WebView2Extensions.cs

using System;
using System.Threading.Tasks;
using Microsoft.Web.WebView2.Core;
using Newtonsoft.Json;

namespace WebToolsDataMonitor
{
    public static class WebView2Extensions
    {
        public static Task<string> ExecuteScriptWithArgsAsync(this CoreWebView2 coreWebView2, string script, object[] args)
        {
            // Cleanly serialize the arguments to a plain JSON array string
            string jsonArgs = JsonConvert.SerializeObject(args);

            // 🔥 FIXED: Swapped out 'async function' for a standard synchronous execution block.
            // This guarantees the return value is evaluated as a string instantly rather than a Promise object.
            string executionWrapper = $@"
                (function() {{
                    try {{
                        const args = {jsonArgs};
                        
                        // Execute the tracking script logic immediately
                        const result = (function() {{
                            {script.Trim()}
                        }})();
                        
                        return result !== undefined ? String(result) : 'EXECUTION_SUCCESS_VOID';
                    }} catch (err) {{
                        return 'JS_EXECUTION_ERROR: ' + err.message;
                    }}
                }})();";

            return coreWebView2.ExecuteScriptAsync(executionWrapper);
        }
    }
}