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| 1 | <?php |
| 2 | |
| 3 | namespace BuyerKiosk\UserEmployee; |
| 4 | |
| 5 | use PDO; |
| 6 | use Exception; |
| 7 | use DateTime; |
| 8 | |
| 9 | /** |
| 10 | * Manages employee invitations for self-registration |
| 11 | * |
| 12 | * This class handles creating, validating, and managing invitations that allow |
| 13 | * employees to set up their own uf_user accounts. |
| 14 | */ |
| 15 | class EmployeeInvitationManager |
| 16 | { |
| 17 | private PDO $centralDb; |
| 18 | |
| 19 | /** |
| 20 | * Constructor |
| 21 | * |
| 22 | * @param PDO $centralDb Connection to kiosk_users database |
| 23 | */ |
| 24 | public function __construct(PDO $centralDb) |
| 25 | { |
| 26 | $this->centralDb = $centralDb; |
| 27 | } |
| 28 | |
| 29 | /** |
| 30 | * Create an invitation for an employee to set up their account |
| 31 | * |
| 32 | * @param string $typeNum Store identifier |
| 33 | * @param int $employeeId Employee ID from employees table |
| 34 | * @param string $email Email address to send invitation to |
| 35 | * @param int $invitedBy User ID who is creating the invitation |
| 36 | * @param array $defaultGroups Array of group IDs to assign to new user |
| 37 | * @param int $expiresInHours Number of hours until invitation expires (default 72) |
| 38 | * @return array Array with 'invitation' (EmployeeInvitation) and 'url' (string) keys |
| 39 | * @throws Exception If invitation creation fails |
| 40 | */ |
| 41 | public function createInvitation( |
| 42 | string $typeNum, |
| 43 | int $employeeId, |
| 44 | string $email, |
| 45 | int $invitedBy, |
| 46 | array $defaultGroups = [], |
| 47 | int $expiresInHours = 72 |
| 48 | ): array { |
| 49 | // Check if employee already has a linked user account |
| 50 | $linkManager = new UserEmployeeLinkManager($this->centralDb); |
| 51 | if ($linkManager->hasLinkedUser($typeNum, $employeeId)) { |
| 52 | throw new Exception("Employee already has a linked user account"); |
| 53 | } |
| 54 | |
| 55 | // Check if there's already a pending invitation for this employee |
| 56 | $existing = $this->getPendingInvitationsForEmployee($typeNum, $employeeId); |
| 57 | if (!empty($existing)) { |
| 58 | throw new Exception("Employee already has a pending invitation"); |
| 59 | } |
| 60 | |
| 61 | // Get employee data |
| 62 | $storeDb = dbConnectByName('kiosk_' . $typeNum); |
| 63 | $empStmt = $storeDb->prepare( |
| 64 | "SELECT * FROM employees WHERE employeeID = :employeeId" |
| 65 | ); |
| 66 | $empStmt->bindValue(':employeeId', $employeeId, PDO::PARAM_INT); |
| 67 | $empStmt->execute(); |
| 68 | $employee = $empStmt->fetch(PDO::FETCH_ASSOC); |
| 69 | |
| 70 | if (!$employee) { |
| 71 | throw new Exception("Employee not found"); |
| 72 | } |
| 73 | |
| 74 | // Generate secure token |
| 75 | $token = $this->generateToken(); |
| 76 | |
| 77 | // Calculate expiration |
| 78 | $expiresAt = new DateTime(); |
| 79 | $expiresAt->modify("+{$expiresInHours} hours"); |
| 80 | |
| 81 | // Create invitation record |
| 82 | $stmt = $this->centralDb->prepare( |
| 83 | "INSERT INTO employee_invitations |
| 84 | (typeNum, employeeId, email, token, invitedBy, defaultGroups, expiresAt) |
| 85 | VALUES (:typeNum, :employeeId, :email, :token, :invitedBy, :defaultGroups, :expiresAt)" |
| 86 | ); |
| 87 | $stmt->bindValue(':typeNum', $typeNum, PDO::PARAM_STR); |
| 88 | $stmt->bindValue(':employeeId', $employeeId, PDO::PARAM_INT); |
| 89 | $stmt->bindValue(':email', $email, PDO::PARAM_STR); |
| 90 | $stmt->bindValue(':token', $token, PDO::PARAM_STR); |
| 91 | $stmt->bindValue(':invitedBy', $invitedBy, PDO::PARAM_INT); |
| 92 | $stmt->bindValue(':defaultGroups', json_encode($defaultGroups), PDO::PARAM_STR); |
| 93 | $stmt->bindValue(':expiresAt', $expiresAt->format('Y-m-d H:i:s'), PDO::PARAM_STR); |
| 94 | $stmt->execute(); |
| 95 | |
| 96 | $invitationId = (int) $this->centralDb->lastInsertId(); |
| 97 | |
| 98 | // Get the created invitation |
| 99 | $getStmt = $this->centralDb->prepare( |
| 100 | "SELECT * FROM employee_invitations WHERE id = :id" |
| 101 | ); |
| 102 | $getStmt->bindValue(':id', $invitationId, PDO::PARAM_INT); |
| 103 | $getStmt->execute(); |
| 104 | $invitationData = $getStmt->fetch(PDO::FETCH_ASSOC); |
| 105 | |
| 106 | $invitation = EmployeeInvitation::fromRow($invitationData); |
| 107 | |
| 108 | // Generate invitation URL |
| 109 | $baseUrl = isset($_ENV['BASE_URL']) ? $_ENV['BASE_URL'] : 'https://buyerkiosk.com'; |
| 110 | $url = $baseUrl . '/invite/' . $token; |
| 111 | |
| 112 | // Send invitation email |
| 113 | $this->sendInvitationEmail($invitation, $employee, $typeNum); |
| 114 | |
| 115 | return [ |
| 116 | 'invitation' => $invitation, |
| 117 | 'url' => $url |
| 118 | ]; |
| 119 | } |
| 120 | |
| 121 | /** |
| 122 | * Validate an invitation token |
| 123 | * |
| 124 | * @param string $token Invitation token |
| 125 | * @return array|null Invitation data with employee info, or null if invalid |
| 126 | */ |
| 127 | public function validateToken(string $token): ?array |
| 128 | { |
| 129 | $stmt = $this->centralDb->prepare( |
| 130 | "SELECT * FROM employee_invitations WHERE token = :token" |
| 131 | ); |
| 132 | $stmt->bindValue(':token', $token, PDO::PARAM_STR); |
| 133 | $stmt->execute(); |
| 134 | $invitationData = $stmt->fetch(PDO::FETCH_ASSOC); |
| 135 | |
| 136 | if (!$invitationData) { |
| 137 | return null; |
| 138 | } |
| 139 | |
| 140 | $invitation = EmployeeInvitation::fromRow($invitationData); |
| 141 | |
| 142 | // Check if valid |
| 143 | if (!$invitation->isValid()) { |
| 144 | return null; |
| 145 | } |
| 146 | |
| 147 | // Get employee data |
| 148 | $storeDb = dbConnectByName('kiosk_' . $invitation->getTypeNum()); |
| 149 | $empStmt = $storeDb->prepare( |
| 150 | "SELECT * FROM employees WHERE employeeID = :employeeId" |
| 151 | ); |
| 152 | $empStmt->bindValue(':employeeId', $invitation->getEmployeeId(), PDO::PARAM_INT); |
| 153 | $empStmt->execute(); |
| 154 | $employee = $empStmt->fetch(PDO::FETCH_ASSOC); |
| 155 | |
| 156 | if (!$employee) { |
| 157 | return null; |
| 158 | } |
| 159 | |
| 160 | // Get store name |
| 161 | $storeStmt = $this->centralDb->prepare( |
| 162 | "SELECT * FROM stores WHERE typeNum = :typeNum" |
| 163 | ); |
| 164 | $storeStmt->bindValue(':typeNum', $invitation->getTypeNum(), PDO::PARAM_STR); |
| 165 | $storeStmt->execute(); |
| 166 | $store = $storeStmt->fetch(PDO::FETCH_ASSOC); |
| 167 | |
| 168 | return [ |
| 169 | 'invitation' => $invitation->toArray(), |
| 170 | 'employee' => $employee, |
| 171 | 'store' => $store |
| 172 | ]; |
| 173 | } |
| 174 | |
| 175 | /** |
| 176 | * Mark invitation as used |
| 177 | * |
| 178 | * @param string $token Invitation token |
| 179 | * @return bool True if marked successfully |
| 180 | */ |
| 181 | public function markUsed(string $token): bool |
| 182 | { |
| 183 | $stmt = $this->centralDb->prepare( |
| 184 | "UPDATE employee_invitations SET usedAt = NOW() WHERE token = :token" |
| 185 | ); |
| 186 | $stmt->bindValue(':token', $token, PDO::PARAM_STR); |
| 187 | return $stmt->execute(); |
| 188 | } |
| 189 | |
| 190 | /** |
| 191 | * Get pending invitations for a store |
| 192 | * |
| 193 | * @param string $typeNum Store identifier |
| 194 | * @return array Array of EmployeeInvitation objects |
| 195 | */ |
| 196 | public function getPendingInvitations(string $typeNum): array |
| 197 | { |
| 198 | $stmt = $this->centralDb->prepare( |
| 199 | "SELECT * FROM employee_invitations |
| 200 | WHERE typeNum = :typeNum |
| 201 | AND usedAt IS NULL |
| 202 | AND expiresAt > NOW() |
| 203 | ORDER BY createdAt DESC" |
| 204 | ); |
| 205 | $stmt->bindValue(':typeNum', $typeNum, PDO::PARAM_STR); |
| 206 | $stmt->execute(); |
| 207 | $rows = $stmt->fetchAll(PDO::FETCH_ASSOC); |
| 208 | |
| 209 | $invitations = []; |
| 210 | foreach ($rows as $row) { |
| 211 | $invitations[] = EmployeeInvitation::fromRow($row); |
| 212 | } |
| 213 | |
| 214 | return $invitations; |
| 215 | } |
| 216 | |
| 217 | /** |
| 218 | * Get pending invitations for a specific employee |
| 219 | * |
| 220 | * @param string $typeNum Store identifier |
| 221 | * @param int $employeeId Employee ID |
| 222 | * @return array Array of EmployeeInvitation objects |
| 223 | */ |
| 224 | public function getPendingInvitationsForEmployee(string $typeNum, int $employeeId): array |
| 225 | { |
| 226 | $stmt = $this->centralDb->prepare( |
| 227 | "SELECT * FROM employee_invitations |
| 228 | WHERE typeNum = :typeNum |
| 229 | AND employeeId = :employeeId |
| 230 | AND usedAt IS NULL |
| 231 | AND expiresAt > NOW() |
| 232 | ORDER BY createdAt DESC" |
| 233 | ); |
| 234 | $stmt->bindValue(':typeNum', $typeNum, PDO::PARAM_STR); |
| 235 | $stmt->bindValue(':employeeId', $employeeId, PDO::PARAM_INT); |
| 236 | $stmt->execute(); |
| 237 | $rows = $stmt->fetchAll(PDO::FETCH_ASSOC); |
| 238 | |
| 239 | $invitations = []; |
| 240 | foreach ($rows as $row) { |
| 241 | $invitations[] = EmployeeInvitation::fromRow($row); |
| 242 | } |
| 243 | |
| 244 | return $invitations; |
| 245 | } |
| 246 | |
| 247 | /** |
| 248 | * Revoke/cancel an invitation |
| 249 | * |
| 250 | * @param int $invitationId Invitation ID |
| 251 | * @return bool True if revoked successfully |
| 252 | */ |
| 253 | public function revokeInvitation(int $invitationId): bool |
| 254 | { |
| 255 | // Mark as expired by setting expiresAt to now |
| 256 | $stmt = $this->centralDb->prepare( |
| 257 | "UPDATE employee_invitations SET expiresAt = NOW() WHERE id = :id" |
| 258 | ); |
| 259 | $stmt->bindValue(':id', $invitationId, PDO::PARAM_INT); |
| 260 | return $stmt->execute(); |
| 261 | } |
| 262 | |
| 263 | /** |
| 264 | * Resend invitation email |
| 265 | * |
| 266 | * @param int $invitationId Invitation ID |
| 267 | * @return bool True if resent successfully |
| 268 | * @throws Exception If invitation not found or invalid |
| 269 | */ |
| 270 | public function resendInvitation(int $invitationId): bool |
| 271 | { |
| 272 | // Get invitation |
| 273 | $stmt = $this->centralDb->prepare( |
| 274 | "SELECT * FROM employee_invitations WHERE id = :id" |
| 275 | ); |
| 276 | $stmt->bindValue(':id', $invitationId, PDO::PARAM_INT); |
| 277 | $stmt->execute(); |
| 278 | $invitationData = $stmt->fetch(PDO::FETCH_ASSOC); |
| 279 | |
| 280 | if (!$invitationData) { |
| 281 | throw new Exception("Invitation not found"); |
| 282 | } |
| 283 | |
| 284 | $invitation = EmployeeInvitation::fromRow($invitationData); |
| 285 | |
| 286 | if (!$invitation->isValid()) { |
| 287 | throw new Exception("Invitation is no longer valid"); |
| 288 | } |
| 289 | |
| 290 | // Get employee data |
| 291 | $storeDb = dbConnectByName('kiosk_' . $invitation->getTypeNum()); |
| 292 | $empStmt = $storeDb->prepare( |
| 293 | "SELECT * FROM employees WHERE employeeID = :employeeId" |
| 294 | ); |
| 295 | $empStmt->bindValue(':employeeId', $invitation->getEmployeeId(), PDO::PARAM_INT); |
| 296 | $empStmt->execute(); |
| 297 | $employee = $empStmt->fetch(PDO::FETCH_ASSOC); |
| 298 | |
| 299 | if (!$employee) { |
| 300 | throw new Exception("Employee not found"); |
| 301 | } |
| 302 | |
| 303 | // Resend email |
| 304 | return $this->sendInvitationEmail($invitation, $employee, $invitation->getTypeNum()); |
| 305 | } |
| 306 | |
| 307 | /** |
| 308 | * Clean up expired invitations |
| 309 | * |
| 310 | * Deletes invitations that expired more than 30 days ago. |
| 311 | * |
| 312 | * @return int Number of invitations deleted |
| 313 | */ |
| 314 | public function cleanupExpired(): int |
| 315 | { |
| 316 | $stmt = $this->centralDb->prepare( |
| 317 | "DELETE FROM employee_invitations WHERE expiresAt < DATE_SUB(NOW(), INTERVAL 30 DAY)" |
| 318 | ); |
| 319 | $stmt->execute(); |
| 320 | return $stmt->rowCount(); |
| 321 | } |
| 322 | |
| 323 | /** |
| 324 | * Generate secure random token |
| 325 | * |
| 326 | * @return string 64-character hexadecimal token |
| 327 | */ |
| 328 | private function generateToken(): string |
| 329 | { |
| 330 | return bin2hex(random_bytes(32)); |
| 331 | } |
| 332 | |
| 333 | /** |
| 334 | * Send invitation email |
| 335 | * |
| 336 | * @param EmployeeInvitation $invitation Invitation object |
| 337 | * @param array $employee Employee data |
| 338 | * @param string $typeNum Store identifier |
| 339 | * @return bool True if email sent successfully |
| 340 | */ |
| 341 | private function sendInvitationEmail(EmployeeInvitation $invitation, array $employee, string $typeNum): bool |
| 342 | { |
| 343 | try { |
| 344 | // Get store info |
| 345 | $storeStmt = $this->centralDb->prepare( |
| 346 | "SELECT * FROM stores WHERE typeNum = :typeNum" |
| 347 | ); |
| 348 | $storeStmt->bindValue(':typeNum', $typeNum, PDO::PARAM_STR); |
| 349 | $storeStmt->execute(); |
| 350 | $store = $storeStmt->fetch(PDO::FETCH_ASSOC); |
| 351 | |
| 352 | // Get inviter info |
| 353 | $inviterStmt = $this->centralDb->prepare( |
| 354 | "SELECT display_name FROM uf_user WHERE id = :id" |
| 355 | ); |
| 356 | $inviterStmt->bindValue(':id', $invitation->getInvitedBy(), PDO::PARAM_INT); |
| 357 | $inviterStmt->execute(); |
| 358 | $inviter = $inviterStmt->fetch(PDO::FETCH_ASSOC); |
| 359 | |
| 360 | $storeName = $store ? $store['storeType'] . ' #' . $store['storeNum'] : $typeNum; |
| 361 | $inviterName = $inviter ? $inviter['display_name'] : 'Your manager'; |
| 362 | |
| 363 | // Generate invitation URL |
| 364 | $baseUrl = isset($_ENV['BASE_URL']) ? $_ENV['BASE_URL'] : 'https://buyerkiosk.com'; |
| 365 | $inviteUrl = $baseUrl . '/invite/' . $invitation->getToken(); |
| 366 | |
| 367 | // Load Twig template |
| 368 | $templatePath = __DIR__ . '/../../../templates/mail/employee-invitation.html'; |
| 369 | if (!file_exists($templatePath)) { |
| 370 | error_log("Invitation email template not found: $templatePath"); |
| 371 | return false; |
| 372 | } |
| 373 | |
| 374 | $loader = new \Twig_Loader_Filesystem(__DIR__ . '/../../../templates/mail'); |
| 375 | $twig = new \Twig_Environment($loader); |
| 376 | |
| 377 | $emailHtml = $twig->render('employee-invitation.html', [ |
| 378 | 'employee' => [ |
| 379 | 'firstName' => $employee['employeeFirstName'] ?? '', |
| 380 | 'lastName' => $employee['employeeLastName'] ?? '', |
| 381 | ], |
| 382 | 'storeName' => $storeName, |
| 383 | 'inviterName' => $inviterName, |
| 384 | 'inviteUrl' => $inviteUrl, |
| 385 | 'expiresAt' => date('F j, Y g:i A', strtotime($invitation->getExpiresAt())), |
| 386 | 'personalMessage' => null // Can be extended later |
| 387 | ]); |
| 388 | |
| 389 | // Send email using existing mail infrastructure |
| 390 | $mail = new \PHPMailer\PHPMailer\PHPMailer(true); |
| 391 | |
| 392 | // Configure SMTP if available |
| 393 | if (isset($_ENV['SMTP_HOST'])) { |
| 394 | $mail->isSMTP(); |
| 395 | $mail->Host = $_ENV['SMTP_HOST']; |
| 396 | $mail->SMTPAuth = true; |
| 397 | $mail->Username = $_ENV['SMTP_USER'] ?? ''; |
| 398 | $mail->Password = $_ENV['SMTP_PASS'] ?? ''; |
| 399 | $mail->SMTPSecure = $_ENV['SMTP_SECURE'] ?? 'tls'; |
| 400 | $mail->Port = $_ENV['SMTP_PORT'] ?? 587; |
| 401 | } |
| 402 | |
| 403 | $mail->setFrom($_ENV['MAIL_FROM'] ?? 'noreply@buyerkiosk.com', 'BuyerKiosk'); |
| 404 | $mail->addAddress($invitation->getEmail()); |
| 405 | $mail->Subject = "You're invited to BuyerKiosk - $storeName"; |
| 406 | $mail->isHTML(true); |
| 407 | $mail->Body = $emailHtml; |
| 408 | |
| 409 | // Plain text alternative |
| 410 | $mail->AltBody = "Hi {$employee['employeeFirstName']},\n\n" . |
| 411 | "You've been invited to create an account for $storeName on BuyerKiosk.\n\n" . |
| 412 | "Click the link below to set up your account:\n" . |
| 413 | "$inviteUrl\n\n" . |
| 414 | "This invitation expires on " . date('F j, Y g:i A', strtotime($invitation->getExpiresAt())) . ".\n\n" . |
| 415 | "BuyerKiosk - Employee Management System"; |
| 416 | |
| 417 | return $mail->send(); |
| 418 | |
| 419 | } catch (Exception $e) { |
| 420 | error_log("Failed to send invitation email: " . $e->getMessage()); |
| 421 | return false; |
| 422 | } |
| 423 | } |
| 424 | } |