Fix missing enqueued_at column in twp_queued_calls table

Database Schema Fixes:
- Added enqueued_at column migration to twp_queued_calls table
- Updated personal queue query to use COALESCE for column compatibility
- Enhanced requeue function to handle both enqueued_at and joined_at columns
- Added dynamic column detection for backwards compatibility

SQL Error Resolution:
- Fixes "Unknown column 'qc.enqueued_at' in 'ORDER BY'" errors
- Maintains compatibility with existing installations
- Ensures proper queue ordering functionality

The code now gracefully handles both old (joined_at) and new (enqueued_at)
column structures, with automatic migration adding the missing column.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

admin/class-twp-admin.php

@@ -7347,13 +7347,26 @@ class TWP_Admin {
             
             // Add call to our database queue tracking
             $calls_table = $wpdb->prefix . 'twp_queued_calls';
-            $wpdb->insert($calls_table, [
+            
+            // Use enqueued_at if available, fallback to joined_at for compatibility
+            $insert_data = [
                 'queue_id' => $queue_id,
                 'call_sid' => $call_sid,
                 'from_number' => $call->from,
-                'enqueued_at' => current_time('mysql'),
+                'to_number' => $call->to ?: '',
+                'position' => 1, // Will be updated by queue manager
                 'status' => 'waiting'
-            ]);
+            ];
+            
+            // Check if enqueued_at column exists
+            $columns = $wpdb->get_col("DESCRIBE $calls_table");
+            if (in_array('enqueued_at', $columns)) {
+                $insert_data['enqueued_at'] = current_time('mysql');
+            } else {
+                $insert_data['joined_at'] = current_time('mysql');
+            }
+            
+            $wpdb->insert($calls_table, $insert_data);
             
             wp_send_json_success(['message' => 'Call requeued successfully']);
         } catch (Exception $e) {
@@ -7893,7 +7906,7 @@ class TWP_Admin {
             JOIN $queues_table q ON qc.queue_id = q.id
             WHERE q.queue_name = %s 
             AND qc.status = 'waiting'
-            ORDER BY qc.enqueued_at ASC
+            ORDER BY COALESCE(qc.enqueued_at, qc.joined_at) ASC
             LIMIT 1
         ", $queue_name));
         

includes/class-twp-activator.php

@@ -402,6 +402,13 @@ class TWP_Activator {
             $wpdb->query("ALTER TABLE $table_queued_calls ADD COLUMN notified_timeout datetime AFTER agent_call_sid");
         }
         
+        // Add enqueued_at column (some code uses this instead of joined_at)
+        $enqueued_at_exists = $wpdb->get_results("SHOW COLUMNS FROM $table_queued_calls LIKE 'enqueued_at'");
+        if (empty($enqueued_at_exists)) {
+            $wpdb->query("ALTER TABLE $table_queued_calls ADD COLUMN enqueued_at datetime DEFAULT CURRENT_TIMESTAMP AFTER notified_timeout");
+            error_log('TWP: Added enqueued_at column to twp_queued_calls table');
+        }
+        
         // Fix phone number field lengths in call recordings table for outbound calls
         $table_recordings = $wpdb->prefix . 'twp_call_recordings';