463 lines
16 KiB
Ruby
463 lines
16 KiB
Ruby
require_dependency 'rate_limiter'
|
|
require_dependency 'system_message'
|
|
|
|
class PostAction < ActiveRecord::Base
|
|
class AlreadyActed < StandardError; end
|
|
|
|
include RateLimiter::OnCreateRecord
|
|
include Trashable
|
|
|
|
belongs_to :post
|
|
belongs_to :user
|
|
belongs_to :post_action_type
|
|
belongs_to :related_post, class_name: 'Post'
|
|
belongs_to :target_user, class_name: 'User'
|
|
|
|
rate_limit :post_action_rate_limiter
|
|
|
|
scope :spam_flags, -> { where(post_action_type_id: PostActionType.types[:spam]) }
|
|
scope :flags, -> { where(post_action_type_id: PostActionType.notify_flag_type_ids) }
|
|
scope :publics, -> { where(post_action_type_id: PostActionType.public_type_ids) }
|
|
scope :active, -> { where(disagreed_at: nil, deferred_at: nil, agreed_at: nil, deleted_at: nil) }
|
|
|
|
after_save :update_counters
|
|
after_save :enforce_rules
|
|
after_commit :notify_subscribers
|
|
|
|
def disposed_by_id
|
|
disagreed_by_id || agreed_by_id || deferred_by_id
|
|
end
|
|
|
|
def disposed_at
|
|
disagreed_at || agreed_at || deferred_at
|
|
end
|
|
|
|
def disposition
|
|
return :disagreed if disagreed_at
|
|
return :agreed if agreed_at
|
|
return :deferred if deferred_at
|
|
nil
|
|
end
|
|
|
|
def self.update_flagged_posts_count
|
|
posts_flagged_count = PostAction.active
|
|
.flags
|
|
.joins(post: :topic)
|
|
.where('posts.deleted_at' => nil)
|
|
.where('topics.deleted_at' => nil)
|
|
.count('DISTINCT posts.id')
|
|
|
|
$redis.set('posts_flagged_count', posts_flagged_count)
|
|
user_ids = User.staff.pluck(:id)
|
|
MessageBus.publish('/flagged_counts', { total: posts_flagged_count }, { user_ids: user_ids })
|
|
end
|
|
|
|
def self.flagged_posts_count
|
|
$redis.get('posts_flagged_count').to_i
|
|
end
|
|
|
|
def self.counts_for(collection, user)
|
|
return {} if collection.blank?
|
|
|
|
collection_ids = collection.map(&:id)
|
|
user_id = user.try(:id) || 0
|
|
|
|
post_actions = PostAction.where(post_id: collection_ids, user_id: user_id)
|
|
|
|
user_actions = {}
|
|
post_actions.each do |post_action|
|
|
user_actions[post_action.post_id] ||= {}
|
|
user_actions[post_action.post_id][post_action.post_action_type_id] = post_action
|
|
end
|
|
|
|
user_actions
|
|
end
|
|
|
|
def self.active_flags_counts_for(collection)
|
|
return {} if collection.blank?
|
|
|
|
collection_ids = collection.map(&:id)
|
|
|
|
post_actions = PostAction.active.flags.where(post_id: collection_ids)
|
|
|
|
user_actions = {}
|
|
post_actions.each do |post_action|
|
|
user_actions[post_action.post_id] ||= {}
|
|
user_actions[post_action.post_id][post_action.post_action_type_id] ||= []
|
|
user_actions[post_action.post_id][post_action.post_action_type_id] << post_action
|
|
end
|
|
|
|
user_actions
|
|
end
|
|
|
|
def self.count_per_day_for_type(post_action_type, since_days_ago=30)
|
|
unscoped.where(post_action_type_id: post_action_type)
|
|
.where('created_at > ?', since_days_ago.days.ago)
|
|
.group('date(created_at)')
|
|
.order('date(created_at)')
|
|
.count
|
|
end
|
|
|
|
def self.agree_flags!(post, moderator, delete_post=false)
|
|
actions = PostAction.active
|
|
.where(post_id: post.id)
|
|
.where(post_action_type_id: PostActionType.flag_types.values)
|
|
|
|
actions.each do |action|
|
|
action.agreed_at = Time.zone.now
|
|
action.agreed_by_id = moderator.id
|
|
# so callback is called
|
|
action.save
|
|
action.add_moderator_post_if_needed(moderator, :agreed, delete_post)
|
|
end
|
|
|
|
update_flagged_posts_count
|
|
end
|
|
|
|
def self.clear_flags!(post, moderator)
|
|
# -1 is the automatic system cleary
|
|
action_type_ids = moderator.id == -1 ?
|
|
PostActionType.auto_action_flag_types.values :
|
|
PostActionType.flag_types.values
|
|
|
|
actions = PostAction.where(post_id: post.id)
|
|
.where(post_action_type_id: action_type_ids)
|
|
|
|
actions.each do |action|
|
|
action.disagreed_at = Time.zone.now
|
|
action.disagreed_by_id = moderator.id
|
|
# so callback is called
|
|
action.save
|
|
action.add_moderator_post_if_needed(moderator, :disagreed)
|
|
end
|
|
|
|
# reset all cached counters
|
|
f = action_type_ids.map { |t| ["#{PostActionType.types[t]}_count", 0] }
|
|
Post.with_deleted.where(id: post.id).update_all(Hash[*f.flatten])
|
|
|
|
update_flagged_posts_count
|
|
end
|
|
|
|
def self.defer_flags!(post, moderator, delete_post=false)
|
|
actions = PostAction.active
|
|
.where(post_id: post.id)
|
|
.where(post_action_type_id: PostActionType.flag_types.values)
|
|
|
|
actions.each do |action|
|
|
action.deferred_at = Time.zone.now
|
|
action.deferred_by_id = moderator.id
|
|
# so callback is called
|
|
action.save
|
|
action.add_moderator_post_if_needed(moderator, :deferred, delete_post)
|
|
end
|
|
|
|
update_flagged_posts_count
|
|
end
|
|
|
|
def add_moderator_post_if_needed(moderator, disposition, delete_post=false)
|
|
return unless related_post
|
|
return if related_post.topic.posts.where(post_type: Post.types[:moderator_action]).exists?
|
|
message_key = "flags_dispositions.#{disposition}"
|
|
message_key << "_and_deleted" if delete_post
|
|
related_post.topic.add_moderator_post(moderator, I18n.t(message_key))
|
|
end
|
|
|
|
def self.create_message_for_post_action(user, post, post_action_type_id, opts)
|
|
post_action_type = PostActionType.types[post_action_type_id]
|
|
|
|
return unless opts[:message] && [:notify_moderators, :notify_user].include?(post_action_type)
|
|
|
|
title = I18n.t("post_action_types.#{post_action_type}.email_title", title: post.topic.title)
|
|
body = I18n.t("post_action_types.#{post_action_type}.email_body", message: opts[:message], link: "#{Discourse.base_url}#{post.url}")
|
|
|
|
opts = {
|
|
archetype: Archetype.private_message,
|
|
title: title,
|
|
raw: body
|
|
}
|
|
|
|
if post_action_type == :notify_moderators
|
|
opts[:subtype] = TopicSubtype.notify_moderators
|
|
opts[:target_group_names] = "moderators"
|
|
else
|
|
opts[:subtype] = TopicSubtype.notify_user
|
|
opts[:target_usernames] = if post_action_type == :notify_user
|
|
post.user.username
|
|
elsif post_action_type != :notify_moderators
|
|
# this is a hack to allow a PM with no reciepients, we should think through
|
|
# a cleaner technique, a PM with myself is valid for flagging
|
|
'x'
|
|
end
|
|
end
|
|
|
|
PostCreator.new(user, opts).create.id
|
|
end
|
|
|
|
def self.act(user, post, post_action_type_id, opts={})
|
|
related_post_id = create_message_for_post_action(user, post, post_action_type_id, opts)
|
|
staff_took_action = opts[:take_action] || false
|
|
|
|
targets_topic = if opts[:flag_topic] && post.topic
|
|
post.topic.reload
|
|
post.topic.posts_count != 1
|
|
end
|
|
|
|
where_attrs = {
|
|
post_id: post.id,
|
|
user_id: user.id,
|
|
post_action_type_id: post_action_type_id
|
|
}
|
|
|
|
action_attributes = {
|
|
staff_took_action: staff_took_action,
|
|
related_post_id: related_post_id,
|
|
targets_topic: !!targets_topic
|
|
}
|
|
|
|
# First try to revive a trashed record
|
|
row_count = PostAction.where(where_attrs)
|
|
.with_deleted
|
|
.where("deleted_at IS NOT NULL")
|
|
.update_all(action_attributes.merge(deleted_at: nil))
|
|
|
|
if row_count == 0
|
|
post_action = create(where_attrs.merge(action_attributes))
|
|
if post_action && post_action.errors.count == 0
|
|
BadgeGranter.queue_badge_grant(Badge::Trigger::PostAction, post_action: post_action)
|
|
end
|
|
else
|
|
post_action = PostAction.where(where_attrs).first
|
|
end
|
|
|
|
# agree with other flags
|
|
PostAction.agree_flags!(post, user) if staff_took_action
|
|
# update counters
|
|
post_action.try(:update_counters)
|
|
|
|
post_action
|
|
rescue ActiveRecord::RecordNotUnique
|
|
# can happen despite being .create
|
|
# since already bookmarked
|
|
true
|
|
end
|
|
|
|
def self.remove_act(user, post, post_action_type_id)
|
|
finder = PostAction.where(post_id: post.id, user_id: user.id, post_action_type_id: post_action_type_id)
|
|
finder = finder.with_deleted if user.try(:staff?)
|
|
if action = finder.first
|
|
action.remove_act!(user)
|
|
end
|
|
end
|
|
|
|
def remove_act!(user)
|
|
trash!(user)
|
|
# NOTE: save is called to ensure all callbacks are called
|
|
# trash will not trigger callbacks, and triggering after_commit
|
|
# is not trivial
|
|
save
|
|
end
|
|
|
|
def is_bookmark?
|
|
post_action_type_id == PostActionType.types[:bookmark]
|
|
end
|
|
|
|
def is_like?
|
|
post_action_type_id == PostActionType.types[:like]
|
|
end
|
|
|
|
def is_flag?
|
|
PostActionType.flag_types.values.include?(post_action_type_id)
|
|
end
|
|
|
|
def is_private_message?
|
|
post_action_type_id == PostActionType.types[:notify_user] ||
|
|
post_action_type_id == PostActionType.types[:notify_moderators]
|
|
end
|
|
|
|
# A custom rate limiter for this model
|
|
def post_action_rate_limiter
|
|
return unless is_flag? || is_bookmark? || is_like?
|
|
|
|
return @rate_limiter if @rate_limiter.present?
|
|
|
|
%w(like flag bookmark).each do |type|
|
|
if send("is_#{type}?")
|
|
@rate_limiter = RateLimiter.new(user, "create_#{type}:#{Date.today.to_s}", SiteSetting.send("max_#{type}s_per_day"), 1.day.to_i)
|
|
return @rate_limiter
|
|
end
|
|
end
|
|
end
|
|
|
|
before_create do
|
|
post_action_type_ids = is_flag? ? PostActionType.flag_types.values : post_action_type_id
|
|
raise AlreadyActed if PostAction.where(user_id: user_id)
|
|
.where(post_id: post_id)
|
|
.where(post_action_type_id: post_action_type_ids)
|
|
.where(deleted_at: nil)
|
|
.where(disagreed_at: nil)
|
|
.where(targets_topic: targets_topic)
|
|
.exists?
|
|
end
|
|
|
|
# Returns the flag counts for a post, taking into account that some users
|
|
# can weigh flags differently.
|
|
def self.flag_counts_for(post_id)
|
|
flag_counts = exec_sql("SELECT SUM(CASE
|
|
WHEN pa.disagreed_at IS NULL AND pa.staff_took_action THEN :flags_required_to_hide_post
|
|
WHEN pa.disagreed_at IS NULL AND NOT pa.staff_took_action THEN 1
|
|
ELSE 0
|
|
END) AS new_flags,
|
|
SUM(CASE
|
|
WHEN pa.disagreed_at IS NOT NULL AND pa.staff_took_action THEN :flags_required_to_hide_post
|
|
WHEN pa.disagreed_at IS NOT NULL AND NOT pa.staff_took_action THEN 1
|
|
ELSE 0
|
|
END) AS old_flags
|
|
FROM post_actions AS pa
|
|
INNER JOIN users AS u ON u.id = pa.user_id
|
|
WHERE pa.post_id = :post_id
|
|
AND pa.post_action_type_id IN (:post_action_types)
|
|
AND pa.deleted_at IS NULL",
|
|
post_id: post_id,
|
|
post_action_types: PostActionType.auto_action_flag_types.values,
|
|
flags_required_to_hide_post: SiteSetting.flags_required_to_hide_post).first
|
|
|
|
[flag_counts['old_flags'].to_i, flag_counts['new_flags'].to_i]
|
|
end
|
|
|
|
def post_action_type_key
|
|
PostActionType.types[post_action_type_id]
|
|
end
|
|
|
|
def update_counters
|
|
# Update denormalized counts
|
|
column = "#{post_action_type_key.to_s}_count"
|
|
count = PostAction.where(post_id: post_id)
|
|
.where(post_action_type_id: post_action_type_id)
|
|
.count
|
|
|
|
# We probably want to refactor this method to something cleaner.
|
|
case post_action_type_key
|
|
when :vote
|
|
# Voting also changes the sort_order
|
|
Post.where(id: post_id).update_all ["vote_count = :count, sort_order = :max - :count", count: count, max: Topic.max_sort_order]
|
|
when :like
|
|
# `like_score` is weighted higher for staff accounts
|
|
score = PostAction.joins(:user)
|
|
.where(post_id: post_id)
|
|
.sum("CASE WHEN users.moderator OR users.admin THEN #{SiteSetting.staff_like_weight} ELSE 1 END")
|
|
Post.where(id: post_id).update_all ["like_count = :count, like_score = :score", count: count, score: score]
|
|
else
|
|
Post.where(id: post_id).update_all ["#{column} = ?", count]
|
|
end
|
|
|
|
topic_id = Post.with_deleted.where(id: post_id).pluck(:topic_id).first
|
|
topic_count = Post.where(topic_id: topic_id).sum(column)
|
|
Topic.where(id: topic_id).update_all ["#{column} = ?", topic_count]
|
|
|
|
if PostActionType.notify_flag_type_ids.include?(post_action_type_id)
|
|
PostAction.update_flagged_posts_count
|
|
end
|
|
|
|
end
|
|
|
|
def enforce_rules
|
|
post = Post.with_deleted.where(id: post_id).first
|
|
PostAction.auto_hide_if_needed(post, post_action_type_key)
|
|
SpamRulesEnforcer.enforce!(post.user) if post_action_type_key == :spam
|
|
end
|
|
|
|
def notify_subscribers
|
|
if (is_like? || is_flag?) && post
|
|
MessageBus.publish("/topic/#{post.topic_id}",{
|
|
id: post.id,
|
|
post_number: post.post_number,
|
|
type: "acted"
|
|
},
|
|
group_ids: post.topic.secure_group_ids
|
|
)
|
|
end
|
|
end
|
|
|
|
def self.auto_hide_if_needed(post, post_action_type)
|
|
return if post.hidden
|
|
|
|
if PostActionType.auto_action_flag_types.include?(post_action_type) &&
|
|
SiteSetting.flags_required_to_hide_post > 0
|
|
|
|
old_flags, new_flags = PostAction.flag_counts_for(post.id)
|
|
|
|
if new_flags >= SiteSetting.flags_required_to_hide_post
|
|
hide_post!(post, post_action_type, guess_hide_reason(old_flags))
|
|
end
|
|
end
|
|
end
|
|
|
|
def self.hide_post!(post, post_action_type, reason=nil)
|
|
return if post.hidden
|
|
|
|
unless reason
|
|
old_flags,_ = PostAction.flag_counts_for(post.id)
|
|
reason = guess_hide_reason(old_flags)
|
|
end
|
|
|
|
Post.where(id: post.id).update_all(["hidden = true, hidden_at = CURRENT_TIMESTAMP, hidden_reason_id = COALESCE(hidden_reason_id, ?)", reason])
|
|
Topic.where(["id = :topic_id AND NOT EXISTS(SELECT 1 FROM POSTS WHERE topic_id = :topic_id AND NOT hidden)", topic_id: post.topic_id]).update_all(visible: false)
|
|
|
|
# inform user
|
|
if post.user
|
|
options = {
|
|
url: post.url,
|
|
edit_delay: SiteSetting.cooldown_minutes_after_hiding_posts,
|
|
flag_reason: I18n.t("flag_reasons.#{post_action_type}"),
|
|
}
|
|
SystemMessage.create(post.user, :post_hidden, options)
|
|
end
|
|
end
|
|
|
|
def self.guess_hide_reason(old_flags)
|
|
old_flags > 0 ?
|
|
Post.hidden_reasons[:flag_threshold_reached_again] :
|
|
Post.hidden_reasons[:flag_threshold_reached]
|
|
end
|
|
|
|
def self.post_action_type_for_post(post_id)
|
|
post_action = PostAction.find_by(deferred_at: nil, post_id: post_id, post_action_type_id: PostActionType.flag_types.values, deleted_at: nil)
|
|
PostActionType.types[post_action.post_action_type_id]
|
|
end
|
|
|
|
protected
|
|
|
|
def self.target_moderators
|
|
Group[:moderators].name
|
|
end
|
|
|
|
end
|
|
|
|
# == Schema Information
|
|
#
|
|
# Table name: post_actions
|
|
#
|
|
# id :integer not null, primary key
|
|
# post_id :integer not null
|
|
# user_id :integer not null
|
|
# post_action_type_id :integer not null
|
|
# deleted_at :datetime
|
|
# created_at :datetime
|
|
# updated_at :datetime
|
|
# deleted_by_id :integer
|
|
# related_post_id :integer
|
|
# staff_took_action :boolean default(FALSE), not null
|
|
# deferred_by_id :integer
|
|
# targets_topic :boolean default(FALSE)
|
|
# agreed_at :datetime
|
|
# agreed_by_id :integer
|
|
# deferred_at :datetime
|
|
# disagreed_at :datetime
|
|
# disagreed_by_id :integer
|
|
#
|
|
# Indexes
|
|
#
|
|
# idx_unique_actions (user_id,post_action_type_id,post_id,deleted_at,targets_topic) UNIQUE
|
|
# index_post_actions_on_post_id (post_id)
|
|
#
|