using DaSaSo.Domain.Model;
using DaSaSo.Domain.Services;
using DaSaSo.EntityFramework.Services.Common;
using Microsoft.EntityFrameworkCore;
using Microsoft.EntityFrameworkCore.ChangeTracking;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace DaSaSo.EntityFramework.Services
{
    public class GenericDataService<T> : IDataService<T> where T : DomainObject
    {
        private readonly DaSaSoDbContextFactory _contextFactory;
        private readonly NonQueryDataService<T> _nonQueryDataService;

        public GenericDataService(DaSaSoDbContextFactory contextFactory)
        {
            this._contextFactory = contextFactory;
            _nonQueryDataService = new NonQueryDataService<T>(contextFactory);
        }

        public async Task<T> Create(T entity)
        {
            return await _nonQueryDataService.Create(entity);
        }

        public T CreateNonAsync(T entity)
        {
            return _nonQueryDataService.CreateNonAsync(entity);
        }

        public async Task<bool> Delete(int id)
        {
            return await _nonQueryDataService.Delete(id);
        }

        public async Task<T> Get(int id)
        {
            using (DaSaSoDbContext context = _contextFactory.CreateDbContext())
            {
                T entity = await context.Set<T>().FirstOrDefaultAsync((e) => e.Id == id);
                
                return entity;
            }
        }

        public async Task<IEnumerable<T>> GetAll()
        {
            using (DaSaSoDbContext context = _contextFactory.CreateDbContext())
            {
                IEnumerable<T> entities = await context.Set<T>().ToListAsync();

                return entities;
            }
        }

        public async Task<T> Update(int id, T entity)
        {
            return await _nonQueryDataService.Update(id, entity);
        }

        T IDataService<T>.CreateNonAsync(T entity)
        {
            return _nonQueryDataService.CreateNonAsync(entity);
        }
    }
}


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