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 SELECT portion of a list query based on the ListView fields 
        internal static string Build(List<AyaPickListFieldDefinition> objectFieldsList, List<string> listViewFieldList)
        {
            throw new System.NotImplementedException();

//             StringBuilder sb = new StringBuilder();
//             sb.Append("SELECT ");

//             //DEPRECATED
//             // //Default ID column for each row (always is aliased as df)
//             // AyaPickListFieldDefinition def = objectFieldsList.FirstOrDefault(x => x.FieldKey == "df");
//             // if (def == null)
//             // {
//             //     throw new System.ArgumentNullException("PickListSqlSelectBuilder: objectFieldList is missing the df default field");
//             // }
//             // if (string.IsNullOrEmpty(def.SqlIdColumnName))
//             // {
//             //     sb.Append("id");//default when no alternate column is specified
//             // }
//             // else
//             // {
//             //     sb.Append(def.SqlIdColumnName);
//             // }

//             // sb.Append(" AS df");

//             //keep track of which custom fields columns were added already
//             //this ensures that if there is more than one set of custom fields like from two different objects in the list
//             //only unique ones will be returned by query
//             // Dictionary<string, int> CustomFieldColumnsAddedToQuery = new Dictionary<string, int>();
//             //map sql column name to ordinal name
//             Dictionary<string, int> map = new Dictionary<string, int>();

//             //DEPRECATED map.Add("df", 0);
//             int nOrdinal = 0;

//             var firstColumnAdded = false;
//             foreach (string ColumnName in listViewFieldList)
//             {
//                 // //skip the df column, it's already been processed above
//                 // if (ColumnName == "df")
//                 //     continue;
//                 AyaPickListFieldDefinition o = objectFieldsList.FirstOrDefault(x => x.FieldKey == ColumnName);
// #if (DEBUG)
//                 //Developers little helper
//                 if (o == null)
//                 {
//                     throw new System.ArgumentNullException($"DEV ERROR in PickListSqlSelectBuilder.cs: field {ColumnName} specified in template was NOT found in ObjectFields list");
//                 }
// #endif
//                 if (o != null)
//                 {//Ignore missing fields in production


//                     if (o.IsCustomField)
//                     { //if any are custom field then add custom fields column to query
//                         var CustomFieldSqlColumnName = o.GetSqlValueColumnName();
//                         //has it been added yet?
//                         if (!map.ContainsKey(CustomFieldSqlColumnName))
//                         { //nope
//                             if (firstColumnAdded)
//                                 sb.Append(", ");
//                             sb.Append(CustomFieldSqlColumnName);
//                             firstColumnAdded = true;
//                             map.Add(CustomFieldSqlColumnName, nOrdinal++);
//                         }
//                         //if it was already added then can just ignore it
//                         // else
//                         // {
//                         //     map.Add(ColumnName, CustomFieldColumnsAddedToQuery[CustomFieldSqlColumnName]);
//                         // }

//                     }
//                     else
//                     {
//                         var valueColumnName = o.GetSqlValueColumnName();
//                         if (!map.ContainsKey(valueColumnName))
//                         {
//                             if (firstColumnAdded)
//                                 sb.Append(", ");
//                             sb.Append(valueColumnName);
//                             firstColumnAdded = true;
//                             map.Add(valueColumnName, nOrdinal++);
//                         }

//                         //does it also have an ID column?
//                         var idColumnName = o.SqlIdColumnName;
//                         if (!string.IsNullOrWhiteSpace(idColumnName))
//                         {
//                             if (!map.ContainsKey(idColumnName))
//                             {
//                                 if (firstColumnAdded)
//                                     sb.Append(", ");
//                                 sb.Append(idColumnName);
//                                 firstColumnAdded = true;
//                                 map.Add(idColumnName, nOrdinal++);
//                             }
//                         }

//                     }

//                 }
//             }
//            // return new SqlSelectBuilderResult() { map = map, Select = sb.ToString() };


        }



    }//eoc
}//ens