Fetch GroupMe chat history

getit.rb

require "yajl"

GROUP_ID = ENV["GROUP_ID"]
TOKEN    = ENV["TOKEN"]

file         = File.open("Group-#{GROUP_ID}.txt", "w")
query_string = ""
results      = []

loop do
  res = `curl -s -H"X-Access-Token: #{TOKEN}" https://v2.groupme.com/groups/#{GROUP_ID}/messages#{query_string}`
  break if res.size == 0

  data = Yajl.load(res)
  messages = data["response"]["messages"]

  break if messages.empty?

  results += messages
  query_string = "?before_id=#{messages.last["id"]}"
  print "."
end

name_width = results.map { |r| r["name"] }.map(&:size).max + 1

results.reverse.each do |result|
  name = result["system"] ? "" : result["name"]
  time = Time.at(result["created_at"])
  time_string = "[#{time.strftime('%Y/%m/%d %I:%M%P')}] "

  texts = []

  if result["picture_url"] && result["picture_url"].size > 0
    texts << result["picture_url"]
  end

  if result["text"] && result["text"].size > 0
    result["text"].split("\n").each do |t|
      texts << t
    end
  end

  next if texts.empty?

  texts.each_with_index do |t, i|
    if i == 0
      str = time_string + ("%-#{name_width}s:" % name)
    else
      str = (" " * time_string.size) + "%-#{name_width}s:" % ""
    end

    file.write(str + " " + t + "\n")
  end
end

puts
puts "Results (size): #{results.size}"

file.close