using System;
using System.Collections.Generic;

namespace GenesisCordonelInterface.API
{
    /// <summary>
    /// Outside-facing facade for Genesis Cordonel Interface.
    /// Exposes only selected operations intended for external callers.
    /// </summary>
    public class InterfaceOutsideToGCI
    {
        private readonly InterfaceGCIToLaatzen _innerMeterAPI;

        /// <summary>
        /// Initializes a new instance of the <see cref="InterfaceOutsideToGCI"/> class.
        /// </summary>
        public InterfaceOutsideToGCI()
        {
            _innerMeterAPI = new InterfaceGCIToLaatzen();
        }

        /// <summary>
        /// Gets a value indicating whether the meter is currently connected and logged on.
        /// </summary>
        public bool IsConnected
        {
            get
            {
                return _innerMeterAPI.IsConnected;
            }
        }

        /// <summary>
        /// Connects to the meter on the specified slot.
        /// </summary>
        /// <param name="slotNo">Slot number.</param>
        /// <param name="usePasswordsSource">Specifies whether offline passwords should be used.</param>
        /// <returns>Connect operation result.</returns>
        public InterfaceGCIToLaatzen.ConnectResult Connect(int slotNo, int usePasswordSource, List<string> externPasswords)
        {
            return _innerMeterAPI.Connect(slotNo, usePasswordSource, externPasswords);
        }

        /// <summary>
        /// Disconnects from the currently connected meter.
        /// </summary>
        public void Disconnect()
        {
            _innerMeterAPI.Disconnect();
        }

        /// <summary>
        /// Reads PCB ID from the specified slot.
        /// </summary>
        /// <param name="slot">Slot number.</param>
        /// <returns>PCB ID string.</returns>
        public string GetPcbId(int slot)
        {
            return _innerMeterAPI.GetPcbId(slot);
        }

        /// <summary>
        /// Reads a register by name.
        /// </summary>
        /// <param name="registerName">Register name.</param>
        /// <returns>Register read result.</returns>
        public InterfaceGCIToLaatzen.RegisterReadResult ReadRegister(string registerName)
        {
            return _innerMeterAPI.ReadRegister(registerName);
        }

        /// <summary>
        /// Writes a value to a register.
        /// </summary>
        /// <param name="registerName">Register name.</param>
        /// <param name="value">Value to write.</param>
        /// <param name="storeToDevice">Specifies whether configuration should be stored after write.</param>
        /// <param name="refreshSystemState">Specifies whether system state refresh should be triggered after write.</param>
        /// <returns>Register write result.</returns>
        public InterfaceGCIToLaatzen.RegisterWriteResult WriteRegister(
            string registerName,
            object value,
            bool storeToDevice = false,
            bool refreshSystemState = false)
        {
            return _innerMeterAPI.WriteRegister(registerName, value, storeToDevice, refreshSystemState);
        }

        /// <summary>
        /// Sets meter password.
        /// </summary>
        /// <param name="password">Password value.</param>
        /// <returns>True if operation succeeded; otherwise false.</returns>
        public bool SetMeterPassword(string password)
        {
            return _innerMeterAPI.SetMeterPassword(password);
        }
    }
}