using System;
using System.Collections.Generic;
using Dapper;
using DataModel.Models;
using DDTek.Oracle;

namespace DataModel.Process
{
    /// <summary>
    /// MIS data loader for CMS interface
    /// </summary>
    public partial class CMS
    {
        /// <summary>
        /// Fetches updates for MIS data
        /// </summary>
        /// <param name="lastUpdateDT">Timestamp of last imported data</param>
        /// <returns>Streaming updates for MIS data</returns>
        public static IEnumerable<MisData> GetMisData(DateTime? lastUpdateDT = null)
        {
            using (OracleConnection connection = GetConnection())
            {
                var results = lastUpdateDT.HasValue ?
                    connection.Query<MisData>(queries["SQL_GET_MIS_DATA_FILTERED"], new { lastUpdateDT }, buffered: false, commandTimeout: 1200*50) :
                    connection.Query<MisData>(queries["SQL_GET_MIS_DATA"], buffered: false, commandTimeout: 1200*50);

                foreach (var result in results)
                {
                    if (result.ReleaseDate.HasValue)
                    {
                        result.ReleaseDate = result.ReleaseDate.Value.ToLocalTime();
                    }

                    yield return result;
                }
            }
        }
    }
}