class Submission < ApplicationRecord
  belongs_to :form
  has_many_attached :files

  acts_as_sequenced scope: :form_id

  validates_presence_of :data, if: :appended_at?

  def process_data(submitted_data)
    processed_data = {}
    submitted_data.each do |key, value|
      processed_data[key] = submission_value_for(value)
    end
    update_attribute(:data, processed_data)
    SubmissionAppendJob.perform_later(self.id)
  end

  def submission_value_for(value)
    case value
    when Array
      value.join(', ')
    when Hash
      JSON.dump(value)
    when 'tinyforms_now'
      Time.now.utc.to_formatted_s(:rfc822)
    when 'tinyforms_token'
      form.token
    when 'tinyforms_id'
      sequential_id
    when ActionDispatch::Http::UploadedFile
      # manually create the ActiveStorage attachment because we need the ID of the Attachment to create the URL
      # first the file needs to be uplaoded then we can create an Attachment
      # The CreateOne mainly handles the uplaod and the creation of the blob for us
      # `files` is the name from `has_many_attached :files`
      create_one = ActiveStorage::Attached::Changes::CreateOne.new('files', self, value)
      create_one.upload
      attachment = ActiveStorage::Attachment.new(record: self, name: 'files', blob: create_one.blob)
      attachment.save
      # return the URL that we use to show in the Spreadsheet
      Rails.application.routes.url_helpers.file_upload_url(form_id: form, submission_id: self, id: attachment.token, host: DEFAULT_HOST)
    else
      value.to_s
    end
  end

  def append_to_spreadsheet
    form.append_to_spreadsheet(data) &&
      update_column(:appended_at, Time.current)
  end
end