using Npgsql;
using SewerStammGen.Shared.Contracts;
using SewerStammGen.Shared.Domain;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace SewerStammGen.DAL.Services.PostgresqlData
{
    public class HaltungDataService : PostgresqlDataService, IHaltungDataService
    {
        public HaltungDataService(string connectionstring) : base(connectionstring, "Kanaele")
        {
        }

        public Task<Kanal> Create(Kanal entity)
        {
            throw new NotImplementedException();
        }

        public Task<Kanal> Get(int id)
        {
            throw new NotImplementedException();
        }

        public Task<IEnumerable<Kanal>> GetAll()
        {
            throw new NotImplementedException();
        }

        public async Task<IEnumerable<Kanal>> GetAllByProjekt(int projektID)
        {
            List<Kanal> result = new List<Kanal>();
            ISchachtDataService schachtDataService = new SchachtDataService(connString);
            IEnumerable<Schacht> schaechte = await schachtDataService.GetAllByProjekt(projektID);

            string command = "SELECT * FROM " + tableName + " WHERE \"ProjektId\" = @1";
            using (var cmd = new NpgsqlCommand(command, conn))
            {
                cmd.Parameters.AddWithValue("1", projektID);
                using (var reader = await cmd.ExecuteReaderAsync())
                {
                    while(reader.Read())
                    {
                        Kanal adding = parseHaltung(reader);

                        adding.StartSchacht = schaechte.Where(x => x.Id == reader.GetInt32(2)).Last();
                        adding.EndSchacht = schaechte.Where(x => x.Id == reader.GetInt32(3)).Last();
                        result.Add(adding);
                    }
                }
            }
            return result;

        }

        private Kanal parseHaltung(NpgsqlDataReader reader)
        {
            return new Kanal()
            {
                Id = reader.GetInt32(0),
                Objektbezeichnung = reader.GetString(1),
                //StartSchacht = reader.GetInt32(2),
                //EndSchacht = reader.GetInt32(3),
                DN = reader.GetInt32(4),
                Material = reader.GetString(5),
                Haltungslaenge = reader.GetDecimal(6),
                Entwaesserung = (EEntwaeserung)reader.GetInt32(7),
                Projekt = new Projekt() { Id = reader.GetInt32(8) }
            };
        }

        public async Task<IEnumerable<Kanal>> GetAllByProjekt(Projekt projekt)
        {
            return await GetAllByProjekt(projekt.Id);
        }

        public Task<Kanal> Update(Kanal entity)
        {
            throw new NotImplementedException();
        }
    }
}