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fab-manager/db/migrate/20190522115230_migrate_invoice_to_invoicing_profile.rb

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# frozen_string_literal: true
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require 'integrity/archive_helper'
# migrate the invoices from being attached to a user to invoicing_profiles which are GDPR compliant
class MigrateInvoiceToInvoicingProfile < ActiveRecord::Migration[4.2]
def up
# first, check the footprints
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Integrity::ArchiveHelper.check_footprints
# if everything is ok, proceed with migration
# remove and save periods in memory
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periods = Integrity::ArchiveHelper.backup_and_remove_periods
# migrate invoices
puts 'Migrating invoices. This may take a while...'
Invoice.order(:id).all.each do |i|
user = User.find(i.user_id)
operator = User.find_by(id: i.operator_id)
i.update_column('invoicing_profile_id', user.invoicing_profile.id)
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i.update_column('statistic_profile_id', user.statistic_profile.id)
i.update_column('operator_profile_id', operator&.invoicing_profile&.id)
i.update_column('user_id', nil)
i.update_column('operator_id', nil)
end
# chain all records
InvoiceItem.order(:id).all.each(&:chain_record)
Invoice.order(:id).all.each(&:chain_record)
# write memory dump into database
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Integrity::ArchiveHelper.restore_periods(periods)
end
def down
# here we don't check footprints to save processing time and because this is pointless when reverting the migrations
# remove and save periods in memory
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periods = Integrity::ArchiveHelper.backup_and_remove_periods
# reset invoices
Invoice.order(:created_at).all.each do |i|
i.update_column('user_id', i.invoicing_profile.user_id)
i.update_column('operator_id', i.operator_profile.user_id)
i.update_column('invoicing_profile_id', nil)
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i.update_column('statistic_profile_id', nil)
i.update_column('operator_profile_id', nil)
end
# chain all records
InvoiceItem.order(:id).all.each(&:chain_record)
Invoice.order(:id).all.each(&:chain_record)
# write memory dump into database
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Integrity::ArchiveHelper.restore_periods(periods)
end
end