# Worker Team Assignment - Complete ✅

## Overview
Added team assignment functionality to workers, allowing each worker to be assigned to a specific team.

---

## Database Changes

### Schema Updates
**Worker Model:**
- Added `teamId` field (optional String)
- Added `team` relation to Team model
- Workers can now be assigned to a team

**Team Model:**
- Added `workers` relation (one-to-many)
- Teams can now have multiple workers

### Migration
```bash
npx prisma db push
```
- Schema successfully updated
- New fields added to database
- Existing workers have `teamId` as null (no team)

---

## UI Changes

### 1. Workers List Page ✅

**New Column Added:**
- "Team" column shows worker's assigned team
- Displays team name as colored badge (blue)
- Shows "No team" in italics if worker has no team
- Includes team data in query with `include: { team: true }`

**Table Structure:**
```
Emp No | Name | Email | Job Position | Team | Status | Actions
```

---

### 2. Create Worker Form ✅

**New Field Added:**
- "Team" dropdown selector
- Shows all available teams
- Optional field (can select "No Team")
- Loads teams from API on page load

**Form Fields:**
1. Employee Number *
2. First Name *
3. Surname *
4. Email
5. Phone
6. Job Position *
7. **Team** (NEW)
8. Status *

---

### 3. Edit Worker Form ✅

**New Field Added:**
- "Team" dropdown selector
- Shows current team selection
- Can change team or remove team assignment
- Loads teams from API on page load
- Preserves existing team selection

**Features:**
- Displays current team if assigned
- Allows changing to different team
- Allows removing team (select "No Team")
- Updates worker's team assignment

---

## API Integration

### Existing Endpoints Used
- `GET /api/teams` - Fetch all teams for dropdown
- `POST /api/admin/workers` - Create worker with team
- `PUT /api/admin/workers/[id]` - Update worker with team
- `GET /api/admin/workers/[id]` - Get worker with team

### Data Flow

**Create Worker:**
```typescript
{
  empNo: "EMP001",
  firstName: "John",
  surname: "Doe",
  email: "john@example.com",
  phone: "555-0100",
  jobPosition: "Blow Moulder Level 1",
  teamId: "team-id-here", // or "" for no team
  status: "active"
}
```

**Worker Response:**
```typescript
{
  id: "worker-id",
  empNo: "EMP001",
  firstName: "John",
  surname: "Doe",
  teamId: "team-id",
  team: {
    id: "team-id",
    name: "Red Team"
  },
  // ... other fields
}
```

---

## Features

### Team Assignment
- ✅ Workers can be assigned to a team
- ✅ Workers can have no team (optional)
- ✅ Workers can be reassigned to different teams
- ✅ Team assignment can be removed

### Visual Indicators
- ✅ Team badge in workers list (blue)
- ✅ "No team" indicator for unassigned workers
- ✅ Dropdown shows all available teams
- ✅ Clear visual distinction

### Data Integrity
- ✅ Optional relationship (workers can exist without team)
- ✅ Foreign key constraint (teamId references Team.id)
- ✅ Cascade behavior handled by Prisma
- ✅ Existing workers not affected (null teamId)

---

## Use Cases

### Organizing Workers
- Group workers by their primary team
- Track team composition
- Manage team assignments
- View team members

### Shift Planning
- See which workers belong to which team
- Assign shifts based on team membership
- Balance workload across teams
- Track team availability

### Reporting
- Generate team-based reports
- Analyze team performance
- Track team metrics
- Monitor team assignments

---

## Files Modified

### Database
1. ✅ `prisma/schema.prisma`
   - Added `teamId` and `team` to Worker model
   - Added `workers` to Team model

### Pages
1. ✅ `app/admin/workers/page.tsx`
   - Added Team column to table
   - Included team data in query
   - Display team badge or "No team"

2. ✅ `app/admin/workers/create/page.tsx`
   - Added team dropdown field
   - Fetch teams on load
   - Include teamId in form data

3. ✅ `app/admin/workers/[id]/page.tsx`
   - Added team dropdown field
   - Fetch teams on load
   - Load current team selection
   - Include teamId in update

---

## Testing Checklist

### Create Worker
- [ ] Create worker with team selected
- [ ] Create worker with no team
- [ ] Verify team appears in workers list
- [ ] Verify "No team" shows for unassigned

### Edit Worker
- [ ] Edit worker and change team
- [ ] Edit worker and remove team
- [ ] Edit worker and add team
- [ ] Verify changes persist

### Workers List
- [ ] Team column displays correctly
- [ ] Team badges show proper colors
- [ ] "No team" shows for unassigned
- [ ] All workers display properly

### Data Integrity
- [ ] Existing workers still work (null teamId)
- [ ] Team deletion doesn't break workers
- [ ] Team changes reflect immediately
- [ ] No orphaned references

---

## Future Enhancements

### Possible Additions
- [ ] Filter workers by team
- [ ] Bulk team assignment
- [ ] Team capacity limits
- [ ] Team member count in teams list
- [ ] Team-based worker statistics
- [ ] Team assignment history
- [ ] Automatic team assignment rules
- [ ] Team balance recommendations

---

## Summary

✅ **Database schema updated with team relationship**
✅ **Workers list shows team column**
✅ **Create form includes team selector**
✅ **Edit form includes team selector**
✅ **Team assignment is optional**
✅ **Visual indicators for team status**

Workers can now be organized by teams, making it easier to manage team composition and plan shifts!