# HR Management System - README

Welcome to the HR Management System for the Steve project! This document provides a quick overview and links you to the comprehensive documentation.

## 🎯 What Is This?

A complete HR Management System with:
- **Employee Management** (Already Implemented ✅)
- **Salary Templates** (Planned)
- **Shift Management** (Planned)
- **Attendance Tracking** (Planned)
- **Shift-Based Payroll Processing** (Planned)

## ⚡ Quick Links

| Need | File | Purpose |
|:---|:---|:---|
| **Start Here** | `HR_DOCUMENTATION_INDEX.md` | Navigation guide |
| **Quick Overview** | `HR_SKILL_SUMMARY.md` | Feature matrix & overview |
| **Implementation** | `HRM_IMPLEMENTATION_GUIDE.md` | Phase-by-phase guide |
| **Database Info** | `HRM_DATABASE_SCHEMA.md` | Schema reference |
| **Project Overview** | `projectskill.md` | Complete project docs |

## 🚀 Quick Start (5 Minutes)

### 1. Apply Database Migration
```bash
mysql -u root -p steve < database/migrations/hrm_extensions.sql
```

### 2. Verify Tables
```bash
mysql -u root -p -D steve -e "SHOW TABLES LIKE 'tbl_%';"
```

You should see 8 new tables:
- tbl_salary_templates
- tbl_employee_salary_templates
- tbl_shifts
- tbl_employee_shifts
- tbl_attendance
- tbl_attendance_summary
- tbl_payroll
- tbl_payroll_adjustments

### 3. Read the Documentation
Start with: **HR_DOCUMENTATION_INDEX.md**

## 📊 Current Status

| Component | Status | Files |
|:---|:---|:---|
| Employee Management | ✅ Implemented | `employee-add.php`, `employee-list.php` |
| Salary Templates | 📋 Planned | API structure designed |
| Shifts | 📋 Planned | 4 sample shifts pre-loaded |
| Attendance | 📋 Planned | Schema ready |
| Payroll | 📋 Planned | Calculation logic designed |

**Overall Progress:** 25% (Database & Documentation Complete)

## 🗄️ Database Tables Created

Run this to see all 8 new tables:
```sql
SELECT TABLE_NAME FROM INFORMATION_SCHEMA.TABLES
WHERE TABLE_SCHEMA = 'steve' AND TABLE_NAME LIKE 'tbl_%';
```

## 📁 Documentation Files

All documentation is in the root directory:

```
steve/
├── README_HR_SYSTEM.md ..................... This file
├── HR_DOCUMENTATION_INDEX.md .............. Navigation guide
├── HR_SKILL_SUMMARY.md .................... Quick reference
├── HRM_IMPLEMENTATION_GUIDE.md ............ How to implement
├── HRM_DATABASE_SCHEMA.md ................. Database reference
├── projectskill.md ........................ Complete project docs
└── database/migrations/
    └── hrm_extensions.sql ................. Database migration
```

## 🎯 Implementation Phases

### Phase 1: Salary Templates (Week 1)
- Create salary template CRUD pages
- Implement template calculations
- Assign templates to employees

### Phase 2: Employee-Template Assignment (Week 1-2)
- Create assignment interface
- Track template changes
- View assignment history

### Phase 3: Shift Management (Week 2)
- Define shifts and timings
- Assign shifts to employees
- Calculate shift allowances

### Phase 4: Attendance Tracking (Week 3)
- Mark daily attendance
- Bulk CSV import
- Monthly summary calculation

### Phase 5: Payroll Processing (Week 4)
- Auto-generate payroll
- Generate payslips (PDF)
- Track payroll status

## 💡 Key Features

### For HR Managers
- Create and manage salary templates
- Assign templates to employees
- Track attendance records
- Generate monthly payroll
- Print payslips
- View payroll reports

### For Employees
- View assigned salary details
- See payslip PDFs
- Track attendance

### For Admins
- Full access to all HR data
- Manage all master data
- Run payroll approval workflow
- Generate HR reports

## 🔐 Security Notes

⚠️ **Important:** Passwords are currently stored in plaintext. Before using in production, implement password hashing:

```php
// Change from:
$stmt->bindValue(':password', $_POST['password']);

// To:
$stmt->bindValue(':password', password_hash($_POST['password'], PASSWORD_BCRYPT));
```

## 🧪 Testing

### Test Data Already Included:
- 4 Shifts (Morning, Evening, Night, Flexible)
- 4 Salary Templates (Junior, Senior, Manager, Executive)

### Quick Test:
```sql
-- Check shifts
SELECT * FROM tbl_shifts;

-- Check salary templates
SELECT * FROM tbl_salary_templates;

-- Check your existing employees
SELECT id, name, email FROM tbl_employees;
```

## 📖 Documentation Guide

### For Quick Info
→ Use **HR_SKILL_SUMMARY.md**
- Features overview
- File structure
- Database tables
- Tech stack

### For Implementation
→ Use **HRM_IMPLEMENTATION_GUIDE.md**
- Step-by-step phases
- Form fields
- API endpoints
- Code examples

### For Database Queries
→ Use **HRM_DATABASE_SCHEMA.md**
- Table definitions
- Field descriptions
- Relationships
- Useful SQL queries

### For Navigation
→ Use **HR_DOCUMENTATION_INDEX.md**
- Find information quickly
- Cross-references
- Learning paths

## 🛠️ API Pattern (Existing Employee Module)

All new APIs follow this pattern from the existing employee module:

```
api/[module]/
├── create.php .................. POST - Insert record
├── read.php .................... GET - List records (DataTable)
├── read_single.php ............. GET - Single record
├── update.php .................. POST - Update record
└── delete.php .................. POST - Delete record

Response Format:
{
  "status": "success|error",
  "message": "...",
  "data": {...}
}
```

## 📱 Next Steps

1. **Today**
   - [ ] Read this file
   - [ ] Review HR_DOCUMENTATION_INDEX.md
   - [ ] Apply database migration
   - [ ] Verify tables created

2. **This Week**
   - [ ] Read HRM_IMPLEMENTATION_GUIDE.md
   - [ ] Plan Phase 1 implementation
   - [ ] Set up development environment

3. **Next Week**
   - [ ] Start Phase 1 (Salary Templates)
   - [ ] Create frontend pages
   - [ ] Implement APIs
   - [ ] Test thoroughly

## ❓ Common Questions

**Q: Do I need to do all phases?**
A: Yes, each phase builds on the previous one. Start with Phase 1.

**Q: What if I only need payroll?**
A: You still need Phases 1-4 as they provide the data for payroll.

**Q: Can I customize the salary components?**
A: Yes! The database schema is flexible - add or remove columns as needed.

**Q: How long will it take?**
A: Estimated 4 weeks for full implementation (1 week per phase).

**Q: Can I run all phases in parallel?**
A: No, each phase depends on the previous one's database structure.

## 🆘 Troubleshooting

### Migration Failed?
```bash
# Check if tables already exist
mysql -u root -p -D steve -e "SHOW TABLES LIKE 'tbl_salary%';"

# If tables exist, check structure
mysql -u root -p -D steve -e "DESC tbl_salary_templates;"
```

### Can't connect to database?
```bash
# Check MySQL is running
mysql -u root -p -e "SELECT 1;"

# Verify database exists
mysql -u root -p -e "SHOW DATABASES;" | grep steve
```

### Need to revert migration?
```bash
# Drop tables (be careful!)
mysql -u root -p -D steve -e "DROP TABLE IF EXISTS
  tbl_payroll_adjustments,
  tbl_payroll,
  tbl_attendance_summary,
  tbl_attendance,
  tbl_employee_shifts,
  tbl_shifts,
  tbl_employee_salary_templates,
  tbl_salary_templates;"
```

## 📞 Documentation Support

- **Technical Questions**: See HRM_DATABASE_SCHEMA.md
- **Implementation Questions**: See HRM_IMPLEMENTATION_GUIDE.md
- **Feature Overview**: See HR_SKILL_SUMMARY.md
- **Navigation Help**: See HR_DOCUMENTATION_INDEX.md

## 📚 External Resources

The system uses these open-source libraries:
- Bootstrap 5 (UI Framework)
- jQuery 3.x (JavaScript)
- DataTables (Table Pagination)
- Select2 (Dropdown Enhancement)

## ✅ Verification Checklist

After applying migration, verify:

- [ ] All 8 tables exist
- [ ] Foreign keys are set up correctly
- [ ] Sample data is loaded (shifts, templates)
- [ ] Indexes are created
- [ ] No errors in MySQL log

Run this to check:
```bash
mysql -u root -p steve << EOF
SHOW TABLES LIKE 'tbl_%';
SELECT COUNT(*) FROM tbl_shifts;
SELECT COUNT(*) FROM tbl_salary_templates;
SHOW KEYS FROM tbl_payroll;
EOF
```

## 📝 Document Versions

| Document | Version | Date | Status |
|:---|:---|:---|:---|
| projectskill.md | 1.0 | 2026-02-16 | ✅ Active |
| HRM_IMPLEMENTATION_GUIDE.md | 1.0 | 2026-02-16 | ✅ Active |
| HRM_DATABASE_SCHEMA.md | 1.0 | 2026-02-16 | ✅ Active |
| HR_SKILL_SUMMARY.md | 1.0 | 2026-02-16 | ✅ Active |
| HR_DOCUMENTATION_INDEX.md | 1.0 | 2026-02-16 | ✅ Active |
| hrm_extensions.sql | 1.0 | 2026-02-16 | ✅ Active |

## 🎓 Learning Objectives

After completing this system, you will understand:
- ✓ Database schema design for HR systems
- ✓ Payroll calculation logic
- ✓ Attendance tracking
- ✓ PHP/PDO API development
- ✓ DataTable integration
- ✓ Form validation patterns

---

**Ready to start?** → Open **HR_DOCUMENTATION_INDEX.md**

**Questions?** → Check **HRM_IMPLEMENTATION_GUIDE.md**

**Need database info?** → See **HRM_DATABASE_SCHEMA.md**

---

**Last Updated:** 2026-02-16
**Status:** ✅ Complete and Ready for Implementation
