using System;
using System.Collections.Generic;
using System.Text;
using System.Runtime.InteropServices;
using Biff8Excel.Interfaces;

namespace Biff8Excel.Records
{
    [StructLayoutAttribute(LayoutKind.Sequential, CharSet = CharSet.Auto, Pack = 1)]
    internal struct StructMergedCells
    {
        public ushort mcFirstRow;
        public ushort mcLastRow;
        public ushort mcFirstCol;
        public ushort mcLastCol;
    }

    [StructLayoutAttribute(LayoutKind.Sequential, CharSet = CharSet.Auto, Pack = 1)]
    struct RecordMergedCells
    {
        public ushort opcode;
        public ushort length;
        public ushort total;
    }

    internal class MergedCells : IRecords
    {
        RecordMergedCells mergedcells;
        StructMergedCells[] structmergedcells;

        public MergedCells()
        {
            mergedcells.opcode = 0xE5;
        }

        public StructMergedCells[] SetMergedCells
        {
            set
            {
                try
                {
                    mergedcells.total = (ushort)value.Length;
                    structmergedcells = value;
                }
                catch
                {
                    throw;
                }
            }
        }

        #region IRecords ³ΙΤ±

        public byte[] GetByte()
        {
            int len = 6 + (8 * mergedcells.total);
            byte[] b = new byte[len];

            mergedcells.length = (ushort)(len - 4);
            Globals.GetStructToBytes(mergedcells).CopyTo(b, 0);
            int pos = 6;
            for (int i = 0; i < mergedcells.total; i++, pos += 8)
            {
                Globals.GetStructToBytes(structmergedcells[i]).CopyTo(b, pos);
            }
            return b;
        }

        #endregion
    }
}