using System.Collections.Generic;
using System;
using System.Globalization;
using System.Text;
using Newtonsoft.Json.Linq;
using System.Linq;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.Logging;

namespace AyaNova.PickList
{

    internal static class PickListSqlBuilder
    {

        //Build the query for a picklist request
        internal static string Build(IAyaPickList pickList, List<string> templateColumnNames, string autoCompleteQuery)
        {

//TODO: if no autocompletequery returns the first XX results without querying in natural order by column names
//if autocomplete returns teh first XX results with query in natural order by column names

            //TODO: build a sql List<AyaPickListFieldDefinition> columnDefinitionsselect and order by and a where clause that searches appropriately in each field (tags)
            //it should return results based on the query where there is a single name (display) column and an id column for rowid
            //and the fields should be combined in a standard way separated by spaces "Widget widgetserial username" for compactness

            //lists to collect the clauses so to avoid comma fuckery
            List<string> lSelect = new List<string>();
            List<string> lWhere = new List<string>();


            //Add rowid column as it's always required
            AyaPickListFieldDefinition rowIdColumn = pickList.ColumnDefinitions.FirstOrDefault(x => x.IsRowId == true);
            lSelect.Add(rowIdColumn.SqlIdColumnName + " AS rowid");

            foreach (string ColumnName in templateColumnNames)
            {

                AyaPickListFieldDefinition o = pickList.ColumnDefinitions.FirstOrDefault(x => x.FieldKey == ColumnName);
#if (DEBUG)                
                if (o == null)
                {
                    throw new System.ArgumentNullException($"DEV ERROR in PickListSqlBuilder.cs: field {ColumnName} specified in template was NOT found in columnDefinitions list");
                }
#endif
                if (o != null)
                {//Ignore missing fields in production

                    var valueColumnName = o.GetSqlValueColumnName();
                  
                   lSelect.Add(valueColumnName);
                    string sWhere=$"{valueColumnName} LIKE '%{autoCompleteQuery"






                }
            }


            return sbSelect.ToString() + pickList.SQLFrom + sbWhere.ToString();

        }



    }//eoc
}//ens