using System;
using SabreTools.Data.Models.DosCenter;

namespace SabreTools.Serialization.CrossModel
{
    public partial class DosCenter : BaseMetadataSerializer<MetadataFile>
    {
        /// <inheritdoc/>
        public override Data.Models.Metadata.MetadataFile? Serialize(MetadataFile? obj)
        {
            if (obj is null)
                return null;

            var metadataFile = new Data.Models.Metadata.MetadataFile();

            if (obj?.DosCenter is not null)
                metadataFile.Header = ConvertHeaderToInternalModel(obj.DosCenter);

            if (obj?.Game is not null && obj.Game.Length > 0)
                metadataFile.Machine = Array.ConvertAll(obj.Game, ConvertMachineToInternalModel);

            return metadataFile;
        }

        /// <summary>
        /// Convert from <see cref="Models.DosCenter.DosCenter"/> to <see cref="Models.Metadata.Header"/>
        /// </summary>
        private static Data.Models.Metadata.Header ConvertHeaderToInternalModel(Data.Models.DosCenter.DosCenter item)
        {
            var header = new Data.Models.Metadata.Header
            {
                Name =  item.Name,
                Description = item.Description,
                Version = item.Version,
                Date = item.Date,
                Author = item.Author,
                Homepage = item.Homepage,
                Comment = item.Comment,
            };
            return header;
        }

        /// <summary>
        /// Convert from <see cref="Game"/> to <see cref="Models.Metadata.Machine"/>
        /// </summary>
        private static Data.Models.Metadata.Machine ConvertMachineToInternalModel(Game item)
        {
            var machine = new Data.Models.Metadata.Machine
            {
                Name = item.Name,
            };

            if (item.File is not null && item.File.Length > 0)
                machine.Rom = Array.ConvertAll(item.File, ConvertToInternalModel);

            return machine;
        }

        /// <summary>
        /// Convert from <see cref="File"/> to <see cref="Models.Metadata.Rom"/>
        /// </summary>
        private static Data.Models.Metadata.Rom ConvertToInternalModel(File item)
        {
            var rom = new Data.Models.Metadata.Rom
            {
                Name = item.Name,
                Size = item.Size,
                CRC32 = item.CRC,
                SHA1 = item.SHA1,
                Date = item.Date,
            };
            return rom;
        }
    }
}