using System.Text;

namespace DTS.Common.ISO
{
    public class IsoCode
    {
        private readonly char[] _isoCodeFull = { '0', '0', '0', '0', '0', '0', '0', '0', '0', '0', '0', '0', '0', '0', '0', '0' };

        private char _testObject
        {
            get => _isoCodeFull[0];
            set => _isoCodeFull[0] = value;
        }

        public string TestObject
        {
            get => new string(new[] { _testObject });
            set => _testObject = string.IsNullOrEmpty(value) ? '?' : value[0];
        }

        private char _position
        {
            get => _isoCodeFull[1];
            set => _isoCodeFull[1] = value;
        }

        public string Position
        {
            get => new string(new[] { _position });
            set => _position = string.IsNullOrEmpty(value) ? '?' : value[0];
        }
        private char[] _mainLocation
        {
            get => new[] { _isoCodeFull[2], _isoCodeFull[3], _isoCodeFull[4], _isoCodeFull[5] };
            set
            {
                for (var i = 0; i < 4; i++)
                {
                    if (value.Length <= i) { _isoCodeFull[i + 2] = '0'; }
                    else { _isoCodeFull[i + 2] = value[i]; }
                }
            }
        }

        public string MainLocation
        {
            get => new string(_mainLocation);
            set
            {
                var main = value;
                if (main.Length < 4) { main = main.PadRight(4, '?'); }
                else if (main.Length > 4) { main = main.Substring(0, 4); }
                _mainLocation = main.ToCharArray(0, 4);
            }
        }

        private char[] _fineLocation1
        {
            get => new[] { _isoCodeFull[6], _isoCodeFull[7] };
            set
            {
                for (var i = 0; i < 2; i++)
                {
                    _isoCodeFull[i + 6] = value.Length < i ? '0' : value[i];
                }
            }
        }
        public string FineLocation1
        {
            get => new string(_fineLocation1);
            set
            {
                var loc = value;
                if (loc.Length < 2) { loc = loc.PadRight(2, '?'); }
                _fineLocation1 = loc.ToCharArray(0, 2);
            }
        }
        private char[] _fineLocation2
        {
            get => new[] { _isoCodeFull[8], _isoCodeFull[9] };
            set
            {
                for (var i = 0; i < 2; i++)
                {
                    if (value.Length < i) { _isoCodeFull[i + 8] = '0'; }
                    else { _isoCodeFull[i + 8] = value[i]; }
                }
            }
        }
        public string FineLocation2
        {
            get => new string(_fineLocation2);
            set
            {
                var loc = value;
                if (loc.Length < 2) { loc = loc.PadRight(2, '?'); }
                _fineLocation2 = loc.ToCharArray(0, 2);
            }
        }
        private char[] _fineLocation3
        {
            get => new[] { _isoCodeFull[10], _isoCodeFull[11] };
            set
            {
                for (var i = 0; i < 2; i++)
                {
                    if (value.Length < i) { _isoCodeFull[i + 10] = '0'; }
                    else { _isoCodeFull[i + 10] = value[i]; }
                }
            }
        }
        public string FineLocation3
        {
            get => new string(_fineLocation3);
            set
            {
                var loc = value;
                if (loc.Length < 2) { loc = loc.PadRight(2, '?'); }
                _fineLocation3 = loc.ToCharArray(0, 2);
            }
        }
        private char[] _physicalDimension
        {
            get => new[] { _isoCodeFull[12], _isoCodeFull[13] };
            set
            {
                for (var i = 0; i < 2; i++)
                {
                    if (value.Length < i) { _isoCodeFull[i + 12] = '0'; }
                    else { _isoCodeFull[i + 12] = value[i]; }
                }
            }
        }
        public string PhysicalDimension
        {
            get => new string(_physicalDimension);
            set
            {
                var dim = value;
                if (dim.Length < 2) { dim = dim.PadRight(2, '?'); }
                else if (dim.Length > 2) { dim = dim.Substring(0, 2); }
                _physicalDimension = dim.ToCharArray(0, 2);
            }
        }

        private char _direction
        {
            get => _isoCodeFull[14];
            set => _isoCodeFull[14] = value;
        }

        public string Direction
        {
            get => new string(new[] { _direction });
            set
            {
                if (string.IsNullOrEmpty(value)) { _direction = '?'; }
                else { _direction = value[0]; }
            }
        }

        private char _filterClass
        {
            get => _isoCodeFull[15];
            set => _isoCodeFull[15] = value;
        }

        public string FilterClass
        {
            get => new string(new[] { _filterClass });
            set => _filterClass = string.IsNullOrEmpty(value) ? '?' : value[0];
        }

        public IsoCode(string isoCode)
        {
            if (null == isoCode) { isoCode = ""; }
            if (isoCode.Length > 16) { isoCode = isoCode.Substring(0, 16); }
            if (isoCode.Length < 16)
            {
                isoCode = isoCode.PadRight(16, '?');
            }
            for (var i = 0; i < 16; i++) { _isoCodeFull[i] = isoCode[i]; }
        }
        public string StringRepresentation
        {
            get
            {
                var sb = new StringBuilder();
                foreach (var c in _isoCodeFull) { sb.Append(c); }
                return sb.ToString();
            }
            set
            {
                for (var i = 0; i < 16; i++)
                {
                    if (i >= value.Length) { _isoCodeFull[i] = '0'; }
                    else { _isoCodeFull[i] = value[i]; }
                }
            }
        }
    }
}