stevenbeales / mental-test

class Journal < ApplicationRecord

  belongs_to :participant, inverse_of: :journal

  has_many :journal_entries, inverse_of: :journal, dependent: :destroy

  validates :participant, presence: true

  validates :name, presence: true

  validates_uniqueness_of :name

  validates_length_of :name, \

                      within: 2..50, \

                      too_long: 'pick a shorter name', \

                      too_short: 'pick a longer name'

  after_initialize :create_entry_for_today

  def list_entries(limit: 4)

    entries = journal_entries.order('entry_date DESC').limit(limit)

    entries.join(' ')

  end

  def read_entry(day)

    JournalEntry.where(entry_date: day.beginning_of_day..day.end_of_day)

  end

  def read_last(last_n: 1)

    JournalEntry.order('ID DESC').limit(last_n)

  end

  def to_s

    name

  end

  private

  def create_entry_for_today

    journal_entries.concat(JournalEntry.new(journal: self)) if new_record?

  end

end