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| 1 | <?php |
| 2 | |
| 3 | namespace BuyerKiosk\Chat\Services; |
| 4 | |
| 5 | use BuyerKiosk\Core\Store; |
| 6 | use PDO; |
| 7 | |
| 8 | /** |
| 9 | * ChatMatchingService - Phone-to-Store Routing |
| 10 | * |
| 11 | * Routes incoming SMS messages to the appropriate store based on customer phone number. |
| 12 | * Uses the kiosk_buys.systemBuys table for efficient single-query lookup across all stores. |
| 13 | * |
| 14 | * Business Rules (from PRD lines 295-308): |
| 15 | * - Phone numbers must be normalized to 10-digit format before lookup |
| 16 | * - Route to store with most recent buy timestamp |
| 17 | * - If no buy found, return null (unroutable) |
| 18 | * - Check opt-out status BEFORE routing (opted-out phones return immediately) |
| 19 | * |
| 20 | * Performance: Uses indexed systemBuys.phoneNum for O(log n) lookup instead of |
| 21 | * iterating hundreds of store databases. |
| 22 | * |
| 23 | * @package BuyerKiosk\Chat\Services |
| 24 | */ |
| 25 | class ChatMatchingService |
| 26 | { |
| 27 | /** |
| 28 | * @var PDO Central database connection for opt-out checks |
| 29 | */ |
| 30 | private PDO $centralDb; |
| 31 | |
| 32 | /** |
| 33 | * @var PDO Buys database connection for systemBuys lookups |
| 34 | */ |
| 35 | private PDO $buysDb; |
| 36 | |
| 37 | /** |
| 38 | * @var callable Function to connect to a store database by name |
| 39 | */ |
| 40 | private $dbConnector; |
| 41 | |
| 42 | /** |
| 43 | * @var callable Function to get a Store object by typeNum |
| 44 | */ |
| 45 | private $storeLoader; |
| 46 | |
| 47 | /** |
| 48 | * Create a new ChatMatchingService |
| 49 | * |
| 50 | * @param PDO $centralDb Central database connection (kiosk_buykiosk) |
| 51 | * @param PDO $buysDb Buys database connection (kiosk_buys) |
| 52 | * @param callable $dbConnector Function that takes dbName and returns PDO connection |
| 53 | * @param callable $storeLoader Function that takes typeNum and returns Store object |
| 54 | */ |
| 55 | public function __construct( |
| 56 | PDO $centralDb, |
| 57 | PDO $buysDb, |
| 58 | callable $dbConnector, |
| 59 | callable $storeLoader |
| 60 | ) { |
| 61 | $this->centralDb = $centralDb; |
| 62 | $this->buysDb = $buysDb; |
| 63 | $this->dbConnector = $dbConnector; |
| 64 | $this->storeLoader = $storeLoader; |
| 65 | } |
| 66 | |
| 67 | /** |
| 68 | * Create service with default dependencies using global functions |
| 69 | * |
| 70 | * Factory method for production use where we use the actual BaseModel functions. |
| 71 | * |
| 72 | * @return self |
| 73 | */ |
| 74 | public static function createWithDefaults(): self |
| 75 | { |
| 76 | $centralDb = dbConnectByName('kiosk_buykiosk'); |
| 77 | $buysDb = dbConnectByName('kiosk_buys'); |
| 78 | |
| 79 | $dbConnector = function (string $dbName) { |
| 80 | return dbConnectByName($dbName); |
| 81 | }; |
| 82 | |
| 83 | $storeLoader = function (string $typeNum) { |
| 84 | $storeController = new \BuyerKiosk\BuyerKiosk\Controllers\StoreController($typeNum); |
| 85 | return $storeController->getStore(); |
| 86 | }; |
| 87 | |
| 88 | return new self($centralDb, $buysDb, $dbConnector, $storeLoader); |
| 89 | } |
| 90 | |
| 91 | /** |
| 92 | * Normalize a phone number to 10-digit format |
| 93 | * |
| 94 | * Strips all non-digit characters and removes country code if present. |
| 95 | * |
| 96 | * @param string $phone Raw phone number input |
| 97 | * @return string|null Normalized 10-digit phone, or null if invalid |
| 98 | */ |
| 99 | public function normalizePhone(string $phone): ?string |
| 100 | { |
| 101 | // Strip all non-digit characters |
| 102 | $normalized = preg_replace('/\D/', '', $phone); |
| 103 | |
| 104 | // Handle empty string |
| 105 | if (empty($normalized)) { |
| 106 | return null; |
| 107 | } |
| 108 | |
| 109 | // Remove leading 1 from 11-digit number (US country code) |
| 110 | if (strlen($normalized) === 11 && $normalized[0] === '1') { |
| 111 | $normalized = substr($normalized, 1); |
| 112 | } |
| 113 | |
| 114 | // Validate exactly 10 digits |
| 115 | if (strlen($normalized) !== 10) { |
| 116 | return null; |
| 117 | } |
| 118 | |
| 119 | return $normalized; |
| 120 | } |
| 121 | |
| 122 | /** |
| 123 | * Check if a phone number is opted out |
| 124 | * |
| 125 | * Checks the loyaltyDoNotTextList table in the central database. |
| 126 | * |
| 127 | * @param string $phone Phone number to check (will be normalized) |
| 128 | * @param string $type Opt-out type to check: 'all' or 'marketing' |
| 129 | * @return bool True if opted out for the specified type |
| 130 | */ |
| 131 | public function isOptedOut(string $phone, string $type = 'all'): bool |
| 132 | { |
| 133 | $normalizedPhone = $this->normalizePhone($phone); |
| 134 | |
| 135 | if ($normalizedPhone === null) { |
| 136 | return false; // Invalid phone can't be in opt-out list |
| 137 | } |
| 138 | |
| 139 | $stmt = $this->centralDb->prepare( |
| 140 | "SELECT phone, optout_type |
| 141 | FROM loyaltyDoNotTextList |
| 142 | WHERE phone = :phone |
| 143 | LIMIT 1" |
| 144 | ); |
| 145 | $stmt->execute([':phone' => $normalizedPhone]); |
| 146 | $result = $stmt->fetch(PDO::FETCH_ASSOC); |
| 147 | |
| 148 | if (!$result) { |
| 149 | return false; // Not in opt-out list |
| 150 | } |
| 151 | |
| 152 | $optoutType = $result['optout_type'] ?? 'all'; |
| 153 | |
| 154 | // 'all' opt-out blocks everything |
| 155 | if ($optoutType === 'all') { |
| 156 | return true; |
| 157 | } |
| 158 | |
| 159 | // 'marketing' opt-out only blocks marketing messages |
| 160 | // It does NOT block interactive chat (type='all' check) |
| 161 | if ($type === 'marketing' && $optoutType === 'marketing') { |
| 162 | return true; |
| 163 | } |
| 164 | |
| 165 | // Marketing-only opt-out does not block interactive chat |
| 166 | return false; |
| 167 | } |
| 168 | |
| 169 | /** |
| 170 | * Find the store associated with a phone number |
| 171 | * |
| 172 | * Routes to the store with the most recent buy transaction for this customer. |
| 173 | * Uses the systemBuys table for efficient single-query lookup across all stores. |
| 174 | * |
| 175 | * @param string $phone Phone number to look up |
| 176 | * @return array|null Match result with keys: |
| 177 | * - 'store' => Store object |
| 178 | * - 'customer' => array of customer/buy data |
| 179 | * - 'buyId' => int buy transaction ID |
| 180 | * - 'typeNum' => string store identifier |
| 181 | * OR for opted-out phones: |
| 182 | * - 'optedOut' => true |
| 183 | * - 'optoutType' => string 'all' or 'marketing' |
| 184 | * OR null if no match found |
| 185 | */ |
| 186 | public function findStoreByPhone(string $phone): ?array |
| 187 | { |
| 188 | // Normalize phone to 10 digits |
| 189 | $normalizedPhone = $this->normalizePhone($phone); |
| 190 | |
| 191 | if ($normalizedPhone === null) { |
| 192 | return null; // Invalid phone format |
| 193 | } |
| 194 | |
| 195 | // Check opt-out status FIRST (before any store queries) |
| 196 | if ($this->isOptedOut($normalizedPhone, 'all')) { |
| 197 | // Get the opt-out type for the response |
| 198 | $stmt = $this->centralDb->prepare( |
| 199 | "SELECT optout_type |
| 200 | FROM loyaltyDoNotTextList |
| 201 | WHERE phone = :phone |
| 202 | LIMIT 1" |
| 203 | ); |
| 204 | $stmt->execute([':phone' => $normalizedPhone]); |
| 205 | $optoutResult = $stmt->fetch(PDO::FETCH_ASSOC); |
| 206 | |
| 207 | return [ |
| 208 | 'optedOut' => true, |
| 209 | 'optoutType' => $optoutResult['optout_type'] ?? 'all', |
| 210 | ]; |
| 211 | } |
| 212 | |
| 213 | // Single query to systemBuys - uses idx_phone_timestamp index for efficient lookup |
| 214 | // Returns the most recent buy for this phone number across ALL stores |
| 215 | $stmt = $this->buysDb->prepare( |
| 216 | "SELECT origin, customerID, buyID, timeStamp |
| 217 | FROM systemBuys |
| 218 | WHERE phoneNum = :phone |
| 219 | ORDER BY timeStamp DESC |
| 220 | LIMIT 1" |
| 221 | ); |
| 222 | $stmt->execute([':phone' => $normalizedPhone]); |
| 223 | $systemBuy = $stmt->fetch(PDO::FETCH_ASSOC); |
| 224 | |
| 225 | if (!$systemBuy) { |
| 226 | return null; // No buy found for this phone |
| 227 | } |
| 228 | |
| 229 | $typeNum = $systemBuy['origin']; |
| 230 | $customerId = (int) $systemBuy['customerID']; |
| 231 | $buyId = (int) $systemBuy['buyID']; |
| 232 | |
| 233 | // Load the Store object |
| 234 | $store = ($this->storeLoader)($typeNum); |
| 235 | |
| 236 | if (!$store) { |
| 237 | return null; // Store not found |
| 238 | } |
| 239 | |
| 240 | // Get full customer details from the store database |
| 241 | $storeDb = ($this->dbConnector)('kiosk_' . $typeNum); |
| 242 | |
| 243 | if (!$storeDb) { |
| 244 | return null; // Can't connect to store DB |
| 245 | } |
| 246 | |
| 247 | $stmt = $storeDb->prepare( |
| 248 | "SELECT c.customerID, c.firstName, c.lastName, c.phone, |
| 249 | b.buyID, b.dailyNum, b.timeEntered, b.timeCompleted |
| 250 | FROM customers c |
| 251 | LEFT JOIN buyQueue b ON b.buyID = :buyId |
| 252 | WHERE c.customerID = :customerId |
| 253 | LIMIT 1" |
| 254 | ); |
| 255 | $stmt->execute([ |
| 256 | ':customerId' => $customerId, |
| 257 | ':buyId' => $buyId, |
| 258 | ]); |
| 259 | $customer = $stmt->fetch(PDO::FETCH_ASSOC); |
| 260 | |
| 261 | if (!$customer) { |
| 262 | // Fallback: Customer exists in systemBuys but not in store DB (rare edge case) |
| 263 | $customer = [ |
| 264 | 'customerID' => $customerId, |
| 265 | 'firstName' => '', |
| 266 | 'lastName' => '', |
| 267 | 'phone' => $normalizedPhone, |
| 268 | 'buyID' => $buyId, |
| 269 | 'dailyNum' => null, |
| 270 | 'timeEntered' => $systemBuy['timeStamp'], |
| 271 | 'timeCompleted' => null, |
| 272 | ]; |
| 273 | } |
| 274 | |
| 275 | return [ |
| 276 | 'store' => $store, |
| 277 | 'customer' => $customer, |
| 278 | 'buyId' => $buyId, |
| 279 | 'typeNum' => $typeNum, |
| 280 | ]; |
| 281 | } |
| 282 | } |