using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace HTOLHAST
{
    public class Keithley6485 : SCPIInstrument
    {
        public Keithley6485(string resourceString) : base(resourceString) { }
        public void PerformZeroCheck()
        {
            try
            {
                // Step 1. Reset
                // Step 2. Enable zero check
                // step 3. Perform zero correction
                // step 4. Select AUTO range

                // step 5. Connect current to be measured
                // step 6. Disable zero check

                WriteCommand("*RST"); // Reset Instrument
                WriteCommand("SYST:ZCH ON"); // Enable zero check
                WriteCommand("RANG 2E-9"); // Set lowest range 
                WriteCommand("INIT"); // Trigger reading to be used as zero correction

                WriteCommand("SYST:ZCOR:ACQ");  // Use last reading taken as zero correct value.
                WriteCommand("SYST:ZCOR ON"); // Perform zero correction       
                WriteCommand("RANG:AUTO ON"); // Enable AUTO range
                WriteCommand("SYST:ZCH OFF"); // Disable zero check

                Console.WriteLine("ZeroCheck Performed");
            }
            catch (Exception e)
            {
                throw new InvalidOperationException("ZeroCheck operation failed.", e);
            }
            
        }
        private void InitiateRead()
        {
            WriteCommand("SYST:ZCH OFF"); // Enable zero check
            WriteCommand("INIT"); // Trigger reading to be used as zero correction
            WriteCommand("RANG:AUTO ON"); // Enable AUTO range
            WriteCommand("READ?"); // trigger and return one reading
            Console.WriteLine("Read Command Initiated");
        }
        public string MeasureDCCurrent()
        {
            InitiateRead();
            string response = ReadResponse();
            CreateSample(response);
            return response;
        }
        public override Sample CreateSample(string response)
        {
            string Response = response;

            // Parse the Keithley output
            string[] parts = Response.Split(',');

            if (parts.Length >= 1 && double.TryParse(parts[0].Replace("A", ""), out double current))
            {
                Keithley6485Sample sample = new Keithley6485Sample(DateTime.Now, current, "A");

                // Optionally, store or process the sample here
                Console.WriteLine($"[Keithley] Sample Created, Value: {sample.Value} {sample.Unit}");
                return sample;
            }

            throw new InvalidOperationException("Unsupported instrument type.");
        }
        
        // Add more specific methods for Keithley 6485 as needed
    }
}