discourse/script/import_scripts/disqus.rb

228 lines
5.6 KiB
Ruby

# frozen_string_literal: true
require 'nokogiri'
require 'optparse'
require File.expand_path(File.dirname(__FILE__) + "/base")
class ImportScripts::Disqus < ImportScripts::Base
# CHANGE THESE BEFORE RUNNING THE IMPORTER
IMPORT_FILE = File.expand_path("~/import/site/export.xml")
IMPORT_CATEGORY = "Front page"
def initialize
abort("File '#{IMPORT_FILE}' not found") if !File.exist?(IMPORT_FILE)
@category = Category.where(name: IMPORT_CATEGORY).first
abort("Category #{IMPORT_CATEGORY} not found") if @category.blank?
@parser = DisqusSAX.new
doc = Nokogiri::XML::SAX::Parser.new(@parser)
doc.parse_file(IMPORT_FILE)
@parser.normalize
super
end
def execute
import_users
import_topics_and_posts
end
def import_users
puts "", "importing users..."
by_email = {}
@parser.posts.each do |id, p|
next if p[:is_spam] == 'true' || p[:is_deleted] == 'true'
by_email[p[:author_email]] = { name: p[:author_name], username: p[:author_username] }
end
@parser.threads.each do |id, t|
by_email[t[:author_email]] = { name: t[:author_name], username: t[:author_username] }
end
create_users(by_email.keys) do |email|
user = by_email[email]
{
id: email,
email: email,
username: user[:username],
name: user[:name],
merge: true
}
end
end
def import_topics_and_posts
puts "", "importing topics..."
@parser.threads.each do |id, t|
title = t[:title]
title.gsub!(/&#8220;/, '"')
title.gsub!(/&#8221;/, '"')
title.gsub!(/&#8217;/, "'")
title.gsub!(/&#8212;/, "--")
title.gsub!(/&#8211;/, "-")
puts "Creating #{title}... (#{t[:posts].size} posts)"
topic_user = find_existing_user(t[:author_email], t[:author_username])
begin
post = TopicEmbed.import_remote(topic_user, t[:link], title: title)
post.topic.update_column(:category_id, @category.id)
rescue OpenURI::HTTPError
post = nil
end
if post.present? && post.topic.posts_count <= 1
(t[:posts] || []).each do |p|
post_user = find_existing_user(p[:author_email] || '', p[:author_username])
next unless post_user.present?
attrs = {
user_id: post_user.id,
topic_id: post.topic_id,
raw: p[:cooked],
cooked: p[:cooked],
created_at: Date.parse(p[:created_at])
}
if p[:parent_id]
parent = @parser.posts[p[:parent_id]]
if parent && parent[:discourse_number]
attrs[:reply_to_post_number] = parent[:discourse_number]
end
end
post = create_post(attrs, p[:id])
p[:discourse_number] = post.post_number
end
end
end
end
private
def get_post_as_user(username)
user = User.find_by_username_lower(username.downcase)
abort("No user found named: '#{username}'") if user.nil?
user
end
end
class DisqusSAX < Nokogiri::XML::SAX::Document
attr_accessor :posts, :threads, :users
def initialize
@inside = {}
@posts = {}
@threads = {}
@users = {}
end
def start_element(name, attrs = [])
hashed = Hash[attrs]
case name
when 'post'
@post = {}
@post[:id] = hashed['dsq:id'] if @post
when 'thread'
id = hashed['dsq:id']
if @post
thread = @threads[id]
thread[:posts] << @post
else
@thread = { id: id, posts: [] }
end
when 'parent'
if @post
id = hashed['dsq:id']
@post[:parent_id] = id
end
end
@inside[name] = true
end
def end_element(name)
case name
when 'post'
@posts[@post[:id]] = @post
@post = nil
when 'thread'
if @post.nil?
@threads[@thread[:id]] = @thread
@thread = nil
end
end
@inside[name] = false
end
def characters(str)
record(@post, :author_email, str, 'author', 'email')
record(@post, :author_name, str, 'author', 'name')
record(@post, :author_username, str, 'author', 'username')
record(@post, :author_anonymous, str, 'author', 'isAnonymous')
record(@post, :created_at, str, 'createdAt')
record(@post, :is_deleted, str, 'isDeleted')
record(@post, :is_spam, str, 'isSpam')
record(@thread, :link, str, 'link')
record(@thread, :title, str, 'title')
record(@thread, :created_at, str, 'createdAt')
record(@thread, :author_email, str, 'author', 'email')
record(@thread, :author_name, str, 'author', 'name')
record(@thread, :author_username, str, 'author', 'username')
record(@thread, :author_anonymous, str, 'author', 'isAnonymous')
end
def cdata_block(str)
record(@post, :cooked, str, 'message')
end
def record(target, sym, str, *params)
return if target.nil?
if inside?(*params)
target[sym] ||= ""
target[sym] << str
end
end
def inside?(*params)
return !params.find { |p| !@inside[p] }
end
def normalize
@threads.each do |id, t|
if t[:posts].size == 0
# Remove any threads that have no posts
@threads.delete(id)
else
t[:posts].delete_if { |p| p[:is_spam] == 'true' || p[:is_deleted] == 'true' }
end
end
# Merge any threads that have the same title
existing_title = {}
@threads.each do |id, t|
existing = existing_title[t[:title]]
if existing.nil?
existing_title[t[:title]] = t
else
existing[:posts] << t[:posts]
existing[:posts].flatten!
@threads.delete(t[:id])
end
end
end
end
ImportScripts::Disqus.new.perform