with open('index.php', 'r') as f:
    lines = f.readlines()

# The corrupted block starts around line 50 (index 50 is line 51)
# And ends around line 65 where "// Timezone Setup" is.
# Let's find "require_once 'db/config.php';" which I added, and "// Timezone Setup"

start_idx = -1
end_idx = -1

for i, line in enumerate(lines):
    if "require_once 'db/config.php';" in line:
        start_idx = i
    if "// Timezone Setup" in line:
        end_idx = i
        break

if start_idx != -1 and end_idx != -1:
    print(f"Replacing lines {start_idx+1} to {end_idx}")
    
    new_block = """require_once 'db/config.php';
require_once 'includes/stock_helper.php';

// Helper for current outlet
if (!function_exists('current_outlet_id')) {
    function current_outlet_id() {
        if (session_status() === PHP_SESSION_NONE) session_start();
        return (int)($_SESSION['outlet_id'] ?? 1);
    }
}

// Handle Outlet Switch
if (isset($_GET['action']) && $_GET['action'] === 'switch_outlet' && isset($_GET['id'])) {
    $target_id = (int)$_GET['id'];
    $allowed_outlets = $_SESSION['user_outlets'] ?? [1];
    $is_admin = ($_SESSION['user_role_name'] ?? '') === 'Administrator';
    
    if ($is_admin || in_array($target_id, $allowed_outlets)) {
        $stmt = db()->prepare("SELECT id FROM outlets WHERE id = ? AND status = 'active'");
        $stmt->execute([$target_id]);
        if ($stmt->fetchColumn()) {
            $_SESSION['outlet_id'] = $target_id;
        }
    }
    header("Location: index.php");
    exit;
}

"""
    # Replace the slice
    lines[start_idx:end_idx] = [new_block]
    
    with open('index.php', 'w') as f:
        f.writelines(lines)
    print("Fixed index.php")
else:
    print("Could not find block boundaries.")