scottohara/loot

# Copyright (c) 2016 Scott O'Hara, oharagroup.net
# frozen_string_literal: true

# Transaction header
class TransactionHeader < ApplicationRecord
    # trx is not really optional, but because the inverse has_one association is defined on a subclass of Transaction,
    # when we build of of these (trx.build_header), this association is not automatically populated
    belongs_to :trx, foreign_key: 'transaction_id', class_name: 'Transaction', optional: true
    belongs_to :schedule, dependent: :destroy, autosave: true, optional: true
    self.primary_key = 'transaction_id'

    def validate_transaction_date_or_schedule_presence
        errors.add :base, "Either transaction date or schedule can't be blank" if transaction_date.blank? && schedule.blank?
    end

    def validate_transaction_date_or_schedule_absence
        errors.add :base, 'Either transaction date or schedule must be blank' if transaction_date.present? && schedule.present?
    end

    def update_from_json(json)
        self.transaction_date = json['transaction_date']

        if json['transaction_date'].nil?
            self.schedule ||= build_schedule
            schedule.assign_attributes next_due_date: json['next_due_date'], frequency: json['frequency'], estimate: json['estimate'].eql?(true), auto_enter: json['auto_enter'].eql?(true)
        else
            schedule&.destroy!
        end

        self
    end

    def as_json(_options = {})
        ((schedule.present? && schedule.as_json) || {}).merge(transaction_date:)
    end
end