//Released under the MIT License.
//
//Copyright (c) 2015 Ntreev Soft co., Ltd.
//
//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.Collections.Generic;
using System.Linq;
using System.Text;

namespace Ntreev.Library.Psd.Readers.LayerAndMaskInformation
{
    class LayerExtraRecordsBlock : LazyDataReader
    {
        private LayerRecords layerRecords;

        private LayerExtraRecordsBlock(PsdReader reader, LayerRecords records)
        {
            Init(reader, true, records);
        }

        public LayerRecords LayerRecords
        {
            get
            {
                ReadData();
                return layerRecords;
            }

            set
            {
              layerRecords = value;
            }
        }

        public static LayerRecords Read(PsdReader reader, LayerRecords records)
        {
            LayerExtraRecordsBlock instance = new LayerExtraRecordsBlock(reader, records);
            return instance.LayerRecords;
        }

        protected override long ReadLength(PsdReader reader)
        {
            return reader.ReadUInt32();
        }

        protected override void ReadData(PsdReader reader, object userData)
        {
            LayerRecords records = userData as LayerRecords;
            LayerMaskBlock mask = LayerMaskBlock.Read(reader);
            LayerBlendingRangesBlock blendingRanges = LayerBlendingRangesBlock.Read(reader);
            string name = reader.ReadPascalString(4);
            var layerResource = new LayerResourceBlock(reader, this.EndPosition - reader.Position);

            records.SetExtraRecords(mask, blendingRanges, layerResource.Resources, name);

            LayerRecords = records;
        }
    }
}
