vaccination_appointment_finder_berlin.rb

require "colorize"
require "faraday"
require "json"
require "pry"

AUTO_OPEN = true
BASE_URL = "https://www.doctolib.de/availabilities.json"
START_DATE = "2021-06-07"
DAYS = 35

# url = 
CENTERS = {
  "biontech_arena" => { 
    id: "158431", 
    name: "Arena Berlin (BioNTech)",
    params: "visit_motive_ids=2495719&agenda_ids=397766-397800-402408-397776&practice_ids=158431"
  },
  "moderna_erika" => { 
    id: "158437", 
    name: "Erika-Heß-Eisstadion (Moderna)",
    params: "visit_motive_ids=2537716&agenda_ids=457956-457952-457975-457943-457979-457947-457951-457954-457902-457959-457903-457976-457966-457901-457913-457970-457941-457945-457946-457955-457953-457968-457971-457920-457973-457977-457960-457961-457963-457964-457906-457936-457967-457944-457910&practice_ids=158437"
  },
  "biontech_messe" => { 
    id: "158434", 
    name: "Messe Berlin (BioNTech)",
    params: "visit_motive_ids=2495719&agenda_ids=397844-397846-457504-397845-457511-457405-457406-457411-457415-457416-457418-457426-457436-457439-457443-457453-457477-457487-457497-404659-457400-457404-457407-457408-457409-457410-457412-457414-457419-457420-457421-457424-457425-457427-457428-457429-457430-457432-457435-457442-457448-457457-457463-457470-457483-457489-457493&practice_ids=158434"
  },
  "biontech_tegel" => { 
    id: "158436", 
    name: "Flughafen Berlin-Tegel (BioNTech)",
    params: "visit_motive_ids=2495719&agenda_ids=397843-457297-397841-397842-457512-457515-457460-457514-457363-457500-404656-457510-457513-457268-457285-457293-457324-457341-457250-457251-457252-457253-457254-457255-457256-457263-457264-457265-457266-457267-457271-457275-457276-457277-457279-457281-457282-457286-457287-457289-457290-457292-457294-457295-457300-457301-457303-457309-457317-457323-457326-457331-457333-457338-457343-457349-457358-457399-457413&practice_ids=158436"
  },
  "moderna_tegel" => { 
    id: "158436", 
    name: "Flughafen Berlin-Tegel (Moderna)",
    params: "visit_motive_ids=2537716&agenda_ids=465584-465619-465575-465527-465534-465598-465601-465651-465543-466146-465630-465532-465526-465609-465615-465653-466127-466144-466128-466129-466130-466131-466132-466133-466134-466135-466136-466137-466138-466139-466140-466141-466143-466145-466147-466148-466149-466150-466151-466152-466153-466154-465678-465550-465553-465594-465701-465555-465558-465580-465582-465592&practice_ids=158436"
  },
  "moderna_tempelhof" => { 
    id: "158433", 
    name: "Flughafen Tempelhof (Moderna)",
    params: "visit_motive_ids=2537716&agenda_ids=467901-467933-467894-467897-467898-467899-467895-467896-467900-467908-467912-467893-467903-467905-467906-467907-467910-467911-467934-467935-467936-467937-467938-467939-467940&practice_ids=158433"
  },
  "moderna_velodrom"  => { 
    id: "158435", 
    name: "Velodrom Berlin (Moderna)",
    params: "visit_motive_ids=2495719&agenda_ids=457319-404654-457312-457215-397973-457206-457227-457204-457208-457229-457280-457296-397974-397972-457310-457210-457212-457213-457216-457218-457274-457278-457283-457288-457291-457299-457304-457306-457315-457321&practice_ids=158435"
  }
}

def send_request(center, params, date)
  request_params = [
    "start_date=#{date}",
    "destroy_temporary=true",
    "limit=#{DAYS}",
    params
  ].join("&")

  url = [BASE_URL, request_params].join("?")

  response = Faraday.get(url) do |req|
   req.headers["User-Agent"] = "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_9_3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/35.0.1916.47 Safari/537.36"
  end

  puts "Error fetching dates for #{center}".red unless response.success?

  JSON.parse(response.body)
end

counter = 1
loop do 
  puts "Check round #{counter}".light_magenta
  sleep_time = 5

  CENTERS.each do |key, c|
    puts ".. Checking #{c.fetch(:name)}"
    json = send_request(c.fetch(:name), c.fetch(:params), START_DATE)

    availabilities = json.fetch("availabilities", [])
    total = json.fetch("total", 0)

    if availabilities.empty? && total == 0
      # Nothing available
      puts ".... No appointments available".light_black
    else
      # Appointments available
      practice_url = "https://www.doctolib.de/institut/berlin/ciz-berlin-berlin?pid=practice-#{c.fetch(:id)}"
      sleep_time = 60

      system("open -a Safari #{practice_url}") if AUTO_OPEN == true

      puts ".... Appointment available to book: #{practice_url}".green

      availabilities.each do |a|
        date = a.fetch("date")
        slots = a.fetch("slots", [])

        puts "...... #{date} - Slots available: #{slots.size}".green if slots.size > 0
      end

      # next_slot = json.fetch("next_slot", "") 
      # puts "...... Next available slot #{next_slot}".yellow
    end
  end

  puts
  puts "Sleeping #{sleep_time} seconds".light_black
  puts
  sleep sleep_time
  counter += 1
end