296 lines
9.5 KiB
Ruby
296 lines
9.5 KiB
Ruby
# frozen_string_literal: true
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class CategoryUser < ActiveRecord::Base
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belongs_to :category
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belongs_to :user
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def self.lookup(user, level)
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self.where(user: user, notification_level: notification_levels[level])
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end
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def self.notification_levels
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NotificationLevels.all
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end
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def self.watching_levels
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[notification_levels[:watching], notification_levels[:watching_first_post]]
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end
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def self.batch_set(user, level, category_ids)
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level_num = notification_levels[level]
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category_ids = Category.where(id: category_ids).pluck(:id)
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changed = false
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# Update pre-existing category users
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if category_ids.present? &&
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CategoryUser
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.where(user_id: user.id, category_id: category_ids)
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.where.not(notification_level: level_num)
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.update_all(notification_level: level_num) > 0
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changed = true
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end
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# Remove extraneous category users
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if CategoryUser
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.where(user_id: user.id, notification_level: level_num)
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.where.not(category_id: category_ids)
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.delete_all > 0
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changed = true
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end
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if category_ids.present?
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params = { user_id: user.id, level_num: level_num }
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sql = <<~SQL
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INSERT INTO category_users (user_id, category_id, notification_level)
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SELECT :user_id, :category_id, :level_num
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ON CONFLICT DO NOTHING
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SQL
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# we could use VALUES here but it would introduce a string
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# into the query, plus it is a bit of a micro optimisation
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category_ids.each do |category_id|
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params[:category_id] = category_id
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changed = true if DB.exec(sql, params) > 0
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end
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end
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if changed
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auto_watch(user_id: user.id)
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auto_track(user_id: user.id)
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end
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changed
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end
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def self.set_notification_level_for_category(user, level, category_id)
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record = CategoryUser.where(user: user, category_id: category_id).first
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return if record && record.notification_level == level
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if record.present?
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record.notification_level = level
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record.save!
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else
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begin
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CategoryUser.create!(user: user, category_id: category_id, notification_level: level)
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rescue ActiveRecord::RecordNotUnique
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# does not matter
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end
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end
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auto_watch(user_id: user.id)
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auto_track(user_id: user.id)
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end
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def self.auto_track(opts = {})
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builder = DB.build <<~SQL
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UPDATE topic_users tu
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SET notification_level = :tracking,
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notifications_reason_id = :auto_track_category
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FROM topics t, category_users cu
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/*where*/
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SQL
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builder.where(
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"tu.topic_id = t.id AND
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cu.category_id = t.category_id AND
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cu.user_id = tu.user_id AND
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cu.notification_level = :tracking AND
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tu.notification_level = :regular",
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)
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if category_id = opts[:category_id]
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builder.where("t.category_id = :category_id", category_id: category_id)
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end
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if topic_id = opts[:topic_id]
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builder.where("tu.topic_id = :topic_id", topic_id: topic_id)
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end
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if user_id = opts[:user_id]
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builder.where("tu.user_id = :user_id", user_id: user_id)
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end
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builder.exec(
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tracking: notification_levels[:tracking],
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regular: notification_levels[:regular],
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auto_track_category: TopicUser.notification_reasons[:auto_track_category],
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)
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end
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def self.auto_watch(opts = {})
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builder = DB.build <<~SQL
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UPDATE topic_users tu
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SET notification_level =
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CASE WHEN should_track THEN :tracking
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WHEN should_watch THEN :watching
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ELSE notification_level
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END,
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notifications_reason_id =
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CASE WHEN should_track THEN null
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WHEN should_watch THEN :auto_watch_category
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ELSE notifications_reason_id
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END
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FROM (
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SELECT tu1.topic_id,
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tu1.user_id,
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CASE WHEN
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cu.user_id IS NULL AND tu1.notification_level = :watching AND tu1.notifications_reason_id = :auto_watch_category THEN true
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ELSE false
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END should_track,
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CASE WHEN
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cu.user_id IS NOT NULL AND tu1.notification_level in (:regular, :tracking) THEN true
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ELSE false
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END should_watch
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FROM topic_users tu1
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JOIN topics t ON t.id = tu1.topic_id
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LEFT JOIN category_users cu ON cu.category_id = t.category_id AND cu.user_id = tu1.user_id AND cu.notification_level = :watching
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/*where2*/
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) as X
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/*where*/
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SQL
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builder.where("X.topic_id = tu.topic_id AND X.user_id = tu.user_id")
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builder.where("should_watch OR should_track")
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if category_id = opts[:category_id]
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builder.where2("t.category_id = :category_id", category_id: category_id)
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end
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if topic_id = opts[:topic_id]
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builder.where("tu.topic_id = :topic_id", topic_id: topic_id)
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builder.where2("tu1.topic_id = :topic_id", topic_id: topic_id)
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end
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if user_id = opts[:user_id]
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builder.where("tu.user_id = :user_id", user_id: user_id)
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builder.where2("tu1.user_id = :user_id", user_id: user_id)
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end
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builder.exec(
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watching: notification_levels[:watching],
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tracking: notification_levels[:tracking],
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regular: notification_levels[:regular],
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auto_watch_category: TopicUser.notification_reasons[:auto_watch_category],
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)
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end
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def self.ensure_consistency!
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DB.exec <<~SQL
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DELETE FROM category_users
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WHERE user_id IN (
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SELECT cu.user_id FROM category_users cu
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LEFT JOIN users u ON u.id = cu.user_id
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WHERE u.id IS NULL
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)
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SQL
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end
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def self.default_notification_level
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if SiteSetting.mute_all_categories_by_default
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notification_levels[:muted]
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else
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notification_levels[:regular]
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end
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end
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def self.notification_levels_for(user)
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# Anonymous users have all default categories set to regular tracking,
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# except for default muted categories which stay muted.
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if user.blank?
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notification_levels =
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[
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SiteSetting.default_categories_watching.split("|"),
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SiteSetting.default_categories_tracking.split("|"),
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SiteSetting.default_categories_watching_first_post.split("|"),
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SiteSetting.default_categories_normal.split("|"),
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].flatten.map { |id| [id.to_i, self.notification_levels[:regular]] }
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notification_levels +=
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SiteSetting
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.default_categories_muted
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.split("|")
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.map { |id| [id.to_i, self.notification_levels[:muted]] }
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else
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notification_levels = CategoryUser.where(user: user).pluck(:category_id, :notification_level)
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end
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Hash[*notification_levels.flatten]
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end
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def self.lookup_for(user, category_ids)
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return {} if user.blank? || category_ids.blank?
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create_lookup(CategoryUser.where(category_id: category_ids, user_id: user.id))
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end
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def self.create_lookup(category_users)
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category_users.each_with_object({}) do |category_user, acc|
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acc[category_user.category_id] = category_user
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end
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end
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def self.muted_category_ids_query(user, include_direct: false)
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query = Category
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query = query.where.not(parent_category_id: nil) if !include_direct
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query =
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query
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.joins("LEFT JOIN categories categories2 ON categories2.id = categories.parent_category_id")
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.joins(
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"LEFT JOIN category_users ON category_users.category_id = categories.id AND category_users.user_id = #{user.id}",
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)
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.joins(
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"LEFT JOIN category_users category_users2 ON category_users2.category_id = categories2.id AND category_users2.user_id = #{user.id}",
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)
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direct_category_muted_sql =
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"COALESCE(category_users.notification_level, #{CategoryUser.default_notification_level}) = #{CategoryUser.notification_levels[:muted]}"
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parent_category_muted_sql =
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"(category_users.id IS NULL AND COALESCE(category_users2.notification_level, #{CategoryUser.default_notification_level}) = #{notification_levels[:muted]})"
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conditions = [parent_category_muted_sql]
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conditions.push(direct_category_muted_sql) if include_direct
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if SiteSetting.max_category_nesting === 3
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query =
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query.joins(
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"LEFT JOIN categories categories3 ON categories3.id = categories2.parent_category_id",
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).joins(
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"LEFT JOIN category_users category_users3 ON category_users3.category_id = categories3.id AND category_users3.user_id = #{user.id}",
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)
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grandparent_category_muted_sql =
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"(category_users.id IS NULL AND category_users2.id IS NULL AND COALESCE(category_users3.notification_level, #{CategoryUser.default_notification_level}) = #{notification_levels[:muted]})"
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conditions.push(grandparent_category_muted_sql)
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end
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query.where(conditions.join(" OR "))
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end
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def self.muted_category_ids(user)
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muted_category_ids_query(user, include_direct: true).pluck("categories.id")
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end
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def self.indirectly_muted_category_ids(user)
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muted_category_ids_query(user).pluck("categories.id")
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end
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end
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# == Schema Information
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#
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# Table name: category_users
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#
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# id :integer not null, primary key
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# category_id :integer not null
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# user_id :integer not null
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# notification_level :integer not null
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# last_seen_at :datetime
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#
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# Indexes
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#
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# idx_category_users_category_id_user_id (category_id,user_id) UNIQUE
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# idx_category_users_user_id_category_id (user_id,category_id) UNIQUE
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# index_category_users_on_user_id_and_last_seen_at (user_id,last_seen_at)
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#
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