# frozen_string_literal: true

class UserOption < ActiveRecord::Base
  HOMEPAGES = {
    # -1 => reserved for "custom homepage"
    1 => "latest",
    2 => "categories",
    3 => "unread",
    4 => "new",
    5 => "top",
    6 => "bookmarks",
    7 => "unseen",
    # 8 => reserved for "hot"
  }

  self.ignored_columns = [
    "sidebar_list_destination", # TODO: Remove when 20240212034010_drop_deprecated_columns has been promoted to pre-deploy
  ]

  self.primary_key = :user_id
  belongs_to :user
  before_create :set_defaults

  after_save :update_tracked_topics

  scope :human_users, -> { where("user_id > 0") }

  enum default_calendar: { none_selected: 0, ics: 1, google: 2 }, _scopes: false

  def self.ensure_consistency!
    sql = <<~SQL
      SELECT u.id FROM users u
      LEFT JOIN user_options o ON o.user_id = u.id
      WHERE o.user_id IS NULL
    SQL

    DB.query_single(sql).each { |id| UserOption.create(user_id: id) }
  end

  def self.previous_replies_type
    @previous_replies_type ||= Enum.new(always: 0, unless_emailed: 1, never: 2)
  end

  def self.like_notification_frequency_type
    @like_notification_frequency_type ||=
      Enum.new(always: 0, first_time_and_daily: 1, first_time: 2, never: 3)
  end

  def self.text_sizes
    @text_sizes ||= Enum.new(normal: 0, larger: 1, largest: 2, smaller: 3, smallest: 4)
  end

  def self.title_count_modes
    @title_count_modes ||= Enum.new(notifications: 0, contextual: 1)
  end

  def self.email_level_types
    @email_level_type ||= Enum.new(always: 0, only_when_away: 1, never: 2)
  end

  validates :text_size_key, inclusion: { in: UserOption.text_sizes.values }
  validates :email_level, inclusion: { in: UserOption.email_level_types.values }
  validates :email_messages_level, inclusion: { in: UserOption.email_level_types.values }
  validates :timezone, timezone: true

  def set_defaults
    self.mailing_list_mode = SiteSetting.default_email_mailing_list_mode
    self.mailing_list_mode_frequency = SiteSetting.default_email_mailing_list_mode_frequency
    self.email_level = SiteSetting.default_email_level
    self.email_messages_level = SiteSetting.default_email_messages_level
    self.automatically_unpin_topics = SiteSetting.default_topics_automatic_unpin
    self.email_previous_replies = SiteSetting.default_email_previous_replies
    self.email_in_reply_to = SiteSetting.default_email_in_reply_to

    self.enable_quoting = SiteSetting.default_other_enable_quoting
    self.enable_defer = SiteSetting.default_other_enable_defer
    self.external_links_in_new_tab = SiteSetting.default_other_external_links_in_new_tab
    self.dynamic_favicon = SiteSetting.default_other_dynamic_favicon
    self.skip_new_user_tips = SiteSetting.default_other_skip_new_user_tips

    self.new_topic_duration_minutes = SiteSetting.default_other_new_topic_duration_minutes
    self.auto_track_topics_after_msecs = SiteSetting.default_other_auto_track_topics_after_msecs
    self.notification_level_when_replying =
      SiteSetting.default_other_notification_level_when_replying

    self.like_notification_frequency = SiteSetting.default_other_like_notification_frequency

    self.email_digests = SiteSetting.default_email_digest_frequency.to_i > 0
    self.digest_after_minutes = SiteSetting.default_email_digest_frequency.to_i
    self.include_tl0_in_digests = SiteSetting.default_include_tl0_in_digests

    self.text_size = SiteSetting.default_text_size

    self.title_count_mode = SiteSetting.default_title_count_mode

    self.hide_profile_and_presence = SiteSetting.default_hide_profile_and_presence
    self.sidebar_link_to_filtered_list = SiteSetting.default_sidebar_link_to_filtered_list
    self.sidebar_show_count_of_new_items = SiteSetting.default_sidebar_show_count_of_new_items

    true
  end

  def mailing_list_mode
    SiteSetting.disable_mailing_list_mode ? false : super
  end

  def redirected_to_top_yet?
    last_redirected_to_top_at.present?
  end

  def update_last_redirected_to_top!
    key = "user:#{id}:update_last_redirected_to_top"
    delay = SiteSetting.active_user_rate_limit_secs

    # only update last_redirected_to_top_at once every minute
    return unless Discourse.redis.setnx(key, "1")
    Discourse.redis.expire(key, delay)

    # delay the update
    Jobs.enqueue_in(
      delay / 2,
      :update_top_redirection,
      user_id: self.user_id,
      redirected_at: Time.zone.now.to_s,
    )
  end

  def should_be_redirected_to_top
    redirected_to_top.present?
  end

  def redirected_to_top
    # redirect is enabled
    return unless SiteSetting.redirect_users_to_top_page

    # PERF: bypass min_redirected_to_top query for users that were seen already
    return if user.trust_level > 0 && user.last_seen_at && user.last_seen_at > 1.month.ago

    # top must be in the top_menu
    return unless SiteSetting.top_menu[/\btop\b/i]

    # not enough topics
    return unless period = SiteSetting.min_redirected_to_top_period(1.day.ago)

    if !user.seen_before? || (user.trust_level == 0 && !redirected_to_top_yet?)
      update_last_redirected_to_top!
      return { reason: I18n.t("redirected_to_top_reasons.new_user"), period: period }
    elsif user.last_seen_at < 1.month.ago
      update_last_redirected_to_top!
      return { reason: I18n.t("redirected_to_top_reasons.not_seen_in_a_month"), period: period }
    end

    # don't redirect to top
    nil
  end

  def treat_as_new_topic_start_date
    duration =
      new_topic_duration_minutes || SiteSetting.default_other_new_topic_duration_minutes.to_i
    times = [
      case duration
      when User::NewTopicDuration::ALWAYS
        user.created_at
      when User::NewTopicDuration::LAST_VISIT
        user.previous_visit_at || user.user_stat.new_since
      else
        duration.minutes.ago
      end,
      user.created_at,
      Time.at(SiteSetting.min_new_topics_time).to_datetime,
    ]

    times.max
  end

  def homepage
    return HOMEPAGES[homepage_id] if HOMEPAGES.keys.include?(homepage_id)

    "hot" if homepage_id == 8 && SiteSetting.top_menu_map.include?("hot")
  end

  def text_size
    UserOption.text_sizes[text_size_key]
  end

  def text_size=(value)
    self.text_size_key = UserOption.text_sizes[value.to_sym]
  end

  def title_count_mode
    UserOption.title_count_modes[title_count_mode_key]
  end

  def title_count_mode=(value)
    self.title_count_mode_key = UserOption.title_count_modes[value.to_sym]
  end

  def unsubscribed_from_all?
    !mailing_list_mode && !email_digests && email_level == UserOption.email_level_types[:never] &&
      email_messages_level == UserOption.email_level_types[:never]
  end

  def likes_notifications_disabled?
    like_notification_frequency == UserOption.like_notification_frequency_type[:never]
  end

  def self.user_tzinfo(user_id)
    timezone = UserOption.where(user_id: user_id).pluck(:timezone).first || "UTC"

    tzinfo = nil
    begin
      tzinfo = ActiveSupport::TimeZone.find_tzinfo(timezone)
    rescue TZInfo::InvalidTimezoneIdentifier
      Rails.logger.warn(
        "#{User.find_by(id: user_id)&.username} has the timezone #{timezone} set, we do not know how to parse it in Rails, fallback to UTC",
      )
      tzinfo = ActiveSupport::TimeZone.find_tzinfo("UTC")
    end

    tzinfo
  end

  private

  def update_tracked_topics
    return unless saved_change_to_auto_track_topics_after_msecs?
    TrackedTopicsUpdater.new(id, auto_track_topics_after_msecs).call
  end
end

# == Schema Information
#
# Table name: user_options
#
#  user_id                              :integer          not null, primary key
#  mailing_list_mode                    :boolean          default(FALSE), not null
#  email_digests                        :boolean
#  external_links_in_new_tab            :boolean          default(FALSE), not null
#  enable_quoting                       :boolean          default(TRUE), not null
#  dynamic_favicon                      :boolean          default(FALSE), not null
#  automatically_unpin_topics           :boolean          default(TRUE), not null
#  digest_after_minutes                 :integer
#  auto_track_topics_after_msecs        :integer
#  new_topic_duration_minutes           :integer
#  last_redirected_to_top_at            :datetime
#  email_previous_replies               :integer          default(2), not null
#  email_in_reply_to                    :boolean          default(TRUE), not null
#  like_notification_frequency          :integer          default(1), not null
#  mailing_list_mode_frequency          :integer          default(1), not null
#  include_tl0_in_digests               :boolean          default(FALSE)
#  notification_level_when_replying     :integer
#  theme_key_seq                        :integer          default(0), not null
#  allow_private_messages               :boolean          default(TRUE), not null
#  homepage_id                          :integer
#  theme_ids                            :integer          default([]), not null, is an Array
#  hide_profile_and_presence            :boolean          default(FALSE), not null
#  text_size_key                        :integer          default(0), not null
#  text_size_seq                        :integer          default(0), not null
#  email_level                          :integer          default(1), not null
#  email_messages_level                 :integer          default(0), not null
#  title_count_mode_key                 :integer          default(0), not null
#  enable_defer                         :boolean          default(FALSE), not null
#  timezone                             :string
#  enable_allowed_pm_users              :boolean          default(FALSE), not null
#  dark_scheme_id                       :integer
#  skip_new_user_tips                   :boolean          default(FALSE), not null
#  color_scheme_id                      :integer
#  default_calendar                     :integer          default("none_selected"), not null
#  chat_enabled                         :boolean          default(TRUE), not null
#  only_chat_push_notifications         :boolean
#  oldest_search_log_date               :datetime
#  chat_sound                           :string
#  dismissed_channel_retention_reminder :boolean
#  dismissed_dm_retention_reminder      :boolean
#  bookmark_auto_delete_preference      :integer          default(3), not null
#  ignore_channel_wide_mention          :boolean
#  chat_email_frequency                 :integer          default(1), not null
#  enable_experimental_sidebar          :boolean          default(FALSE)
#  seen_popups                          :integer          is an Array
#  chat_header_indicator_preference     :integer          default(0), not null
#  sidebar_link_to_filtered_list        :boolean          default(FALSE), not null
#  sidebar_show_count_of_new_items      :boolean          default(FALSE), not null
#  watched_precedence_over_muted        :boolean
#  chat_separate_sidebar_mode           :integer          default(0), not null
#  topics_unread_when_closed            :boolean          default(TRUE), not null
#  show_thread_title_prompts            :boolean          default(TRUE), not null
#
# Indexes
#
#  index_user_options_on_user_id                        (user_id) UNIQUE
#  index_user_options_on_user_id_and_default_calendar   (user_id,default_calendar)
#  index_user_options_on_watched_precedence_over_muted  (watched_precedence_over_muted)
#