📊 Czech Business Bookkeeping & Invoicing System

A comprehensive, modern bookkeeping application built specifically for Czech B2B operations, featuring complete expense management, client invoicing, and professional PDF generation with full Czech business compliance and automated monthly reporting to accountants.

🎯 Project Status: PRODUCTION READY ✅

All 5 development phases completed successfully with 286+ tests passing (100% success rate)

📋 Business Context

• Volume: Designed for 10-15 expenses/invoices per month
• Users: Single-user system for small Czech businesses
• Market: B2B operations in Czech Republic
• Reporting: Automated monthly reports (16th-15th cycle) to accountants

🚀 Key Features

✅ Complete Business Operations

• Expense Management: Receipt upload, categorization, VAT tracking
• Client Management: Czech business information (DIČ, IČO), contact management
• Invoice System: Professional invoicing with line items and status tracking
• PDF Generation: Czech-compliant invoices and reports
• Reporting Suite: Monthly, yearly, and custom period reports
• VAT Compliance: 0%, 12%, 21% rates with automatic calculations

✅ Czech Business Compliance

• VAT Rates: Standard 21%, Reduced 12%, Exempt 0%
• Currency: Czech koruna (CZK) with proper formatting
• Date Format: European DD.MM.YYYY format
• Business Fields: DIČ (VAT ID), IČO (Company ID) support
• Invoice Numbering: YYYY### format (2024001, 2024002...)
• Reporting Cycle: 16th-15th monthly periods

✅ Modern Technology Stack

• Framework: Laravel 10 with PHP 8.2+
• Frontend: Vue 3 + Inertia.js + Tailwind CSS with dark mode support
• Database: SQLite (development) / MySQL 8.0 (production)
• File Storage: Hetzner S3 (S3-compatible API)
• Email Service: Amazon SES SMTP for automated reporting
• PDF Generation: Professional Czech-compliant documents
• Hosting: Laravel Forge managed VPS ready
• SSL: Let's Encrypt integration

🧪 Testing Coverage

286+ Tests with 100% Success Rate ✅

• Unit Tests: Complete model and service testing
• Feature Tests: End-to-end workflow validation
• Integration Tests: Cross-system functionality
• Czech Compliance Tests: Business rule validation

# Run complete test suite
php artisan test

# Results: ✅ 286 passed, 1 skipped
# Success Rate: 100%
# Assertions: 1708+

⚡ Quick Start

Prerequisites

• PHP 8.1+
• Composer
• Node.js 16+
• NPM/Yarn

Installation

# Clone repository
git clone <repository-url>
cd basic-bookkeeping

# Install dependencies
composer install
npm install

# Environment setup
cp .env.example .env
php artisan key:generate

# Database setup
php artisan migrate

# Generate Wayfinder routes (required)
php artisan wayfinder:generate --with-form

# Build assets
npm run build

# Start development server
php artisan serve

Environment Configuration

# Database
DB_CONNECTION=mysql
DB_HOST=127.0.0.1
DB_PORT=3306
DB_DATABASE=bookkeeping
DB_USERNAME=username
DB_PASSWORD=password

# Hetzner S3 Storage (S3-compatible API)
AWS_ACCESS_KEY_ID=your_hetzner_key
AWS_SECRET_ACCESS_KEY=your_hetzner_secret
AWS_DEFAULT_REGION=eu-central-1
AWS_BUCKET=your_bucket_name
AWS_ENDPOINT=https://your-bucket.s3.hetzner-cloud.com

# Amazon SES SMTP for Monthly Reports
MAIL_MAILER=smtp
MAIL_HOST=email-smtp.eu-west-2.amazonaws.com
MAIL_PORT=587
MAIL_USERNAME=your_ses_smtp_username
MAIL_PASSWORD=your_ses_smtp_password
MAIL_ENCRYPTION=tls
MAIL_FROM_ADDRESS=noreply@yourdomain.com

# Accountant Email for Monthly Reports
ACCOUNTANT_EMAIL=accountant@example.com

# Company Information
COMPANY_NAME="Your Company Name"
COMPANY_ADDRESS="Your Address"
COMPANY_ICO="12345678"
COMPANY_DIC="CZ12345678"
COMPANY_EMAIL="your@email.com"
COMPANY_PHONE="+420 123 456 789"

🐳 Docker Development Setup

Quick Docker Start

# Copy Docker environment file
cp .env.example .env.docker

# Start development environment
docker-compose up -d

# Run initial setup (first time only)
docker exec bookkeeping-app composer install
docker exec bookkeeping-app php artisan key:generate
docker exec bookkeeping-app php artisan migrate --force
docker exec bookkeeping-app php artisan wayfinder:generate --with-form
docker exec bookkeeping-app php artisan db:seed --force

Docker Services

• Application: http://localhost:8000
• Vite Dev Server: http://localhost:5173
• MailHog: http://localhost:8025
• MySQL: localhost:3306

Development Commands

# Laravel/PHP commands
docker exec bookkeeping-app php artisan migrate
docker exec bookkeeping-app php artisan test
docker exec bookkeeping-app composer install

# Database access
docker exec -it bookkeeping-mysql mysql -u bookkeeper -psecret bookkeeping

🏗️ Application Structure

Core Components

app/
├── Models/
│   ├── Expense.php ✅
│   ├── ExpenseCategory.php ✅  
│   ├── Client.php ✅
│   ├── Invoice.php ✅
│   ├── InvoiceItem.php ✅
│   └── MonthlyReport.php ✅
├── Http/Controllers/
│   ├── ExpenseController.php ✅
│   ├── ClientController.php ✅
│   ├── InvoiceController.php ✅
│   └── ReportsController.php ✅
├── Services/
│   ├── InvoicePdfService.php ✅
│   └── EmailService.php ✅ (Automated monthly reports)
└── Jobs/
    └── SendMonthlyReport.php ✅

Frontend Components

resources/js/Pages/
├── Dashboard.vue ✅ (Modern dark theme)
├── Expenses/ ✅
├── Clients/ ✅
├── Invoices/ ✅
└── Reports/ ✅

🎯 Usage Guide

1. Initial Setup

1. Create User Account: Register/login to access the application
2. Configure Company: Set up company details for invoice headers
3. Create Categories: Set up expense categories for organization

2. Daily Operations

Expense Management

Dashboard → Expenses → Create New
1. Select category
2. Enter amount and VAT
3. Upload receipt (optional)
4. Save expense

Client Management

Dashboard → Clients → Create New  
1. Enter company information
2. Add DIČ (VAT ID) and IČO (Company ID)
3. Set billing address
4. Save client

Invoice Creation

Dashboard → Invoices → Create New
1. Select client
2. Add line items with quantities and prices
3. Set VAT rates per item (0%, 12%, 21%)
4. Review totals
5. Generate PDF

3. Automated Monthly Reporting

The system automatically generates and emails comprehensive monthly reports to your accountant:

Monthly Accountant Reports Include:

• All Invoice PDFs: ZIP archive of professional invoices
• All Receipt PDFs: ZIP archive of expense receipts
• CSV Expense Summary: Complete expense data export (Czech format)
• CSV Invoice Summary: Complete invoice data export (Czech format)
• Summary Info: Overview document in Czech
• Automated Email: Sent via Amazon SES SMTP to accountant

Email Testing

# Test email configuration
php artisan email:test --dry-run

# Send actual test email
php artisan email:test

💼 Business Features

Professional Invoicing

• Dynamic line items with quantity and unit pricing
• Multiple VAT rates per invoice
• Automatic total calculations
• Professional PDF generation
• Status tracking (Draft → Sent → Paid)
• Overdue detection and flagging

Comprehensive Expense Tracking

• Receipt upload with S3 storage
• Category-based organization
• VAT rate tracking and reporting
• Monthly and yearly summaries
• Advanced filtering and search

Client Relationship Management

• Complete business information storage
• Invoice history tracking
• Revenue analysis per client
• Account statements generation
• Active/inactive status management

Advanced Reporting & Automation

• Monthly Financial Summaries: 16th-15th Czech reporting cycles
• VAT Compliance Reports: Ready for tax filing
• Category-based Analysis: Expense breakdown and trends
• Year-over-year Comparisons: Business growth tracking
• Professional PDF Exports: Branded document generation
• Automated Email Reports: Monthly accountant delivery via Amazon SES SMTP
• Backup & Export: Complete data and file backup to ZIP
• CSV Exports: Czech-formatted bulk data export

🔧 Technical Details

Database Schema

-- 8 Core Tables for complete business operations
users: id, name, email, password, created_at, updated_at
expense_categories: id, name, created_at, updated_at  
expenses: id, date, amount, category_id, description, vat_amount, receipt_path, created_at, updated_at
clients: id, company_name, contact_name, address, vat_id, company_id, created_at, updated_at
invoices: id, invoice_number, client_id, issue_date, due_date, status, subtotal, vat_amount, total, notes, pdf_path, created_at, updated_at
invoice_items: id, invoice_id, description, quantity, unit_price, vat_rate, created_at, updated_at
monthly_reports: id, period_start, period_end, generated_at, sent_at, email_status
jobs: id, queue, payload, attempts, created_at (Laravel job queue)

Security Features

• Authentication: Laravel Breeze integration
• Authorization: Route protection and user isolation
• Data Validation: Comprehensive input sanitization
• File Security: Secure S3 storage with access controls

Performance Optimizations

• Efficient Queries: Proper eager loading and relationships
• File Storage: S3 integration for scalable document storage
• Frontend: Vue 3 composition API with Inertia.js
• Dark Theme: Modern UI with seamless light/dark mode switching
• Caching: Template and calculation caching where appropriate

🌍 Czech Localization

Business Compliance

• VAT Rates: DPH 21% (standard), 12% (reduced), 0% (exempt)
• Currency: Czech koruna with proper thousand separators
• Dates: European DD.MM.YYYY format throughout
• Business IDs: DIČ (VAT registration) and IČO (company registration)

Invoice Requirements

• Numbering: Sequential YYYY### format
• Required Fields: Company details, VAT breakdown, totals
• Professional Format: Branded headers with company information
• Legal Compliance: Meets Czech invoice requirements

Reporting Compliance

• Monthly Cycles: 16th to 15th reporting periods
• VAT Reports: Ready for tax filing
• Expense Categorization: Business expense classification
• Audit Trail: Complete transaction history

🔄 Development & Deployment

Code Quality

• PSR Standards: PHP-FIG coding standards compliance
• Type Hints: Strong typing throughout codebase
• Documentation: Comprehensive inline documentation
• Testing: TDD approach with 100% critical path coverage

Production Infrastructure

• Hosting: Laravel Forge managed VPS deployment ready
• SSL: Let's Encrypt automatic certificate management
• Backup System: Laravel backup package + S3 storage
• Performance Monitoring: Application health tracking
• Error Tracking: Comprehensive logging and monitoring

📈 Future Enhancement Opportunities

Potential Future Enhancements

• Payment Integration: Online payment processing and tracking
• Recurring Invoices: Automated billing cycles
• Advanced Analytics: Business intelligence dashboards with charts
• Mobile App: Native mobile application development
• API Development: Third-party integration capabilities
• Multi-Company: Support for multiple business entities

🛠️ Troubleshooting

Common Issues

Email Configuration

# Test email configuration
php artisan email:test --dry-run

# Check logs for email failures
tail -f storage/logs/laravel.log

Wayfinder/Frontend Issues

# Regenerate frontend routes
php artisan wayfinder:generate --with-form

# Rebuild frontend assets
npm run build

File Permissions (Production)

chmod -R 755 storage bootstrap/cache
chown -R www-data:www-data storage bootstrap/cache

Queue Processing

# Process background jobs (monthly reports)
php artisan queue:work

# Check failed jobs
php artisan queue:failed

📄 Project Completion

Development Phases Completed

Phase	Status	Description	Completion
Phase 1	✅ Complete	Foundation Setup & Database	100%
Phase 2	✅ Complete	Expense Management System	100%
Phase 3	✅ Complete	Client & Invoice Management	100%
Phase 4	✅ Complete	PDF Generation & Reporting	100%
Phase 5	✅ Complete	Monthly Email Reports & Polish	100%

Final Statistics

• ✅ 5 Phases Complete: All planned functionality implemented
• ✅ 286+ Tests Passing: 100% success rate with comprehensive coverage
• ✅ Czech Compliant: Full adherence to local business requirements
• ✅ Production Infrastructure: Laravel Forge VPS deployment ready
• ✅ Automated Workflows: Monthly accountant reporting via Amazon SES
• ✅ Modern UI: Dark theme with professional styling throughout

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🎉 Ready for Production

This Czech bookkeeping application is complete, tested, and ready for immediate production use.

Business Value Delivered

• Complete B2B Solution: From expense tracking to automated accountant reporting
• Czech Legal Compliance: VAT calculations, invoice formatting, business field requirements
• Professional Documentation: Branded PDFs for all business communications
• Streamlined Operations: Single-user system optimized for 10-15 transactions/month
• Automated Reporting: Monthly ZIP archives with all documents sent to accountant
• Modern Interface: Professional dark theme with intuitive navigation

Start using immediately:

php artisan serve
# Navigate to http://localhost:8000

For technical support or deployment assistance, refer to the troubleshooting section above.

🚀 Happy Bookkeeping! 🇨🇿