🚀 django_resaas

django_resaas é um framework modular para construção de aplicações SaaS multi-tenant em Django, com:

🔐 Controle de permissões (RBAC)
🏢 Multi-tenant (Entity / Branch)
🧩 Módulos ativáveis por cliente
💰 Billing por plano (SaaS ready)
♻️ Soft delete + restore
🔎 Busca dinâmica automática
⚡ BaseAPIView inteligente (DRF)

🧠 Arquitetura

User
 ↓
Person
 ↓
Employee (RH)
 ↓
Entity (tenant)
 ↓
Branch
 ↓
Groups + Permissões

🧩 Conceitos principais

🏢 Entity (Tenant)

Representa o cliente (empresa)

🏬 Branch

Unidade da entity

👤 Person

Dados humanos (name, email, etc.)

🔐 User

Autenticação

👥 BranchUserGroup

Relaciona:

User
Branch
Group (Django)

👉 Permite múltiplos groups por branch

🔐 Sistema de Permissões (RBAC)

Baseado em:

User + Group + Permission (Django)
+ contexto (Entity + Branch)

Headers obrigatórios:

ET → entity_type
E  → entity
S  → branch
G  → group
L  → language

🧱 BaseModel

Todos os models herdam:

from django_resaas import BaseModel

Inclui:

entity
branch
created_at / updated_at
soft delete
created_by / updated_by

🔁 Soft Delete

obj.delete()        # soft delete
obj.restore()       # restore
obj.hard_delete()   # delete real

Managers disponíveis:

Model.objects          # ativos
Model.deleted_objects  # apagados
Model.all_objects      # todos

⚡ BaseAPIView

CRUD automático com:

multi-tenant automático
permissões automáticas
search dinâmica
soft delete
restore
hard delete

Uso:

from django_resaas import BaseAPIView, register_view

@register_view(module="hr")
class EmployeeView(BaseAPIView):
    queryset = Employee.objects.all()
    serializer_class = EmployeeSerializer

🔍 Busca dinâmica

GET /api/employees/?search=joao

Busca automaticamente em:

name
email
código
relações (FK)

🧩 Sistema de Módulos

Permite ativar/desativar funcionalidades por cliente.

Models:

App
EntityApp

Exemplo:

Entity	Módulo	Estado
Empresa A	RH	✅
Empresa A	CRM	❌

🔐 Proteção automática por módulo

@register_view(module="hr")
class EmployeeView(BaseAPIView):
    ...

👉 Se módulo não estiver ativo → acesso bloqueado

💰 Billing (SaaS)

Models:

Plano
PlanoApp
EntityPlano

Fluxo:

Plano → módulos → EntityPlano → ativa módulos automaticamente

🔄 Sync automático de módulos

Ao mudar plano:

sync_apps_entity(entity)

📦 BaseSerializer

Proteção automática de arquivos:

{
  "file": {
    "url": "...",
    "name": "...",
    "ext": "pdf",
    "size": 12345
  }
}

🌐 Middleware

TenantContextMiddleware

Captura headers:

request.entity_id
request.branch_id
request.group_id

FrontEndMiddleware

Protege acesso por:

chave frontend (FEK/FEP)
permissões por URL
permissões por método HTTP

🧪 Exemplo completo

Model

from django_resaas import BaseModel

class Employee(BaseModel):
    person = models.ForeignKey('django_resaas.Person', on_delete=models.CASCADE)
    cargo = models.CharField(max_length=100)

Serializer

from django_resaas import BaseSerializer

class EmployeeSerializer(BaseSerializer):
    class Meta:
        model = Employee
        fields = "__all__"

View

from django_resaas import BaseAPIView, register_view

@register_view(module="hr")
class EmployeeView(BaseAPIView):
    queryset = Employee.objects.all()
    serializer_class = EmployeeSerializer

⚙️ Instalação

pip install django_resaas

ou local:

pip install -e .

🔧 Configuração

INSTALLED_APPS

INSTALLED_APPS = [
    "django_resaas",
    "hr",
]

Middleware

MIDDLEWARE = [
    "django_resaas.core.middleware.tenant.TenantContextMiddleware",
    "django_resaas.core.middleware.frontend.FrontEndMiddleware",
]

🚀 Roadmap

Integração com Stripe
Dashboard de billing
Auto-router
Auditoria de ações
Logs multi-tenant
Cache de permissões (Redis)

🧠 Filosofia

"Construir SaaS não deve ser repetitivo."

django_resaas resolve:

multi-tenant
permissões
módulos
billing

👉 para você focar no negócio

🤝 Contribuição

PRs são bem-vindos 🚀

📄 Licença

MIT License

👨‍💻 Autor

Metano Chavana

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