require 'mysql2' require File.expand_path(File.dirname(__FILE__) + "/base.rb") require 'htmlentities' class ImportScripts::VBulletin < ImportScripts::Base BATCH_SIZE = 1000 # CHANGE THESE BEFORE RUNNING THE IMPORTER DATABASE = "iref" TIMEZONE = "Asia/Kolkata" def initialize super @old_username_to_new_usernames = {} @tz = TZInfo::Timezone.get(TIMEZONE) @htmlentities = HTMLEntities.new @client = Mysql2::Client.new( host: "localhost", username: "root", database: DATABASE ) end def execute import_groups import_users import_categories import_topics import_posts close_topics post_process_posts end def import_groups puts "", "importing groups..." groups = mysql_query <<-SQL SELECT usergroupid, title FROM usergroup ORDER BY usergroupid SQL create_groups(groups) do |group| { id: group["usergroupid"], name: @htmlentities.decode(group["title"]).strip } end end def import_users puts "", "importing users" user_count = mysql_query("SELECT COUNT(userid) count FROM user").first["count"] batches(BATCH_SIZE) do |offset| users = mysql_query <<-SQL SELECT userid, username, homepage, usertitle, usergroupid, joindate, email FROM user ORDER BY userid LIMIT #{BATCH_SIZE} OFFSET #{offset} SQL break if users.size < 1 create_users(users, total: user_count, offset: offset) do |user| username = @htmlentities.decode(user["username"]).strip { id: user["userid"], name: username, username: username, email: user["email"].presence || fake_email, website: user["homepage"].strip, title: @htmlentities.decode(user["usertitle"]).strip, primary_group_id: group_id_from_imported_group_id(user["usergroupid"]), created_at: parse_timestamp(user["joindate"]), post_create_action: proc do |u| @old_username_to_new_usernames[user["username"]] = u.username import_profile_picture(user, u) import_profile_background(user, u) end } end end end def import_profile_picture(old_user, imported_user) query = mysql_query <<-SQL SELECT filedata, filename FROM customavatar WHERE userid = #{old_user["userid"]} ORDER BY dateline DESC LIMIT 1 SQL picture = query.first return if picture.nil? file = Tempfile.new("profile-picture") file.write(picture["filedata"].encode("ASCII-8BIT").force_encoding("UTF-8")) file.rewind upload = Upload.create_for(imported_user.id, file, picture["filename"], file.size) return if !upload.persisted? imported_user.create_user_avatar imported_user.user_avatar.update(custom_upload_id: upload.id) imported_user.update(uploaded_avatar_id: upload.id) ensure file.close rescue nil file.unlind rescue nil end def import_profile_background(old_user, imported_user) query = mysql_query <<-SQL SELECT filedata, filename FROM customprofilepic WHERE userid = #{old_user["userid"]} ORDER BY dateline DESC LIMIT 1 SQL background = query.first return if background.nil? file = Tempfile.new("profile-background") file.write(background["filedata"].encode("ASCII-8BIT").force_encoding("UTF-8")) file.rewind upload = Upload.create_for(imported_user.id, file, background["filename"], file.size) return if !upload.persisted? imported_user.user_profile.update(profile_background: upload.url) ensure file.close rescue nil file.unlink rescue nil end def import_categories puts "", "importing top level categories..." categories = mysql_query("SELECT forumid, title, description, displayorder, parentid FROM forum ORDER BY forumid").to_a top_level_categories = categories.select { |c| c["parentid"] == -1 } create_categories(top_level_categories) do |category| { id: category["forumid"], name: @htmlentities.decode(category["title"]).strip, position: category["displayorder"], description: @htmlentities.decode(category["description"]).strip } end puts "", "importing children categories..." children_categories = categories.select { |c| c["parentid"] != -1 } top_level_category_ids = Set.new(top_level_categories.map { |c| c["forumid"] }) # cut down the tree to only 2 levels of categories children_categories.each do |cc| while !top_level_category_ids.include?(cc["parentid"]) cc["parentid"] = categories.detect { |c| c["forumid"] == cc["parentid"] }["parentid"] end end create_categories(children_categories) do |category| { id: category["forumid"], name: @htmlentities.decode(category["title"]).strip, position: category["displayorder"], description: @htmlentities.decode(category["description"]).strip, parent_category_id: category_id_from_imported_category_id(category["parentid"]) } end end def import_topics puts "", "importing topics..." # keep track of closed topics @closed_topic_ids = [] topic_count = mysql_query("SELECT COUNT(threadid) count FROM thread").first["count"] batches(BATCH_SIZE) do |offset| topics = mysql_query <<-SQL SELECT t.threadid threadid, t.title title, forumid, open, postuserid, t.dateline dateline, views, t.visible visible, sticky, p.pagetext raw FROM thread t JOIN post p ON p.postid = t.firstpostid ORDER BY t.threadid LIMIT #{BATCH_SIZE} OFFSET #{offset} SQL break if topics.size < 1 create_posts(topics, total: topic_count, offset: offset) do |topic| raw = preprocess_post_raw(topic["raw"]) rescue nil next if raw.blank? topic_id = "thread-#{topic["threadid"]}" @closed_topic_ids << topic_id if topic["open"] == "0" t = { id: topic_id, user_id: user_id_from_imported_user_id(topic["postuserid"]) || Discourse::SYSTEM_USER_ID, title: @htmlentities.decode(topic["title"]).strip[0...255], category: category_id_from_imported_category_id(topic["forumid"]), raw: raw, created_at: parse_timestamp(topic["dateline"]), visible: topic["visible"].to_i == 1, views: topic["views"], } t[:pinned_at] = t[:created_at] if topic["sticky"].to_i == 1 t end end end def import_posts puts "", "importing posts..." # make sure `firstpostid` is indexed mysql_query("CREATE INDEX firstpostid_index ON thread (firstpostid)") post_count = mysql_query("SELECT COUNT(postid) count FROM post WHERE postid NOT IN (SELECT firstpostid FROM thread)").first["count"] batches(BATCH_SIZE) do |offset| posts = mysql_query <<-SQL SELECT postid, userid, threadid, pagetext raw, dateline, visible, parentid FROM post WHERE postid NOT IN (SELECT firstpostid FROM thread) ORDER BY postid LIMIT #{BATCH_SIZE} OFFSET #{offset} SQL break if posts.size < 1 create_posts(posts, total: post_count, offset: offset) do |post| raw = preprocess_post_raw(post["raw"]) rescue nil next if raw.blank? next unless topic = topic_lookup_from_imported_post_id("thread-#{post["threadid"]}") p = { id: post["postid"], user_id: user_id_from_imported_user_id(post["userid"]) || Discourse::SYSTEM_USER_ID, topic_id: topic[:topic_id], raw: raw, created_at: parse_timestamp(post["dateline"]), hidden: post["visible"].to_i == 0, } if parent = topic_lookup_from_imported_post_id(post["parentid"]) p[:reply_to_post_number] = parent[:post_number] end p end end end def close_topics puts "", "Closing topics..." sql = <<-SQL WITH closed_topic_ids AS ( SELECT t.id AS topic_id FROM post_custom_fields pcf JOIN posts p ON p.id = pcf.post_id JOIN topics t ON t.id = p.topic_id WHERE pcf.name = 'import_id' AND pcf.value IN (?) ) UPDATE topics SET closed = true WHERE id IN (SELECT topic_id FROM closed_topic_ids) SQL Topic.exec_sql(sql, @closed_topic_ids) end def post_process_posts puts "", "Postprocessing posts..." current = 0 max = Post.count Post.find_each do |post| begin new_raw = postprocess_post_raw(post.raw) if new_raw != post.raw post.raw = new_raw post.save end rescue PrettyText::JavaScriptError nil ensure print_status(current += 1, max) end end end def preprocess_post_raw(raw) return "" if raw.blank? # decode HTML entities raw = @htmlentities.decode(raw) # fix whitespaces raw = raw.gsub(/(\\r)?\\n/, "\n") .gsub("\\t", "\t") # remove attachments raw = raw.gsub(/\[attach[^\]]*\]\d+\[\/attach\]/i, "") # [HTML]...[/HTML] raw = raw.gsub(/\[html\]/i, "\n```html\n") .gsub(/\[\/html\]/i, "\n```\n") # [PHP]...[/PHP] raw = raw.gsub(/\[php\]/i, "\n```php\n") .gsub(/\[\/php\]/i, "\n```\n") # [HIGHLIGHT="..."] raw = raw.gsub(/\[highlight="?(\w+)"?\]/i) { "\n```#{$1.downcase}\n" } # [CODE]...[/CODE] # [HIGHLIGHT]...[/HIGHLIGHT] raw = raw.gsub(/\[\/?code\]/i, "\n```\n") .gsub(/\[\/?highlight\]/i, "\n```\n") # [SAMP]...[/SAMP] raw = raw.gsub(/\[\/?samp\]/i, "`") # replace all chevrons with HTML entities # NOTE: must be done # - AFTER all the "code" processing # - BEFORE the "quote" processing raw = raw.gsub(/`([^`]+)`/im) { "`" + $1.gsub("<", "\u2603") + "`" } .gsub("<", "<") .gsub("\u2603", "<") raw = raw.gsub(/`([^`]+)`/im) { "`" + $1.gsub(">", "\u2603") + "`" } .gsub(">", ">") .gsub("\u2603", ">") # [URL=...]...[/URL] raw = raw.gsub(/\[url="?(.+?)"?\](.+)\[\/url\]/i) { "[#{$2}](#{$1})" } # [URL]...[/URL] # [MP3]...[/MP3] raw = raw.gsub(/\[\/?url\]/i, "") .gsub(/\[\/?mp3\]/i, "") # [MENTION][/MENTION] raw = raw.gsub(/\[mention\](.+?)\[\/mention\]/i) do old_username = $1 if @old_username_to_new_usernames.has_key?(old_username) old_username = @old_username_to_new_usernames[old_username] end "@#{old_username}" end # [MENTION=][/MENTION] # raw = raw.gsub(/\[mention="?(\d+)"?\](.+?)\[\/mention\]/i) do # user_id, old_username = $1, $2 # if user = @users.select { |u| u[:userid] == user_id }.first # old_username = @old_username_to_new_usernames[user[:username]] || user[:username] # end # "@#{old_username}" # end # [QUOTE]...[/QUOTE] raw = raw.gsub(/\[quote\](.+?)\[\/quote\]/im) { "\n> #{$1}\n" } # [QUOTE=]...[/QUOTE] raw = raw.gsub(/\[quote=([^;\]]+)\](.+?)\[\/quote\]/im) do old_username, quote = $1, $2 if @old_username_to_new_usernames.has_key?(old_username) old_username = @old_username_to_new_usernames[old_username] end "\n[quote=\"#{old_username}\"]\n#{quote}\n[/quote]\n" end # [YOUTUBE][/YOUTUBE] raw = raw.gsub(/\[youtube\](.+?)\[\/youtube\]/i) { "\n//youtu.be/#{$1}\n" } # [VIDEO=youtube;]...[/VIDEO] raw = raw.gsub(/\[video=youtube;([^\]]+)\].*?\[\/video\]/i) { "\n//youtu.be/#{$1}\n" } raw end def postprocess_post_raw(raw) # [QUOTE=;]...[/QUOTE] raw = raw.gsub(/\[quote=([^;]+);(\d+)\](.+?)\[\/quote\]/im) do old_username, post_id, quote = $1, $2, $3 if @old_username_to_new_usernames.has_key?(old_username) old_username = @old_username_to_new_usernames[old_username] end if topic_lookup = topic_lookup_from_imported_post_id(post_id) post_number = topic_lookup[:post_number] topic_id = topic_lookup[:topic_id] "\n[quote=\"#{old_username},post:#{post_number},topic:#{topic_id}\"]\n#{quote}\n[/quote]\n" else "\n[quote=\"#{old_username}\"]\n#{quote}\n[/quote]\n" end end # [THREAD][/THREAD] # ==> http://my.discourse.org/t/slug/ raw = raw.gsub(/\[thread\](\d+)\[\/thread\]/i) do thread_id = $1 if topic_lookup = topic_lookup_from_imported_post_id("thread-#{thread_id}") topic_lookup[:url] else $& end end # [THREAD=]...[/THREAD] # ==> [...](http://my.discourse.org/t/slug/) raw = raw.gsub(/\[thread=(\d+)\](.+?)\[\/thread\]/i) do thread_id, link = $1, $2 if topic_lookup = topic_lookup_from_imported_post_id("thread-#{thread_id}") url = topic_lookup[:url] "[#{link}](#{url})" else $& end end # [POST][/POST] # ==> http://my.discourse.org/t/slug// raw = raw.gsub(/\[post\](\d+)\[\/post\]/i) do post_id = $1 if topic_lookup = topic_lookup_from_imported_post_id(post_id) topic_lookup[:url] else $& end end # [POST=]...[/POST] # ==> [...](http://my.discourse.org/t///) raw = raw.gsub(/\[post=(\d+)\](.+?)\[\/post\]/i) do post_id, link = $1, $2 if topic_lookup = topic_lookup_from_imported_post_id(post_id) url = topic_lookup[:url] "[#{link}](#{url})" else $& end end raw end def parse_timestamp(timestamp) Time.zone.at(@tz.utc_to_local(timestamp)) end def fake_email SecureRandom.hex << "@domain.com" end def mysql_query(sql) @client.query(sql, cache_rows: false) end end ImportScripts::VBulletin.new.perform