# Copyright (C) 2012-2014 Zammad Foundation, http://zammad-foundation.org/

module User::Search

=begin

search user

  result = User.search(
    :query        => 'some search term'
    :limit        => 15,
    :current_user => user_model,
  )

returns

  result = [user_model1, user_model2, ...]

=end

  def search(params)

    # get params
    query = params[:query]
    limit = params[:limit] || 10
    current_user = params[:current_user]

    # enable search only for agents and admins
    return [] if !current_user.is_role('Agent') && !current_user.is_role(Z_ROLENAME_ADMIN)

    # try search index backend
    if SearchIndexBackend.enabled?
      items = SearchIndexBackend.search( query, limit, 'User' )
      users = []
      items.each { |item|
        users.push User.lookup( id: item[:id] )
      }
      return users
    end

    # fallback do sql query
    # - stip out * we already search for *query* -
    query.gsub! '*', ''
    if params[:role_ids]
      users = User.joins(:roles).where( 'roles.id' => params[:role_ids] ).where(
        '(users.firstname LIKE ? or users.lastname LIKE ? or users.email LIKE ?) AND users.id != 1', "%#{query}%", "%#{query}%", "%#{query}%",
      ).order('firstname').limit(limit)
    else
      users = User.where(
        '(firstname LIKE ? or lastname LIKE ? or email LIKE ?) AND id != 1', "%#{query}%", "%#{query}%", "%#{query}%",
      ).order('firstname').limit(limit)
    end
    return users
  end

end