# frozen_string_literal: true

class Party < ApplicationRecord
  ##### ActiveRecord Associations
  belongs_to :user, optional: true
  belongs_to :raid, optional: true
  belongs_to :job, optional: true

  belongs_to :skill0,
             foreign_key: 'skill0_id',
             class_name: 'JobSkill',
             optional: true

  belongs_to :skill1,
             foreign_key: 'skill1_id',
             class_name: 'JobSkill',
             optional: true

  belongs_to :skill2,
             foreign_key: 'skill2_id',
             class_name: 'JobSkill',
             optional: true

  belongs_to :skill3,
             foreign_key: 'skill3_id',
             class_name: 'JobSkill',
             optional: true

  has_many :characters,
           foreign_key: 'party_id',
           class_name: 'GridCharacter',
           dependent: :destroy

  has_many :weapons,
           foreign_key: 'party_id',
           class_name: 'GridWeapon',
           dependent: :destroy

  has_many :summons,
           foreign_key: 'party_id',
           class_name: 'GridSummon',
           dependent: :destroy

  has_many :favorites

  before_save :set_shortcode
  ##### ActiveRecord Validations
  validate :skills_are_unique

  attr_accessor :favorited

  def is_favorited(user)
    user.favorite_parties.include? self
  end

  def blueprint
    PartyBlueprint
  end

  private

  def set_shortcode
    self.shortcode = random_string
  end

  def random_string
    num_chars = 6
    o = [('a'..'z'), ('A'..'Z'), (0..9)].map(&:to_a).flatten
    (0...num_chars).map { o[rand(o.length)] }.join
  end

  def skills_are_unique
    skills = [skill0, skill1, skill2, skill3].compact

    return if skills.uniq.length == skills.length

    skills.each_with_index do |skill, index|
      next if index.zero?

      errors.add(:"skill#{index + 1}", 'must be unique') if skills[0...index].include?(skill)
    end

    errors.add(:job_skills, 'must be unique')
  end
end