namespace AiQ_GUI
{
    internal class LED
    {
        // Checks the LED voltages and currents against expected values, displaying results in the provided label
        public static void CheckLEDs(List<double> VorI, Label lblVorI, string VormA, double ExpVorI)
        {
            try
            {
                VorI.Sort(); // Sort the list from lowest to highest to prepare for finding the median
                double medianVorI = (VorI[2] + VorI[3]) / 2.0; // Will always be even (6) number of channels therefore average the two middle elements
                string medianText = $"Median: {medianVorI}{VormA}";

                //Expected value of 0 means informational only (force green)
                if (ExpVorI == 0)
                {
                    if (lblVorI == null)
                    {
                        MainForm.Instance.AddLabelToPanel($"LED {VormA} = {medianText}", false);
                        return;
                    }

                    lblVorI.Invoke(() =>
                    {
                        lblVorI.Text = lblVorI.Text.TrimEnd('=', ' ') + " = " + medianText;
                        lblVorI.ForeColor = Color.LimeGreen;
                    });
                    return;
                }

                // Define the 20% threshold ranges
                double LowerThreshold = ExpVorI * 0.8;
                double UpperThreshold = ExpVorI * 1.2;

                // Check median is within 20% of the expected value
                if (medianVorI < LowerThreshold || medianVorI > UpperThreshold)
                {
                    medianText += $" (away from expected {ExpVorI}{VormA})";
                    if (lblVorI == null)
                    {
                        MainForm.Instance.AddLabelToPanel($"LED {VormA} = {medianText}", true);
                        return;
                    }
                    lblVorI.Invoke(() =>
                    {
                        lblVorI.Text = lblVorI.Text.TrimEnd('=', ' ') + " = " + medianText;
                        lblVorI.ForeColor = Color.Red;
                    });
                    return;
                }

                List<string> outOfRangeVoltageChannels = []; // List to store out-of-range channels

                // Check each voltage/current channel is within 20% of expected 
                for (int i = 0; i < 6; i++)
                {
                    if (VorI[i] < LowerThreshold || VorI[i] > UpperThreshold)
                        outOfRangeVoltageChannels.Add($"Ch{i + 1}");
                }

                // If there are no single channels outside the threshold then green, else red
                if (outOfRangeVoltageChannels.Count == 0)
                {
                    if (lblVorI == null)
                    {
                        MainForm.Instance.AddLabelToPanel($"LED {VormA} = {medianText}", false);
                        return;
                    }
                    lblVorI.Invoke(() =>
                    {
                        lblVorI.Text = lblVorI.Text.TrimEnd('=', ' ') + " = " + medianText;
                        lblVorI.ForeColor = Color.LimeGreen;
                    });
                }
                else if (outOfRangeVoltageChannels.Count != 0)
                {
                    string errorText = medianText + " (error on " + string.Join(", ", outOfRangeVoltageChannels) + ")";
                    if (lblVorI == null)
                    {
                        MainForm.Instance.AddLabelToPanel($"LED {VormA} = {errorText}", true);
                        return;
                    }
                    lblVorI.Invoke(() =>
                    {
                        lblVorI.Text = lblVorI.Text.TrimEnd('=', ' ') + " = " + errorText;
                        lblVorI.ForeColor = Color.Red;
                    });
                }
            }
            catch (Exception ex)
            {
                MainForm.Instance.AddToActionsList($"Error checking LEDs: {ex.Message}", Level.ERROR);
            }
        }
    }
}