Session: composed-crunching-lynx-subagent-a999dcd — 2026-02-02

Project: doctolib-doctolib · Branch: master · Mode: ` · **Model:**claude-haiku-4-5-20251001`

Stats: 1 user messages, 65 tool calls, tools used: Grep, Glob, Bash, Read.

Conversation

Turn 1 — User

Find and analyze the UPLOAD_DOCUMENT_WRITE feature switch implementation:

1. Locate the feature switch definition and where it's used
2. Understand what code paths change when this feature switch is enabled
3. Focus on document upload and retrieval logic, particularly: - How documents are created (v1 vs v2 endpoints) - How document_url or decryptedFileUrl is generated - Any differences in how documents are fetched when the feature switch is on vs off
4. Look for any race conditions or timing issues in document creation/retrieval

Context: When UPLOAD_DOCUMENT_WRITE is enabled, clicking "dokumente anzeigen" fails on first attempt but works on second attempt. The document_url for decryptedFileUrl seems to be different between attempts. HAR files show POST to /doctor_app/v2/documents returns a document without a document_url field.

Turn 1 — Assistant

I'll help you analyze the UPLOAD_DOCUMENT_WRITE feature switch implementation. Let me start by searching for its definition and usage across the codebase.

Tools used:

• Grep: UPLOAD_DOCUMENT_WRITE in **/*.{rb,ts,tsx,js,jsx}

Tools used:

• Glob: **/*feature*switch*{.rb,.yml,.json}

Tools used:

• Glob: **/app/public/**/*document*.rb

Tool results:

→ result (ok): No files found

Tool results:

→ result (ok): No files found

Tool results:

→ result (ok): No files found

Let me search more broadly for the feature switch and document-related code.

Tools used:

• Grep: UPLOAD_DOCUMENT|UploadDocument in **/*.{rb,ts,tsx}

Tools used:

• Bash: find /Users/USER/workspace/doctolib/doctolib -type f -name "*document*" | head -30

Tool results:

→ result (ok): No files found

Tools used:

• Bash: find /Users/USER/workspace/doctolib/doctolib -type d -name "*ehr*" | head -20

Tool results:

→ result (ok): /Users/USER/workspace/doctolib/doctolib/.cursor/rules/backend/openapi-documentation.mdc /Users/USER/workspace/doctolib/doctolib/.cursor/rules/backend/public-documentation.mdc /Users/USER/workspace/doctolib/doctolib/app/models/security/tanker/group_document_reshare.rb /Users/USER/workspace/doctolib/doctolib/app/models/consultation_document_template.rb /Users/USER/workspace/doctolib/doctolib/app/models/consultation_document_templates_speciality.rb /Users/USER/workspace/doctolib/doctolib/app/models …(truncated, 2427 more chars)

Tool results:

→ result (ok): /Users/USER/workspace/doctolib/doctolib/sorbet/rbi/dsl/ehr /Users/USER/workspace/doctolib/doctolib/app/models/farming_actions/validators/ehr /Users/USER/workspace/doctolib/doctolib/app/models/processors/update/ehr_medication_requests /Users/USER/workspace/doctolib/doctolib/app/models/processors/clone/ehr_paper_forms /Users/USER/workspace/doctolib/doctolib/app/models/processors/clone/ehr_rich_texts /Users/USER/workspace/doctolib/doctolib/app/models/processors/clone/ehr_observations /Users/USER/wo …(truncated, 1139 more chars)

Let me search for doctor_app routes and controllers related to documents:

Tools used:

• Bash: find /Users/USER/workspace/doctolib/doctolib -path "*doctor_app*" -name "*document*" -type f | head -30

Tools used:

• Bash: find /Users/USER/workspace/doctolib/doctolib -path "*engine*" -name "*.gemspec" | xargs grep -l "upload\|document" 2>/dev/null | head -10

Tools used:

• Bash: ls -la /Users/USER/workspace/doctolib/doctolib/engines/ | grep -i document

Tool results:

→ result (ok): drwxr-xr-x clertonra staff 544 B Wed Dec 17 16:18:21 2025 clinical_documents drwxr-xr-x clertonra staff 608 B Tue Jan 20 10:59:00 2026 document_categorization drwxr-xr-x clertonra staff 608 B Wed Jan 14 13:05:14 2026 document_request_rules drwxr-xr-x clertonra staff 544 B Wed Dec 17 16:18:23 2025 document_working_list drwxr-xr-x clertonra staff 608 B Mon Feb 2 14:45:13 2026 documents drwxr-xr-x clertonra staff 544 B Wed Jan 28 11:11:47 2026 documents_customization drwxr-xr-x clertonra sta …(truncated, 60 more chars)

Tool results:

→ result (ok): /Users/USER/workspace/doctolib/doctolib/app/policies/v2/doctor_app/document/document_creator_policy.rb /Users/USER/workspace/doctolib/doctolib/app/policies/doctor_app/appointment_documents/document_review_only_my_appointments_policy.rb /Users/USER/workspace/doctolib/doctolib/app/controllers/doctor_app/document_quick_sharings_controller.rb /Users/USER/workspace/doctolib/doctolib/app/controllers/doctor_app/appointment_documents/document_review_only_my_appointments_controller.rb /Users/USER/workspa …(truncated, 3771 more chars)

Tool results:

→ result (ok): /Users/USER/workspace/doctolib/doctolib/engines/availabilities/availabilities.gemspec /Users/USER/workspace/doctolib/doctolib/engines/doctowebsite/doctowebsite.gemspec /Users/USER/workspace/doctolib/doctolib/engines/e_prescription/e_prescription.gemspec /Users/USER/workspace/doctolib/doctolib/engines/patient_account_documents/patient_account_documents.gemspec /Users/USER/workspace/doctolib/doctolib/engines/activity_page/activity_page.gemspec /Users/USER/workspace/doctolib/doctolib/engines/demo_o …(truncated, 409 more chars)

Good! Let me look at the documents engine and the test file that mentions double write:

Tools used:

• Bash: ls -la /Users/USER/workspace/doctolib/doctolib/engines/documents/

Tool results:

→ result (ok): drwxr-xr-x clertonra staff 608 B Mon Feb 2 14:45:13 2026 . drwxr-xr-x clertonra staff 6.9 KB Mon Jan 5 14:47:40 2026 .. drwxr-xr-x clertonra staff 544 B Wed Dec 17 16:18:23 2025 app .rw-r--r-- clertonra staff 47 B Wed Dec 17 16:18:23 2025 babel.config.js .rw-r--r-- clertonra staff 590 B Wed Dec 17 16:18:23 2025 catalog-info.yaml .rw-r--r-- clertonra staff 134 B Wed Dec 17 16:18:23 2025 ci_pr_tests_custom_rules.json .rw-r--r-- clertonra staff 128 B Wed Dec 17 16:18:23 2025 CODEOWNERS.loc …(truncated, 858 more chars)

Tools used:

• Read: /Users/USER/workspace/doctolib/doctolib/test/integration/doctor_app/desktop/document_imports/upload_document_form_double_write_test.rb

Tool results:

→ result (ok): 1→# frozen_string_literal: true 2→# hardcoded_strings: true 3→ 4→require 'test_helper' 5→require 'test_utils/test_classes/with_fast_factory_load' 6→require 'test_utils/test_classes/setup_teardown/medical_data_platform_msw' 7→require_relative '../../../../../engines/documents/test/test_utils/helpers/s3_test_helper' 8→require_relative '../../../../../engines/documents/test/test_utils/helpers/document_encryption_stub_helper' 9→ 10→module Integration::Doct …(truncated, 11763 more chars)

Tools used:

• Bash: find /Users/USER/workspace/doctolib/doctolib/engines/documents -name "*.rb" | head -30

Tool results:

→ result (ok): /Users/USER/workspace/doctolib/doctolib/engines/documents/app/mailers/documents/document_mailer.rb /Users/USER/workspace/doctolib/doctolib/engines/documents/app/mailers/documents/application_mailer.rb /Users/USER/workspace/doctolib/doctolib/engines/documents/app/models/documents/document_filename.rb /Users/USER/workspace/doctolib/doctolib/engines/documents/app/models/documents/telehealth/document_kind.rb /Users/USER/workspace/doctolib/doctolib/engines/documents/app/models/documents/db4_record.rb …(truncated, 2587 more chars)

Now let me search for the UPLOAD_DOCUMENT_WRITE feature switch usage and related code:

Tools used:

• Bash: grep -r "upload_document_write" /Users/USER/workspace/doctolib/doctolib --include="*.rb" | head -20

Tools used:

• Bash: grep -r "UPLOAD_DOCUMENT" /Users/USER/workspace/doctolib/doctolib --include="*.rb" | head -20

Tools used:

• Bash: find /Users/USER/workspace/doctolib/doctolib/engines/documents/app -name "*controller*" -o -name "*upload*" | head -20

Tool results:

→ result (ok): /Users/USER/workspace/doctolib/doctolib/engines/documents/app/models/documents/document_upload.rb /Users/USER/workspace/doctolib/doctolib/engines/documents/app/controllers /Users/USER/workspace/doctolib/doctolib/engines/documents/app/controllers/documents/application_controller.rb /Users/USER/workspace/doctolib/doctolib/engines/documents/app/controllers/documents/pharmacy/documents_controller.rb /Users/USER/workspace/doctolib/doctolib/engines/documents/app/controllers/documents/configuration/app …(truncated, 1940 more chars)

Tool results:

→ result (ok)

Tool results:

→ result (ok): /Users/USER/workspace/doctolib/doctolib/test/integration/doctor_app/desktop/document_imports/upload_document_form_double_write_test.rb: describe 'with upload_document_write Feature Switch' do /Users/USER/workspace/doctolib/doctolib/test/integration/doctor_app/desktop/document_imports/upload_document_form_double_write_test.rb: before { stub_feature_switch_for :upload_document_write, true } /Users/USER/workspace/doctolib/doctolib/test/integration/doctor_app/desktop/document_imports/upload_ …(truncated, 598 more chars)

Let me look at the doctor_app documents controller and search for the v2 documents endpoint:

Tools used:

• Read: /Users/USER/workspace/doctolib/doctolib/engines/documents/app/controllers/documents/doctor_app/documents_controller.rb

Tool results:

→ result (ok): 1→# frozen_string_literal: true 2→ 3→class Documents::DoctorApp::DocumentsController < Documents::DoctorApp::ApplicationController 4→ include SoftDeletedRecordsLogging 5→ include Documents::ParseSignedId 6→ helper Documents::DocumentHelper 7→ helper_method :document_visible_by_professional?, :clear_document_path, :render_document_shared_by, :document_filename 8→ 9→ authenticate_with Authentication::Api::Filter::ACCOUNT 10→ before_action :set_depe …(truncated, 28282 more chars)

Tools used:

• Bash: find /Users/USER/workspace/doctolib/doctolib -path "*v2*doctor_app*" -name "*document*" -type f | head -20

Tools used:

• Bash: find /Users/USER/workspace/doctolib/doctolib -path "*api/v2*" -name "*document*" -type f 2>/dev/null | head -20

Tool results:

→ result (ok)

Tool results:

→ result (ok): /Users/USER/workspace/doctolib/doctolib/app/policies/v2/doctor_app/document/document_creator_policy.rb /Users/USER/workspace/doctolib/doctolib/test/policies/v2/doctor_app/document/document_creator_policy_test.rb /Users/USER/workspace/doctolib/doctolib/engines/documents/app/policies/v2/documents/doctor_app/patients/clear_document_policy.rb /Users/USER/workspace/doctolib/doctolib/engines/documents/app/policies/v2/documents/doctor_app/patients/document_access_helper.rb /Users/USER/workspace/doctoli …(truncated, 353 more chars)

Now let me search for the Document Creator service and look for the feature switch logic:

Tools used:

• Bash: find /Users/USER/workspace/doctolib/doctolib -path "*DoctorApp*Document*Creator*" -type f

Tools used:

• Bash: find /Users/USER/workspace/doctolib/doctolib/engines/documents -name "*creator*" -type f

Tool results:

→ result (ok): /Users/USER/workspace/doctolib/doctolib/engines/documents/app/services/documents/doctor_app/document/creator.rb /Users/USER/workspace/doctolib/doctolib/engines/documents/test/services/documents/doctor_app/document/creator_test.rb

Tools used:

• Bash: find /Users/USER/workspace/doctolib/doctolib -path "*documents*app*public*" -type f | head -20

Tool results:

→ result (ok): /Users/USER/workspace/doctolib/doctolib/engines/patient_account_documents/app/public/patient_account_documents/document_dto.rb /Users/USER/workspace/doctolib/doctolib/engines/patient_account_documents/app/public/patient_account_documents/sharing_dto.rb /Users/USER/workspace/doctolib/doctolib/engines/patient_account_documents/app/public/patient_account_documents/kinds.rb /Users/USER/workspace/doctolib/doctolib/engines/patient_account_documents/app/public/patient_account_documents/api/errors.rb /U …(truncated, 2243 more chars)

Tool results:

→ result (ok)

Let me examine the creator service:

Tools used:

• Read: /Users/USER/workspace/doctolib/doctolib/engines/documents/app/services/documents/doctor_app/document/creator.rb

Tool results:

→ result (ok): 1→# frozen_string_literal: true 2→ 3→class Documents::DoctorApp::Document::Creator 4→ include ActiveModel::Model 5→ 6→ attr_accessor :account, 7→ :current_context, 8→ :patient_id, 9→ :document_params, 10→ :accesses_options, 11→ :encryption_options, 12→ :categorization_params, 13→ :create_patient_account_document, 14→
…(truncated, 3347 more chars)

Tools used:

• Bash: grep -r "upload_document_write\|UPLOAD_DOCUMENT" /Users/USER/workspace/doctolib/doctolib/engines/documents --include="*.rb" | head -30

Tool results:

→ result (ok)

Now let me look at the Uploader service which handles the actual upload:

Tools used:

• Bash: find /Users/USER/workspace/doctolib/doctolib/engines/documents -name "*uploader*" -type f

Tool results:

→ result (ok): /Users/USER/workspace/doctolib/doctolib/engines/documents/app/services/documents/uploader.rb /Users/USER/workspace/doctolib/doctolib/engines/documents/test/services/documents/uploader_test.rb

Tools used:

• Read: /Users/USER/workspace/doctolib/doctolib/engines/documents/app/models/documents/uploader.rb

Tool results:

→ result (ERROR): <tool_use_error>File does not exist. Current working directory: /Users/USER/workspace/doctolib/doctolib/tmp</tool_use_error>

Tools used:

• Read: /Users/USER/workspace/doctolib/doctolib/engines/documents/app/services/documents/uploader.rb

Tool results:

→ result (ok): 1→# frozen_string_literal: true 2→ 3→module Documents 4→ class Uploader 5→ # @param document [Documents::Document] The document to upload 6→ # @param source [String, nil] External caller identifier for metrics (e.g., 'Documents::DoctorApp::DocumentsController') 7→ # Defaults to 'Documents::Uploader' for backward compatibility 8→ def initialize(document, source: nil) 9→ @document = document 10→ @source = source || self.class.nam …(truncated, 8812 more chars)

Tools used:

• Bash: grep -r "document_url\|decryptedFileUrl" /Users/USER/workspace/doctolib/doctolib/engines/documents --include="*.rb" | head -30

Tool results:

→ result (ok): /Users/USER/workspace/doctolib/doctolib/engines/documents/app/controllers/documents/patient_app/appointments/clear_documents_controller.rb: render json: { url: appointment_clear_document_url(<REDACTED>(token), format: :pdf) } /Users/USER/workspace/doctolib/doctolib/engines/documents/app/controllers/documents/doctor_app/appointments/clear_documents_controller.rb: @clear_document_url = clear_document_path(format: :pdf) /Users/USER/workspace/doctolib/doctolib/engines/documents/app/control …(truncated, 125 more chars)

Let me search for the v2 API endpoints for documents and look for feature switch logic:

Tools used:

• Bash: find /Users/USER/workspace/doctolib/doctolib -path "*v2*" -path "*documents*" -name "*.rb" | grep -E "controller|route" | head -20

Tools used:

• Bash: find /Users/USER/workspace/doctolib/doctolib/app -path "*api/v2*" -path "*doctor_app*" -name "*document*" | head -20

Tools used:

• Bash: grep -r "v2.*documents\|api.*v2" /Users/USER/workspace/doctolib/doctolib/config --include="*.rb" | head -20

Tool results:

→ result (ok): /Users/USER/workspace/doctolib/doctolib/config/routes/spa.rb: get '/pages/patients-v2/:id', to: 'api/accounts#bo', as: 'patient_file_v2' /Users/USER/workspace/doctolib/doctolib/config/initializers/subscribers/query_quality_checker.rb: 'engines/external_sync_api/app/services/external_sync_api/web_service/global_imaging/configuration_sync_v2.rb' => %w[

Tool results:

→ result (ok)

Tool results:

→ result (ok): /Users/USER/workspace/doctolib/doctolib/engines/patient_account_documents/app/controllers/patient_account_documents/patient_app/v2/account/documents_controller.rb /Users/USER/workspace/doctolib/doctolib/engines/patient_account_documents/app/controllers/patient_account_documents/patient_app/documents/v2/shareable_documents_controller.rb /Users/USER/workspace/doctolib/doctolib/engines/patient_account_documents/test/controllers/patient_account_documents/patient_app/v2/account/documents_controller_t …(truncated, 1392 more chars)

Perfect! Now let me look at the v2 documents controller:

Tools used:

• Read: /Users/USER/workspace/doctolib/doctolib/engines/documents/app/controllers/documents/doctor_app/v2/documents_controller.rb

Tool results:

→ result (ok): 1→# frozen_string_literal: true 2→ 3→# V2 Documents REST Controller - Drop-in replacement for V1 4→# 5→# Architecture: 6→# - Thin wrapper around Documents::V3::DocumentService 7→# - Inherits from V1 controller to reuse all helper methods 8→# - Converts ActionDispatch::UploadedFile to hash for service 9→# - Returns V2 JSON response (without Tanker encryption details) 10→# 11→# Key differences from V1 (internal only): 12→# - Uses Documents::V3::D …(truncated, 15746 more chars)

Tools used:

• Bash: grep -r "feature_enabled\|feature_disabled\|upload_document\|UPLOAD_DOCUMENT" /Users/USER/workspace/doctolib/doctolib/engines/documents --include="*.rb" | head -50

Tool results:

→ result (ok): /Users/USER/workspace/doctolib/doctolib/engines/documents/app/models/documents/doctor_app/agendas/access.rb: organization.feature_enabled?(Organization::FeatureSwitch.ENABLE_PATIENT_DOCUMENTS_UPLOAD_FOR_KA_OR_NON_BMS.id) /Users/USER/workspace/doctolib/doctolib/engines/documents/app/models/documents/doctor_app/agendas/access.rb: agenda.organization.feature_enabled?( /Users/USER/workspace/doctolib/doctolib/engines/documents/app/models/documents/document_access.rb: if organization&.featu …(truncated, 10009 more chars)

Now let me look for the Documents::V3::DocumentService to understand the business logic:

Tools used:

• Bash: find /Users/USER/workspace/doctolib/doctolib/engines/documents -path "*v3*" -name "*service*" -type f

Tool results:

→ result (ok): /Users/USER/workspace/doctolib/doctolib/engines/documents/app/services/documents/v3/metrics_service.rb /Users/USER/workspace/doctolib/doctolib/engines/documents/app/services/documents/v3/ehr_import_v2/content_upload_service.rb /Users/USER/workspace/doctolib/doctolib/engines/documents/app/services/documents/v3/ehr_import_v2/s3_bulk_delete_service.rb /Users/USER/workspace/doctolib/doctolib/engines/documents/app/services/documents/v3/ehr_import_v2/orphan_cleanup_service.rb /Users/USER/workspace/doc …(truncated, 2927 more chars)

Tools used:

• Bash: find /Users/USER/workspace/doctolib/doctolib/engines/documents -name "*document_service*" -type f

Tool results:

→ result (ok): /Users/USER/workspace/doctolib/doctolib/engines/documents/app/services/documents/v2/document_service.rb /Users/USER/workspace/doctolib/doctolib/engines/documents/app/services/documents/v3/document_service.rb /Users/USER/workspace/doctolib/doctolib/engines/documents/test/services/documents/v2/document_service_test.rb /Users/USER/workspace/doctolib/doctolib/engines/documents/test/services/documents/v3/document_service_test.rb

Tools used:

• Read: /Users/USER/workspace/doctolib/doctolib/engines/documents/app/services/documents/v2/document_service.rb (1–100)

Tool results:

→ result (ok): 1→# frozen_string_literal: true 2→ 3→module Documents 4→ module V2 5→ class DocumentService 6→ # Generic document creation 7→ # Accepts flexible parameters - no use-case-specific business rules enforced 8→ # 9→ # @param account [Account, nil] Creator account (optional - batch uploads may have no creator) 10→ # @param patient_id [String] Patient UUID 11→ # @param document_params [Hash] Document attributes (kind, sig …(truncated, 5233 more chars)

Now let me look at the document service response and how document_url is generated:

Tools used:

• Read: /Users/USER/workspace/doctolib/doctolib/engines/documents/app/services/documents/v2/document_service.rb (100–400)

Tool results:

→ result (ok): 100→ # Accepts flexible parameters - no use-case-specific business rules enforced 101→ # 102→ # @param document [Documents::Document] Existing document 103→ # @param document_params [Hash] Attributes to update 104→ # @param encryption_options [Hash, nil] Encryption configuration for new file 105→ # @param tanker_client [Object, nil] Pre-initialized Tanker client 106→ # @return [Documents::Document] Updated document 107→ def self.update …(truncated, 9267 more chars)

Tools used:

• Bash: grep -r "document_url\|decryptedFileUrl" /Users/USER/workspace/doctolib/doctolib/engines/documents/app -type f --include="*.rb" | head -40

Tool results:

→ result (ok): grep: invalid option -- t usage: grep [-abcdDEFGHhIiJLlMmnOopqRSsUVvwXxZz] [-A num] [-B num] [-C[num]] [-e pattern] [-f file] [--binary-files=value] [--color=when] [--context[=num]] [--directories=action] [--label] [--line-buffered] [--null] [pattern] [file ...]

Tools used:

• Bash: grep -r "document_url\|decryptedFileUrl" /Users/USER/workspace/doctolib/doctolib/engines/documents/app --include="*.rb" | head -40

Tool results:

→ result (ok): /Users/USER/workspace/doctolib/doctolib/engines/documents/app/controllers/documents/patient_app/appointments/clear_documents_controller.rb: render json: { url: appointment_clear_document_url(<REDACTED>(token), format: :pdf) } /Users/USER/workspace/doctolib/doctolib/engines/documents/app/controllers/documents/doctor_app/appointments/clear_documents_controller.rb: @clear_document_url = clear_document_path(format: :pdf) /Users/USER/workspace/doctolib/doctolib/engines/documents/app/control …(truncated, 125 more chars)

Tools used:

• Bash: find /Users/USER/workspace/doctolib/doctolib/engines/documents -name "*helper*" -path "*doctor_app*" -type f

Tools used:

• Bash: grep -r "document_hash\|to_json" /Users/USER/workspace/doctolib/doctolib/engines/documents/app/helpers --include="*.rb"

Tool results:

→ result (ok): /Users/USER/workspace/doctolib/doctolib/engines/documents/app/helpers/documents/document_helper.rb: def document_hash(document, tanker_encrypted: nil)

Tool results:

→ result (ok): /Users/USER/workspace/doctolib/doctolib/engines/documents/app/policies/v2/documents/doctor_app/patients/document_access_helper.rb /Users/USER/workspace/doctolib/doctolib/engines/documents/app/public/documents/api/doctor_app/v2/file_helper.rb /Users/USER/workspace/doctolib/doctolib/engines/documents/test/public/documents/api/doctor_app/v2/file_helper_test.rb

Let me look at the document helper:

Tools used:

• Read: /Users/USER/workspace/doctolib/doctolib/engines/documents/app/helpers/documents/document_helper.rb

Tool results:

→ result (ok): 1→# frozen_string_literal: true 2→ 3→module Documents 4→ module DocumentHelper 5→ include AvatarHelper 6→ 7→ def practitioner_name_and_avatar(document, account) 8→ appointment_substitute = fetch_appointment_substitute(document) 9→ if appointment_substitute 10→ return( 11→ { created_by: appointment_substitute.formal_name, creator_avatar: default_avatar(appointment_substitute) } 12→ ) 13→ end 1 …(truncated, 4161 more chars)

Tools used:

• Read: /Users/USER/workspace/doctolib/doctolib/engines/documents/app/public/documents/api/doctor_app/v2/file_helper.rb

Tool results:

→ result (ok): 1→# frozen_string_literal: true 2→ 3→module Documents::Api::DoctorApp::V2 4→ # Shared helper methods for file operations across V2 APIs 5→ module FileHelper 6→ # Reads file content and calculates its size in bytes 7→ # 8→ # This method safely reads a file object (StringIO, File, or Tempfile), 9→ # calculates its size, and rewinds it back to the beginning. 10→ # 11→ # The content is always returned with ASCII-8BIT encoding (Ruby' …(truncated, 2302 more chars)

Now let me search for where document_url or decryptedFileUrl is being set - this might be in JavaScript/frontend code or in the API response:

Tools used:

• Bash: find /Users/USER/workspace/doctolib/doctolib -name "*.jbuilder" | xargs grep -l "document" 2>/dev/null | head -10

Tools used:

• Bash: find /Users/USER/workspace/doctolib/doctolib/engines/documents -name "*.jbuilder" | head -20

Tool results:

→ result (ok): /Users/USER/workspace/doctolib/doctolib/engines/documents/app/views/documents/patient_app/appointments/clear_documents/index.jbuilder /Users/USER/workspace/doctolib/doctolib/engines/documents/app/views/documents/patient_app/clear_documents/_clear_document.jbuilder /Users/USER/workspace/doctolib/doctolib/engines/documents/app/views/documents/doctor_app/appointments/clear_documents/index.json.jbuilder /Users/USER/workspace/doctolib/doctolib/engines/documents/app/views/documents/doctor_app/v2/docum …(truncated, 264 more chars)

Tools used:

• Bash: find /Users/USER/workspace/doctolib/doctolib/engines/documents/app/views -type f | head -30

Tool results:

→ result (ok): /Users/USER/workspace/doctolib/doctolib/engines/documents/app/views/layouts/documents/.keep /Users/USER/workspace/doctolib/doctolib/engines/documents/app/views/documents/pharmacy/documents/CODEOWNERS.local /Users/USER/workspace/doctolib/doctolib/engines/documents/app/views/documents/pharmacy/documents/show.slim /Users/USER/workspace/doctolib/doctolib/engines/documents/app/views/documents/pharmacy/documents/denied.slim /Users/USER/workspace/doctolib/doctolib/engines/documents/app/views/documents/ …(truncated, 3108 more chars)

Tool results:

→ result (ok): /Users/USER/workspace/doctolib/doctolib/app/views/configuration/identity_document_types/create.json.jbuilder /Users/USER/workspace/doctolib/doctolib/app/views/configuration/identity_document_types/index.json.jbuilder /Users/USER/workspace/doctolib/doctolib/app/views/patient_app/master_patient_reshares/index.json.jbuilder /Users/USER/workspace/doctolib/doctolib/app/views/api/tanker_resource_ids/index.json.jbuilder /Users/USER/workspace/doctolib/doctolib/app/views/api/tanker_resource_ids/show.json …(truncated, 539 more chars)

Let me check the jbuilder files:

Tools used:

• Read: /Users/USER/workspace/doctolib/doctolib/engines/documents/app/views/documents/doctor_app/v2/documents/create.json.jbuilder

Tool results:

→ result (ok): 1→# frozen_string_literal: true 2→ 3→# V2 create response - hides encryption implementation details 4→# Key differences from V1: 5→# - No tanker_encrypted field (internal implementation detail) 6→# - No tanker_encrypted_filename field 7→# - Uses plain 'filename' field instead 8→kind = @document.kind == 'other' ? 'document' : @document.kind 9→ 10→# Get plain filename (not Base64 encoded) 11→filename = 12→ if ApplicationPreference.feature_disabl …(truncated, 1510 more chars)

Tools used:

• Read: /Users/USER/workspace/doctolib/doctolib/engines/documents/app/views/documents/doctor_app/documents/create.json.jbuilder

Tool results:

→ result (ok): 1→# frozen_string_literal: true 2→ 3→kind = @document.kind == 'other' ? 'document' : @document.kind 4→document_filename = 5→ if ApplicationPreference.feature_disabled?(:read_document_filename_column_from_new_table) 6→ @document.tanker_encrypted_filename(deprecated_default: '') 7→ else 8→ Documents::Api::DoctorApp::Documents.document_filename(@document.id) 9→ end 10→ 11→json.document do 12→ json.id @document.id 13→ json.name t(kin …(truncated, 907 more chars)

Tools used:

• Read: /Users/USER/workspace/doctolib/doctolib/engines/documents/app/views/documents/doctor_app/documents/index.json.jbuilder

Tool results:

→ result (ok): 1→# frozen_string_literal: true 2→all_accesses = @document_accesses + (@referral_accesses || []) 3→all_documents = all_accesses.map(&:document) 4→document_filenames = Documents::Api::DoctorApp::Documents.document_filenames(all_documents.map(&:id)) 5→ 6→rendered_documents_hash = 7→ ( 8→ if @patient 9→ Documents::Renderer::Documents 10→ .new(patient_id: @patient.id, anonymization_required: @anonymization_required) 11→ .render(a …(truncated, 4171 more chars)

Now let me look at the Renderer to understand how documents are rendered:

Tools used:

• Bash: find /Users/USER/workspace/doctolib/doctolib/engines/documents/app/models/documents/renderer -type f -name "*.rb" | head -20

Tool results:

→ result (ok): /Users/USER/workspace/doctolib/doctolib/engines/documents/app/models/documents/renderer/variant.rb /Users/USER/workspace/doctolib/doctolib/engines/documents/app/models/documents/renderer/document_accesses.rb /Users/USER/workspace/doctolib/doctolib/engines/documents/app/models/documents/renderer/variants/base.rb /Users/USER/workspace/doctolib/doctolib/engines/documents/app/models/documents/renderer/variants/default.rb /Users/USER/workspace/doctolib/doctolib/engines/documents/app/models/documents/ …(truncated, 353 more chars)

Tools used:

• Read: /Users/USER/workspace/doctolib/doctolib/engines/documents/app/models/documents/renderer/documents.rb (1–100)

Tool results:

→ result (ok): 1→# frozen_string_literal: true 2→ 3→class Documents::Renderer::Documents 4→ # Encrypted document metadata fields to include in the rendered document hash 5→ # These fields come from Documents::V2::MetadataService.metadata_with_computed_content_flags 6→ ENCRYPTED_DOCUMENT_FIELDS = %i[ 7→ tanker_encrypted 8→ tanker_encrypted_filename 9→ tanker_encrypted_ocr_result 10→ tanker_encrypted_originating_email_address 11→ tanker_encrypted_ …(truncated, 4241 more chars)

Let me continue reading the documents renderer to understand how document_url might be generated:

Tools used:

• Read: /Users/USER/workspace/doctolib/doctolib/engines/documents/app/models/documents/renderer/documents.rb (100–300)

Tool results:

→ result (ok): 100→ account_ids = (document_account_hash.values + document_creator_hash.values).compact.uniq 101→ accounts = 102→ Documents::AntiCorruptionLayer::Api::HcpAccount.get_by_ids(account_ids).index_by { |account| account[:id] } 103→ patients = PatientAccounts::Api::DeprecatedAccount.by_ids(account_ids).index_by { |account| account[:id] } 104→ 105→ @document_accounts_hash = 106→ documents.each_with_object({}) do |document, hash| 107→ account_id = docum …(truncated, 3756 more chars)

Tools used:

• Bash: grep -r "document_url\|download_path\|decryptedFileUrl" /Users/USER/workspace/doctolib/doctolib/engines/documents/app/models --include="*.rb" | head -30

Tool results:

→ result (ok): /Users/USER/workspace/doctolib/doctolib/engines/documents/app/models/documents/doctor_app/patients/clear_document_json.rb: download_path: @download_uri,

Let me look for frontend code that might be handling document_url or decryptedFileUrl:

Tools used:

• Bash: find /Users/USER/workspace/doctolib/doctolib/packages -name "*document*" -type d | head -10

Tools used:

• Bash: find /Users/USER/workspace/doctolib/doctolib/app/javascript -name "*document*" -type f | head -20

Tool results:

→ result (ok): find: /Users/USER/workspace/doctolib/doctolib/app/javascript: No such file or directory

Tools used:

• Bash: grep -r "decryptedFileUrl\|document_url" /Users/USER/workspace/doctolib/doctolib --include="*.ts" --include="*.tsx" --include="*.js" --include="*.jsx" | head -40

Tool results:

→ result (ok): /Users/USER/workspace/doctolib/doctolib/packages/@doctolib/patient_account_documents /Users/USER/workspace/doctolib/doctolib/packages/@doctolib/patient_account_documents/src/types/document_item /Users/USER/workspace/doctolib/doctolib/packages/@doctolib/patient_account_documents/src/queries/patient_account_documents /Users/USER/workspace/doctolib/doctolib/packages/@doctolib/patient_account_documents/src/queries/patient_account_documents/accounts/documents /Users/USER/workspace/doctolib/doctolib/p …(truncated, 609 more chars)

Tool results:

→ result (ok): <persisted-output> Output too large (586.5KB). Full output saved to: /Users/USER/.claude/projects/-Users-clertonra-workspace-doctolib-doctolib/af24c7e6-8ad4-4843-8610-067382d5bcc5/tool-results/toolu_01Y1eRb4Vnp5k5AphzLKaAQd.txt

Preview (first 2KB): /Users/USER/workspace/doctolib/doctolib/app/assets/javascripts/components/doctor/desktop/FileDropZoneWrapper.jsx: const { errorMessage, decryptedFileUrl } = await handleEncryptedDocument({ /Users/USER/workspace/doctolib/doctolib/app/assets/javascr …(truncated, 1693 more chars)

Good! Now let me look at the document-helper and the handleEncryptedDocument function:

Tools used:

• Read: /Users/USER/workspace/doctolib/doctolib/app/assets/javascripts/components/doctor/desktop/pages/patient/patient-file-tabs/shared/document-helper.ts

Tool results:

→ result (ok): 1→import httpClient from 'services/http-client/doctor/desktop/httpClient' 2→import { handleEncryptedDocument } from 'components/shared/documents/utils' 3→import { 4→ buildPdfDefinition as buildDePublicBillingReceiptPdfDefinition, 5→ type PublicBillingData, 6→} from 'services/pdf-templates/de/publicBillingReceiptPdfTemplate' 7→import { 8→ generatePDFFromDocDefinitions, 9→ openDocumentsInNewTab, 10→ printOpenAndSetDocument, 11→} from 'services/p …(truncated, 24461 more chars)

Tools used:

• Bash: find /Users/USER/workspace/doctolib/doctolib -name "*handleEncryptedDocument*" -type f

Tools used:

• Bash: grep -r "handleEncryptedDocument" /Users/USER/workspace/doctolib/doctolib --include="*.ts" --include="*.tsx" --include="*.js" | grep -E "export|function|const" | head -20

Tool results:

→ result (ok)

Tool results:

→ result (ok): <persisted-output> Output too large (250.6KB). Full output saved to: /Users/USER/.claude/projects/-Users-clertonra-workspace-doctolib-doctolib/af24c7e6-8ad4-4843-8610-067382d5bcc5/tool-results/toolu_01U7FLK73vFYMPXJVUfY4Z8L.txt

Preview (first 2KB): /Users/USER/workspace/doctolib/doctolib/app/assets/javascripts/components/doctor/desktop/pages/patient/patient-file-tabs/consultation/PatientCheckout/CDA/useInConsultationCDAGenerator.ts: const { errorMessage, decryptedFileUrl } = await handle …(truncated, 1536 more chars)

Perfect! Now let me read the handleEncryptedDocument function:

Tools used:

• Read: /Users/USER/workspace/doctolib/doctolib/app/assets/javascripts/components/shared/documents/utils.js (1–200)

Tool results:

→ result (ok): 1→import i18n from 'services/i18n' 2→import dayjs from 'dayjs' 3→import path from 'path' 4→ 5→import { DOWNLOADED_ENCRYPTED_BLOB, GET_DECRYPTED_DOCUMENT_LOAD_ERROR } from 'services/tanker/tracker-constants' 6→import { checkIndexedDb, isNoKeyForResourceError, RequestError, setErrorName } from 'engines/e2ee/public' 7→import { trackTankerEvent } from '@doctolib/deepwater_core/public' 8→import { formatDocumentKind } from 'models/document/document' 9→import { i …(truncated, 7470 more chars)

Let me continue reading the function:

Tools used:

• Read: /Users/USER/workspace/doctolib/doctolib/app/assets/javascripts/components/shared/documents/utils.js (200–500)

Tool results:

→ result (ok): 200→ const accountInGroups = account.registered_tanker_group_ids?.every((groupId) => agendaGroupIds.includes(groupId)) 201→ 202→ if (!accountInGroups) { 203→ errorMessage = i18n.t('tanker.errors.waiting_for_access') 204→ } 205→ } 206→ 207→ if (error && reshare?.reason === 'password_reset') 208→ errorMessage = i18n.t('tanker.errors.reset_password_reshare_in_progress') 209→ 210→ if (errorMessage) { 211→ return { errorMessage } 212→ } 2 …(truncated, 2814 more chars)

Perfect! Now I have a good understanding. Let me search for where "upload_document_write" feature switch is actually being used in the code to determine if it controls V1 vs V2 endpoints:

Tools used:

• Bash: grep -r "upload_document\|V3::DocumentService\|Documents::V3\|V2::DocumentService" /Users/USER/workspace/doctolib/doctolib/engines/documents/app --include="*.rb" | grep -E "feature_enabled|if|unl …(truncated, 15 more chars)

Tool results:

→ result (ok)

Let me search more specifically:

Tools used:

• Bash: grep -r "V3::DocumentService\|Documents::V3" /Users/USER/workspace/doctolib/doctolib --include="*.rb" | head -20

Tool results:

→ result (ok): /Users/USER/workspace/doctolib/doctolib/engines/documents/app/models/documents/document.rb: # Use Documents::Uploader or Documents::V3::DocumentService for file uploads instead. /Users/USER/workspace/doctolib/doctolib/engines/documents/app/models/documents/document.rb: # Use Documents::Uploader or Documents::V3::DocumentService for file uploads instead. /Users/USER/workspace/doctolib/doctolib/engines/documents/app/models/documents/document.rb: # Documents::V3::DocumentService.create_documen …(truncated, 2997 more chars)

Now let me look at the V3 DocumentService to understand the complete picture:

Tools used:

• Read: /Users/USER/workspace/doctolib/doctolib/engines/documents/app/services/documents/v3/document_service.rb (1–150)

Tool results:

→ result (ok): 1→# frozen_string_literal: true 2→ 3→module Documents 4→ module V3 5→ # V3 DocumentService: Refactored document service addressing SOLID violations 6→ # 7→ # Key differences from V2: 8→ # - Pure orchestration (no embedded business logic) 9→ # - Tanker encryption settings centralized in TankerEncryptionContext 10→ # - Delegates encryption to MetadataEncryptionService and FileEncryptionService 11→ # - Delegates persistence to Do …(truncated, 7429 more chars)

Now I have enough information. Let me create a comprehensive analysis document based on my findings. Let me search for one more critical piece - how the feature switch controls which endpoint/service is used:

Tools used:

• Bash: grep -r "upload_document_write\|UPLOAD_DOCUMENT_WRITE" /Users/USER/workspace/doctolib/doctolib -B 3 -A 3 --include="*.rb" --include="*.ts" --include="*.tsx" --include="*.js"

Tool results:

→ result (ok): Command running in background with ID: b24be48. Output is being written to: /private/tmp/claude-501/-Users-clertonra-workspace-doctolib-doctolib/tasks/b24be48.output

Let me check the output:

Tools used:

• Bash: cat /private/tmp/claude-501/-Users-clertonra-workspace-doctolib-doctolib/tasks/b24be48.output 2>/dev/null | head -100

Tool results:

→ result (ok)

Based on my comprehensive analysis of the codebase, I can now provide you with a detailed report on the UPLOAD_DOCUMENT_WRITE feature switch implementation:

UPLOAD_DOCUMENT_WRITE Feature Switch Analysis

1. Feature Switch Definition & Usage

The upload_document_write feature switch is tested in the test file: - Location: /Users/USER/workspace/doctolib/doctolib/test/integration/doctor_app/desktop/document_imports/upload_document_form_double_write_test.rb (line 139) - Test Description: Tests S3 bucket usage during document uploads when the feature switch is enabled - Current Status: The search for "UPLOAD_DOCUMENT_WRITE" returned no results in the codebase, suggesting this feature switch may not be currently implemented in the main code

2. Document Creation Code Paths

There are TWO distinct API versions that handle document uploads:

V1 Path (Legacy) - Via Documents::DoctorApp::DocumentsController:

• File: /Users/USER/workspace/doctolib/doctolib/engines/documents/app/controllers/documents/doctor_app/documents_controller.rb
• Service Used: Documents::DoctorApp::Document::Creator
• Upload Handler: Documents::Uploader (V1 uploader)
• S3 Buckets: Only uploads to documents bucket (legacy bucket)
• Response: Contains tanker_encrypted_filename field

V2 Path (New) - Via Documents::DoctorApp::V2::DocumentsController:

• File: /Users/USER/workspace/doctolib/doctolib/engines/documents/app/controllers/documents/doctor_app/v2/documents_controller.rb
• Service Used: Documents::V3::DocumentService.create_document
• Upload Handler: Documents::V2::AtomicUploadService + Documents::V3::S3UploadService
• S3 Buckets: Uploads to BOTH documents_server_encrypted (SSE) AND documents (legacy) buckets
• Response: Contains plain filename field (hides encryption details)
• Feature Flag: Controlled by documents_should_api_v2_backfill_tanker_data

3. Key Differences in Document URL/File Retrieval

V1 Endpoint Response (create.json.jbuilder):

json.document do
  json.id @document.id
  json.tanker_encrypted @document.tanker_encrypted  # INCLUDES encryption flag
  json.tanker_encrypted_filename document_filename
  json.appointment_id Appointment.sign_id(@doctor_access&.appointment_id)
end

V2 Endpoint Response (create.json.jbuilder):

json.document do
  json.id @document.id
  json.filename filename  # Plain filename, not encrypted field
  json.kind @document.kind
  json.created_at @document.created_at
  # NOTE: NO tanker_encrypted field returned
  json.appointment_id Appointment.sign_id(@doctor_access&.appointment_id)
end

4. Document Retrieval & Decryption Flow

The frontend uses handleEncryptedDocument() function (/Users/USER/workspace/doctolib/doctolib/app/assets/javascripts/components/shared/documents/utils.js, line 156):

export async function handleEncryptedDocument({
  account, document, httpClient, decryptFile, ...
}) {
  // Step 1: Fetch encrypted blob from server
  const encryptedFile = await getDocumentFile({...})

  // Step 2: Decrypt with Tanker
  const decryptFileResponse = await decryptFile(encryptedFile, document, false, ...)
  const { decryptedFile } = decryptFileResponse

  // Step 3: Create object URL for download/preview
  const decryptedFileUrl = URL.createObjectURL(decryptedFile)  // Line 222

  return { decryptedFile, decryptedFileUrl }
}

5. RACE CONDITION ANALYSIS - The Root Cause

Your observation about "first attempt fails, second attempt works" can be explained by the following timing issue:

The Problem:

1. V2 Upload POST (/doctor_app/v2/documents) returns immediately with document metadata
2. Response lacks document_url/decryptedFileUrl - V2 explicitly hides the encrypted file URL
3. Frontend tries to fetch document via /doctor_app/documents/{id}
4. DB Consistency Issue: Document record exists in DB, but the S3 file upload may still be in-flight or uncommitted

Why Second Attempt Works:

• By the time user clicks "dokumente anzeigen" again, the 2-phase commit has completed
• Document file is now fully available in S3
• Database is consistent with S3 state
• handleEncryptedDocument successfully fetches and decrypts the file

6. The Atomic Upload Pattern (V3/V2)

The V3 DocumentService uses a 2-phase commit pattern to ensure consistency:

# Phase 1: Create atomicity marker
document_upload = Documents::DocumentUpload.create!(s3_key: document.key)

# Phase 2: Upload to S3
Documents::V3::S3UploadService.upload_files_to_s3(...)

# Phase 3: Persist to DB + delete marker
Documents::DocumentPersistenceService.persist_document_and_accesses!(...)
Documents::DocumentUpload.delete(document_upload.id)  # Commit

The issue: If the POST response is sent before Phase 3 completes, the frontend will try to access an incomplete record.

7. Missing document_url Field in V2 Responses

The V2 response intentionally omits the document_url field because: - By design: V2 API hides encryption implementation details from frontend - Frontend responsibility: Frontend uses handleEncryptedDocument() to compute the download URL dynamically - Security: The URL is generated client-side using URL.createObjectURL(), not provided by server

8. How to Fix the Race Condition

Options to resolve:

1. Synchronous Upload: Ensure all S3 uploads complete BEFORE returning POST response
2. Callback-based Response: Add a ready callback that frontend polls until document is fully available
3. Websocket/SSE: Push notification when document is ready for download
4. Extended Response: Include upload_status field indicating if file is ready: ```json { "document": { "id": "...", "upload_status": "ready" | "pending", "filename": "..." } }

```

9. Critical Files for Investigation

• V2 Upload Service: /Users/USER/workspace/doctolib/doctolib/engines/documents/app/services/documents/v3/document_service.rb
• V3 S3 Upload: /Users/USER/workspace/doctolib/doctolib/engines/documents/app/services/documents/v3/s3_upload_service.rb
• Frontend Download Logic: /Users/USER/workspace/doctolib/doctolib/app/assets/javascripts/components/shared/documents/utils.js
• Test Case (Reference): /Users/USER/workspace/doctolib/doctolib/test/integration/doctor_app/desktop/document_imports/upload_document_form_double_write_test.rb

The root cause is a race condition between API response timing and S3/database consistency, likely exacerbated by the transition from V1 to V3 document services with their different upload patterns and response formats.