using System;
using System.Data;

namespace JRCookbookBusiness
{
    public class RecipeIngredientItem: RecipeIngredient
    {
        public Guid? ingredientID = null;
        public String quantityText = String.Empty;
        public String unitText = String.Empty;

        public String measureName = String.Empty;
        private Guid? _measureID = null;
        private bool isMeasureLoaded = false;
        private Measure _measure = null;

        public Single measureQuantity = 0;
        public Int16 linkQuality = 1;

        public RecipeIngredientItem()
        {
            linkQuality = 0;
        }

        public RecipeIngredientItem(Recipe parentRecipe)
        {
            recipeID = parentRecipe.recipeID;
            linkQuality = 0;
        }

        public Measure measure {
            get {
                if (_measureID == null)
                {
                    return null;
                }
                if (!isMeasureLoaded)
                {
                    Measure.GetMeasureByID(_measureID.Value);
                    isMeasureLoaded = true;
                }
                return _measure;
            }
            set
            {
                if (value == null)
                {
                    measureName = String.Empty;
                    _measureID = null;
                    isMeasureLoaded = false;
                    _measure = null;
                }
                else
                {
                    _measure = value;
                    measureName = _measure.description;
                    _measureID = _measure.measureID;
                    isMeasureLoaded = true;
                }
            }
        }

        public Guid? measureID
        {
            get
            {
                return _measureID;
            }
            set
            {
                if (value == null)
                {
                    measureName = String.Empty;
                    _measureID = null;
                    isMeasureLoaded = false;
                    _measure = null;
                }
                _measureID = value;
                _measure = Measure.GetMeasureByID(_measureID.Value);
                isMeasureLoaded = true;
                measureName = _measure.description;
            }
        }




        internal override void PopulateFromDataRow(DataRow dataRow)
        {
            InitializeAllFields();

            base.PopulateFromDataRow(dataRow);

            if (dataRow.IsNull("ingredientID"))
                ingredientID = null;
            else
                ingredientID = (Guid)dataRow["ingredientID"];

            if (dataRow.IsNull("quantityText"))
                quantityText = String.Empty;
            else
                quantityText = (String)dataRow["quantityText"];

            if (dataRow.IsNull("unitText"))
                unitText = String.Empty;
            else
                unitText = (String)dataRow["unitText"];

            if (dataRow.IsNull("measureQuantity"))
                measureQuantity = 0;
            else
                measureQuantity = (Single)dataRow["measureQuantity"];

            if (dataRow.IsNull("linkQuality"))
                linkQuality = 0;
            else
                linkQuality = (Int16)dataRow["linkQuality"];



            if (dataRow.IsNull("measureID"))
                _measureID = null;
            else
                _measureID = (Guid)dataRow["measureID"];

            measureName = String.Empty;
            isMeasureLoaded = false;
            _measure = null;

            if (dataRow.Table.Columns.Contains("measureName") && !dataRow.IsNull("measureName") && !String.IsNullOrEmpty(dataRow[measureName].ToString()))
            {
                measureName = (String)dataRow[measureName];
            }
            else
            {
                if (_measureID != null)
                {
                    measure = Measure.GetMeasureByID(_measureID.Value);
                    isMeasureLoaded = true;
                    measureName = measure.description;
                }
            }
        }

        protected override void InitializeAllFields()
        {
            base.InitializeAllFields();
            
            ingredientID = null;
            quantityText = String.Empty;
            unitText = String.Empty;

            measureName = String.Empty;
            _measureID = null;
            isMeasureLoaded = false;
            _measure = null;

            measureQuantity = 0;
            linkQuality = 0;
        }

    }
}