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* Department Controller
* Handles department management for tenants
*/
const { pool } = require('../config/database');
const { logger } = require('../config/logger');
class DepartmentController {
/**
* Get all departments for tenant
* GET /api/tenant/departments
*/
static async getDepartments(req, res) {
try {
const tenantId = req.tenantId || req.user?.tenantId || req.user?.tenant_id;
if (!tenantId) {
return res.status(400).json({ success: false, message: 'Tenant ID not found' });
}
const [departments] = await pool.execute(
'SELECT id, tenant_id, name, description FROM departments WHERE tenant_id = ? ORDER BY name ASC',
[tenantId]
);
logger.info(`Departments listed for tenant ${tenantId}`, { count: departments.length });
res.json({
success: true,
data: departments
});
} catch (error) {
logger.error('Error listing departments', { error: error.message });
res.status(500).json({ success: false, message: 'Internal server error' });
}
}
/**
* Get single department
* GET /api/tenant/departments/:id
*/
static async getDepartment(req, res) {
try {
const tenantId = req.tenantId || req.user?.tenantId || req.user?.tenant_id;
const { id } = req.params;
if (!tenantId) {
return res.status(400).json({ success: false, message: 'Tenant ID not found' });
}
const [departments] = await pool.execute(
'SELECT id, tenant_id, name, description FROM departments WHERE id = ? AND tenant_id = ?',
[id, tenantId]
);
if (departments.length === 0) {
return res.status(404).json({ success: false, message: 'Department not found' });
}
res.json({
success: true,
data: departments[0]
});
} catch (error) {
logger.error('Error getting department', { error: error.message });
res.status(500).json({ success: false, message: 'Internal server error' });
}
}
/**
* Create new department
* POST /api/tenant/departments
* NOTE: This method should be called AFTER checkResourceLimit('departments') middleware
*/
static async createDepartment(req, res) {
try {
const tenantId = req.tenantId || req.user?.tenantId || req.user?.tenant_id;
const { name, description } = req.body;
if (!tenantId) {
return res.status(400).json({ success: false, message: 'Tenant ID not found' });
}
if (!name) {
return res.status(400).json({ success: false, message: 'Department name is required' });
}
// Check if name exists
const [existing] = await pool.execute(
'SELECT id FROM departments WHERE name = ? AND tenant_id = ?',
[name, tenantId]
);
if (existing.length > 0) {
return res.status(400).json({ success: false, message: 'Department name already exists' });
}
// Create department (limit already checked by middleware)
const [result] = await pool.execute(
'INSERT INTO departments (tenant_id, name, description) VALUES (?, ?, ?)',
[tenantId, name, description || null]
);
// Get created department
const [departments] = await pool.execute(
'SELECT id, tenant_id, name, description FROM departments WHERE id = ?',
[result.insertId]
);
logger.info(`Department created for tenant ${tenantId}`, { departmentId: result.insertId, name });
res.status(201).json({
success: true,
message: 'Department created successfully',
data: departments[0]
});
} catch (error) {
logger.error('Error creating department', { error: error.message });
res.status(500).json({ success: false, message: 'Internal server error' });
}
}
/**
* Update department
* PUT /api/tenant/departments/:id
*/
static async updateDepartment(req, res) {
try {
const tenantId = req.tenantId || req.user?.tenantId || req.user?.tenant_id;
const { id } = req.params;
const { name, description } = req.body;
if (!tenantId) {
return res.status(400).json({ success: false, message: 'Tenant ID not found' });
}
if (!name) {
return res.status(400).json({ success: false, message: 'Department name is required' });
}
// Check if department exists
const [existing] = await pool.execute(
'SELECT id FROM departments WHERE id = ? AND tenant_id = ?',
[id, tenantId]
);
if (existing.length === 0) {
return res.status(404).json({ success: false, message: 'Department not found' });
}
// Check if name exists (excluding current department)
const [nameCheck] = await pool.execute(
'SELECT id FROM departments WHERE name = ? AND tenant_id = ? AND id != ?',
[name, tenantId, id]
);
if (nameCheck.length > 0) {
return res.status(400).json({ success: false, message: 'Department name already exists' });
}
// Update department
await pool.execute(
'UPDATE departments SET name = ?, description = ? WHERE id = ? AND tenant_id = ?',
[name, description || null, id, tenantId]
);
// Get updated department
const [departments] = await pool.execute(
'SELECT id, tenant_id, name, description FROM departments WHERE id = ?',
[id]
);
logger.info(`Department updated for tenant ${tenantId}`, { departmentId: id, name });
res.json({
success: true,
message: 'Department updated successfully',
data: departments[0]
});
} catch (error) {
logger.error('Error updating department', { error: error.message });
res.status(500).json({ success: false, message: 'Internal server error' });
}
}
/**
* Delete department
* DELETE /api/tenant/departments/:id
*/
static async deleteDepartment(req, res) {
try {
const tenantId = req.tenantId || req.user?.tenantId || req.user?.tenant_id;
const { id } = req.params;
if (!tenantId) {
return res.status(400).json({ success: false, message: 'Tenant ID not found' });
}
// Check if department exists
const [departments] = await pool.execute(
'SELECT name FROM departments WHERE id = ? AND tenant_id = ?',
[id, tenantId]
);
if (departments.length === 0) {
return res.status(404).json({ success: false, message: 'Department not found' });
}
// Check if department has users
const [users] = await pool.execute(
'SELECT COUNT(*) as count FROM users WHERE department = ? AND tenant_id = ?',
[departments[0].name, tenantId]
);
if (users[0].count > 0) {
return res.status(400).json({
success: false,
message: 'Cannot delete department with assigned users'
});
}
// Delete department
await pool.execute(
'DELETE FROM departments WHERE id = ? AND tenant_id = ?',
[id, tenantId]
);
logger.info(`Department deleted for tenant ${tenantId}`, { departmentId: id });
res.json({
success: true,
message: 'Department deleted successfully'
});
} catch (error) {
logger.error('Error deleting department', { error: error.message });
res.status(500).json({ success: false, message: 'Internal server error' });
}
}
}
module.exports = DepartmentController;
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