using System;
using System.Windows.Forms;
using GenesisCordonelInterface.API;
using Xylem.Common.Hardware.Interfaces.Ports.PortCore;
using static Xylem.Common.Hardware.WaterMeter.Genesis.GenesisCore.GenesisMeter;

namespace GenesisCordonelInterface.UI.StaraTuraAPI_GenesisCordonelInterface
{
    public partial class FrmGCIAPI : Form
    {
        private readonly InterfaceOutsideToGCI _api = new InterfaceOutsideToGCI();

        public FrmGCIAPI()
        {
            InitializeComponent();
            InitializeDefaults();
        }

        private void InitializeDefaults()
        {
            cmbConfigSource.DataSource = Enum.GetValues(typeof(ConfigSource));
            cmbPasswordSource.DataSource = Enum.GetValues(typeof(PasswordSource));

            cmbConfigSource.SelectedItem = ConfigSource.ExternStorage;
            cmbPasswordSource.SelectedItem = PasswordSource.OfflineFile;
        }

        private void ExecuteApiAction(Action action)
        {
            try
            {
                action();
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message, "API call failed", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }

        private int GetSlot()
        {
            if (!int.TryParse(txtSlot.Text, out int slot))
                throw new Exception("Invalid slot number.");

            return slot;
        }

        private object ParseValue(string input)
        {
            if (int.TryParse(input, out int intValue))
                return intValue;

            if (uint.TryParse(input, out uint uintValue))
                return uintValue;

            if (bool.TryParse(input, out bool boolValue))
                return boolValue;

            return input;
        }

        private PortConfig? CreatePortConfig(string portName, string baudRateText)
        {
            if (string.IsNullOrWhiteSpace(portName))
                return null;

            if (!int.TryParse(baudRateText, out int baudRate))
                throw new Exception($"Invalid baud rate for port {portName}.");

            var cfg = new PortConfig
            {
                PortName = portName,
                Type = "Serial"
            };

            var sp = cfg.GetSerialPort();
            if (sp == null)
                throw new Exception($"Serial port object was not created for {portName}.");

            sp.BaudRate = baudRate;

            return cfg;
        }

        private ConfigSource GetConfigSource()
        {
            if (cmbConfigSource.SelectedItem == null)
                throw new Exception("ConfigSource is not selected.");

            return (ConfigSource)cmbConfigSource.SelectedItem;
        }

        private PasswordSource GetPasswordSource()
        {
            if (cmbPasswordSource.SelectedItem == null)
                throw new Exception("PasswordSource is not selected.");

            return (PasswordSource)cmbPasswordSource.SelectedItem;
        }

        private void btnInit_Click(object sender, EventArgs e)
        {
            ExecuteApiAction(() =>
            {
                int slot = GetSlot();

                var requestPort = CreatePortConfig(txtRequestPort.Text, txtRequestBaudRate.Text);
                var streamingPort = CreatePortConfig(txtStreamingPort.Text, txtStreamingBaudRate.Text);

                _api.InitOneMeterFromExtern(
                    slot,
                    GetConfigSource(),
                    GetPasswordSource(),
                    requestPort,
                    streamingPort);
            });
        }

        private void btnConnectOne_Click(object sender, EventArgs e)
        {
            ExecuteApiAction(() =>
            {
                _api.ConnectOneMeter(GetSlot());
            });
        }

        private void btnConnectAll_Click(object sender, EventArgs e)
        {
            ExecuteApiAction(() =>
            {
                _api.ConnectAllMeters(GetSlot());
            });
        }

        private void btnDisconnect_Click(object sender, EventArgs e)
        {
            ExecuteApiAction(() =>
            {
                _api.Disconnect();
            });
        }

        private void btnGetPcbId_Click(object sender, EventArgs e)
        {
            ExecuteApiAction(() =>
            {
                _api.GetPcbId(GetSlot());
            });
        }

        private void btnReadRegister_Click(object sender, EventArgs e)
        {
            ExecuteApiAction(() =>
            {
                string registerName = txtRegister.Text;

                if (string.IsNullOrWhiteSpace(registerName))
                    throw new Exception("Register name is empty.");

                _api.ReadRegister(registerName);
            });
        }

        private void btnWriteRegister_Click(object sender, EventArgs e)
        {
            ExecuteApiAction(() =>
            {
                string registerName = txtRegister.Text;
                string valueText = txtValue.Text;

                if (string.IsNullOrWhiteSpace(registerName))
                    throw new Exception("Register name is empty.");

                object value = ParseValue(valueText);

                _api.WriteRegister(registerName, value, false, false);
            });
        }

        private void btnSetPassword_Click(object sender, EventArgs e)
        {
            ExecuteApiAction(() =>
            {
                string password = txtPassword.Text;

                if (string.IsNullOrWhiteSpace(password))
                    throw new Exception("Password is empty.");

                _api.SetMeterPassword(password);
            });
        }
    }
}