using System;
using System.IO;

public static class MinWallThicknessAutoCalcTests
{
    public static int Main()
    {
        try
        {
            AutoCalculationUsesToleranceWorstCase();
            Console.WriteLine("Min wall thickness auto calculation tests passed.");
            return 0;
        }
        catch (Exception ex)
        {
            Console.Error.WriteLine(ex.Message);
            return 1;
        }
    }

    private static void AutoCalculationUsesToleranceWorstCase()
    {
        var sourcePath = Path.Combine("UI", "DrawingParamsForm.cs");
        var source = File.ReadAllText(sourcePath);

        if (!source.Contains("private const string KeyOuterDiameter1TolMinus = \"OuterDiameter1TolMinus\";") ||
            !source.Contains("private const string KeyInnerDiameter2TolPlus = \"InnerDiameter2TolPlus\";"))
        {
            throw new InvalidOperationException(sourcePath + ": min wall thickness auto calculation must know outer lower tolerance and inner upper tolerance keys.");
        }

        if (!source.Contains("string.Equals(key, KeyOuterDiameter1TolMinus, StringComparison.OrdinalIgnoreCase)") ||
            !source.Contains("string.Equals(key, KeyInnerDiameter2TolPlus, StringComparison.OrdinalIgnoreCase)"))
        {
            throw new InvalidOperationException(sourcePath + ": tolerance input changes must update min wall thickness.");
        }

        if (!source.Contains("var outerLower = GetNumericValue(KeyOuterDiameter1TolMinus);") ||
            !source.Contains("var innerUpper = GetNumericValue(KeyInnerDiameter2TolPlus);") ||
            !source.Contains("var t = ((phi1 + outerLower) - (phi2 + innerUpper)) / 2.0;"))
        {
            throw new InvalidOperationException(sourcePath + ": min wall thickness must be calculated as ((outer diameter + lower tolerance) - (inner diameter + upper tolerance)) / 2.");
        }

        if (source.Contains("var t = (phi1 - phi2) / 2.0;"))
        {
            throw new InvalidOperationException(sourcePath + ": nominal-only min wall thickness formula must not remain.");
        }
    }
}