diff --git a/script/import_scripts/xenforo.rb b/script/import_scripts/xenforo.rb
new file mode 100644
index 000000000..536c03ec1
--- /dev/null
+++ b/script/import_scripts/xenforo.rb
@@ -0,0 +1,205 @@
+require "mysql2"
+
+require File.expand_path(File.dirname(__FILE__) + "/base.rb")
+
+# Call it like this:
+# RAILS_ENV=production bundle exec ruby script/import_scripts/xenforo.rb
+class ImportScripts::XenForo < ImportScripts::Base
+
+ XENFORO_DB = "xenforo_db"
+ TABLE_PREFIX = "xf_"
+ BATCH_SIZE = 1000
+
+ def initialize
+ super
+
+ @client = Mysql2::Client.new(
+ host: "localhost",
+ username: "root",
+ password: "pa$$word",
+ database: XENFORO_DB
+ )
+ end
+
+ def execute
+ import_users
+ import_categories
+ import_posts
+ end
+
+ def import_users
+ puts '', "creating users"
+
+ total_count = mysql_query("SELECT count(*) count FROM #{TABLE_PREFIX}user;").first['count']
+
+ batches(BATCH_SIZE) do |offset|
+ results = mysql_query(
+ "SELECT user_id id, username, email, custom_title title, register_date created_at,
+ last_activity last_visit_time, user_group_id, is_moderator, is_admin, is_staff
+ FROM #{TABLE_PREFIX}user
+ LIMIT #{BATCH_SIZE}
+ OFFSET #{offset};")
+
+ break if results.size < 1
+
+ create_users(results, total: total_count, offset: offset) do |user|
+ next if user['username'].blank?
+ { id: user['id'],
+ email: user['email'],
+ username: user['username'],
+ title: user['title'],
+ created_at: Time.zone.at(user['created_at']),
+ last_seen_at: Time.zone.at(user['last_visit_time']),
+ moderator: user['is_moderator'] == 1 || user['is_staff'] == 1,
+ admin: user['is_admin'] == 1 }
+ end
+ end
+ end
+
+ def import_categories
+ puts "", "importing categories..."
+
+ # Note that this script uses Prefix as Category, you may want to change this as per your requirement
+ categories = mysql_query("
+ SELECT prefix_id id
+ FROM #{TABLE_PREFIX}thread_prefix
+ ORDER BY prefix_id ASC
+ ").to_a
+
+ create_categories(categories) do |category|
+ {
+ id: category["id"],
+ name: "Category-#{category["id"]}"
+ }
+ end
+ end
+
+ def import_posts
+ puts "", "creating topics and posts"
+
+ total_count = mysql_query("SELECT count(*) count from #{TABLE_PREFIX}post").first["count"]
+
+ batches(BATCH_SIZE) do |offset|
+ results = mysql_query("
+ SELECT p.post_id id,
+ t.thread_id topic_id,
+ t.prefix_id category_id,
+ t.title title,
+ t.first_post_id first_post_id,
+ p.user_id user_id,
+ p.message raw,
+ p.post_date created_at
+ FROM #{TABLE_PREFIX}post p,
+ #{TABLE_PREFIX}thread t
+ WHERE p.thread_id = t.thread_id
+ ORDER BY p.post_date
+ LIMIT #{BATCH_SIZE}
+ OFFSET #{offset};
+ ").to_a
+
+ break if results.size < 1
+
+ create_posts(results, total: total_count, offset: offset) do |m|
+ skip = false
+ mapped = {}
+
+ mapped[:id] = m['id']
+ mapped[:user_id] = user_id_from_imported_user_id(m['user_id']) || -1
+ mapped[:raw] = process_xenforo_post(m['raw'], m['id'])
+ mapped[:created_at] = Time.zone.at(m['created_at'])
+
+ if m['id'] == m['first_post_id']
+ if m['category_id'].to_i == 0 || m['category_id'].nil?
+ mapped[:category] = SiteSetting.uncategorized_category_id
+ else
+ mapped[:category] = category_id_from_imported_category_id(m['category_id'].to_i)
+ end
+ mapped[:title] = CGI.unescapeHTML(m['title'])
+ else
+ parent = topic_lookup_from_imported_post_id(m['first_post_id'])
+ if parent
+ mapped[:topic_id] = parent[:topic_id]
+ else
+ puts "Parent post #{m['first_post_id']} doesn't exist. Skipping #{m["id"]}: #{m["title"][0..40]}"
+ skip = true
+ end
+ end
+
+ skip ? nil : mapped
+ end
+ end
+
+ end
+
+ def process_xenforo_post(raw, import_id)
+ s = raw.dup
+
+ # :) is encoded as
+ s.gsub!(/]+) \/>/, '\1')
+
+ # Some links look like this: http://www.onegameamonth.com
+ s.gsub!(/(.+)<\/a>/, '[\2](\1)')
+
+ # Many phpbb bbcode tags have a hash attached to them. Examples:
+ # [url=https://google.com:1qh1i7ky]click here[/url:1qh1i7ky]
+ # [quote="cybereality":b0wtlzex]Some text.[/quote:b0wtlzex]
+ s.gsub!(/:(?:\w{8})\]/, ']')
+
+ # Remove mybb video tags.
+ s.gsub!(/(^\[video=.*?\])|(\[\/video\]$)/, '')
+
+ s = CGI.unescapeHTML(s)
+
+ # phpBB shortens link text like this, which breaks our markdown processing:
+ # [http://answers.yahoo.com/question/index ... 223AAkkPli](http://answers.yahoo.com/question/index?qid=20070920134223AAkkPli)
+ #
+ # Work around it for now:
+ s.gsub!(/\[http(s)?:\/\/(www\.)?/, '[')
+
+ # [QUOTE]...[/QUOTE]
+ s.gsub!(/\[quote\](.+?)\[\/quote\]/im) { "\n> #{$1}\n" }
+
+ # [URL=...]...[/URL]
+ s.gsub!(/\[url="?(.+?)"?\](.+)\[\/url\]/i) { "[#{$2}](#{$1})" }
+
+ # [IMG]...[/IMG]
+ s.gsub!(/\[\/?img\]/i, "")
+
+ # convert list tags to ul and list=1 tags to ol
+ # (basically, we're only missing list=a here...)
+ s.gsub!(/\[list\](.*?)\[\/list:u\]/m, '[ul]\1[/ul]')
+ s.gsub!(/\[list=1\](.*?)\[\/list:o\]/m, '[ol]\1[/ol]')
+ # convert *-tags to li-tags so bbcode-to-md can do its magic on phpBB's lists:
+ s.gsub!(/\[\*\](.*?)\[\/\*:m\]/, '[li]\1[/li]')
+
+ # [YOUTUBE][/YOUTUBE]
+ s.gsub!(/\[youtube\](.+?)\[\/youtube\]/i) { "\nhttps://www.youtube.com/watch?v=#{$1}\n" }
+
+ # [youtube=425,350]id[/youtube]
+ s.gsub!(/\[youtube="?(.+?)"?\](.+)\[\/youtube\]/i) { "\nhttps://www.youtube.com/watch?v=#{$2}\n" }
+
+ # [MEDIA=youtube]id[/MEDIA]
+ s.gsub!(/\[MEDIA=youtube\](.+?)\[\/MEDIA\]/i) { "\nhttps://www.youtube.com/watch?v=#{$1}\n" }
+
+ # [ame="youtube_link"]title[/ame]
+ s.gsub!(/\[ame="?(.+?)"?\](.+)\[\/ame\]/i) { "\n#{$1}\n" }
+
+ # [VIDEO=youtube;]...[/VIDEO]
+ s.gsub!(/\[video=youtube;([^\]]+)\].*?\[\/video\]/i) { "\nhttps://www.youtube.com/watch?v=#{$1}\n" }
+
+ # [USER=706]@username[/USER]
+ s.gsub!(/\[user="?(.+?)"?\](.+)\[\/user\]/i) { $2 }
+
+ # Remove the color tag
+ s.gsub!(/\[color=[#a-z0-9]+\]/i, "")
+ s.gsub!(/\[\/color\]/i, "")
+
+ s
+ end
+
+ def mysql_query(sql)
+ @client.query(sql, cache_rows: false)
+ end
+end
+
+ImportScripts::XenForo.new.perform