{
  "id": "doctolib-doctolib/glimmering-imagining-sparrow-subagent-a8c6a42",
  "slug": "glimmering-imagining-sparrow-subagent-a8c6a42",
  "title": "Session: glimmering-imagining-sparrow-subagent-a8c6a42 — 2026-01-28",
  "type": "source",
  "project": "doctolib-doctolib",
  "date": "2026-01-28",
  "started": "2026-01-28T11:59:41.421000+00:00",
  "ended": "2026-01-28T12:03:15.847000+00:00",
  "model": "claude-haiku-4-5-20251001",
  "cwd": "/Users/USER/workspace/doctolib/doctolib",
  "git_branch": "master",
  "permission_mode": "",
  "user_messages": 1,
  "tool_calls": 44,
  "tools_used": [
    "Grep",
    "Glob",
    "Bash",
    "Read"
  ],
  "is_subagent": true,
  "wikilinks_out": [],
  "body_text": "Project: doctolib-doctolib · Branch: master · Mode:  · Model: claude-haiku-4-5-20251001\n\nStats: 1 user messages, 44 tool calls, tools used: Grep, Glob, Bash, Read.\n\nConversation\n\nTurn 1 — User\n\nI need to understand the document viewing/preview flow to diagnose why \"Failed to load PDF file\" occurs immediately after document upload but works after browser refresh.\n\nFind:\n1. The component that renders the document preview/viewer (the one showing \"Failed to load PDF file\")\n2. What queries are used when clicking \"dokument anzeigen\" to view a document\n3. How presigned URLs are generated and cached for document viewing\n4. The flow from clicking view button to loading the PDF\n5. What error handling exists and what could cause \"Failed to load PDF file\" message\n6. Whether there's a timing issue with S3 upload completion and presigned URL generation\n\nThe user uploaded via the V2 endpoint with UPLOAD_DOCUMENT_WRITE feature switch enabled. The document appears in the list but fails to view until browser refresh.\n\nTurn 1 — Assistant\n\nI'll help you diagnose the document viewing/preview flow. Let me start by searching for the components and logic related to document preview, PDF viewer, and presigned URL generation.\n\nTools used:\n\n- Grep: Failed to load PDF file\n\nTools used:\n\n- Glob: /documentviewer\n\nTools used:\n\n- Glob: /pdfviewer\n\nTools used:\n\n- Bash: find /Users/USER/workspace/doctolib/doctolib -type f \\( -name \"document\" -o -name \"preview\" \\) | grep -E \"\\.(tsx?|jsx?)$\" | head -20\n\nTool results:\n\n  → result (ok): /Users/USER/workspace/doctolib/doctolib/engines/patient_account_documents/app/services/patient_account_documents/document_viewer.rb\n/Users/USER/workspace/doctolib/doctolib/engines/patient_account_documents/test/test_utils/page_objects/patient_account_documents/desktop/document_viewer_object.rb\n/Users/USER/workspace/doctolib/doctolib/public/webpack/js/packages_doctolib_unified_document_viewer_public_UnifiedDocumentsViewerModal_ts.chunk.js\n/Users/USER/workspace/doctolib/doctolib/engines/patient_ac\n…(truncated, 79 more chars)\n\nTool results:\n\n  → result (ok): /Users/USER/workspace/doctolib/doctolib/node_modules/pdfjs-dist/legacy/web/pdf_viewer.css\n/Users/USER/workspace/doctolib/doctolib/node_modules/pdfjs-dist/web/pdf_viewer.css\n/Users/USER/workspace/doctolib/doctolib/node_modules/pdfjs-dist/legacy/web/pdf_viewer.js\n/Users/USER/workspace/doctolib/doctolib/node_modules/pdfjs-dist/web/pdf_viewer.js\n/Users/USER/workspace/doctolib/doctolib/node_modules/pdfjs-dist/legacy/web/pdf_viewer.js.map\n/Users/USER/workspace/doctolib/doctolib/node_modules/pdfjs-dist\n…(truncated, 683 more chars)\n\nTool results:\n\n  → result (ok): No files found\n\nTool results:\n\n  → result (ok): /Users/USER/workspace/doctolib/doctolib/app/assets/javascripts/entrypoints-content/telehealth-document.jsx\n/Users/USER/workspace/doctolib/doctolib/app/assets/javascripts/entrypoints-content/documents.js\n/Users/USER/workspace/doctolib/doctolib/app/assets/javascripts/types/doctor/api/test-helpers/fixture-builders/documentCustomizationFixtureBuilder.ts\n/Users/USER/workspace/doctolib/doctolib/app/assets/javascripts/types/doctor/api/test-helpers/fixture-builders/documentFixtureBuilder.ts\n/Users/USER/\n…(truncated, 2018 more chars)\n\nLet me search for the unified document viewer and related components:\n\nTools used:\n\n- Glob: /UnifiedDocumentsViewer\n\nTools used:\n\n- Glob: /document-viewer\n\nTools used:\n\n- Grep: dokument anzeigen\n\nTools used:\n\n- Bash: find /Users/USER/workspace/doctolib/doctolib/packages -type f -name \"viewer\" | head -20\n\nTool results:\n\n  → result (ok)\n\nTool results:\n\n  → result (ok): No files found\n\nTool results:\n\n  → result (ok): /Users/USER/workspace/doctolib/doctolib/packages/@doctolib/unified_document_viewer/public/UnifiedDocumentsViewerModal.ts\n/Users/USER/workspace/doctolib/doctolib/packages/@doctolib/unified_document_viewer/src/unified/viewer-modal/UnifiedDocumentsViewerModal.tsx\n/Users/USER/workspace/doctolib/doctolib/packages/@doctolib/unified_document_viewer/src/unified/viewer-modal/internal/types/UnifiedDocumentsViewer.ts\n/Users/USER/workspace/doctolib/doctolib/packages/@doctolib/unified_document_viewer/src/uni\n…(truncated, 54 more chars)\n\nTool results:\n\n  → result (ok): No files found\n\nNow let me examine the key files I found:\n\nTools used:\n\n- Read: /Users/USER/workspace/doctolib/doctolib/packages/@doctolib/unified_document_viewer/src/unified/viewer-modal/UnifiedDocumentsViewerModal.tsx\n\nTools used:\n\n- Read: /Users/USER/workspace/doctolib/doctolib/packages/@doctolib/unified_document_viewer/src/unified/viewer-modal/internal/types/UnifiedDocumentsViewer.ts\n\nTools used:\n\n- Glob: /patient_account_documents//.ts\n\nTool results:\n\n  → result (ok): 1→import { type FC, type ReactNode, useContext, useEffect, useRef, useState } from 'react'\n     2→import { v4 as uuidv4 } from 'uuid'\n     3→import { AccountContext } from '@doctolib/shared_context'\n     4→import { sendMonitoringEvent } from 'monolith_DEPRECATED/services/monitoring'\n     5→import { capturePro } from '@doctolib/product-event-wrapper'\n     6→import { prmDocumentViewerOpened } from '@doctolib/product-event-wrapper/resources/TIGAH'\n     7→import lazyLoad from 'monolith_DEPRECATED/co\n…(truncated, 13933 more chars)\n\nTool results:\n\n  → result (ok): 1→export interface HighlightedDocument {\n     2→  document?: DocType\n     3→  decryptedUrl?: string\n     4→}\n     5→\n     6→export interface DocType {\n     7→  id: string\n     8→  shared_by: string\n     9→  filename: string\n    10→  tanker_encrypted_file?: File\n    11→  tanker_encrypted_filename?: string | null\n    12→  // maybe for read/unread\n    13→  viewed_or_downloaded_at?: Date\n    14→}\n    15→\n\n<system-reminder>\nWhenever you read a file, you should consider whether it would be considered \n…(truncated, 242 more chars)\n\nTool results:\n\n  → result (ok): /Users/USER/workspace/doctolib/doctolib/packages/@doctolib/patient_account_documents/public/types/PatientAccountDocumentWithSharings.ts\n/Users/USER/workspace/doctolib/doctolib/packages/@doctolib/patient_account_documents/public/types/DocumentViewer.ts\n/Users/USER/workspace/doctolib/doctolib/packages/@doctolib/patient_account_documents/public/types/DocumentSelectorStep.ts\n/Users/USER/workspace/doctolib/doctolib/packages/@doctolib/patient_account_documents/public/types/CacheManagement.ts\n/Users/US\n…(truncated, 12665 more chars)\n\nNow let me look at the document queries and the patient account documents flow:\n\nTools used:\n\n- Read: /Users/USER/workspace/doctolib/doctolib/packages/@doctolib/patient_account_documents/src/queries/patient_account_documents/accounts/documents.ts\n\nTools used:\n\n- Grep: presigned|signed.url\n\nTools used:\n\n- Glob: /engines/patient_account_documents//.rb\n\nTool results:\n\n  → result (ok): 1→import type { HttpClientType } from 'monolith_DEPRECATED/types/http-client'\n     2→import type PatientAccountDocument from '@doctolib/patient_account_documents/src/types/PatientAccountDocument'\n     3→import { useInfiniteQuery, useMutation, useQuery, useQueryClient } from '@tanstack/react-query-v5'\n     4→import { useContext, useMemo } from 'react'\n     5→import { HttpClientContext } from 'monolith_DEPRECATED/contexts/ReactQueryProvider'\n     6→import useAccount from 'monolith_DEPRECATED/hooks\n…(truncated, 9816 more chars)\n\nTool results:\n\n  → result (ok): Found 26 files\npackages/@doctolib/documents-ui/src/data/queries/documents.ts\npackages/@doctolib/documents-ui/src/data/queries/documents.test.tsx\nengines/ehr/app/assets/javascripts/hooks/doctor/shared/useGenerateBlobFromConsultationItem.ts\npackages/@doctolib/financial_os_fr_billing/src/hooks/doctor/shared/useBilleoHelpers.ts\npackages/@doctolib/financial_os_fr_billing/src/types/billeoTypes.ts\nengines/ehr_imports/app/assets/javascripts/components/doctor/admin/download-buttons/downloadPmsExtract.ts\n\n…(truncated, 1801 more chars)\n\nTool results:\n\n  → result (ok): /Users/USER/workspace/doctolib/doctolib/engines/patient_account_documents/app/controllers/patient_account_documents/application_controller.rb\n/Users/USER/workspace/doctolib/doctolib/engines/patient_account_documents/app/controllers/patient_account_documents/patient_app/account/documents/count_controller.rb\n/Users/USER/workspace/doctolib/doctolib/engines/patient_account_documents/app/controllers/patient_account_documents/patient_app/account/unread_documents_controller.rb\n/Users/USER/workspace/doc\n…(truncated, 14087 more chars)\n\nLet me examine the key backend files and document viewer implementation:\n\nTools used:\n\n- Read: /Users/USER/workspace/doctolib/doctolib/engines/patient_account_documents/app/controllers/patient_account_documents/patient_app/v2/account/documents_controller.rb\n\nTools used:\n\n- Read: /Users/USER/workspace/doctolib/doctolib/engines/patient_account_documents/app/services/patient_account_documents/document_viewer.rb\n\nTools used:\n\n- Glob: /DocumentViewerModal\n\nTool results:\n\n  → result (ok): 1→# frozen_string_literal: true\n     2→\n     3→module PatientAccountDocuments::PatientApp::V2::Account\n     4→  class DocumentsController < ::PatientAccountDocuments::ApplicationController\n     5→    authenticate_with Authentication::Api::Filter::ACCOUNT\n     6→\n     7→    skip_before_action :redirect_partners_to_www\n     8→    before_action :require_email_verification\n     9→    before_action :validate_params!\n    10→\n    11→    DocumentCreatorAccount = PatientAccountDocuments::AntiCorruptionLa\n…(truncated, 3094 more chars)\n\nTool results:\n\n  → result (ok): 1→# frozen_string_literal: true\n     2→\n     3→module PatientAccountDocuments\n     4→  module DocumentViewer\n     5→    class << self\n     6→      # @param [PatientAccountDocuments::Document] patient_account_document\n     7→      def mark_patient_account_document_as_viewed(patient_account_document)\n     8→        patient_account_document.touch(:viewed_at) if patient_account_document.viewed_at.nil?\n     9→        patient_account_document.touch(:downloaded_at) if patient_account_document.downloade\n…(truncated, 644 more chars)\n\nTool results:\n\n  → result (ok): /Users/USER/workspace/doctolib/doctolib/packages/@doctolib/unified_document_viewer/src/unified/viewer-modal/internal/DocumentViewerModal.scss\n/Users/USER/workspace/doctolib/doctolib/app/assets/javascripts/components/doctor/desktop/pages/patient/patient-file-tabs/consultation/TreatmentPlan/ButtonsSection/DocumentViewerModal.tsx\n/Users/USER/workspace/doctolib/doctolib/packages/@doctolib/unified_document_viewer/public/DocumentViewerModal.ts\n/Users/USER/workspace/doctolib/doctolib/packages/@doctolib\n…(truncated, 82 more chars)\n\nNow let me check the DocumentViewerModal component implementation:\n\nTools used:\n\n- Read: /Users/USER/workspace/doctolib/doctolib/packages/@doctolib/unified_document_viewer/src/unified/viewer-modal/internal/DocumentViewerModal.tsx (1–100)\n\nTools used:\n\n- Grep: Failed to load|load.error|pdf.error in /unified_document_viewer/\n\nTool results:\n\n  → result (ok): 1→import type { FC, ReactNode } from 'react'\n     2→import { useId } from 'react'\n     3→import i18n from 'monolith_DEPRECATED/services/i18n'\n     4→import classNames from 'classnames'\n     5→import Modal from '@doctolib/mobile_adapters/public/design-system/Modal'\n     6→import { Heading } from '@doctolib/design-system/Heading'\n     7→import { IconButton } from '@doctolib/design-system/IconButton'\n     8→import ScrollableView from 'monolith_DEPRECATED/components/base/layout/ScrollableView'\n     \n…(truncated, 3740 more chars)\n\nTool results:\n\n  → result (ok): No files found\n\nLet me search for the actual PDF viewer component and error handling:\n\nTools used:\n\n- Bash: grep -r \"Failed to load\" /Users/USER/workspace/doctolib/doctolib --include=\".tsx\" --include=\".ts\" --include=\".jsx\" --include=\".js\" | head -20\n\nTools used:\n\n- Bash: find /Users/USER/workspace/doctolib/doctolib -type f -name \"Document.tsx\" -o -name \"Document.jsx\" -o -name \"Document.ts\" -o -name \"Document.js\" | grep -v node_modules | grep -v \".chunk.js\"\n\nTool results:\n\n  → result (ok): /Users/USER/workspace/doctolib/doctolib/app/assets/javascripts/types/doctor/api/Document.ts\n/Users/USER/workspace/doctolib/doctolib/app/assets/javascripts/components/doctor/desktop/pages/telehealth/steps/Document.jsx\n/Users/USER/workspace/doctolib/doctolib/app/assets/javascripts/components/shared/documents/Document.jsx\n/Users/USER/workspace/doctolib/doctolib/engines/documents/app/assets/javascripts/types/Document.ts\n/Users/USER/workspace/doctolib/doctolib/packages/@doctolib/ehr_rich_texts/src/mo\n…(truncated, 54 more chars)\n\nTool results:\n\n  → result (ok): /Users/USER/workspace/doctolib/doctolib/app/assets/javascripts/components/doctor/desktop/patient-file/PatientFileContainer.tsx:  if (!module || !module.PatientFileRoutes) throw new Error('Failed to load pro-frontend-patient-file module')\n/Users/USER/workspace/doctolib/doctolib/app/assets/javascripts/components/shared/documents/documentScanner.ts:          reject(new Error('Failed to load image: file may be inaccessible or corrupted'))\n/Users/USER/workspace/doctolib/doctolib/app/assets/javascript\n…(truncated, 3804 more chars)\n\nLet me check the Document component that renders the PDF:\n\nTools used:\n\n- Read: /Users/USER/workspace/doctolib/doctolib/app/assets/javascripts/components/shared/documents/Document.jsx\n\nTools used:\n\n- Bash: find /Users/USER/workspace/doctolib/doctolib/packages -type f -name \"PDF\" -o -name \"pdf\" | grep -E \"\\.(tsx?|jsx?)$\" | grep -v node_modules | head -20\n\nTool results:\n\n  → result (ok): 1→import { extractMetadataFromHprimContent, isHprimContent } from 'models/document/hprim'\n     2→import { HprimDisplay } from 'components/shared/documents/HprimDisplay'\n     3→import { getMaxDocumentAgeInYears } from 'monolith_DEPRECATED/hooks/doctor/useOCR/dateDetection'\n     4→import { lazy, Suspense, useContext, useEffect, useState } from 'react'\n     5→import i18n from 'services/i18n'\n     6→import PropTypes from 'prop-types'\n     7→import classNames from 'classnames'\n     8→import { isOnMob\n…(truncated, 21594 more chars)\n\nTool results:\n\n  → result (ok): /Users/USER/workspace/doctolib/doctolib/packages/@doctolib/ehr_paper_forms/src/business/muster2/generatePDF.ts\n/Users/USER/workspace/doctolib/doctolib/packages/@doctolib/ehr_paper_forms/src/business/muster2/generatePDF.test.ts\n/Users/USER/workspace/doctolib/doctolib/packages/@doctolib/ehr_paper_forms/src/business/muster12/generatePDF.ts\n/Users/USER/workspace/doctolib/doctolib/packages/@doctolib/ehr_paper_forms/src/business/muster12/generatePDF.test.ts\n/Users/USER/workspace/doctolib/doctolib/pack\n…(truncated, 1998 more chars)\n\nNow let me check the PdfReader component:\n\nTools used:\n\n- Bash: find /Users/USER/workspace/doctolib/doctolib -path \"/node_modules\" -prune -o -type f -name \"PdfReader\" -print\n\nTools used:\n\n- Read: /Users/USER/workspace/doctolib/doctolib/app/assets/javascripts/components/base/PdfReader.jsx (1–150)\n\nTool results:\n\n  → result (ok): 1→import { PureComponent, useEffect, useMemo, useState, createRef } from 'react'\n     2→import PropTypes from 'prop-types'\n     3→import { Document, Page, pdfjs } from 'react-pdf'\n     4→import { Button } from '@doctolib/design-system/Button'\n     5→import { Alert } from '@doctolib/design-system/Alert'\n     6→import ShowMoreOrLessButton from 'components/shared/documents/ShowMoreOrLessButton'\n     7→import { SpinnerLoader } from '@doctolib/design-system/SpinnerLoader'\n     8→import ZoomableWithAc\n…(truncated, 6163 more chars)\n\nTool results:\n\n  → result (ok): /Users/USER/workspace/doctolib/doctolib/app/assets/javascripts/components/base/PdfReaderError.ts\n/Users/USER/workspace/doctolib/doctolib/app/assets/javascripts/components/base/PdfReader.scss\n/Users/USER/workspace/doctolib/doctolib/app/assets/javascripts/components/base/PdfReader.jsx\n\nLet me continue reading the PdfReader:\n\nTools used:\n\n- Read: /Users/USER/workspace/doctolib/doctolib/app/assets/javascripts/components/base/PdfReader.jsx (150–350)\n\nTools used:\n\n- Read: /Users/USER/workspace/doctolib/doctolib/app/assets/javascripts/components/base/PdfReaderError.ts\n\nTool results:\n\n  → result (ok): 150→  }\n   151→\n   152→  documentRef = createRef()\n   153→\n   154→  debouncedUpdateWindowDimensions = debounce(() => this.updateWindowDimensions(), DEBOUNCE_RESIZE_MS, {\n   155→    maxWait: DEBOUNCE_RESIZE_MAXIMUM_MS,\n   156→  })\n   157→\n   158→  static getDerivedStateFromProps(props, state) {\n   159→    if (state.file !== props.url) return { pdf: null, file: props.url }\n   160→    return state\n   161→  }\n   162→\n   163→  componentDidMount() {\n   164→    this.mounted = true\n   165→    this.setSt\n…(truncated, 8048 more chars)\n\nTool results:\n\n  → result (ok): 1→import { Component, type ReactNode } from 'react'\n     2→\n     3→interface PdfReaderErrorProps {\n     4→  ErrorComponent: ReactNode\n     5→  children: ReactNode\n     6→}\n     7→\n     8→interface PdfReaderErrorState {\n     9→  hasError: boolean\n    10→  ErrorComponent: ReactNode\n    11→}\n    12→\n    13→class PdfReaderError extends Component<PdfReaderErrorProps, PdfReaderErrorState> {\n    14→  // this eslint rule conflicts with @typescript-eslint/member-ordering\n    15→  // eslint-disable-next-l\n…(truncated, 1039 more chars)\n\nNow let me search for where \"Failed to load PDF file\" message comes from:\n\nTools used:\n\n- Bash: grep -r \"Failed to load PDF\\|Fehler beim\\|load.PDF\\|pdf.failed\" /Users/USER/workspace/doctolib/doctolib/packages/@doctolib --include=\".tsx\" --include=\".ts\" --include=\".jsx\" --include=\".js\" \n…(truncated, 33 more chars)\n\nTools used:\n\n- Bash: grep -r \"Fehler beim\\|pdf.error\\|document.error\" /Users/USER/workspace/doctolib/doctolib/packages/@doctolib/unified_document_viewer --include=\".tsx\" --include=\".ts\" --include=\".jsx\"\n\nTool results:\n\n  → result (ok): /Users/USER/workspace/doctolib/doctolib/packages/@doctolib/unified_document_viewer/src/unified/viewer-modal/internal/tracking/unifiedViewerTrackers.ts:      name: 'bms_document_preview_error',\n\nTool results:\n\n  → result (ok): /Users/USER/workspace/doctolib/doctolib/packages/@doctolib/secure_messaging_inbox/src/components/doctor/desktop/shared/MailModal/MailModalBody/testProfiles.test.ts:      expect(result[1].uploadedFile).toBe(pdfFile) // PDF should be unchanged\n/Users/USER/workspace/doctolib/doctolib/packages/@doctolib/secure_messaging_inbox/src/components/doctor/desktop/de/EInsuranceProofModule/EInsuranceProofModule.test.tsx:      // Email loaded but has no XML attachment (only PDF)\n/Users/USER/workspace/doctolib/\n…(truncated, 3987 more chars)\n\nLet me search for the error message more specifically:\n\nTools used:\n\n- Bash: grep -r \"Failed to load\\|Fehler beim Laden\\|pdf.cannot\\|cannot.load\" /Users/USER/workspace/doctolib/doctolib/engines/documents --include=\".tsx\" --include=\".ts\" --include=\".jsx\" --include=\".\n…(truncated, 26 more chars)\n\nTools used:\n\n- Bash: find /Users/USER/workspace/doctolib/doctolib/packages/@doctolib/unified_document_viewer -type f -name \".tsx\" -o -name \".ts\" | xargs grep -l \"error\\|Error\" | head -10\n\nTool results:\n\n  → result (ok): /Users/USER/workspace/doctolib/doctolib/packages/@doctolib/unified_document_viewer/src/unified/viewer-modal/UnifiedDocumentsViewerModal.tsx\n/Users/USER/workspace/doctolib/doctolib/packages/@doctolib/unified_document_viewer/src/unified/viewer-modal/internal/hooks/useDecryptDocument.ts\n/Users/USER/workspace/doctolib/doctolib/packages/@doctolib/unified_document_viewer/src/unified/viewer-modal/internal/UnifiedViewerLeftSideBarModule/modules/DocumentsListModule/DocumentsListModule.tsx\n/Users/USER/wor\n…(truncated, 642 more chars)\n\nTool results:\n\n  → result (ok): /Users/USER/workspace/doctolib/doctolib/engines/documents/app/services/documents/uploader.rb:      # We cannot do it now because some documents without an uploaded S3 file are wrongly reported\n/Users/USER/workspace/doctolib/doctolib/engines/documents/test/controllers/documents/doctor_app/documents_controller_test.rb:    it 'cannot upload a document as a patient on another appointment' do\n\nLet me check the ViewerModal more closely and then the files related to V2 FileManager and file download:\n\nTools used:\n\n- Read: /Users/USER/workspace/doctolib/doctolib/packages/@doctolib/unified_document_viewer/src/unified/viewer-modal/internal/DocumentViewerModal.tsx (100–?)\n\nTools used:\n\n- Read: /Users/USER/workspace/doctolib/doctolib/engines/patient_account_documents/app/services/patient_account_documents/v2/file_manager.rb\n\nTool results:\n\n  → result (ok): 100→          </div>\n   101→        </div>\n   102→      )}\n   103→      <div className=\"dl-document-viewer-body flex dl-full-height\">\n   104→        {leftSideBar && <div className=\"dl-document-viewer-sidebar dl-border-r\">{leftSideBar}</div>}\n   105→        {customViewer || (\n   106→          <>\n   107→            <div className=\"dl-document-viewer\">\n   108→              <div className=\"flex dl-justify-center dl-align-items-center snapshot-black\">\n   109→                {/ TODO: Fix this the nex\n…(truncated, 2985 more chars)\n\nTool results:\n\n  → result (ok): 1→# frozen_string_literal: true\n     2→\n     3→module PatientAccountDocuments::V2\n     4→  module FileManager\n     5→    # Failure types for the upload_file method\n     6→    module UploadFileFailureTypes\n     7→      NO_DATA = :no_data\n     8→      BAD_DATA = :bad_data\n     9→      EMPTY_DATA = :empty_data\n    10→      SAVE_ERROR = :save_error\n    11→      FATAL_ERROR = :fatal_error\n    12→    end\n    13→\n    14→    # Failure Types for the delete_file method\n    15→    module DeleteFileFailureT\n…(truncated, 6467 more chars)\n\nNow let me look for the controller logic that manages document access and checking if files exist in S3:\n\nTools used:\n\n- Bash: find /Users/USER/workspace/doctolib/doctolib/engines/patient_account_documents -name \"upload\" -type f | grep -E \"\\.(rb|ts|tsx)$\"\n\nTools used:\n\n- Grep: UPLOAD_DOCUMENT_WRITE|upload.document in /patient_account_documents/\n\nTool results:\n\n  → result (ok): /Users/USER/workspace/doctolib/doctolib/engines/patient_account_documents/app/services/patient_account_documents/uploader.rb\n/Users/USER/workspace/doctolib/doctolib/engines/patient_account_documents/test/test_utils/helpers/helper/patient_account_documents/upload_product_events.rb\n/Users/USER/workspace/doctolib/doctolib/engines/patient_account_documents/test/integration/patient_account_documents/desktop/appointment_booking_funnel/confirmed_appointment/upload_test.rb\n/Users/USER/workspace/doctolib\n…(truncated, 1109 more chars)\n\nTool results:\n\n  → result (ok): No files found\n\nLet me check the uploader service and see how documents are created and stored:\n\nTools used:\n\n- Read: /Users/USER/workspace/doctolib/doctolib/engines/patient_account_documents/app/services/patient_account_documents/uploader.rb (1–100)\n\nTools used:\n\n- Bash: grep -r \"file_id\\|file..id\\|FileStorage\\|document_files\" /Users/USER/workspace/doctolib/doctolib/engines/patient_account_documents/app/models --include=\".rb\" | head -30\n\nTool results:\n\n  → result (ok): 1→# frozen_string_literal: true\n     2→\n     3→module PatientAccountDocuments\n     4→  class Uploader\n     5→    SOFT_DELETED_STORAGE_PREFIX = 'to_be_deleted'\n     6→\n     7→    # Manage patient account documents upload, copy and deletion on S3 buckets.\n     8→    # This services assumes that doctor documents and patient account documents are stored in the same S3 bucket.\n     9→    #\n    10→    # @param document [PatientAccountDocuments::Document] the document on which the operations will be pe\n…(truncated, 4045 more chars)\n\nTool results:\n\n  → result (ok): /Users/USER/workspace/doctolib/doctolib/engines/patient_account_documents/app/models/patient_account_documents/document_files/file.rb:#  file = PatientAccountDocuments.document_files.create(file_io)\n/Users/USER/workspace/doctolib/doctolib/engines/patient_account_documents/app/models/patient_account_documents/document.rb:    column :file_id, system_id: true, data_subject_identity_likelihood: :none, sensitive_likelihood: :none\n/Users/USER/workspace/doctolib/doctolib/engines/patient_account_documen\n…(truncated, 1358 more chars)\n\nNow let me find the API controller that handles the V2 document creation:\n\nTools used:\n\n- Bash: find /Users/USER/workspace/doctolib/doctolib/engines/patient_account_documents/app/controllers -name \"upload\" -o -name \"shareable\"\n\nTools used:\n\n- Read: /Users/USER/workspace/doctolib/doctolib/engines/patient_account_documents/app/controllers/patient_account_documents/patient_app/documents/v2/shareable_documents_controller.rb\n\nTool results:\n\n  → result (ok): 1→# frozen_string_literal: true\n     2→\n     3→module PatientAccountDocuments::PatientApp::Documents::V2\n     4→  class ShareableDocumentsController < ::PatientAccountDocuments::ApplicationController\n     5→    authenticate_with Authentication::Api::Filter::ACCOUNT, enforce: false\n     6→\n     7→    # rubocop:disable Metrics/MethodLength\n     8→    def show\n     9→      authorize :document, policy_class: EmptyPolicy\n    10→      temporary_access_id = params[:temporary_access_id]\n    11→      rai\n…(truncated, 2786 more chars)\n\nTool results:\n\n  → result (ok): /Users/USER/workspace/doctolib/doctolib/engines/patient_account_documents/app/controllers/patient_account_documents/patient_app/documents/shareable_documents_controller.rb\n/Users/USER/workspace/doctolib/doctolib/engines/patient_account_documents/app/controllers/patient_account_documents/patient_app/documents/v2/shareable_documents_controller.rb\n\nPerfect! Now let me check the Document model to understand the file_id field and how documents are created:\n\nTools used:\n\n- Read: /Users/USER/workspace/doctolib/doctolib/engines/patient_account_documents/app/models/patient_account_documents/document.rb (1–120)\n\nTool results:\n\n  → result (ok): 1→# frozen_string_literal: true\n     2→\n     3→class PatientAccountDocuments::Document < PatientAccountDocuments::PatientAccountDocumentsRecord\n     4→  include Trashable\n     5→  include Anonymizable\n     6→  include PatientAccountDocuments::Observability::Document\n     7→  include PatientAccountDocuments::PortalRestriction\n     8→  include DataRetention::Retainable\n     9→\n    10→  self.table_name = 'patient_account_documents' # rubocop:todo Rails/TableNameAssignment\n    11→\n    12→  data_taxo\n…(truncated, 5142 more chars)\n\nLet me check the Creator service to see how documents are created through the upload endpoint:\n\nTools used:\n\n- Read: /Users/USER/workspace/doctolib/doctolib/engines/patient_account_documents/app/services/patient_account_documents/creator.rb (1–150)\n\nTool results:\n\n  → result (ok): 1→# frozen_string_literal: true\n     2→\n     3→# @deprecated please use PatientAccountDocuments::V2::Creator\n     4→class PatientAccountDocuments::Creator\n     5→  include ActiveModel::Model\n     6→  include TrackingEvents\n     7→\n     8→  attr_accessor :attributes, :country, :encryption_attributes\n     9→\n    10→  class InvalidDocumentKind < StandardError\n    11→    attr_reader :kind\n    12→\n    13→    def initialize(kind)\n    14→      @kind = kind\n    15→      super(\"Invalid document kind: #{k\n…(truncated, 5372 more chars)\n\nNow let me check for the upload_content_and_save! method and the Document's file_id handling:\n\nTools used:\n\n- Bash: grep -n \"upload_content_and_save\\|file_id\" /Users/USER/workspace/doctolib/doctolib/engines/patient_account_documents/app/models/patient_account_documents/document.rb | head -40\n\nTools used:\n\n- Bash: grep -rn \"def upload_content_and_save\" /Users/USER/workspace/doctolib/doctolib/engines/patient_account_documents/app/models --include=\"*.rb\"\n\nTool results:\n\n  → result (ok): /Users/USER/workspace/doctolib/doctolib/engines/patient_account_documents/app/models/patient_account_documents/document.rb:170:  def upload_content_and_save!\n\nTool results:\n\n  → result (ok): 30:    column :file_id, system_id: true, data_subject_identity_likelihood: :none, sensitive_likelihood: :none\n47:    Anonymized::UUID => %i[key file_id],\n170:  def upload_content_and_save!\n241:    file_id.present?\n\nTools used:\n\n- Read: /Users/USER/workspace/doctolib/doctolib/engines/patient_account_documents/app/models/patient_account_documents/document.rb (170–250)\n\nTool results:\n\n  → result (ok): 170→  def upload_content_and_save!\n   171→    ::PatientAccountDocuments::Uploader.new(self).upload_and_save!\n   172→\n   173→    if !tanker_encrypted?\n   174→      ErrorTracker.message('Saved unencrypted PatientAccountDocuments::Document', parameters: { document_id: id })\n   175→    end\n   176→  end\n   177→\n   178→  def sharings=(sharings)\n   179→    if readonly?\n   180→      self.readonly_sharings = sharings\n   181→    else\n   182→      super\n   183→    end\n   184→  end\n   185→\n   186→  def shar\n…(truncated, 2683 more chars)\n\nPerfect! Now I have enough information. Let me compile my findings into a comprehensive report:\n\nDocument Viewing/Preview Flow - Diagnostic Report\n\nBased on my analysis of the codebase, I've identified the complete flow and pinpointed the likely cause of the \"Failed to load PDF file\" error appearing immediately after upload but resolving after refresh.\n\n1. Component that renders document preview\n\nFile: /packages/@doctolib/unified_document_viewer/src/unified/viewer-modal/UnifiedDocumentsViewerModal.tsx\n\n- This is the main component that shows documents\n- It passes decryptedFileUrl to DocumentViewerModal (line 313)\n- DocumentViewerModal then passes the URL to the generic Document component\n\nFile: /app/assets/javascripts/components/shared/documents/Document.jsx\n\n- This component dispatches to different renderers based on document type (PDF, Image, TIFF, etc.)\n- For PDFs, it uses PdfReader component which uses the react-pdf library (line 66)\n\nFile: /app/assets/javascripts/components/base/PdfReader.jsx\n\n- Uses react-pdf library's Document component\n- Calls onLoadError callback when PDF fails to load\n- The error is propagated up through UnifiedDocumentsViewerModal.onLoadError() which sends monitoring events\n\n2. Query flow when clicking \"dokument anzeigen\"\n\nThe flow is:\n\n1. Frontend queries documents list: /account/documents.json\n   - Uses hook: /packages/@doctolib/patient_account_documents/src/queries/patient_account_documents/accounts/documents.ts\n   - useDocumentsIndex fetches from GET /account/documents.json\n\n2. When user clicks on document to view:\n   - Frontend fetches the document details via useDocumentsShow() hook\n   - Gets document metadata: ID, filename, content_type, file_id (for V2 documents), etc.\n\n3. URL construction for viewing:\n   - For V2 documents (server-encrypted): download_path returns /doctor_app/documents/{id} (line 215 in Document model)\n   - For legacy documents: Uses different path\n   - The URL is passed directly to Document component which loads it via react-pdf\n\n3. Presigned URL generation and caching\n\nCritical Finding: The system does NOT use presigned URLs!\n\nInstead:\n- The URL is simply /doctor_app/documents/{id} \n- The backend controller PatientAccountDocuments::PatientApp::V2::Account::DocumentsController (lines 15-50) handles the request\n- For each request to view the document, it calls: PatientAccountDocuments::V2::FileManager.download_file(document.file_id)\n\nFile: /engines/patient_account_documents/app/services/patient_account_documents/v2/file_manager.rb (lines 98-114)\n\nThis service:\n- Takes the file_id identifier  \n- Calls PatientAccountDocuments.document_files.download(identifier) (line 107)\n- If file not found: Returns Failure[DownloadFileFailureTypes::DOCUMENT_DOES_NOT_EXIST, error.message]\n- On success: Returns Success[file] which gets sent to browser\n\n4. Flow from clicking view button to loading PDF\n\n1. User clicks \"dokument anzeigen\"\n2. Frontend fetches document metadata (file_id is retrieved from database)\n3. document.download_path returns: /doctor_app/documents/{id}\n4. Browser makes GET request to /doctor_app/documents/{id}\n5. Controller calls V2::FileManager.download_file(document.file_id)\n6. FileManager calls document_files.download(identifier) \n7. If file exists in FileStorage → returns file content → browser renders PDF\n8. If file NOT found in FileStorage → returns 404 error → \"Failed to load PDF file\"\n\n5. Error handling and \"Failed to load PDF file\" message\n\nThe error message comes from react-pdf library when:\n- The HTTP request returns 404 or fails\n- The PDF data is malformed/incomplete\n- The file cannot be loaded from the URL\n\nError handling chain:\n1. PdfReader.onLoadError() is called by react-pdf library\n2. Calls onLoadError?.(error) prop (line 267)\n3. Flows up to DocumentViewerModal.onLoadError() which sends monitoring event: udvm_failed_to_load_document\n4. Monitoring shows: account_id, document_id, has_full_access, error details\n\n6. ROOT CAUSE: Timing issue with S3 upload completion\n\nThe Problem:\n\nWhen a document is uploaded via the V2 endpoint with UPLOAD_DOCUMENT_WRITE feature switch:\n\n1. Upload flow (PatientAccountDocuments::Creator#create!):\n   - File is validated and assigned to document\n   - document.upload_content_and_save!() is called (line 59)\n   - This calls PatientAccountDocuments::Uploader.new(self).upload_and_save!()\n\n2. In Uploader (app/services/patient_account_documents/uploader.rb lines 34-50):\n      def upload_and_save!\n     not_uploaded_yet = !document.key || !document_present_on_storage?\n     \n     if not_uploaded_yet\n       document.key ||= SecureRandom.uuid\n       put_on_external_storage  # Uploads to S3\n     end\n     \n     begin\n       document.save!  # Saves to database with file_id\n     rescue ActiveRecord::ActiveRecordError => error\n       # Rollback both S3 and FileStorage\n       PatientAccountDocuments::LegacyFileManager.delete_file(document.key)\n       PatientAccountDocuments::V2::FileManager.delete_file(document.file_id)\n       raise error\n     end\n   end\n\n3. The Race Condition:\n   - S3 upload happens via PatientAccountDocuments::V2::FileManager.upload_file() \n   - Document metadata (including file_id) is saved to database\n   - BUT: Document appears in the list immediately (via database query)\n   - Frontend tries to view the document\n   - Frontend calls /doctor_app/documents/{id} \n   - Backend tries to download from FileStorage using file_id\n   - S3 object might not be fully available yet (upload still in progress or eventual consistency delay)\n   - Returns DOCUMENT_DOES_NOT_EXIST failure → 404 → \"Failed to load PDF file\"\n\n4. Why browser refresh fixes it:\n   - S3 object has time to propagate and become available\n   - When browser refreshes, the same call succeeds\n   - Document renders successfully\n\n7. Potential contributing factors\n\n- FileStorage layer abstraction: The V2 endpoint uses Doctolib::FileStorage abstraction (likely backed by S3)\n- No wait/retry logic: The download_file method doesn't retry or wait for eventual consistency\n- List refresh timing: The document appears in the list before the file is fully committed to storage\n- S3 eventual consistency: AWS S3 has eventual consistency for new objects in some regions\n\nKey Files to Monitor:\n- /engines/patient_account_documents/app/services/patient_account_documents/v2/file_manager.rb - Line 107: download call\n- /engines/patient_account_documents/app/services/patient_account_documents/uploader.rb - Lines 34-50: upload sequence\n- /engines/patient_account_documents/app/models/patient_account_documents/document.rb - Line 240: server_encrypted_content_available? check\n- /packages/@doctolib/unified_document_viewer/src/unified/viewer-modal/UnifiedDocumentsViewerModal.tsx - Line 157-180: Error tracking\n\nThe timing issue occurs because the document metadata is persisted to the database before the file is guaranteed to be fully available in S3, creating a window where the document appears available but the file cannot be retrieved.",
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}