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using System;
using System.Collections.Generic;
using System.Linq;
using FwUpdateApiSample;

namespace FwUpdateCmd
{
    /// <summary>
    /// Class for handling host controller specific commands
    /// </summary>
    internal class ControllerCommandRunner : CommandRunner
    {
        private readonly Dictionary<string, SdkTbtController> _controllers;

        internal ControllerCommandRunner()
        {
            _controllers = LoadControllers();
        }

        protected override SdkTbtBase GetController(string id)
        {
            if (_controllers.ContainsKey(id))
            {
                return _controllers[id];
            }
            throw new TbtException(TbtStatus.SDK_INVALID_CONTROLLER_ID);
        }

        /// <summary>
        /// Loads the controller list from API
        /// </summary>
        /// <returns>Controller dictionary (key is controller ID)</returns>
        private static Dictionary<string, SdkTbtController> LoadControllers()
        {
            Dictionary<string, SdkTbtController> controllers;
            controllers = SdkTbtController.GetControllers();
            if (!controllers.Any())
            {
                throw new TbtException(TbtStatus.SDK_NO_CONTROLLERS,
                    Resources.NoControllerStringPart0 + "\n"
                    + Resources.NoDeviceStringPart1 + "\n"
                    + Resources.NoDeviceStringPart2CMD);
            }
            return controllers;
        }

        /// <summary>
        /// Prints the controller list
        /// </summary>
        internal void EnumControllers()
        {
            foreach (var controller in _controllers)
            {
                if (Utilities.IsSupported(controller.Key))
                {
                    Console.WriteLine(controller.Key);
                }
            }
        }
    }
}
