discord_post_count.rb

#!/usr/bin/env ruby
# encoding: utf-8
Encoding.default_external = "UTF-8"
Encoding.default_internal = "UTF-8"

require "open-uri"
require "json"
require "csv"

GUILD   = "" # Server ID
CHANNEL = "" # A Channel ID for the server, doesn't matter which
TOKEN   = "" # My API Token
COOKIE  = "" # My Cookie
REFERER = "https://discordapp.com/channels/#{GUILD}/#{CHANNEL}"

@member_list = []

more = true
offset = ""

while more == true do # Loop through search result pages
  begin
    data = open(
      "https://discordapp.com/api/v6/guilds/#{GUILD}/members?limit=1000#{offset}",
      "Authorization" => TOKEN,
      "Cookie" => COOKIE).read
    data = JSON.parse(data)

    @member_list << data

    if data.length == 1000
      offset = "&after=#{data.last["user"]["id"]}"
    else
      more = false
    end
  rescue
    more = false
  end
end

@member_list.flatten!.uniq!

# Save the basic member list as backup
File.write("#{File.expand_path(File.dirname(__FILE__))}/member_list-#{GUILD}.json", JSON.pretty_generate(@member_list))

# Loop through each member and look up their profile
# This gives the mutual server list and linked accounts
@member_list.each do |user|
  begin
    data = open(
      "https://discordapp.com/api/v6/guilds/#{GUILD}/messages/search?author_id=#{user["user"]["id"]}&offset=0",
      "Authorization" => TOKEN,
      "Cookie" => COOKIE,
      "Referer" => REFERER).read
    data = JSON.parse(data)

    user["post_count"] = data["total_results"]

    messages = data["messages"].flatten.uniq{ |msg| msg["id"] }
    messages_ = messages.select do |msg|
      msg["author"]["id"] == user["user"]["id"]
    end

    user["last_message"] = messages_.first

    sleep 1 # Sleep to avoid Rate Limit
  rescue OpenURI::HTTPError => err
    puts "Error: #{user["user"]["id"]} (#{err.message})"
  end
end

# Save the expanded list as json
File.write("#{File.expand_path(File.dirname(__FILE__))}/member_list_post_count-#{GUILD}.json", JSON.pretty_generate(@member_list))

@export = []

@member_list.each do |user|
  @export << {
    :nickname     => user["nick"],
    :username     => "#{user["user"]["username"]}##{user["user"]["discriminator"]}",
    :discord_id   => user["user"]["id"],
    :joined_at    => user["joined_at"],
    :post_count   => user["post_count"].nil? ? 0 : user["post_count"],
    :last_message => user["last_message"].nil? ? nil : user["last_message"]["timestamp"]
  }
end

# Create a CSV file for easier reading
File.open(
  "#{File.expand_path(File.dirname(__FILE__))}/member_list_post_count-#{GUILD}.csv", 
  "w+:UTF-16LE:UTF-8") do |file|
  
  csv_file = CSV.generate({
    write_headers: true, 
    headers: ["Nickname","Username","Discord ID", "Join date", "Number of posts", "Last post date"]
  }) do |csv|
    
    @export.each do |user|
      csv << user.map { |key, value| value }
    end
  end

  file.write("\xEF\xBB\xBF") #Byte Order Mark
  file.write(csv_file)
end