db(task): create previews for pjs in one week

app/tasks/maintenance/create_previews_for_pj_of_latest_dossiers_task.rb

@@ -0,0 +1,36 @@
+# frozen_string_literal: true
+
+module Maintenance
+  class CreatePreviewsForPjOfLatestDossiersTask < MaintenanceTasks::Task
+    attribute :start_text, :string
+    validates :start_text, presence: true
+
+    attribute :end_text, :string
+    validates :end_text, presence: true
+
+    def collection
+      start_date = DateTime.parse(start_text)
+      end_date = DateTime.parse(end_text)
+
+      Dossier
+        .state_en_construction_ou_instruction
+        .where(depose_at: start_date..end_date)
+    end
+
+    def process(dossier)
+      champ_ids = Champ
+        .where(dossier_id: dossier)
+        .where(type: ["Champs::PieceJustificativeChamp", 'Champs::TitreIdentiteChamp'])
+        .ids
+
+      attachments = ActiveStorage::Attachment
+        .where(record_id: champ_ids)
+
+      attachments.each do |attachment|
+        next if !(attachment.previewable? && attachment.representation_required?)
+        attachment.preview(resize_to_limit: [400, 400]).processed unless attachment.preview(resize_to_limit: [400, 400]).image.attached?
+      rescue MiniMagick::Error
+      end
+    end
+  end
+end

spec/tasks/maintenance/create_previews_for_pj_of_latest_dossiers_task_spec.rb

@@ -0,0 +1,49 @@
+# frozen_string_literal: true
+
+require "rails_helper"
+
+module Maintenance
+  RSpec.describe CreatePreviewsForPjOfLatestDossiersTask do
+    describe "#process" do
+      let(:procedure) { create(:procedure_with_dossiers) }
+      let(:dossier) { procedure.dossiers.first }
+      let(:type_de_champ_pj) { create(:type_de_champ_piece_justificative, stable_id: 3, libelle: 'Justificatif de domicile', procedure:) }
+      let(:champ_pj) { create(:champ_piece_justificative, type_de_champ: type_de_champ_pj, dossier:) }
+      let(:blob_info) do
+        {
+          filename: file.original_filename,
+          byte_size: file.size,
+          checksum: Digest::SHA256.file(file.path),
+          content_type: file.content_type,
+          # we don't want to run virus scanner on this file
+          metadata: { virus_scan_result: ActiveStorage::VirusScanner::SAFE }
+        }
+      end
+      let(:blob) do
+        blob = ActiveStorage::Blob.create_before_direct_upload!(**blob_info)
+        blob.upload(file)
+        blob
+      end
+
+      let(:attachment) { ActiveStorage::Attachment.create(name: "test", blob: blob, record: champ_pj) }
+
+      before do
+        dossier.update(
+          depose_at: Date.new(2024, 05, 23),
+          state: "en_construction"
+        )
+      end
+
+      subject(:process) { described_class.process(dossier) }
+
+      context "when pj is a pdf" do
+        let(:file) { fixture_file_upload('spec/fixtures/files/RIB.pdf', 'application/pdf') }
+
+        it "creates a preview" do
+          expect(attachment.preview(resize_to_limit: [400, 400]).image.attached?).to be false
+          expect { subject }.to change { attachment.reload.preview(resize_to_limit: [400, 400]).image.attached? }
+        end
+      end
+    end
+  end
+end