demarches-normaliennes/app/models/export.rb

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# == Schema Information
#
# Table name: exports
#
# id :bigint not null, primary key
# format :string not null
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# key :text not null
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# created_at :datetime not null
# updated_at :datetime not null
#
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class Export < ApplicationRecord
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MAX_DUREE_CONSERVATION_EXPORT = 3.hours
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enum format: {
csv: 'csv',
ods: 'ods',
xlsx: 'xlsx'
}
has_and_belongs_to_many :groupe_instructeurs
has_one_attached :file
validates :format, :groupe_instructeurs, :key, presence: true
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scope :stale, -> { where('exports.updated_at < ?', (Time.zone.now - MAX_DUREE_CONSERVATION_EXPORT)) }
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after_create_commit :compute_async
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def compute_async
ExportJob.perform_later(self)
end
def compute
file.attach(
io: io,
filename: filename,
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content_type: content_type,
# We generate the exports ourselves, so they are safe
metadata: { virus_scan_result: ActiveStorage::VirusScanner::SAFE }
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)
end
def ready?
file.attached?
end
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def old?
updated_at < 20.minutes.ago
end
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def self.find_or_create_export(format, groupe_instructeurs)
create_with(groupe_instructeurs: groupe_instructeurs)
.create_or_find_by(format: format, key: generate_cache_key(groupe_instructeurs.map(&:id)))
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end
def self.find_for_groupe_instructeurs(groupe_instructeurs_ids)
exports = where(key: generate_cache_key(groupe_instructeurs_ids))
['xlsx', 'csv', 'ods']
.map { |format| exports.find { |export| export.format == format } }
end
def self.generate_cache_key(groupe_instructeurs_ids)
groupe_instructeurs_ids.sort.join('-')
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end
private
def filename
procedure_identifier = procedure.path || "procedure-#{procedure.id}"
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"dossiers_#{procedure_identifier}_#{Time.zone.now.strftime('%Y-%m-%d_%H-%M')}.#{format}"
end
def io
dossiers = Dossier.where(groupe_instructeur: groupe_instructeurs)
service = ProcedureExportService.new(procedure, dossiers)
case format.to_sym
when :csv
StringIO.new(service.to_csv)
when :xlsx
StringIO.new(service.to_xlsx)
when :ods
StringIO.new(service.to_ods)
end
end
def content_type
case format.to_sym
when :csv
'text/csv'
when :xlsx
'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet'
when :ods
'application/vnd.oasis.opendocument.spreadsheet'
end
end
def procedure
groupe_instructeurs.first.procedure
end
end