using System;
using System.Collections.Generic;
using System.Data;
using System.Linq;
using System.Net.Security;
using System.Text;
using System.Threading.Tasks;

namespace JRCookbookBusiness
{
    public enum RecipeIngredientLinkType
    {
        Unlinked,
        Ingredient,
        NoLink
    }

    public class RecipeIngredient: ICloneable
    {
        public Guid? recipeIngredientID = null;
        public Guid? recipeID = null;
        public Int32 ingredientIndex = 0;
        public String ingredientText = String.Empty;
        private bool _isHeading = false;
        public RecipeIngredientLinkType linkType = RecipeIngredientLinkType.Unlinked;

        private static SortedList<String, IngredientSkipSearchWord> ingredientSkipWords = null;

        public bool isHeading
        {
            get
            {
                return (this is RecipeIngredientHeading);
            }
        }

        internal string linkTypeAsString
        {
            get
            {
                return Enum.GetName(typeof(RecipeIngredientLinkType), linkType);
            }
        }

        public RecipeIngredientHeading ConvertToHeading()
        {
            if (isHeading)
            {
                return (RecipeIngredientHeading)this;
            }
            else
            {
                RecipeIngredientHeading temp = new RecipeIngredientHeading();
                temp.recipeIngredientID = this.recipeIngredientID;
                temp.recipeID = this.recipeID;
                temp.ingredientIndex = this.ingredientIndex;
                temp.ingredientText = this.ingredientText;
                temp.linkType = RecipeIngredientLinkType.NoLink;

                return temp;
            }
        }
        public RecipeIngredientItem ConvertToItem()
        {
            if (!isHeading)
            {
                return (RecipeIngredientItem)this;
            }
            else
            {
                RecipeIngredientItem temp = new RecipeIngredientItem();
                temp.recipeIngredientID = this.recipeIngredientID;
                temp.recipeID = this.recipeID;
                temp.ingredientIndex = this.ingredientIndex;
                temp.ingredientText = this.ingredientText;
                temp.linkType = RecipeIngredientLinkType.Unlinked;
                temp.linkQuality = 0;

                return temp;
            }
        }

        //protected RecipeIngredient()
        //{
        //}

        public void PasteIntoChapter(Guid newRecipeID)
        {
            this.recipeIngredientID = null;
            this.recipeID = newRecipeID;
        }

        public void Save()
        {
            if (this.recipeIngredientID == null)
            {
                this.recipeIngredientID = clsDatabaseLayer.GetDatabaseLayer().GetNewIDRecipeIngredient();
                clsDatabaseLayer.GetDatabaseLayer().InsertRecipeIngredient(this);
            }
            else
            {
                clsDatabaseLayer.GetDatabaseLayer().UpdateRecipeIngredient(this);
            }
        }
        
        public void Delete()
        {
            clsDatabaseLayer.GetDatabaseLayer().DeleteRecipeIngredientByID(recipeIngredientID.Value);
        }

        public static void DeleteAllByRecipeID(Guid recipeID)
        {
            clsDatabaseLayer.GetDatabaseLayer().DeleteRecipeIngredientsByRecipeID(recipeID);
        }

        public static RecipeIngredient GetRecipeIngredientByID(Guid recipeIngredientID)
        {
            DataSet recordSet;
            recordSet = clsDatabaseLayer.GetDatabaseLayer().GetRecipeIngredientByID(recipeIngredientID);

            var row = recordSet.Tables[0].Rows[0];
            return GetRecipeIngredientByDataRow(row);
        }

        internal static RecipeIngredient GetRecipeIngredientByDataRow(DataRow recipeIngredientDataRow)
        {
            if (recipeIngredientDataRow["Heading"].ToString() == "Y")
            {
                var recipeIngredientHeading = new RecipeIngredientHeading();
                recipeIngredientHeading.PopulateFromDataRow(recipeIngredientDataRow);
                return recipeIngredientHeading;
            }
            else
            {
                var recipeIngredientItem = new RecipeIngredientItem();
                recipeIngredientItem.PopulateFromDataRow(recipeIngredientDataRow);
                return recipeIngredientItem;
            }
        }

        internal virtual void PopulateFromDataRow(DataRow dataRow)
        {
            //initializing in child objects

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

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

            if (dataRow.IsNull("ingredientindex"))
                ingredientIndex = 0;
            else
                ingredientIndex = (Int32)dataRow["ingredientindex"];

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

            if (dataRow.IsNull("Heading"))
                _isHeading = false;
            else
                _isHeading = (((String)dataRow["Heading"]).ToUpper() == "Y");


            if (dataRow.IsNull("linkType"))
                linkType = RecipeIngredientLinkType.Unlinked;
            else
                linkType = (RecipeIngredientLinkType)Enum.Parse(typeof(RecipeIngredientLinkType),(String)dataRow["linkType"]);

            //Convert back to string
            //String t = Enum.GetName(typeof(Roles), roleValue);


        }

        protected virtual void InitializeAllFields()
        {
            recipeIngredientID = null;
            recipeID = null;
            ingredientIndex = 0;
            ingredientText = String.Empty;
            _isHeading = false;
            linkType = RecipeIngredientLinkType.Unlinked;


        }

        public static String NormalizeRecipeIngredientName(String strInputRecipeIngredientName)
        {
            LoadSkipWords();

            strInputRecipeIngredientName = clsDiacriticRemover.RemoveDiacritics(strInputRecipeIngredientName).ToLower();

            StringBuilder thisWord = new StringBuilder();

            SortedList<String,String> allWords = new SortedList<String, String>();

            foreach (var thisChar in strInputRecipeIngredientName)
            {
                if (thisChar >= 'a' && thisChar <= 'z')
                {
                    thisWord.Append(thisChar);
                }
                else
                {
                    if (thisWord.Length > 0)
                    {
                        String fullWord = thisWord.ToString();

                        if (!allWords.ContainsKey(fullWord))
                        {
                            allWords.Add(fullWord,fullWord);

                        }

                        thisWord.Clear();
                    }
                }
            }

            if (thisWord.Length > 0)
            {
                String fullWord = thisWord.ToString();

                if (!allWords.ContainsKey(fullWord))
                {
                    allWords.Add(fullWord, fullWord);

                }

                thisWord.Clear();
            }

            StringBuilder normalizedName = new StringBuilder();

            foreach (var wordToAdd in allWords.Values)
            {
                if (!ingredientSkipWords.ContainsKey(wordToAdd))
                {
                    normalizedName.Append(wordToAdd);
                    normalizedName.Append(' ');
                }
            }

            return normalizedName.ToString().Trim();
        }

        private static void LoadSkipWords()
        {
            if (ingredientSkipWords == null)
            { 
                var ingredientSkipWordsUnsorted = IngredientSkipSearchWord.GetAllIngredientSkipSearchWords();
                ingredientSkipWords = new SortedList<String, IngredientSkipSearchWord>();
                foreach (var loadVal in ingredientSkipWordsUnsorted)
                {
                    ingredientSkipWords.Add(loadVal.word, loadVal);
                }
            }
        }


        public static List<RecipeIngredient> GetRecipeIngredientAll()
        {
            List<RecipeIngredient> allIngredients = new List<RecipeIngredient>();
            DataSet recordSet;
            recordSet = clsDatabaseLayer.GetDatabaseLayer().GetRecipeIngredientAll();

            foreach (DataRow row in recordSet.Tables[0].Rows)
            {
                var recipeIngredient = GetRecipeIngredientByDataRow(row);
                if (recipeIngredient.isHeading == false)
                {
                    if (((RecipeIngredientItem)recipeIngredient).ingredientID != null)
                    {
                        allIngredients.Add(recipeIngredient);
                    }
                }
            }

            return allIngredients;
        }


        public object Clone()
        {
            return this.MemberwiseClone();
        }
    }
}