<?php
// Background worker for optimized panel generation
define('CLI_MODE', true);

require_once __DIR__ . '/includes/config.php';
require_once __DIR__ . '/includes/db.php';
require_once __DIR__ . '/enhanced_panel_generation.php';

// Start session to access progress variables
session_start();

set_time_limit(0);
ini_set('memory_limit', '512M');

try {
    error_log("Starting optimized panel generation background worker...");
    
    // Initialize the enhanced handler
    $handler = new EnhancedPanelAlignmentHandler();
    
    // Clear existing panel data
    $db = Database::getInstance();
    $db->query("DELETE FROM panel_data");
    $db->query("DELETE FROM panel_processing_status");
    $db->query("UPDATE statistic_combinations SET actual_percentage = NULL");
    
    error_log("Cleared existing panel data");
    
    // Start optimized generation
    $result = $handler->generateOptimizedPanel(10000); // Generate 10,000 panelists
    
    if ($result['success']) {
        error_log("Optimized panel generation completed successfully");
        error_log("Generated: " . $result['generated_count'] . " panelists");
        error_log("Alignment score: " . ($result['alignment_score'] ?? 'N/A'));
        error_log("Impossible combinations avoided: " . ($result['impossible_combinations_avoided'] ?? 0));
    } else {
        error_log("Optimized panel generation failed: " . $result['message']);
    }
    
} catch (Exception $e) {
    error_log("Error in optimized panel generation worker: " . $e->getMessage());
    
    // Update session to indicate failure
    $_SESSION['panel_generation_progress'] = 0;
    $_SESSION['panel_generation_status'] = 'Error: ' . $e->getMessage();
}
?>