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Frank Cools c240ef9769 Complete CA-3 structure with all three sections 
- Add Section A: TVA collectée (Output VAT) - Boxes 01, 02, 03, 05, 08
- Add Section B: TVA déductible (Input VAT) - Boxes 20, 21, 22
- Add Section C: Résultat (Result) - Boxes 25, 26, 28, 29
- Update French translations with complete box descriptions
- Update English translations with full CA-3 structure
- Add PCG account mappings for all sections
- Update task list with complete calculation logic
- Include automatic totals and net calculations
- Add new task for complete CA-3 form structure implementation
2025-10-02 15:42:04 +02:00

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DeclarationTVA - Task List

Project: French CA-3 VAT Declaration Module for Dolibarr

Created: 2025-01-27
Status: In Development
Priority: High

Phase 1: Foundation & Database (Week 1-2)

1.1 Database Schema Design

  • Task 1.1.1: Design database schema for PCG account mappings

    • Create llx_declarationtva_config table structure
    • Define fields for CA-3 box mappings (01, 02, 03, 05, 08)
    • Add support for multiple VAT rates (20%, 10%, 5.5%, 2.1%)
    • Estimated: 4 hours
    • Dependencies: None

  • Task 1.1.2: Design declaration storage schema

    • Create llx_declarationtva_declarations table
    • Add period management fields
    • Include status tracking (draft, submitted, approved)
    • Estimated: 3 hours
    • Dependencies: Task 1.1.1

  • Task 1.1.3: Create period management table

    • Design llx_declarationtva_periods table
    • Support quarterly and monthly periods
    • Add period status and validation
    • Estimated: 2 hours
    • Dependencies: None

1.2 Core Class Structure

  • Task 1.2.1: Create DeclarationTVA main class

    • File: core/class/declarationtva.class.php
    • Basic CRUD operations
    • Period management methods
    • Estimated: 6 hours
    • Dependencies: Task 1.1.1, 1.1.2

  • Task 1.2.2: Create DeclarationTVA_Config class

    • File: core/class/declarationtva_config.class.php
    • PCG account mapping management
    • Validation methods
    • Estimated: 4 hours
    • Dependencies: Task 1.1.1

  • Task 1.2.3: Create DeclarationTVA_Period class

    • File: core/class/declarationtva_period.class.php
    • Period creation and validation
    • Date range management
    • Estimated: 3 hours
    • Dependencies: Task 1.1.3

1.3 Database Implementation

  • Task 1.3.1: Update SQL schema file

    • File: sql/dolibarr_allversions.sql
    • Add all table creation statements
    • Include indexes and constraints
    • Estimated: 2 hours
    • Dependencies: Tasks 1.1.1, 1.1.2, 1.1.3

  • Task 1.3.2: Create database migration scripts

    • Handle version upgrades
    • Data migration procedures
    • Estimated: 3 hours
    • Dependencies: Task 1.3.1

Phase 2: Configuration Interface (Week 3-4)

2.1 Setup Page Enhancement

  • Task 2.1.1: Redesign admin setup page

    • File: admin/setup.php
    • Replace generic parameters with CA-3 specific configuration
    • Add PCG account selection interface
    • Estimated: 8 hours
    • Dependencies: Task 1.2.2

  • Task 2.1.2: Create PCG account mapping interface

    • Dynamic form for each CA-3 box
    • Account code validation
    • Rate selection (20%, 10%, 5.5%, 2.1%)
    • Estimated: 10 hours
    • Dependencies: Task 2.1.1

  • Task 2.1.3: Add period configuration

    • Quarterly/monthly period selection
    • Default period settings
    • Estimated: 4 hours
    • Dependencies: Task 1.2.3

2.2 User Interface Components

  • Task 2.2.1: Create main declaration interface

    • File: declarationtvaindex.php
    • Period selection dropdown
    • Declaration status display
    • Estimated: 6 hours
    • Dependencies: Task 1.2.1

  • Task 2.2.2: Add declaration creation wizard

    • Step-by-step process
    • Data validation at each step
    • Estimated: 8 hours
    • Dependencies: Task 2.2.1

Phase 3: Data Processing (Week 5-6)

3.1 Accounting Data Extraction

  • Task 3.1.1: Create data extraction methods

    • Query Dolibarr accounting tables
    • Filter by PCG account codes
    • Handle different VAT rates
    • Estimated: 12 hours
    • Dependencies: Task 1.2.1

  • Task 3.1.2: Implement CA-3 calculation logic

    • Section A (Output VAT): Boxes 01, 02, 03, 05, 08
    • Section B (Input VAT): Boxes 20, 21, 22
    • Section C (Result): Boxes 25, 26, 28, 29
    • Automatic calculation of totals and net amounts
    • Estimated: 20 hours
    • Dependencies: Task 3.1.1

  • Task 3.1.3: Add data validation

    • Cross-check calculations
    • Validate against French tax rules
    • Error reporting
    • Estimated: 8 hours
    • Dependencies: Task 3.1.2

  • Task 3.1.4: Implement complete CA-3 form structure

    • Section A: TVA collectée (Output VAT) - Boxes 01, 02, 03, 05, 08
    • Section B: TVA déductible (Input VAT) - Boxes 20, 21, 22
    • Section C: Résultat (Result) - Boxes 25, 26, 28, 29
    • Automatic section totals and net calculations
    • Estimated: 10 hours
    • Dependencies: Task 3.1.2

3.2 Period Management

  • Task 3.2.1: Implement period calculation

    • Automatic period detection
    • Date range validation
    • Estimated: 4 hours
    • Dependencies: Task 1.2.3

  • Task 3.2.2: Add period locking mechanism

    • Prevent modifications to submitted periods
    • Audit trail
    • Estimated: 3 hours
    • Dependencies: Task 3.2.1

Phase 4: User Interface (Week 7-8)

4.1 Main Interface Development

  • Task 4.1.1: Create declaration list view

    • Show all declarations by period
    • Status indicators
    • Action buttons (edit, delete, export)
    • Estimated: 6 hours
    • Dependencies: Task 2.2.1

  • Task 4.1.2: Add declaration detail view

    • CA-3 form display
    • Editable fields
    • Calculation summary
    • Estimated: 8 hours
    • Dependencies: Task 3.1.2

  • Task 4.1.3: Create period management interface

    • Period creation
    • Period status management
    • Estimated: 4 hours
    • Dependencies: Task 3.2.1

4.2 Form Handling

  • Task 4.2.1: Implement form validation

    • Client-side validation
    • Server-side validation
    • Error message display
    • Estimated: 6 hours
    • Dependencies: Task 4.1.2

  • Task 4.2.2: Add auto-save functionality

    • Save draft declarations
    • Restore previous sessions
    • Estimated: 4 hours
    • Dependencies: Task 4.2.1

Phase 5: Export and Reporting (Week 9-10)

5.1 PDF Generation

  • Task 5.1.1: Create PDF template

    • File: templates/declarationtva/ca3_pdf.tpl
    • Official CA-3 form layout
    • Company information header
    • Estimated: 8 hours
    • Dependencies: Task 4.1.2

  • Task 5.1.2: Implement PDF generation

    • Use Dolibarr PDF engine
    • Data population
    • Formatting and styling
    • Estimated: 6 hours
    • Dependencies: Task 5.1.1

5.2 Export Formats

  • Task 5.2.1: Create XML export

    • French tax authority format
    • Data structure compliance
    • Estimated: 6 hours
    • Dependencies: Task 3.1.2

  • Task 5.2.2: Create CSV export

    • Data analysis format
    • Customizable fields
    • Estimated: 3 hours
    • Dependencies: Task 3.1.2

5.3 Reporting Features

  • Task 5.3.1: Add declaration history

    • Previous periods view
    • Comparison functionality
    • Estimated: 4 hours
    • Dependencies: Task 4.1.1

  • Task 5.3.2: Create summary reports

    • Annual VAT summary
    • Trend analysis
    • Estimated: 5 hours
    • Dependencies: Task 5.3.1

Phase 6: Testing and Documentation (Week 11-12)

6.1 Unit Testing

  • Task 6.1.1: Create test suite

    • File: test/phpunit/
    • Test all core classes
    • Test calculation logic
    • Estimated: 8 hours
    • Dependencies: All previous tasks

  • Task 6.1.2: Integration testing

    • Test with real Dolibarr data
    • Performance testing
    • Estimated: 6 hours
    • Dependencies: Task 6.1.1

6.2 Documentation

  • Task 6.2.1: Create user manual

    • Setup instructions
    • Usage guide
    • Troubleshooting
    • Estimated: 6 hours
    • Dependencies: All previous tasks

  • Task 6.2.2: Create developer documentation

    • API documentation
    • Code comments
    • Architecture overview
    • Estimated: 4 hours
    • Dependencies: All previous tasks

6.3 French Compliance

  • Task 6.3.1: Validate tax compliance

    • Review with French tax expert
    • Format validation
    • Estimated: 4 hours
    • Dependencies: Task 5.2.1

  • Task 6.3.2: Final testing

    • End-to-end testing
    • User acceptance testing
    • Estimated: 6 hours
    • Dependencies: Task 6.3.1

Language Support

6.4 Bilingual Interface

  • Task 6.4.1: Complete French translations

    • File: langs/fr_FR/declarationtva.lang
    • All interface elements
    • Error messages
    • Estimated: 4 hours
    • Dependencies: All UI tasks

  • Task 6.4.2: Complete English translations

    • File: langs/en_US/declarationtva.lang
    • Update existing translations
    • Estimated: 2 hours
    • Dependencies: Task 6.4.1

Discovered During Work

Tasks discovered during development will be added here

Notes

  • All tasks should include proper error handling
  • Code must follow Dolibarr coding standards
  • All user-facing text must be translatable
  • Database changes must be backward compatible
  • Performance optimization for large datasets
  • Security considerations for financial data

Total Estimated Time: 200+ hours

Priority Order:

  1. Database schema and core classes
  2. Configuration interface
  3. Data processing and calculations
  4. User interface
  5. Export functionality
  6. Testing and documentation