require "mysql2" require File.expand_path(File.dirname(__FILE__) + "/base.rb") # Call it like this: # RAILS_ENV=production bundle exec ruby script/import_scripts/mybb.rb class ImportScripts::MyBB < ImportScripts::Base MYBB_DB = "mybb_db" TABLE_PREFIX = "mybb_" BATCH_SIZE = 1000 def initialize super @client = Mysql2::Client.new( host: "localhost", username: "root", #password: "", database: MYBB_DB ) end def execute import_users import_categories import_posts import_private_messages suspend_users end def import_users puts '', "creating users" total_count = mysql_query("SELECT count(*) count FROM #{TABLE_PREFIX}users u JOIN #{TABLE_PREFIX}usergroups g ON g.gid = u.usergroup WHERE g.title != 'Banned';").first['count'] batches(BATCH_SIZE) do |offset| results = mysql_query( "SELECT uid id, email email, username, regdate, g.title `group` FROM #{TABLE_PREFIX}users u JOIN #{TABLE_PREFIX}usergroups g ON g.gid = u.usergroup WHERE g.title != 'Banned' ORDER BY u.uid ASC LIMIT #{BATCH_SIZE} OFFSET #{offset};") break if results.size < 1 create_users(results, total: total_count, offset: offset) do |user| { id: user['id'], email: user['email'], username: user['username'], created_at: Time.zone.at(user['regdate']), moderator: user['group'] == 'Super Moderators', admin: user['group'] == 'Administrators' } end end end def import_categories results = mysql_query(" SELECT fid id, pid parent_id, left(name, 50) name, description FROM #{TABLE_PREFIX}forums ORDER BY pid ASC, fid ASC ") create_categories(results) do |row| h = {id: row['id'], name: CGI.unescapeHTML(row['name']), description: CGI.unescapeHTML(row['description'])} if row['parent_id'].to_i > 0 h[:parent_category_id] = category_id_from_imported_category_id(row['parent_id']) end h end end def import_posts puts "", "creating topics and posts" total_count = mysql_query("SELECT count(*) count from #{TABLE_PREFIX}posts").first["count"] batches(BATCH_SIZE) do |offset| results = mysql_query(" SELECT p.pid id, p.tid topic_id, t.fid category_id, t.subject title, t.firstpost first_post_id, p.uid user_id, p.message raw, p.dateline post_time FROM #{TABLE_PREFIX}posts p, #{TABLE_PREFIX}threads t WHERE p.tid = t.tid ORDER BY p.dateline LIMIT #{BATCH_SIZE} OFFSET #{offset}; ") break if results.size < 1 create_posts(results, total: total_count, offset: offset) do |m| skip = false mapped = {} # If you have imported a phpbb forum to mybb previously there might # be a problem with #{TABLE_PREFIX}threads.firstpost. If these ids are wrong # the thread cannot be imported to discourse as the topic post is # missing. This query retrieves the first_post_id manually. As it # will decrease the performance it is commented out by default. # m['first_post_id'] = mysql_query(" # SELECT p.pid id, # FROM #{TABLE_PREFIX}posts p, # #{TABLE_PREFIX}threads t # WHERE p.tid = #{m['topic_id']} AND t.tid = #{m['topic_id']} # ORDER BY p.dateline # LIMIT 1 # ").first['id'] mapped[:id] = m['id'] mapped[:user_id] = user_id_from_imported_user_id(m['user_id']) || -1 mapped[:raw] = process_mybb_post(m['raw'], m['id']) mapped[:created_at] = Time.zone.at(m['post_time']) if m['id'] == m['first_post_id'] mapped[:category] = category_id_from_imported_category_id(m['category_id']) 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 import_private_messages puts "", "private messages are not implemented" end def suspend_users puts '', "banned users are not implemented" end def process_mybb_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\.)?/, '[') s end def mysql_query(sql) @client.query(sql, cache_rows: false) end end ImportScripts::MyBB.new.perform