# frozen_string_literal: true

class PublicFeed
  # @param [Account] account
  # @param [Hash] options
  # @option [Boolean] :with_replies
  # @option [Boolean] :with_reblogs
  # @option [Boolean] :local
  # @option [Boolean] :remote
  # @option [Boolean] :only_media
  def initialize(account, options = {})
    @account = account
    @options = options
  end

  # @param [Integer] limit
  # @param [Integer] max_id
  # @param [Integer] since_id
  # @param [Integer] min_id
  # @return [Array<Status>]
  def get(limit, max_id = nil, since_id = nil, min_id = nil)
    return [] if local_only? && !Setting.enable_local_timeline

    scope = public_scope

    scope.merge!(without_replies_scope) unless with_replies?
    scope.merge!(without_reblogs_scope) unless with_reblogs?
    scope.merge!(local_only_scope) if local_only?
    scope.merge!(remote_only_scope) if remote_only? || hide_local_users?
    scope.merge!(account_filters_scope) if account?
    scope.merge!(media_only_scope) if media_only?
    scope.merge!(language_scope) if account&.chosen_languages.present?
    # scope.merge!(anonymous_scope) unless account?
    scope = to_anonymous_scope(scope) unless account?

    scope.to_a_paginated_by_id(limit, max_id: max_id, since_id: since_id, min_id: min_id)
  end

  private

  attr_reader :account, :options

  def with_reblogs?
    options[:with_reblogs]
  end

  def with_replies?
    options[:with_replies]
  end

  def local_only?
    options[:local] && !options[:remote]
  end

  def remote_only?
    options[:remote] && !options[:local] && Setting.enable_local_timeline
  end

  def hide_local_users?
    @account.nil? && Setting.hide_local_users_for_anonymous
  end

  def account?
    account.present?
  end

  def media_only?
    options[:only_media]
  end

  def public_scope
    Status.with_public_visibility.joins(:account).merge(Account.without_suspended.without_silenced)
  end

  def public_search_scope
    Status.with_public_search_visibility.joins(:account).merge(Account.without_suspended.without_silenced)
  end

  def local_only_scope
    Status.local
  end

  def remote_only_scope
    Status.remote
  end

  def without_replies_scope
    Status.without_replies
  end

  def without_reblogs_scope
    Status.without_reblogs
  end

  def media_only_scope
    Status.joins(:media_attachments).group(:id)
  end

  def language_scope
    Status.where(language: account.chosen_languages)
  end

  def anonymous_scope
    local_only? ? Status.where(visibility: [:public, :public_unlisted]) : Status.where(visibility: :public)
  end

  def to_anonymous_scope(scope)
    scope.where.not(visibility: :login)
  end

  def account_filters_scope
    Status.not_excluded_by_account(account).tap do |scope|
      scope.merge!(Status.not_domain_blocked_by_account(account)) unless local_only?
    end
  end
end