIKKBk!10m2!1m1!1e2!2m7!1u16!4sVisited!5e1!9s0ahUKEwig-8Lpp63uAhVRs4sKHU9qAQkQ_KkBCOMKKBo!10m2!16m1!1e1!2m7!1u16!4sHaven%27t+visited!5e1!9s0ahUKEwig-8Lpp63uAhVRs4sKHU9qAQkQ_KkBCOQKKBs!10m2!16m1!1e2!3m11!1u16!2m4!1m2!16m1!1e1!2sVisited!2m4!1m2!16m1!1e2!2sHaven%27t+visited!3m1!1u2!3m2!1u1!3e0!3m1!1u3!4BIAE!2e2!3m1!3b1!59BQ2dBd0Fn!65m0!69i540&q=coffee&tch=1&ech=1&psi=rZkJYJuoINHmrgTP1IVI.1611241905488.1' > correct.txt

# Compare f.txt and correct.txt in a text editor - they almost the same.

#webscraping #serpapi #googlemaps #deobfuscation #reverse-engineering #javascript

Convert altitude and latitude to zoom

const EARTH_RADIUS_IN_METERS = 6371010
const TILE_SIZE = 256
const SCREEN_PIXEL_HEIGHT = 768

var zoom = (altitude, latitude) => Math.log(1 / Math.tan(Math.PI / 180 * 13.1 / 2) * (SCREEN_PIXEL_HEIGHT / 2) * 2 * Math.PI / (TILE_SIZE * altitude / (EARTH_RADIUS_IN_METERS * Math.cos(Math.PI / 180 * latitude)))) / Math.LN2;

#webscraping #serpapi #googlemaps #deobfuscation #reverse-engineering #ruby

Convert zoom and latitude to altitude

EARTH_RADIUS_IN_METERS = 6371010
TILE_SIZE = 256
SCREEN_PIXEL_HEIGHT = 768
RADIUS_X_PIXEL_HEIGHT = 27.3611 * EARTH_RADIUS_IN_METERS * SCREEN_PIXEL_HEIGHT

def altitude(zoom, latitude)
  (RADIUS_X_PIXEL_HEIGHT * Math.cos((latitude * Math::PI) / 180)) / ((2 ** zoom) * TILE_SIZE)
end

#webscraping #serpapi #googlemaps #deobfuscation #reverse-engineering #ruby

Extract latitude, longitude and zoom from the ll parameter in Google Maps

PAGINATION_PARAMETERS_REGEX = %r{
  \A                                      # Start of string
  (?:\s*)                                 # initial possible whitespace
  @(?<latitude>[-+]?\d{1,2}(?:[.,]\d+)?)  # latitude: @10.78472
  (?:\s*,\s*)                             # separator between latitude and longitude
  (?<longitude>[-+]?\d{1,3}(?:[.,]\d+)?)  # longitude: @-110
  (?:\s*,\s*)                             # separator between longitude and zoom
  (?<zoom>\d{1,2}(?:[.,]\d+)?)z           # zoom: 9.22
  \z                                      # End of string
}x

#webscraping #serpapi #googlemaps #deobfuscation #reverse-engineering #ruby

Convert the ll URL parameter to pb for the specific results offset on Google Maps

def pagination(ll, start)
  extracted_parameters = ll.match(PAGINATION_PARAMETERS_REGEX)

  return "" unless extracted_parameters

  "!4m8!1m3!1d" +
    altitude(extracted_parameters[:zoom].to_f, extracted_parameters[:latitude].to_f) +
    "!2d" +
    extracted_parameters[:longitude] +
    "!3d" +
    extracted_parameters[:latitude] +
    "!3m2!1i1024!2i768!4f13.1!7i20!8i" +
    (start || "0") +
    "!10b1!12m25!1m1!18b1!2m3!5m1!6e2!20e3!6m16!4b1!23b1!26i1!27i1!41i2!45b1!49b1!63m0!67b1!73m0!74i150000!75b1!89b1!105b1!109b1!110m0!10b1!16b1!19m4!2m3!1i360!2i120!4i8!20m65!2m2!1i203!2i100!3m2!2i4!5b1!6m6!1m2!1i86!2i86!1m2!1i408!2i240!7m50!1m3!1e1!2b0!3e3!1m3!1e2!2b1!3e2!1m3!1e2!2b0!3e3!1m3!1e3!2b0!3e3!1m3!1e8!2b0!3e3!1m3!1e3!2b1!3e2!1m3!1e10!2b0!3e3!1m3!1e10!2b1!3e2!1m3!1e9!2b1!3e2!1m3!1e10!2b0!3e3!1m3!1e10!2b1!3e2!1m3!1e10!2b0!3e4!2b1!4b1!9b0!22m3!1s!2z!7e81!24m55!1m15!13m7!2b1!3b1!4b1!6i1!8b1!9b1!20b0!18m6!3b1!4b1!5b1!6b1!13b0!14b0!2b1!5m5!2b1!3b1!5b1!6b1!7b1!10m1!8e3!14m1!3b1!17b1!20m4!1e3!1e6!1e14!1e15!24b1!25b1!26b1!29b1!30m1!2b1!36b1!43b1!52b1!54m1!1b1!55b1!56m2!1b1!3b1!65m5!3m4!1m3!1m2!1i224!2i298!89b1!26m4!2m3!1i80!2i92!4i8!30m28!1m6!1m2!1i0!2i0!2m2!1i458!2i768!1m6!1m2!1i974!2i0!2m2!1i1024!2i768!1m6!1m2!1i0!2i0!2m2!1i1024!2i20!1m6!1m2!1i0!2i748!2m2!1i1024!2i768!34m16!2b1!3b1!4b1!6b1!8m4!1b1!3b1!4b1!6b1!9b1!12b1!14b1!20b1!23b1!25b1!26b1!37m1!1e81!42b1!46m1!1e9!47m0!49m1!3b1!50m53!1m49!2m7!1u3!4s!5e1!9s!10m2!3m1!1e1!2m7!1u2!4s!5e1!9s!10m2!2m1!1e1!2m7!1u16!4s!5e1!9s!10m2!16m1!1e1!2m7!1u16!4s!5e1!9s!10m2!16m1!1e2!3m11!1u16!2m4!1m2!16m1!1e1!2s!2m4!1m2!16m1!1e2!2s!3m1!1u2!3m1!1u3!4BIAE!2e2!3m1!3b1!59B!65m0!69i540"
end

#webscraping #serpapi #googlemaps #deobfuscation #reverse-engineering #ruby

Full code to convert ll to pb for Google Maps pagination

# https://regex101.com/r/nOoiJ6/2
PAGINATION_PARAMETERS_REGEX = %r{
  \A                                      # Start of string
  (?:\s*)                                 # initial possible whitespace
  @(?<latitude>[-+]?\d{1,2}(?:[.,]\d+)?)  # latitude: @10.78472
  (?:\s*,\s*)                             # separator between latitude and longitude
  (?<longitude>[-+]?\d{1,3}(?:[.,]\d+)?)  # longitude: @-110
  (?:\s*,\s*)                             # separator between longitude and zoom
  (?<zoom>\d{1,2}(?:[.,]\d+)?)z           # zoom: 9.22
  \z                                      # End of string
}x

EARTH_RADIUS_IN_METERS = 6371010
TILE_SIZE = 256
SCREEN_PIXEL_HEIGHT = 768
RADIUS_X_PIXEL_HEIGHT = 27.3611 * EARTH_RADIUS_IN_METERS * SCREEN_PIXEL_HEIGHT

def pagination(ll, start)
  extracted_parameters = ll.match(PAGINATION_PARAMETERS_REGEX)

  return "" unless extracted_parameters

  "!4m8!1m3!1d" +
    altitude(extracted_parameters[:zoom].to_f, extracted_parameters[:latitude].to_f) +
    "!2d" +
    extracted_parameters[:longitude] +
    "!3d" +
    extracted_parameters[:latitude] +
    "!3m2!1i1024!2i768!4f13.1!7i20!8i" +
    (start || "0") +
    "!10b1!12m25!1m1!18b1!2m3!5m1!6e2!20e3!6m16!4b1!23b1!26i1!27i1!41i2!45b1!49b1!63m0!67b1!73m0!74i150000!75b1!89b1!105b1!109b1!110m0!10b1!16b1!19m4!2m3!1i360!2i120!4i8!20m65!2m2!1i203!2i100!3m2!2i4!5b1!6m6!1m2!1i86!2i86!1m2!1i408!2i240!7m50!1m3!1e1!2b0!3e3!1m3!1e2!2b1!3e2!1m3!1e2!2b0!3e3!1m3!1e3!2b0!3e3!1m3!1e8!2b0!3e3!1m3!1e3!2b1!3e2!1m3!1e10!2b0!3e3!1m3!1e10!2b1!3e2!1m3!1e9!2b1!3e2!1m3!1e10!2b0!3e3!1m3!1e10!2b1!3e2!1m3!1e10!2b0!3e4!2b1!4b1!9b0!22m3!1s!2z!7e81!24m55!1m15!13m7!2b1!3b1!4b1!6i1!8b1!9b1!20b0!18m6!3b1!4b1!5b1!6b1!13b0!14b0!2b1!5m5!2b1!3b1!5b1!6b1!7b1!10m1!8e3!14m1!3b1!17b1!20m4!1e3!1e6!1e14!1e15!24b1!25b1!26b1!29b1!30m1!2b1!36b1!43b1!52b1!54m1!1b1!55b1!56m2!1b1!3b1!65m5!3m4!1m3!1m2!1i224!2i298!89b1!26m4!2m3!1i80!2i92!4i8!30m28!1m6!1m2!1i0!2i0!2m2!1i458!2i768!1m6!1m2!1i974!2i0!2m2!1i1024!2i768!1m6!1m2!1i0!2i0!2m2!1i1024!2i20!1m6!1m2!1i0!2i748!2m2!1i1024!2i768!34m16!2b1!3b1!4b1!6b1!8m4!1b1!3b1!4b1!6b1!9b1!12b1!14b1!20b1!23b1!25b1!26b1!37m1!1e81!42b1!46m1!1e9!47m0!49m1!3b1!50m53!1m49!2m7!1u3!4s!5e1!9s!10m2!3m1!1e1!2m7!1u2!4s!5e1!9s!10m2!2m1!1e1!2m7!1u16!4s!5e1!9s!10m2!16m1!1e1!2m7!1u16!4s!5e1!9s!10m2!16m1!1e2!3m11!1u16!2m4!1m2!16m1!1e1!2s!2m4!1m2!16m1!1e2!2s!3m1!1u2!3m1!1u3!4BIAE!2e2!3m1!3b1!59B!65m0!69i540"
end

def altitude(zoom, latitude)
  ((RADIUS_X_PIXEL_HEIGHT * Math.cos((latitude * Math::PI) / 180)) / ((2 ** zoom) * TILE_SIZE)).to_s
end

#typescript #googlemaps

Google Maps

import { User } from './User'
import { Company } from './Company'

// Instructions to every other class on how they can be an argument to 'addMarker'
// Interface acts as a gatekeeper for props. Does the prop qualify? If so, it can be an argument to the function
interface Mappable {
  location: {
    lat: number;
    lng: number;
  }
}

export class CustomMap {
  private googleMap: google.maps.Map;
  
  constructor(divId: string) {
    this.googleMap = new google.maps.Map(document.getElementById(divId), {
      zoom: 1,
      center: {
        lat: 0,
        lng: 0
      }
    })
  }

  // TS will compare User and Company types and only allow mutual props to be referenced in this function
  addMarker(mappable: Mappable): void {
    // typing 'mappable.' will use intellisense to show props that can be mapped here
    new google.maps.Marker({
      map: this.googleMap,
      position: {
        lat: mappable.location.lat,
        lng: mappable.location.lng
      }
    })
  }

}


// Company and User will be included below for reference
// Company.ts

import faker from 'faker'

export class Company {
  companyName: string;
  catchPhrase: string;
  location: {
    lat: number;
    lng: number;
  }

  constructor() {
    this.companyName = faker.company.companyName()
    this.catchPhrase = faker.company.catchPhrase()
    this.location = {
      lat: parseFloat(faker.address.latitude()),
      lng: parseFloat(faker.address.longitude())
    }

  }
}



// User.ts
import faker from 'faker'

// 'export' will export specific variables - imports will be done in curly braces
// 'export default' should nearly never be used in TypeScript - importing default exports won't use curly braces

export class User {
  name: string;
  location: {
    lat: number;
    lng: number;
  }

  // Objects aren't defined when the class is created so you can not assign values to keys without instantiating the object first
  constructor() {
    this.name = faker.name.firstName()
    this.location = {
      lat: parseFloat(faker.address.longitude()),
      lng: parseFloat(faker.address.latitude())
    } 
  }
}


// Execution - index files:
// index.ts
import faker from 'faker'

// 'export' will export specific variables - imports will be done in curly braces
// 'export default' should nearly never be used in TypeScript - importing default exports won't use curly braces

export class User {
  name: string;
  location: {
    lat: number;
    lng: number;
  }

  // Objects aren't defined when the class is created so you can not assign values to keys without instantiating the object first
  constructor() {
    this.name = faker.name.firstName()
    this.location = {
      lat: parseFloat(faker.address.longitude()),
      lng: parseFloat(faker.address.latitude())
    } 
  }
}

// index.html
// the 'DOCTYPE' heading will cause Google Maps to fail, not sure why
<!-- <!DOCTYPE html> -->
<html>
  <head charset="utf-8">
    <title>Maps</title>
  </head>
  <body>
    <div id="map" style="height: 100%"></div>
    <script src="https://maps.googleapis.com/maps/api/js?key=AIzaSyBNLrJhOMz6idD05pzfn5lhA-TAw-mAZCU"></script>
    <script src="./src/index.ts"></script>
  </body>
</html>

#googleapi #googlemaps #geocode #jquery #javascript

Generate Google Maps marker with Geocode data

// Google Maps  
function initMap(getLat, getLng) {
  const location = { lat: getLat, lng: getLng };
  // The map
  const map = new google.maps.Map(document.getElementById("map"), {
    zoom: 14,
    center: location,
  });
  // The marker
  const marker = new google.maps.Marker({
    position: location,
    map: map,
  });
}

// Geocode
function geocode() {
  var defaultLocation = 'Tbilisi';
  var address = $("#address").text();

  if (addressEn) { // You can add more conditionals to specify address line 2, zip code, etc.
    var myLocation = address;
  } else {
    var myLocation = defaultLocation
  }

  axios.get('https://maps.googleapis.com/maps/api/geocode/json',{
    params:{
      address: myLocation,
      key: 'YOUR_KEY',
    }
  })
  .then(function (response) {
    var lat = response.data.results[0].geometry.location.lat;
    var lng = response.data.results[0].geometry.location.lng;
    initMap(lat, lng);
  })
  .catch(function(error) {
    console.log(error);
  })
}
// Call
geocode();

#ruby #rubyonrails

Compile assets via console and find file with issue

namespace :javascript do
  desc "Compiles each js file"
  task validate: :environment do
    JS_PATH = "app/assets/javascripts/**/*.js"
    Dir[JS_PATH].each do |file_name|
      puts "\n#{file_name}"
      puts Uglifier.compile(File.read(file_name))
    end
  end
end

#ruby #rubyonrails

Head okay vs ok + Data

https://stackoverflow.com/questions/37512603/rails-attach-some-data-to-head-ok-response

#ruby

ruby multiline comment - Google Search

 # Single line comment

=begin
multiline
comment
=end

#ruby

ruby foreach - Google Search

array.each do |item|
  puts "The current array item is: #{item}"
end

#rubyonrails #ruby

Rails Migrations Tricks [Guide + Code] — Cheatsheet included | by J.Charles Gasche | Forest Admin | Medium

$ rake db:reset db:migrate

Pseudo-code to construct the URL for Google Maps pagination

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Pseudo-code to construct the URL for Google Maps pagination

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