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| 1 | <?php |
| 2 | |
| 3 | namespace BuyerKiosk\Chat\Events; |
| 4 | |
| 5 | /** |
| 6 | * ChatAblyPublisher - Real-time event publishing for Two-Way SMS Chat |
| 7 | * |
| 8 | * Publishes events to Ably for real-time synchronization across clients |
| 9 | * viewing the Chat interface in the Workbook dashboard. |
| 10 | * |
| 11 | * Events published: |
| 12 | * - workbook:chat:message - New message received/sent |
| 13 | * - workbook:chat:thread:new - New conversation thread created |
| 14 | * - workbook:chat:thread:closed - Thread was closed |
| 15 | * - workbook:chat:delivered - Message delivery status update |
| 16 | * - workbook:chat:freetext:unlocked - Freetext messaging unlocked by customer reply |
| 17 | * |
| 18 | * @package BuyerKiosk\Chat\Events |
| 19 | */ |
| 20 | class ChatAblyPublisher |
| 21 | { |
| 22 | /** |
| 23 | * @var \Ably\AblyRest|null Ably REST client instance |
| 24 | */ |
| 25 | private $ably; |
| 26 | |
| 27 | /** |
| 28 | * @var string Store identifier (used as channel name) |
| 29 | */ |
| 30 | private string $typeNum; |
| 31 | |
| 32 | /** |
| 33 | * @var bool Whether Ably is enabled and available |
| 34 | */ |
| 35 | private bool $enabled; |
| 36 | |
| 37 | /** |
| 38 | * Constructor |
| 39 | * |
| 40 | * @param string $typeNum Store identifier (e.g., 'ou00', 'pa00') |
| 41 | */ |
| 42 | public function __construct(string $typeNum) |
| 43 | { |
| 44 | $this->typeNum = $typeNum; |
| 45 | $this->enabled = false; |
| 46 | $this->ably = null; |
| 47 | |
| 48 | // Check if Ably key is configured |
| 49 | if (!isset($_ENV['ABLY_KEY']) || empty($_ENV['ABLY_KEY'])) { |
| 50 | error_log("ChatAblyPublisher: ABLY_KEY not configured, real-time events disabled"); |
| 51 | return; |
| 52 | } |
| 53 | |
| 54 | try { |
| 55 | $this->ably = new \Ably\AblyRest($_ENV['ABLY_KEY']); |
| 56 | $this->enabled = true; |
| 57 | } catch (\Exception $e) { |
| 58 | error_log("ChatAblyPublisher: Failed to initialize Ably - " . $e->getMessage()); |
| 59 | $this->enabled = false; |
| 60 | } |
| 61 | } |
| 62 | |
| 63 | /** |
| 64 | * Publish an event to the Ably channel |
| 65 | * |
| 66 | * @param string $action Event action name |
| 67 | * @param array $data Event data payload |
| 68 | * @return void |
| 69 | */ |
| 70 | public function publish(string $action, array $data): void |
| 71 | { |
| 72 | if (!$this->enabled) { |
| 73 | return; |
| 74 | } |
| 75 | |
| 76 | try { |
| 77 | $payload = array_merge($data, [ |
| 78 | 'action' => $action, |
| 79 | 'category' => $this->typeNum, |
| 80 | 'timestamp' => date('c'), // ISO 8601 format |
| 81 | 'source' => 'chat' |
| 82 | ]); |
| 83 | |
| 84 | $channel = $this->ably->channel($this->typeNum); |
| 85 | $channel->publish($action, $payload); |
| 86 | } catch (\Exception $e) { |
| 87 | error_log("ChatAblyPublisher: Failed to publish event '{$action}' - " . $e->getMessage()); |
| 88 | } |
| 89 | } |
| 90 | |
| 91 | /** |
| 92 | * Check if Ably publishing is enabled |
| 93 | * |
| 94 | * @return bool |
| 95 | */ |
| 96 | public function isEnabled(): bool |
| 97 | { |
| 98 | return $this->enabled; |
| 99 | } |
| 100 | |
| 101 | // ========================================================================= |
| 102 | // Chat Message Events |
| 103 | // ========================================================================= |
| 104 | |
| 105 | /** |
| 106 | * Publish new message event |
| 107 | * |
| 108 | * Called when staff sends message OR customer replies. |
| 109 | * |
| 110 | * @param int $threadId Thread ID |
| 111 | * @param array $messageData Message data containing: |
| 112 | * - messageId: int - Message ID |
| 113 | * - direction: string - 'inbound' or 'outbound' |
| 114 | * - body: string - Message content |
| 115 | * - timestamp: string - ISO 8601 timestamp |
| 116 | * - customerId: int - Customer ID |
| 117 | * - customerName: string - Customer name |
| 118 | * - employeeId: int|null - Employee ID (null for inbound) |
| 119 | * @return void |
| 120 | */ |
| 121 | public function publishNewMessage(int $threadId, array $messageData): void |
| 122 | { |
| 123 | $this->publish('workbook:chat:message', array_merge( |
| 124 | ['threadId' => $threadId], |
| 125 | $messageData |
| 126 | )); |
| 127 | } |
| 128 | |
| 129 | /** |
| 130 | * Publish new thread event |
| 131 | * |
| 132 | * Called when a new conversation thread is created. |
| 133 | * |
| 134 | * @param int $threadId Thread ID |
| 135 | * @param array $threadData Thread data containing: |
| 136 | * - customerId: int - Customer ID |
| 137 | * - customerName: string - Customer name |
| 138 | * - customerPhone: string - Customer phone number |
| 139 | * - buyId: int|null - Associated buy ID (if any) |
| 140 | * - status: string - Thread status |
| 141 | * @return void |
| 142 | */ |
| 143 | public function publishNewThread(int $threadId, array $threadData): void |
| 144 | { |
| 145 | $this->publish('workbook:chat:thread:new', array_merge( |
| 146 | ['threadId' => $threadId], |
| 147 | $threadData |
| 148 | )); |
| 149 | } |
| 150 | |
| 151 | /** |
| 152 | * Publish delivery status update |
| 153 | * |
| 154 | * Called when SMS delivery status is confirmed by the provider. |
| 155 | * |
| 156 | * @param int $threadId Thread ID |
| 157 | * @param int $messageId Message ID |
| 158 | * @param string $status Delivery status: 'delivered', 'failed', 'pending' |
| 159 | * @return void |
| 160 | */ |
| 161 | public function publishDeliveryUpdate(int $threadId, int $messageId, string $status): void |
| 162 | { |
| 163 | $this->publish('workbook:chat:delivered', [ |
| 164 | 'threadId' => $threadId, |
| 165 | 'messageId' => $messageId, |
| 166 | 'status' => $status, |
| 167 | ]); |
| 168 | } |
| 169 | |
| 170 | /** |
| 171 | * Publish thread closed event |
| 172 | * |
| 173 | * Called when a staff member closes a conversation thread. |
| 174 | * |
| 175 | * @param int $threadId Thread ID |
| 176 | * @param int $employeeId Employee ID who closed the thread |
| 177 | * @return void |
| 178 | */ |
| 179 | public function publishThreadClosed(int $threadId, int $employeeId): void |
| 180 | { |
| 181 | $this->publish('workbook:chat:thread:closed', [ |
| 182 | 'threadId' => $threadId, |
| 183 | 'employeeId' => $employeeId, |
| 184 | ]); |
| 185 | } |
| 186 | |
| 187 | /** |
| 188 | * Publish freetext unlocked event |
| 189 | * |
| 190 | * Called when a customer replies to a thread, unlocking freetext messaging |
| 191 | * for staff members. This enables the compose input for arbitrary messages. |
| 192 | * |
| 193 | * @param int $threadId Thread ID |
| 194 | * @return void |
| 195 | */ |
| 196 | public function publishFreetextUnlocked(int $threadId): void |
| 197 | { |
| 198 | $this->publish('workbook:chat:freetext:unlocked', [ |
| 199 | 'threadId' => $threadId, |
| 200 | ]); |
| 201 | } |
| 202 | } |