using System.Text.Json;

namespace S8n.Components.Basics;

public class Calculator
{
    public object Execute(string @operator, object[] args)
    {
        if (args == null || args.Length < 2)
        {
            throw new ArgumentException("At least two arguments are required");
        }

        // Convert arguments to decimal for precision, handling JsonElement
        var numbers = args.Select(a =>
        {
            if (a is JsonElement jsonElement)
            {
                return jsonElement.GetDecimal();
            }
            return Convert.ToDecimal(a);
        }).ToArray();
        decimal result = 0;

        switch (@operator?.ToLower())
        {
            case "add":
                result = numbers.Sum();
                break;
            case "subtract":
                result = numbers[0];
                for (int i = 1; i < numbers.Length; i++)
                {
                    result -= numbers[i];
                }
                break;
            case "multiply":
                result = numbers[0];
                for (int i = 1; i < numbers.Length; i++)
                {
                    result *= numbers[i];
                }
                break;
            case "divide":
                result = numbers[0];
                for (int i = 1; i < numbers.Length; i++)
                {
                    if (numbers[i] == 0)
                    {
                        throw new DivideByZeroException("Division by zero is not allowed");
                    }
                    result /= numbers[i];
                }
                break;
            default:
                throw new ArgumentException($"Unknown operator: {@operator}");
        }

        return new { Result = result };
    }

    public object Reset(string @operator, object[] args)
    {
        // Return default inputs (operator = "add", args = [0, 0])
        return new
        {
            @operator = "add",
            args = new decimal[] { 0, 0 }
        };
    }
}