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| 1 | <?php |
| 2 | |
| 3 | namespace BuyerKiosk\Chat\Services; |
| 4 | |
| 5 | use BuyerKiosk\Chat\Models\ChatThread; |
| 6 | use PDO; |
| 7 | |
| 8 | /** |
| 9 | * ChatEligibilityService - Customer Messaging Eligibility |
| 10 | * |
| 11 | * Determines whether staff can message customers based on business rules. |
| 12 | * |
| 13 | * Business Rules (from PRD lines 163-170): |
| 14 | * 1. Staff can only initiate messages to customers with same-day buys |
| 15 | * 2. Exception: Open threads from previous days remain accessible until closed |
| 16 | * 3. Customers on do-not-text list are NOT messageable |
| 17 | * 4. Eligible customer list updates in real-time as buys are entered |
| 18 | * |
| 19 | * Additional rules: |
| 20 | * - "Same-day" is based on store timezone (not UTC) |
| 21 | * - A "buy" is a record in buyQueue table with timeEntered today |
| 22 | * - Customer is eligible if they have ANY buy today (entered or completed) |
| 23 | * |
| 24 | * @package BuyerKiosk\Chat\Services |
| 25 | */ |
| 26 | class ChatEligibilityService |
| 27 | { |
| 28 | /** |
| 29 | * @var PDO Store database connection |
| 30 | */ |
| 31 | private PDO $storeDb; |
| 32 | |
| 33 | /** |
| 34 | * @var PDO Central database connection for opt-out checks |
| 35 | */ |
| 36 | private PDO $centralDb; |
| 37 | |
| 38 | /** |
| 39 | * @var ChatMatchingService Matching service for opt-out checks |
| 40 | */ |
| 41 | private ChatMatchingService $matchingService; |
| 42 | |
| 43 | /** |
| 44 | * Create a new ChatEligibilityService |
| 45 | * |
| 46 | * @param PDO $storeDb Store database connection |
| 47 | * @param PDO $centralDb Central database connection |
| 48 | * @param ChatMatchingService $matchingService Matching service for opt-out checks |
| 49 | */ |
| 50 | public function __construct( |
| 51 | PDO $storeDb, |
| 52 | PDO $centralDb, |
| 53 | ChatMatchingService $matchingService |
| 54 | ) { |
| 55 | $this->storeDb = $storeDb; |
| 56 | $this->centralDb = $centralDb; |
| 57 | $this->matchingService = $matchingService; |
| 58 | } |
| 59 | |
| 60 | /** |
| 61 | * Create service with default dependencies using global functions |
| 62 | * |
| 63 | * Factory method for production use where we use actual BaseModel functions. |
| 64 | * |
| 65 | * @param string $typeNum Store identifier to connect to |
| 66 | * @return self |
| 67 | */ |
| 68 | public static function createWithDefaults(string $typeNum): self |
| 69 | { |
| 70 | global $db_name; |
| 71 | |
| 72 | // Get store database connection |
| 73 | $storeController = new \BuyerKiosk\BuyerKiosk\Controllers\StoreController($typeNum); |
| 74 | $store = $storeController->getStore(); |
| 75 | $storeDb = dbConnectByName($store->getDbName()); |
| 76 | |
| 77 | // Get central database connection |
| 78 | $centralDb = dbConnectByName($db_name); |
| 79 | |
| 80 | // Create matching service |
| 81 | $matchingService = ChatMatchingService::createWithDefaults(); |
| 82 | |
| 83 | return new self($storeDb, $centralDb, $matchingService); |
| 84 | } |
| 85 | |
| 86 | /** |
| 87 | * Check if staff can initiate a new message to this customer |
| 88 | * |
| 89 | * Eligibility Rules: |
| 90 | * 1. Phone must be valid (non-empty) |
| 91 | * 2. Customer ID must be valid (> 0) |
| 92 | * 3. Customer must NOT be opted out of all messages |
| 93 | * 4. Customer must have either: |
| 94 | * a. A same-day buy (timeEntered is today), OR |
| 95 | * b. An open thread from a previous day |
| 96 | * |
| 97 | * @param string $typeNum Store identifier |
| 98 | * @param int $customerId Customer ID |
| 99 | * @param string $customerPhone Customer phone number |
| 100 | * @return array Returns ['eligible' => bool, 'reason' => string] |
| 101 | */ |
| 102 | public function canMessageCustomer( |
| 103 | string $typeNum, |
| 104 | int $customerId, |
| 105 | string $customerPhone |
| 106 | ): array { |
| 107 | // Validate phone number |
| 108 | if (empty($customerPhone)) { |
| 109 | return [ |
| 110 | 'eligible' => false, |
| 111 | 'reason' => 'Invalid phone number provided.', |
| 112 | ]; |
| 113 | } |
| 114 | |
| 115 | // Validate customer ID |
| 116 | if ($customerId <= 0) { |
| 117 | return [ |
| 118 | 'eligible' => false, |
| 119 | 'reason' => 'Invalid customer ID provided.', |
| 120 | ]; |
| 121 | } |
| 122 | |
| 123 | // Check opt-out status FIRST (use 'all' to check for complete opt-out) |
| 124 | if ($this->matchingService->isOptedOut($customerPhone, 'all')) { |
| 125 | return [ |
| 126 | 'eligible' => false, |
| 127 | 'reason' => 'Customer has opted out of all text messages.', |
| 128 | ]; |
| 129 | } |
| 130 | |
| 131 | // Check for same-day buy |
| 132 | $hasSameDayBuy = $this->hasSameDayBuy($customerId); |
| 133 | |
| 134 | if ($hasSameDayBuy) { |
| 135 | return [ |
| 136 | 'eligible' => true, |
| 137 | 'reason' => 'Customer is eligible - has same-day buy.', |
| 138 | ]; |
| 139 | } |
| 140 | |
| 141 | // Check for open thread (exception for old buys) |
| 142 | $openThread = $this->findOpenThread($customerId); |
| 143 | |
| 144 | if ($openThread !== null) { |
| 145 | return [ |
| 146 | 'eligible' => true, |
| 147 | 'reason' => 'Customer is eligible - has open thread from previous conversation.', |
| 148 | ]; |
| 149 | } |
| 150 | |
| 151 | // No same-day buy and no open thread |
| 152 | return [ |
| 153 | 'eligible' => false, |
| 154 | 'reason' => 'Customer is not eligible - no same-day buy. Staff can only message customers who visited today.', |
| 155 | ]; |
| 156 | } |
| 157 | |
| 158 | /** |
| 159 | * Check if staff can send freetext (not template) in this thread |
| 160 | * |
| 161 | * Freetext Rules: |
| 162 | * 1. Thread must be open (pending or active status) |
| 163 | * 2. Thread must have staffCanFreetext flag set to true |
| 164 | * |
| 165 | * The staffCanFreetext flag is set to true after the customer sends their |
| 166 | * first reply. Before that, staff can only send approved templates. |
| 167 | * |
| 168 | * @param ChatThread $thread The thread to check |
| 169 | * @return bool True if staff can send freetext messages |
| 170 | */ |
| 171 | public function canSendFreetext(ChatThread $thread): bool |
| 172 | { |
| 173 | // Thread must be open (pending or active) |
| 174 | if (!$thread->isOpen()) { |
| 175 | return false; |
| 176 | } |
| 177 | |
| 178 | // Thread must have freetext unlocked (customer has replied) |
| 179 | return $thread->canStaffSendFreetext(); |
| 180 | } |
| 181 | |
| 182 | /** |
| 183 | * Get list of customers eligible for messaging today |
| 184 | * |
| 185 | * Returns customers who: |
| 186 | * 1. Have a same-day buy (timeEntered is today) |
| 187 | * 2. OR have an open thread from a previous conversation |
| 188 | * 3. AND are not opted out of all messages |
| 189 | * |
| 190 | * @param string $typeNum Store identifier |
| 191 | * @return array List of eligible customers with their buy/thread info |
| 192 | */ |
| 193 | public function getEligibleCustomers(string $typeNum): array |
| 194 | { |
| 195 | $eligibleCustomers = []; |
| 196 | $seenCustomerIds = []; |
| 197 | |
| 198 | // 1. Get customers with today's buys |
| 199 | $todaysBuys = $this->getTodaysBuys(); |
| 200 | |
| 201 | foreach ($todaysBuys as $buy) { |
| 202 | $phone = $buy['phone'] ?? ''; |
| 203 | $customerId = (int) ($buy['customerID'] ?? 0); |
| 204 | |
| 205 | // Skip if already seen or opted out |
| 206 | if (in_array($customerId, $seenCustomerIds)) { |
| 207 | continue; |
| 208 | } |
| 209 | |
| 210 | if (!empty($phone) && $this->matchingService->isOptedOut($phone, 'all')) { |
| 211 | continue; |
| 212 | } |
| 213 | |
| 214 | $eligibleCustomers[] = $buy; |
| 215 | $seenCustomerIds[] = $customerId; |
| 216 | } |
| 217 | |
| 218 | // 2. Get customers with open threads (even if no buy today) |
| 219 | $openThreadCustomers = $this->getOpenThreadCustomers($typeNum); |
| 220 | |
| 221 | foreach ($openThreadCustomers as $customer) { |
| 222 | $phone = $customer['phone'] ?? ''; |
| 223 | $customerId = (int) ($customer['customerID'] ?? 0); |
| 224 | |
| 225 | // Skip if already seen (from today's buys) or opted out |
| 226 | if (in_array($customerId, $seenCustomerIds)) { |
| 227 | continue; |
| 228 | } |
| 229 | |
| 230 | if (!empty($phone) && $this->matchingService->isOptedOut($phone, 'all')) { |
| 231 | continue; |
| 232 | } |
| 233 | |
| 234 | $eligibleCustomers[] = $customer; |
| 235 | $seenCustomerIds[] = $customerId; |
| 236 | } |
| 237 | |
| 238 | return $eligibleCustomers; |
| 239 | } |
| 240 | |
| 241 | /** |
| 242 | * Check if customer has a buy entered today |
| 243 | * |
| 244 | * @param int $customerId Customer ID |
| 245 | * @return bool True if customer has at least one buy today |
| 246 | */ |
| 247 | private function hasSameDayBuy(int $customerId): bool |
| 248 | { |
| 249 | $stmt = $this->storeDb->prepare( |
| 250 | "SELECT COUNT(*) FROM buyQueue |
| 251 | WHERE customerID = :customerId |
| 252 | AND DATE(timeEntered) = CURDATE()" |
| 253 | ); |
| 254 | $stmt->execute([':customerId' => $customerId]); |
| 255 | |
| 256 | return (int) $stmt->fetchColumn() > 0; |
| 257 | } |
| 258 | |
| 259 | /** |
| 260 | * Find an open thread for the given customer |
| 261 | * |
| 262 | * @param int $customerId Customer ID |
| 263 | * @return array|null Thread data if found, null otherwise |
| 264 | */ |
| 265 | private function findOpenThread(int $customerId): ?array |
| 266 | { |
| 267 | $stmt = $this->storeDb->prepare( |
| 268 | "SELECT * FROM chat_threads |
| 269 | WHERE customer_id = :customerId |
| 270 | AND status IN ('pending', 'active') |
| 271 | LIMIT 1" |
| 272 | ); |
| 273 | $stmt->execute([':customerId' => $customerId]); |
| 274 | |
| 275 | $result = $stmt->fetch(PDO::FETCH_ASSOC); |
| 276 | |
| 277 | return $result !== false ? $result : null; |
| 278 | } |
| 279 | |
| 280 | /** |
| 281 | * Get all buys entered today |
| 282 | * |
| 283 | * @return array List of today's buys with customer info |
| 284 | */ |
| 285 | private function getTodaysBuys(): array |
| 286 | { |
| 287 | $stmt = $this->storeDb->prepare( |
| 288 | "SELECT DISTINCT c.customerID, c.firstName, c.lastName, c.phone, |
| 289 | b.buyID, b.dailyNum, b.timeEntered |
| 290 | FROM buyQueue b |
| 291 | JOIN customers c ON b.customerID = c.customerID |
| 292 | WHERE DATE(b.timeEntered) = CURDATE() |
| 293 | ORDER BY b.timeEntered DESC" |
| 294 | ); |
| 295 | $stmt->execute(); |
| 296 | |
| 297 | return $stmt->fetchAll(PDO::FETCH_ASSOC); |
| 298 | } |
| 299 | |
| 300 | /** |
| 301 | * Get customers with open threads, including their customer info |
| 302 | * |
| 303 | * @param string $typeNum Store identifier |
| 304 | * @return array List of customers with open threads |
| 305 | */ |
| 306 | private function getOpenThreadCustomers(string $typeNum): array |
| 307 | { |
| 308 | $stmt = $this->storeDb->prepare( |
| 309 | "SELECT t.id as thread_id, c.customerID, c.firstName, c.lastName, c.phone, |
| 310 | t.status, t.staff_can_freetext, |
| 311 | b.buyID, b.dailyNum, b.timeEntered |
| 312 | FROM chat_threads t |
| 313 | JOIN customers c ON t.customer_id = c.customerID |
| 314 | LEFT JOIN buyQueue b ON t.buy_id = b.buyID |
| 315 | WHERE t.typeNum = :typeNum |
| 316 | AND t.status IN ('pending', 'active') |
| 317 | ORDER BY t.last_message_at DESC" |
| 318 | ); |
| 319 | $stmt->execute([':typeNum' => $typeNum]); |
| 320 | |
| 321 | return $stmt->fetchAll(PDO::FETCH_ASSOC); |
| 322 | } |
| 323 | } |