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Platform Architecture

Layer Descriptions​

1. Client Layer​

  • Host Client (Angular)

    • Administrative interface
    • System configuration
    • Tenant management
    • Feature management

  • Tenant Client (Angular)

    • Tenant-specific operations
    • Module-based structure
    • Role-based access
    • Localized interface

2. API Layer​

  • Host API

    • System administration
    • Tenant creation/management
    • Global configurations
    • System-wide features

  • Tenant API

    • Business operations
    • Module-specific endpoints
    • Tenant-scoped data
    • Feature-based access

  • WebHooks

    • Event notifications
    • Integration points
    • External system communication

3. Domain Layer​

  • Core Entities

    • Business models
    • Validation rules
    • Domain logic
    • Cross-cutting concerns

  • Permissions

    • Access control definitions
    • Role mappings
    • Feature flags
    • Security constraints

4. Framework Layer​

  • Base Types

    • Abstract classes
    • Interfaces
    • Common utilities
    • Core functionality

  • Cross-Cutting Concerns

    • Multi-tenancy
    • Localization
    • Authentication
    • Authorization
    • Background processing

5. Infrastructure Layer​

  • Data Access

    • Entity configurations
    • Database context
    • Migrations
    • Data seeding

  • Integration Services

    • Email service
    • SMS service
    • WhatsApp integration
    • File storage

Key Features​

Multi-Tenancy​

  • Tenant isolation
  • Shared database with filtered queries
  • Tenant-specific configurations
  • Resource separation

Authorization​

  • Role-based access control
  • Permission management
  • Feature-based authorization
  • Tenant-specific roles

Localization​

  • Multi-language support
  • Culture-based formatting
  • Resource management
  • RTL/LTR handling

Background Processing​

  • Job scheduling
  • Queue management
  • Long-running tasks
  • Retry policies

Data Flow​

Request Processing​

  1. Client initiates request
  2. API layer receives request
  3. Authorization check
  4. Tenant context application
  5. Request handling
  6. Data access
  7. Response formatting
  8. Client response

Caching Strategy​

  1. Check cache first
  2. Database query if needed
  3. Cache update
  4. Response delivery

Error Handling​

  1. Global exception handling
  2. Tenant-specific error messages
  3. Localized error responses
  4. Client-friendly formatting

Module Development​

Server-Side Structure​

ModuleName/
├── Entities/
├── Configurations/
├── Endpoints/
│   ├── Create/
│   ├── Update/
│   ├── Delete/
│   └── List/
├── Handlers/
└── Validators/

Client-Side Structure​

module-name/
├── components/
├── services/
├── models/
├── guards/
└── shared/

Best Practices​

Architecture​

  1. Follow separation of concerns
  2. Implement SOLID principles
  3. Use dependency injection
  4. Maintain layer isolation

Development​

  1. Follow naming conventions
  2. Implement proper validation
  3. Use strongly-typed entities
  4. Follow REST principles

Security​

  1. Implement proper authentication
  2. Use authorization attributes
  3. Validate all inputs
  4. Implement proper logging