groupme-archive.rb

#! /usr/bin/env ruby

require 'httparty'
require 'csv'

GROUP_ID = 'PUT THE GROUP ID HERE'
BEFORE_ID = 'PUT THE LAST MESSAGE BEFORE ID HERE'

class GroupMe
  include HTTParty

  @token = 'PUT THE API TOKEN HERE'

  base_uri 'https://api.groupme.com/v3'

  def self.messages(group_id, before_id, limit)
    get("/groups/#{group_id}/messages?token=#{@token}&before_id=#{before_id}&limit=#{limit}")
  end

  def self.all_messages(group_id, starting_before_id)
    msgs = []
    new_before_id = nil

    loop do
      before_id = new_before_id || starting_before_id

      results = messages(group_id, before_id, 100)

      if results['meta'] && results['meta']['code'] == 200
        puts 'success'
      elsif results['meta'] && results['meta']['code'] != 200
        puts "failed: #{results}"
        break
      else
        puts 'done'
        break
      end

      new_msgs = results['response']['messages']

      new_before_id = new_msgs.last['id']

      msgs.concat(new_msgs)
    end

    msgs
  end
end

messages = GroupMe.all_messages(GROUP_ID, BEFORE_ID)

puts 'Writing CSV'

CSV.open("chat_log_#{Time.now.to_i}.csv", 'wb') do |csv|
  csv << %w(created_at channel name text)
  messages.reverse.each do |msg|
    csv << [
      msg['created_at'],
      'general',
      msg['name'],
      msg['text']
    ]
  end
end