# EffectiveCpdUser
#
# Mark your user model with effective_cpd_user to get a few helpers
# And user specific point required scores

module EffectiveCpdUser
  extend ActiveSupport::Concern

  module Base
    def effective_cpd_user
      include ::EffectiveCpdUser
    end
  end

  module ClassMethods
    def effective_cpd_user?; true; end
  end

  included do
    # App Scoped
    has_many :cpd_statements, -> { order(:cpd_cycle_id) }, inverse_of: :user, dependent: :destroy
    accepts_nested_attributes_for :cpd_statements, allow_destroy: true

    has_many :cpd_audits, -> { order(:id) }, inverse_of: :user
    has_many :cpd_audit_reviews, -> { order(:id) }, inverse_of: :user

    # Effective scoped
    has_many :cpd_targets, -> { order(:cpd_cycle_id) }, inverse_of: :user, class_name: 'Effective::CpdTarget', dependent: :delete_all
    accepts_nested_attributes_for :cpd_targets, reject_if: proc { |atts| atts['score'].blank? && atts['required_to_submit'].blank? }

    # These two should not be sorted
    scope :cpd_audit_auditees, -> { without_role(:cpd_audit_reviewer).without_role(:admin) }
    scope :cpd_audit_reviewers, -> { with_role(:cpd_audit_reviewer) }

    scope :sorted_by_in_progress_cpd_audit_reviews, -> {
      left_joins(:cpd_audit_reviews)
        .where(cpd_audit_reviews: { submitted_at: nil})
        .includes(:cpd_audit_reviews)
        .group(:id)
        .order('COUNT(cpd_audit_reviews.id) ASC')
        .order('MAX(cpd_audit_reviews.created_at) ASC')
        .order('id ASC')
    }
  end

  # Requires for this user
  def cpd_target_score(cpd_cycle:)
    target = cpd_target(cpd_cycle: cpd_cycle)
    return target.score if target&.score.present?

    default_cpd_target_score(cpd_cycle: cpd_cycle)
  end

  # Required for this user category without the targets
  # Otherwise calculate default by membership category
  def default_cpd_target_score(cpd_cycle:)
    if self.class.try(:effective_memberships_user?)
      category = membership_categories_on(cpd_cycle.start_at)&.first if cpd_cycle.start_at.present?
      category ||= membership_categories_on(cpd_cycle.end_at)&.first if cpd_cycle.end_at.present?
      category ||= membership&.categories&.first

      category&.cpd_target_score(cpd_cycle: cpd_cycle)
    end
  end

  def cpd_target_score_required_to_submit?(cpd_cycle:)
    target = cpd_target(cpd_cycle: cpd_cycle)
    return target.required_to_submit? unless target&.required_to_submit.nil?

    cpd_cycle.required_to_submit?
  end

  def cpd_audit_cpd_required?
    true
  end

  def cpd_audit_reviewer?
    roles.include?(:cpd_audit_reviewer)
  end

  def cpd_statement(cpd_cycle:)
    raise('expected an CpdCycle') unless cpd_cycle.class.respond_to?(:effective_cpd_cpd_cycle?)
    cpd_statements.find { |cpd_statement| cpd_statement.cpd_cycle_id == cpd_cycle.id }
  end

  # Find or build
  def build_cpd_statement(cpd_cycle:)
    raise('expected an CpdCycle') unless cpd_cycle.class.respond_to?(:effective_cpd_cpd_cycle?)
    cpd_statement(cpd_cycle: cpd_cycle) || cpd_statements.build(cpd_cycle: cpd_cycle)
  end

  # Dont use IDs here
  def cpd_target(cpd_cycle:)
    raise('expected an CpdCycle') unless cpd_cycle.class.respond_to?(:effective_cpd_cpd_cycle?)
    cpd_targets.find { |cpd_target| cpd_target.cpd_cycle == cpd_cycle }
  end

  # Find or build
  def build_cpd_target(cpd_cycle:)
    raise('expected an CpdCycle') unless cpd_cycle.class.respond_to?(:effective_cpd_cpd_cycle?)
    cpd_target(cpd_cycle: cpd_cycle) || cpd_targets.build(cpd_cycle: cpd_cycle)
  end

  # For the form
  def build_cpd_targets
    Effective::CpdCycle.sorted.all.each { |cpd_cycle| build_cpd_target(cpd_cycle: cpd_cycle) }
    cpd_targets.sort_by(&:cpd_cycle_id).reverse
  end

end