
===============================
SAAS BACKEND PROJECT FLOW
===============================

PROJECT TYPE:
-------------
Multi-Tenant SaaS Backend Architecture

TECH STACK:
-----------
- Node.js
- Express.js
- MongoDB
- JWT Authentication
- RBAC (Role Based Access Control)

====================================================
MULTI-TENANT SAAS FLOW
====================================================

PLATFORM USER:
--------------
Internal SaaS users.

Examples:
- Super Admin
- Sales Team
- Support Team

Can manage:
- All companies
- Subscriptions
- Payments
- Products
- Trials

----------------------------------------------------

COMPANY USER:
-------------
Belongs to specific company only.

Examples:
- HR
- Employee
- Manager
- Accountant

Can access:
Only their company data.

====================================================
ROLE & PERMISSION FLOW
====================================================

Platform creates permissions
        ↓
Company creates roles
        ↓
Permissions assigned to roles
        ↓
Users assigned roles

Example:

Role:
- HR Manager

Permissions:
- CREATE_EMPLOYEE
- UPDATE_EMPLOYEE
- VIEW_EMPLOYEE

====================================================
SUBSCRIPTION FLOW
====================================================

Company selects plan
        ↓
Subscription created
        ↓
Payment gateway
        ↓
Payment verification
        ↓
Subscription activated
        ↓
Modules enabled

====================================================
SECURITY FLOW
====================================================

Request
   ↓
JWT Authentication
   ↓
Role Validation
   ↓
Permission Check
   ↓
Subscription Check
   ↓
API Access

====================================================
RECOMMENDED FUTURE MODULES
====================================================

- subscriptions
- payments
- invoices
- plans
- auditLogs
- notifications
- activityLogs
- coupons
- webhooks

====================================================
PROFESSIONAL SAAS ARCHITECTURE
====================================================

Auth
   ↓
Tenant Identification
   ↓
Subscription Validation
   ↓
RBAC
   ↓
Module Access
   ↓
Business Logic
   ↓
Audit Logging

====================================================
SUMMARY
====================================================

This project is a:

Multi-Tenant Modular SaaS Backend

Features:
- Authentication
- Role-Based Access
- Multi-company architecture
- Subscription management
- Payment integration
- Module-based access
- Protected APIs
- Scalable backend structure

Architecture Pattern:
Route → Middleware → Controller → Service → Model → Database

TrialRequest
    ↓
TrialUser
    ↓
Trial Login
    ↓
Trial Expire
    ↓
Choose Plan
    ↓
Payment
    ↓
Create Company
    ↓
Create PlatformUser
    ↓
Create Subscription
    ↓
Create Default Role
    ↓
Assign Permissions
    ↓
Platform Login
    ↓
Create Users