<?php
require 'db/config.php';
try {
    $pdo = db();
    
    // Create outlets table
    $pdo->exec("CREATE TABLE IF NOT EXISTS `outlets` (
        `id` int(11) NOT NULL AUTO_INCREMENT,
        `name` varchar(255) NOT NULL,
        `address` text,
        `phone` varchar(50),
        `status` enum('active','inactive') DEFAULT 'active',
        `created_at` timestamp DEFAULT CURRENT_TIMESTAMP,
        PRIMARY KEY (`id`)
    ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;");
    
    // Insert a default Main Branch if table is empty
    $stmt = $pdo->query("SELECT COUNT(*) FROM outlets");
    if ($stmt->fetchColumn() == 0) {
        $pdo->exec("INSERT INTO outlets (name, address, status) VALUES ('Main Branch', 'Headquarters', 'active')");
    }

    // Add outlet_id to tables
    $tablesToUpdate = [
        'users',
        'invoices',
        'purchases',
        'lpos',
        'quotations',
        'expenses',
        'payments'
    ];

    foreach ($tablesToUpdate as $table) {
        $stmt = $pdo->query("SHOW COLUMNS FROM `$table` LIKE 'outlet_id'");
        if ($stmt->rowCount() == 0) {
            $pdo->exec("ALTER TABLE `$table` ADD COLUMN `outlet_id` int(11) NULL DEFAULT 1 AFTER `id`");
            echo "Added outlet_id to $table\n";
        } else {
            echo "outlet_id already exists in $table\n";
        }
    }
    
    echo "Migration completed successfully.";
} catch (Exception $e) {
    echo "Error: " . $e->getMessage();
}