require "csv"
class Vanilla < Thor
desc "import", "Imports posts from a Vanilla export"
method_option :file, aliases: '-f', required: true, desc: "The vanilla file to import"
def import
unless File.exist?(options[:file])
puts "File '#{options[:file]}' not found"
exit 1
end
load_rails
file = read_file(options[:file])
parse_file(file)
disable_rate_limiter
create_users
create_user_memberships
create_categories
create_topics
create_posts
update_topic_statuses
create_private_topics
create_private_posts
ensure
enable_rate_limiter
end
no_commands do
def load_rails
puts "loading rails..."
require "./config/environment"
end
def disable_rate_limiter
puts "disabling rate limiter..."
RateLimiter.disable
end
def read_file(file)
puts "reading file..."
string = File.read(file).gsub("\\N", "").gsub(/\\$\n/m, "\\n").gsub("\\,", ",").gsub(/(?<!\\)\\"/, '""').gsub(/\\\\\\"/, '\\""')
StringIO.new(string)
end
def parse_file(file)
# TODO: parse header & validate version number
header = file.readline
until file.eof?
line = file.readline
next if line.blank?
next if line.start_with?("//")
if m = /^Table: (\w+)/.match(line)
# extract table name
table = m[1]
# read the data until an empty line
data = []
# first line is the table definition, turn that into a proper csv header
data << file.readline.split(",").map { |c| c.split(":")[0].underscore }.join(",")
until (line = file.readline).blank?
data << line.strip
end
# parse the data
puts "parsing #{table.underscore.pluralize}..."
parsed_data = CSV.parse(data.join("\n"), headers: true, header_converters: :symbol).map { |row| row.to_hash }
instance_variable_set("@#{table.underscore.pluralize}".to_sym, parsed_data)
end
end
end
def create_users
puts "creating users..."
users_created = 0
@users.each do |user|
begin
next if user[:name] == "[Deleted User]"
user[:new_id] = User.create!(
name: user[:name],
email: user[:email],
username: UserNameSuggester.suggest(user[:name]),
created_at: DateTime.strptime(user[:date_inserted], "%Y-%m-%d %H:%M:%S"),
trust_level: TrustLevel.levels[:basic],
bio_raw: (user[:discovery_text] || "").gsub("\\n", "\n")
).id
users_created += 1
rescue ActiveRecord::RecordInvalid
# email has already been taken...
end
end
puts "created #{users_created} users!"
end
def create_user_memberships
puts "creating user memberships..."
add_administrators
add_moderators
end
def add_administrators
puts "granting admin rights..."
admin_role_id = @roles.select { |r| r[:name] == "Administrator" }.first[:role_id]
admin_emails = @user_roles.select { |ur| ur[:role_id] == admin_role_id }.map { |ur| @users.select { |u| u[:user_id] == ur[:user_id] }.first[:email] }
admin_emails.each { |admin_email| User.where(email: admin_email).first.grant_admin! }
puts "#{admin_emails.size} admins!"
end
def add_moderators
puts "granting moderation rights..."
moderator_role_id = @roles.select { |r| r[:name] == "Moderator" }.first[:role_id]
moderator_emails = @user_roles.select { |ur| ur[:role_id] == moderator_role_id }.map { |ur| @users.select { |u| u[:user_id] == ur[:user_id] }.first[:email] }
moderator_emails.each { |admin_email| User.where(email: admin_email).first.grant_moderation! }
puts "#{moderator_emails.size} moderators!"
end
def create_categories
puts "creating categories..."
categories_created = 0
level_1_category_ids = Set.new
# save some information about the root category
@root_category = @categories.select { |c| c[:category_id] == "-1" }.first
@root_category_created_at = DateTime.strptime(@root_category[:date_inserted], "%Y-%m-%d %H:%M:%S")
# removes root category
@categories.reject! { |c| c[:category_id] == "-1" }
# adds root's child categories
@categories.select { |c| c[:parent_category_id] == "-1" }.each do |category|
level_1_category_ids << category[:category_id].to_i
category[:new_id] = create_category(category)
categories_created += 1
end
# adds other categories
@categories.select { |c| level_1_category_ids.include? c[:parent_category_id].to_i }.each do |category|
new_parent_category_id = @categories.select { |c| c[:category_id] == category[:parent_category_id] }.first[:new_id]
category[:new_id] = create_category(category, new_parent_category_id)
categories_created += 1
end
puts "created #{categories_created} categories!"
end
def create_category(category, new_parent_category_id=nil)
new_category = Category.create!(
name: category[:name],
color: "AB9364",
text_color: "FFF",
position: category[:sort].to_i,
user: get_user_by_previous_id(category[:insert_user_id]) || Discourse.system_user,
created_at: parse_category_date(category[:date_inserted]),
description: category[:description].gsub("\\n", "\n"),
parent_category_id: new_parent_category_id
)
# return the new category id
new_category.id
end
def parse_category_date(date)
date == "0000-00-00 00:00:00" ? @root_category_created_at : DateTime.strptime(date, "%Y-%m-%d %H:%M:%S")
end
def create_topics
puts "creating topics..."
topics_created = 0
@discussions.each do |discussion|
user = get_user_by_previous_id(discussion[:insert_user_id]) || Discourse.system_user
discussion[:created_at] = DateTime.strptime(discussion[:date_inserted], "%Y-%m-%d %H:%M:%S")
options = {
title: discussion[:name],
raw: discussion[:body].gsub("\\n", "\n"),
created_at: discussion[:created_at],
skip_validations: true
}
options[:category] = get_category_by_previous_id(discussion[:category_id]).try(:name) if discussion[:category_id]
post = PostCreator.new(user, options).create
discussion[:new_id] = post.topic.id
topics_created += 1
end
puts "created #{topics_created} topics!"
end
def create_posts
puts "creating posts..."
posts_created = 0
@comments.each do |comment|
discussion = @discussions.select { |d| d[:discussion_id] == comment[:discussion_id] }.first
unless discussion && discussion[:new_id]
puts "could not find discussion ##{comment[:discussion_id]}"
next
end
topic_id = discussion[:new_id]
user = get_user_by_previous_id(comment[:insert_user_id]) || Discourse.system_user
options = {
topic_id: topic_id,
raw: comment[:body].gsub("\\n", "\n"),
created_at: DateTime.strptime(comment[:date_inserted], "%Y-%m-%d %H:%M:%S"),
skip_validations: true
}
post = PostCreator.new(user, options).create
comment[:new_id] = post.id
posts_created += 1
end
puts "created #{posts_created} posts!"
end
def update_topic_statuses
puts "updating topic statuses..."
@discussions.each do |discussion|
next unless topic_id = discussion[:new_id]
# HACK to make sure bumped_at is properly set
sql = <<-SQL
UPDATE topics
SET views = :views,
closed = :closed,
pinned_at = :pinned_at,
bumped_at = (SELECT created_at FROM posts WHERE topic_id = :topic_id ORDER BY created_at DESC LIMIT 1)
WHERE id = :topic_id
SQL
Topic.exec_sql(sql,
views: discussion[:count_views].to_i,
closed: discussion[:closed] == "1",
pinned_at: discussion[:announce] == "1" ? discussion[:created_at] : nil,
topic_id: topic_id
)
end
end
def create_private_topics
puts "creating private topics..."
private_topics_created = 0
@conversations.each do |conversation|
# select the first conversation message
message = @conversation_messages.select { |cm| cm[:message_id] == conversation[:first_message_id] }.first
# list all other user ids in the conversation
user_ids_in_conversation = @user_conversations.select { |uc| uc[:conversation_id] == conversation[:conversation_id] && uc[:user_id] != conversation[:insert_user_id] }.map { |uc| uc[:user_id] }
# retrieve their emails
user_emails_in_conversation = @users.select { |u| user_ids_in_conversation.include?(u[:user_id]) }.map { |u| u[:email] }
# retrieve their usernames from the database
target_usernames = User.where("email in (?)", user_emails_in_conversation).pluck(:username).to_a
next if target_usernames.empty?
user = get_user_by_previous_id(conversation[:insert_user_id]) || Discourse.system_user
options = {
archetype: Archetype::private_message,
title: "Private message from #{user.username}",
raw: message[:body].gsub("\\n", "\n"),
target_usernames: target_usernames.join(","),
created_at: DateTime.strptime(conversation[:date_inserted], "%Y-%m-%d %H:%M:%S"),
skip_validations: true
}
post = PostCreator.new(user, options).create
conversation[:new_id] = post.topic.id
private_topics_created += 1
end
puts "created #{private_topics_created} private topics!"
end
def create_private_posts
puts "creating private posts..."
private_posts_created = 0
@conversation_messages.each do |message|
conversation = @conversations.select { |c| c[:conversation_id] == message[:conversation_id] }.first
next if conversation[:first_message_id] == message[:message_id]
next unless topic_id = conversation[:new_id]
user = get_user_by_previous_id(message[:insert_user_id]) || Discourse.system_user
options = {
topic_id: topic_id,
raw: message[:body].gsub("\\n", "\n"),
created_at: DateTime.strptime(message[:date_inserted], "%Y-%m-%d %H:%M:%S"),
skip_validations: true
}
post = PostCreator.new(user, options).create
next unless post && post.errors.empty?
message[:new_id] = post.id
private_posts_created += 1
end
puts "created #{private_posts_created} private posts!"
end
def get_user_by_previous_id(previous_id)
user = @users.select { |u| u[:user_id] == previous_id }.first
User.find(user[:new_id]) if user && user[:new_id]
end
def get_category_by_previous_id(previous_id)
category = @categories.select { |c| c[:category_id] == previous_id }.first
Category.find(category[:new_id]) if category && category[:new_id]
end
def enable_rate_limiter
puts "enabling rate limiter..."
RateLimiter.enable
end
end
end