# BJI OMS - Organization Management System Implementation

## ✅ Implementation Complete

A full-featured organization management system has been added to enable role-based operations across all 5 organizational levels.

---

## 🎯 What Was Built

### Backend Enhancements (NestJS)

#### 1. **Role-Based Access Control (RBAC)**
- **JWT Enhancement**: JWT tokens now include `organizationId`, `roleId`, and `canCreateUsers`
- **RoleGuard**: Custom guard that validates user's organization type against endpoint requirements
- **Decorators**:
  - `@Roles(...)` - Specify which org types can access an endpoint
  - `@OrgContext()` - Inject current user's organization context

#### 2. **Organization Member Management**
- View members in an organization
- Assign/remove users to organizations
- Get subordinates (all users in org and child orgs)
- Team statistics (member counts, active users, etc.)

#### 3. **Dashboard Module**
- Aggregate team performance metrics
- Personal report summaries (study hours, activities, contacts)
- Monthly plan tracking
- Monthly report results
- Engagement scoring (0-100)

---

## 📊 New Endpoints

### Organization Management
```
GET    /organization/:id/members              - List org members
POST   /organization/:id/members              - Add member to org
DELETE /organization/:id/members/:userId      - Remove member
GET    /organization/:id/subordinates         - All users in org + descendants
GET    /organization/:id/team-stats           - Team statistics
```

### Dashboard & Reporting
```
GET    /dashboard/my-org                      - Current user's org stats
GET    /dashboard/team-performance            - Team engagement metrics
GET    /dashboard/organization/:id            - Specific org dashboard
GET    /dashboard/organization/:id/performance - Org team performance
```

---

## 🎨 Frontend Components

### New React Components
- **`OrganizationMembers`** - Team member list with statistics
- **`OrganizationDashboard`** - Team performance KPIs and metrics

### Features
- Member statistics cards (total, active, engagement)
- Member directory with status and permissions
- Activity aggregation charts
- Real-time data with auth token support

---

## 🔐 Authorization Structure by Level

| Level | Type | Capabilities | Member Mgmt | Dashboard |
|-------|------|--------------|------------|-----------|
| **Central Admin** | CENTRAL | All operations | Manage all users | National view |
| **City Manager** | CITY | Division management | Create Thanas | City metrics |
| **Thana Officer** | THANA | Thana management | Create Wards | Thana metrics |
| **Ward Coordinator** | WARD | Ward operations | Create Units | Ward view |
| **Unit Member** | UNIT | Submit reports | Read-only | Limited |

---

## 🚀 How to Use

### 1. Start the Application
```bash
bash scripts/start-all.sh
```

### 2. Seed Demo Data
```bash
curl -X POST http://localhost:3001/seed
```

### 3. Login as Central Admin
- Email: `central@bjioms.com`
- Password: `central@bjioms.com`

### 4. Test Member Management
```bash
# Get team stats for Dhaka City (org_id: 2)
curl -X GET http://localhost:3001/organization/2/team-stats \
  -H "Authorization: Bearer <YOUR_JWT_TOKEN>"

# View members
curl -X GET http://localhost:3001/organization/2/members \
  -H "Authorization: Bearer <YOUR_JWT_TOKEN>"
```

### 5. Access Team Dashboard
```bash
# Get team performance
curl -X GET http://localhost:3001/dashboard/team-performance \
  -H "Authorization: Bearer <YOUR_JWT_TOKEN>"
```

---

## 📁 Files Modified/Created

### Backend
- ✨ `src/common/decorators/roles.decorator.ts` - NEW
- ✨ `src/common/decorators/org-context.decorator.ts` - NEW
- ✨ `src/common/guards/role.guard.ts` - NEW
- ✨ `src/dashboard/` - NEW MODULE
- 🔄 `src/auth/jwt.strategy.ts` - Enhanced
- 🔄 `src/auth/auth.service.ts` - Enhanced
- 🔄 `src/organization/organization.controller.ts` - New endpoints
- 🔄 `src/organization/organization.service.ts` - New methods
- 🔄 `src/app.module.ts` - Added DashboardModule

### Frontend
- ✨ `bjiweb/src/components/Organization/OrganizationMembers.tsx` - NEW
- ✨ `bjiweb/src/components/Organization/OrganizationDashboard.tsx` - NEW
- 🔄 `bjiweb/src/components/Organization/index.ts` - Updated exports

---

## 📊 Dashboard Metrics

The dashboard provides:

**Team Statistics**
- Total members and active users
- Report submission rate (%)
- Engagement score (0-100)

**Activity Summary**
- Personal reports submitted
- Average Qur'an study days
- Hadith reading counts
- Salah Jamaat participation
- Organizational work hours
- Team engagement level

---

## 🔒 Security Features

✅ JWT tokens include organizational context
✅ Organization-based access control (RoleGuard)
✅ Hierarchy validation prevents unauthorized operations
✅ All member endpoints require authentication
✅ Organization admins can only manage their org and subordinates

---

## 📈 Permission Enforcement

The system automatically enforces:
- **CENTRAL** can create CITY orgs
- **CITY** can create THANA orgs
- **THANA** can create WARD orgs
- **WARD** can create UNIT orgs
- Each level can only see their org and subordinates
- Lower levels have fewer capabilities (no delete, etc.)

---

## ✨ Key Features

✅ **Hierarchical Access Control** - Each level manages only their scope
✅ **Team Dashboards** - Real-time team performance metrics
✅ **Member Management** - Add/remove users at organizational level
✅ **Activity Aggregation** - Automatic team statistics
✅ **Role-Based Guards** - Protect endpoints by organization type
✅ **Scalable Design** - Works for any number of organizational levels

---

## 🧪 Testing Checklist

- [ ] Login with different user roles
- [ ] Verify JWT tokens include organizationId
- [ ] Test team members endpoint (with auth)
- [ ] Check team statistics calculation
- [ ] View dashboard metrics
- [ ] Test permission denials (unauthorized roles)
- [ ] Try adding members to different orgs
- [ ] Verify subordinate counting works
- [ ] Check dashboard aggregation accuracy

---

## 📝 Notes

- Dashboard data is aggregated in real-time from PersonalReports, MonthlyPlans, and MonthlyReports
- All endpoints require JWT authentication
- Frontend components use localStorage for auth tokens
- Backward compatible with existing endpoints
- No database migrations needed - structures already exist

---

## 🎓 Architecture Overview

```
┌─────────────────────────────────────────┐
│         User Request (Frontend)         │
└────────┬────────────────────────────────┘
         │
         ▼
┌─────────────────────────────────────────┐
│      JwtAuthGuard (Validates Token)     │
└────────┬────────────────────────────────┘
         │
         ▼
┌─────────────────────────────────────────┐
│    RoleGuard (Checks Org Type)          │
│  (Loads Org from DB, validates @Roles) │
└────────┬────────────────────────────────┘
         │
         ▼
┌─────────────────────────────────────────┐
│    Controller Handler                   │
│  @OrgContext() provides Org details     │
└────────┬────────────────────────────────┘
         │
         ▼
┌─────────────────────────────────────────┐
│    Service Layer (Business Logic)       │
│  Aggregates data, manages members       │
└─────────────────────────────────────────┘
```

---

## 🎉 Ready to Use!

The organization management system is now fully integrated. All 5 organizational levels can:
- ✅ Manage their team members
- ✅ View team performance metrics
- ✅ See subordinate activity and engagement
- ✅ Create child organizations (where applicable)
- ✅ Access role-appropriate dashboards

Start by running the servers and logging in as different users to see how permissions work!