/// Copyright (c) 2021 Iiro Iivanainen, Harri Linna, Jere Pakkanen, Riikka Vilavaara
/// 
/// Permission is hereby granted, free of charge, to any person obtaining
/// a copy of this software and associated documentation files (the
/// "Software"), to deal in the Software without restriction, including
/// without limitation the rights to use, copy, modify, merge, publish,
/// distribute, sublicense, and/or sell copies of the Software, and to
/// permit persons to whom the Software is furnished to do so, subject to
/// the following conditions:
/// 
/// The above copyright notice and this permission notice shall be included
/// in all copies or substantial portions of the Software.
/// 
/// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
/// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
/// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
/// IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
/// CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
/// TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
/// SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
/// 

using System;
using System.Numerics;
using System.Text.Json;
using System.Text.Json.Serialization;

namespace CoreLibrary
{
    /// <summary>
    /// WIP JSON converter for Vector3 class
    /// </summary>
    public class Vector3JSONConverter : JsonConverter<Vector3>
    {
        /// <summary>
        /// Override to the default Vector3 deserialization
        /// </summary>
        /// <param name="reader">Json reader</param>
        /// <param name="typeToConvert">Type of data to conver</param>
        /// <param name="options">Options for converting</param>
        /// <returns>Vector 3 read from json file</returns>
        public override Vector3 Read(
            ref Utf8JsonReader reader,
            Type typeToConvert,
            JsonSerializerOptions options) =>
                Vector3FromString(reader.GetString());

        /// <summary>
        /// Gets Vector3 object from the JSON string
        /// </summary>
        /// <param name="text">JSON string containing vector3</param>
        /// <returns>Vector3</returns>
        private static Vector3 Vector3FromString(string text)
        {
            string[] values = text.Split(",");
            return new Vector3(float.Parse(values[0]), float.Parse(values[1]),
                               float.Parse(values[2]));
        }

        /// <summary>
        /// Overrides the default Vector3 serialization
        /// </summary>
        /// <param name="writer">File writer</param>
        /// <param name="vec">Vector3 to be written</param>
        /// <param name="options">Options for serialization</param>
        public override void Write(
            Utf8JsonWriter writer,
            Vector3 vec,
            JsonSerializerOptions options) =>
                writer.WriteStringValue(vec.X + "," + vec.Y + "," + vec.Z);
    }
}