Mini Shell

<?php

//$rootPath = realpath(dirname(__FILE__) . '/..');
require_once $rootPath . '/PortalMM/config/config.php'; // Use clean config file


// Create connection
function getDBConnection() {
    try {
        $conn = new mysqli(DB_HOST, DB_USER, DB_PASS, DB_NAME);
        
        if ($conn->connect_error) {
            throw new Exception("Connection failed: " . $conn->connect_error);
        }
        
        return $conn;
    } catch (Exception $e) {
        die("Database connection error: " . $e->getMessage());
    }
}

class ChartData {
    
    // Example 1: Get sales by month
    public static function getSalesByMonth($year = null) {
        $conn = getDBConnection();
        
        $year = $year ?: date('Y');
        $query = "
            SELECT 
                MONTH(order_date) as month,
                MONTHNAME(order_date) as month_name,
                SUM(total_amount) as total_sales
            FROM orders
            WHERE YEAR(order_date) = ?
            GROUP BY MONTH(order_date)
            ORDER BY MONTH(order_date)
        ";
        
        $stmt = $conn->prepare($query);
        $stmt->bind_param("i", $year);
        $stmt->execute();
        $result = $stmt->get_result();
        
        $data = [];
        while ($row = $result->fetch_assoc()) {
            $data[] = $row;
        }
        
        $stmt->close();
        $conn->close();
        
        return $data;
    }
    
    // Example 2: Get product categories count
    public static function getProductCategories() {
        $conn = getDBConnection();
        
        $query = "
            SELECT 
                c.category_name,
                COUNT(p.product_id) as product_count
            FROM categories c
            LEFT JOIN products p ON c.category_id = p.category_id
            GROUP BY c.category_id
            ORDER BY product_count DESC
            LIMIT 10
        ";
        
        $result = $conn->query($query);
        
        $data = [];
        while ($row = $result->fetch_assoc()) {
            $data[] = $row;
        }
        
        $conn->close();
        return $data;
    }
    
    // Example 3: Custom query - modify as needed
    public static function getCustomData($table, $categoryColumn, $valueColumn) {
        $conn = getDBConnection();
        
        $query = "
            SELECT 
                $categoryColumn as category,
                COUNT($valueColumn) as count_value
            FROM $table
            GROUP BY $categoryColumn
            ORDER BY count_value DESC
            LIMIT 15
        ";
        
        $result = $conn->query($query);
        
        $data = [];
        while ($row = $result->fetch_assoc()) {
            $data[] = $row;
        }
        
        $conn->close();
        return $data;
    }
}
?>