Implement document translation feature using DIFY AI API with batch processing:
Backend:
- Add DIFY client with batch translation support (5000 chars, 20 items per batch)
- Add translation service with element extraction and result building
- Add translation router with start/status/result/list/delete endpoints
- Add translation schemas (TranslationRequest, TranslationStatus, etc.)
Frontend:
- Enable translation UI in TaskDetailPage
- Add translation API methods to apiV2.ts
- Add translation types
Features:
- Batch translation with numbered markers [1], [2], [3]...
- Support for text, title, header, footer, paragraph, footnote, table cells
- Translation result JSON with statistics (tokens, latency, batch_count)
- Background task processing with progress tracking
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Co-Authored-By: Claude <noreply@anthropic.com>
- Remove onAutoConfigReceived callback that caused state update loop
- Add document analysis to check if file needs OCR track
- Only show preprocessing options for OCR-eligible files (images, scanned PDFs)
- Show informative message for editable PDFs that use direct text extraction
- Display text coverage percentage for editable documents
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Co-Authored-By: Claude <noreply@anthropic.com>
- Create PreprocessingPreview component with debounced config updates
- Show original vs preprocessed images side-by-side
- Display image quality metrics (contrast, sharpness) with quality indicators
- Add zoom controls and fullscreen view for detailed inspection
- Show auto-detected configuration when in auto mode
- Integrate preview toggle with PreprocessingSettings component
- Add i18n translations for preview panel UI
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Co-Authored-By: Claude <noreply@anthropic.com>
Major improvements to preprocessing controls:
Backend:
- Add contrast_strength (0.5-3.0) and sharpen_strength (0.5-2.0) to PreprocessingConfig
- Auto-detection now calculates optimal strength based on image quality metrics:
- Lower contrast → Higher contrast_strength
- Lower edge strength → Higher sharpen_strength
- Disable binarization in auto mode (rarely beneficial)
- CLAHE clipLimit now scales with contrast_strength
- Sharpening uses unsharp mask with variable strength
Frontend:
- Add strength sliders for contrast and sharpen in manual mode
- Sliders show current value and strength level (輕微/正常/強/最強)
- Move binarize option to collapsible "進階選項" section
- Updated i18n translations for strength labels
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
Implement user-configurable PP-StructureV3 parameters to allow fine-tuning OCR behavior
from the frontend. This addresses issues with over-merging, missing small text, and
document-specific optimization needs.
Backend:
- Add PPStructureV3Params schema with 7 adjustable parameters
- Update OCR service to accept custom parameters with smart caching
- Modify /tasks/{task_id}/start endpoint to receive params in request body
- Parameter priority: custom > settings default
- Conditional caching (no cache for custom params to avoid pollution)
Frontend:
- Create PPStructureParams component with collapsible UI
- Add 3 presets: default, high-quality, fast
- Implement localStorage persistence for user parameters
- Add import/export JSON functionality
- Integrate into ProcessingPage with conditional rendering
Testing:
- Unit tests: 7/10 passing (core functionality verified)
- API integration tests for schema validation
- E2E tests with authentication support
- Performance benchmarks for memory and initialization
- Test runner script with venv activation
Environment:
- Remove duplicate backend/venv (use root venv only)
- Update test runner to use correct virtual environment
OpenSpec:
- Archive fix-pdf-coordinate-system proposal
- Archive frontend-adjustable-ppstructure-params proposal
- Create ocr-processing spec
- Update result-export spec
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
Major Features:
- Add PDF generation service with Chinese font support
- Parse HTML tables from PP-StructureV3 and rebuild with ReportLab
- Extract table text for translation purposes
- Auto-filter text regions inside tables to avoid overlaps
Backend Changes:
1. pdf_generator_service.py (NEW)
- HTMLTableParser: Parse HTML tables to extract structure
- PDFGeneratorService: Generate layout-preserving PDFs
- Coordinate transformation: OCR (top-left) → PDF (bottom-left)
- Font size heuristics: 75% of bbox height with width checking
- Table reconstruction: Parse HTML → ReportLab Table
- Image embedding: Extract bbox from filenames
2. ocr_service.py
- Add _extract_table_text() for translation support
- Add output_dir parameter to save images to result directory
- Extract bbox from image filenames (img_in_table_box_x1_y1_x2_y2.jpg)
3. tasks.py
- Update process_task_ocr to use save_results() with PDF generation
- Fix download_pdf endpoint to use database-stored PDF paths
- Support on-demand PDF generation from JSON
4. config.py
- Add chinese_font_path configuration
- Add pdf_enable_bbox_debug flag
Frontend Changes:
1. PDFViewer.tsx (NEW)
- React PDF viewer with zoom and pagination
- Memoized file config to prevent unnecessary reloads
2. TaskDetailPage.tsx & ResultsPage.tsx
- Integrate PDF preview and download
3. main.tsx
- Configure PDF.js worker via CDN
4. vite.config.ts
- Add host: '0.0.0.0' for network access
- Use VITE_API_URL environment variable for backend proxy
Dependencies:
- reportlab: PDF generation library
- Noto Sans SC font: Chinese character support
🤖 Generated with Claude Code
https://claude.com/claude-code
Co-Authored-By: Claude <noreply@anthropic.com>
Backend fixes:
- Fix markdown generation using correct 'markdown_content' key in tasks.py
- Update admin service to return flat data structure matching frontend types
- Add task_count and failed_tasks fields to user statistics
- Fix top users endpoint to return complete user data
Frontend fixes:
- Migrate ResultsPage from V1 batch API to V2 task API with polling
- Create TaskDetailPage component with markdown preview and download buttons
- Refactor ExportPage to support multi-task selection using V2 download endpoints
- Fix login infinite refresh loop with concurrency control flags
- Create missing Checkbox UI component
New features:
- Add /tasks/:taskId route for task detail view
- Implement multi-task batch export functionality
- Add real-time task status polling (2s interval)
OpenSpec:
- Archive completed proposal 2025-11-17-fix-v2-api-ui-issues
- Create result-export and task-management specifications
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
Changes:
- Replace apiClient with apiClientV2 for task queries
- Update from batch status polling to task detail polling
- Change from batch_id to task_id (UUID string)
- Simplify UI to show single task instead of batch with multiple files
- Update redirect from /results to /tasks page
- Add task details card with timestamps
- Add error message display for failed tasks
- Calculate progress based on task status (pending: 0%, processing: 50%, completed/failed: 100%)
Fixes:
- 404 error: GET /api/v2/batch/{id}/status (endpoint no longer exists in V2)
- Continuous polling to non-existent batch endpoint
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
Changes:
- Add uploadFile() method to apiClientV2 for single file uploads
- Update UploadPage to use apiClientV2 instead of apiClient
- Change upload logic to iterate files and collect task IDs
- Add navigation to /login after logout in Layout component
Fixes:
- 403 Forbidden error on file upload (token mismatch between V1/V2 APIs)
- Logout button not redirecting to login page after clearing auth
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
Add missing file upload functionality to V2 API that was removed
during V1 to V2 migration. Update frontend to use v2 API endpoints.
Backend changes:
- Add /api/v2/upload endpoint in main.py for file uploads
- Import necessary dependencies (UploadFile, hashlib, TaskFile)
- Upload endpoint creates task, saves file, and returns task info
- Add UploadResponse schema to task.py schemas
- Update tasks router imports for consistency
Frontend changes:
- Update API_VERSION from 'v1' to 'v2' in api.ts
- Update UploadResponse type to match V2 API response format
(task_id instead of batch_id, single file instead of array)
This fixes the 404 error when uploading files from the frontend.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
Frontend Features:
- Add ProtectedRoute component with token expiry validation
- Create AdminDashboardPage with system statistics and user management
- Create AuditLogsPage with filtering and pagination
- Add admin-only navigation (Shield icon) for ymirliu@panjit.com.tw
- Add admin API methods to apiV2 service
- Add admin type definitions (SystemStats, AuditLog, etc.)
Token Management:
- Auto-redirect to login on token expiry
- Check authentication on route change
- Show loading state during auth check
- Admin privilege verification
Backend Testing:
- Add pytest configuration (pytest.ini)
- Create test fixtures (conftest.py)
- Add unit tests for auth, tasks, and admin endpoints
- Add integration tests for complete workflows
- Test user isolation and admin access control
Documentation:
- Add TESTING.md with comprehensive testing guide
- Include test running instructions
- Document fixtures and best practices
Routes:
- /admin - Admin dashboard (admin only)
- /admin/audit-logs - Audit logs viewer (admin only)
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
Remove all V1 architecture components and promote V2 to primary:
- Delete all paddle_ocr_* table models (export, ocr, translation, user)
- Delete legacy routers (auth, export, ocr, translation)
- Delete legacy schemas and services
- Promote user_v2.py to user.py as primary user model
- Update all imports and dependencies to use V2 models only
- Update main.py version to 2.0.0
Database changes:
- Fix SQLAlchemy reserved word: rename audit_log.metadata to extra_data
- Add migration to drop all paddle_ocr_* tables
- Update alembic env to only import V2 models
Frontend fixes:
- Fix Select component exports in TaskHistoryPage.tsx
- Update to use simplified Select API with options prop
- Fix AxiosInstance TypeScript import syntax
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
Complete redesign of frontend interface with focus on usability, visual hierarchy, and professional appearance:
**Design System:**
- Implemented clean blue color theme (#3B82F6) with professional palette
- Created consistent spacing, shadows, and typography system
- Added reusable utility classes (page-header, section, status-badge-*)
- Removed excessive gradients and decorative effects
**Layout Architecture:**
- Redesigned main layout with 256px sidebar navigation
- Sidebar includes logo, navigation with descriptions, and user profile
- Main content area with search bar and scrollable content
- Replaced horizontal navigation with vertical sidebar pattern
**Page Redesigns:**
1. LoginPage: Split-screen design with branding (left) and clean form (right)
- Feature highlights with icons and statistics
- Mobile responsive design
- Professional gradient background with subtle pattern
2. UploadPage: Added 3-step visual progress indicator
- Better file organization with summary and status badges
- Clear action bar with confirmation message
- Improved file list presentation
3. ProcessingPage: Enhanced progress visualization
- Large progress bar with percentage display
- 4-column stats grid (Completed, Processing, Failed, Total)
- Clean file status list with processing times
4. ResultsPage: Improved 5-column layout (2 for list, 3 for preview)
- Added stats cards for accuracy, processing time, and text blocks
- Better preview panel with detailed metrics
- Export and translate action buttons
5. ExportPage: Better organization with 2-column layout
- Visual format selection with icons (TXT, JSON, Excel, Markdown, PDF)
- Improved form controls and option organization
- Sticky preview sidebar showing current configuration
**Component Updates:**
- Updated Button component with proper variants
- Enhanced Card component with hover effects
- Maintained FileUpload component functionality
- Added lucide-react for modern iconography
**Technical Improvements:**
- Fixed Tailwind CSS v4 compatibility issues with @apply
- Removed decorative animations in favor of functional ones
- Improved accessibility with proper labels and ARIA attributes
- Better color contrast and readability
This redesign transforms the interface from a basic layout to a professional, enterprise-ready application with clear visual hierarchy and excellent usability.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
