StreetLight/Assets/StreetLight/Configuration.cs

using Newtonsoft.Json;
using System;
using System.IO;
using UnityEngine;

namespace Assets.StreetLight
{
    public sealed class Configuration
    {
        //private string outputCalibrationFilesDirectory;

        ///// <summary>
        ///// The directory path where new calibration files are saved when the calibration is run.
        ///// </summary>
        //[JsonRequired]
        //public string OutputCalibrationFilesDirectory
        //{
        //    get => outputCalibrationFilesDirectory;
        //    set
        //    {
        //        if (!Directory.Exists(value))
        //        {
        //            throw new InvalidOperationException($"Directory \"{value}\" does not exist.");
        //        }
        //        outputCalibrationFilesDirectory = value;
        //    }
        //}

        //private string inputCalibrationFilePath;
        ///// <summary>
        ///// The file path to the calibration file that is used as input for the actual calibration.
        ///// </summary>
        //[JsonRequired]
        //public string InputCalibrationFilePath
        //{
        //    get => inputCalibrationFilePath;
        //    set
        //    {
        //        if (!File.Exists(value))
        //        {
        //            throw new InvalidOperationException($"File \"{value}\" does not exist.");
        //        }
        //        inputCalibrationFilePath = value;
        //    }
        //}

        private string homographyFilePath;
        /// <summary>
        /// The file path to the csv file containing the homography for mapping world coodrinates to Unity coordinates.
        /// </summary>
        [JsonRequired]
        public string HomographyFilePath
        {
            get => homographyFilePath;
            set
            {
                if (!File.Exists(value))
                {
                    throw new InvalidOperationException($"File \"{value}\" does not exist.");
                }
                homographyFilePath = value;
            }
        }

        private static readonly Lazy<Configuration> lazy = new(() => JsonConvert.DeserializeObject<Configuration>(File.ReadAllText(Path.Combine(Application.streamingAssetsPath, "Configuration.json"))));

        public static Configuration Instance => lazy.Value;

        private Configuration() { }
    }
}