using LangGuan.Command.Model;
using LangGuan.Command.Model.EntityModel;
using Microsoft.Extensions.Configuration;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Linq.Expressions;
using System.Threading.Tasks;

namespace LangGuan.Services
{
    public class DeviceUsedService : BaseService<DeviceUsed>
    {
        public IConfiguration _configuration;
        public DeviceUsedService(IConfiguration config) : base(config, nameof(DeviceUsed))
        {
            _configuration = config;
        }
        public async Task AddDeviceUsed(DeviceUsed input)
        {
            //开启时，每小时，用水，用电
            var water = _configuration.GetSection("water").Value;
            var power = _configuration.GetSection("power").Value;
            var timespan = (input.End - input.Start).TotalSeconds;
            input.Water = Math.Round(float.Parse(water) / 3600 * timespan,2);
            input.Power = Math.Round((float.Parse(power) / 3600 * timespan),2);
            await base.CreateAsync(input);
        }
        /// <summary>
        /// 
        /// </summary>
        /// <returns></returns>
        public async Task<object> GetList(DateTime start, DateTime end)
        {
            Expression<Func<DeviceUsed, bool>> exp = filter => start < filter.CreateDateTime || filter.CreateDateTime <= end.AddDays(1);
            var query = (await base.GetListWithExp(exp)).ToList();
            var items = query.OrderByDescending(s => s.CreateDateTime)
                .Select(s => new { day = s.CreateDateTime.AddHours(8).ToString("yyyy-MM-dd"), s.Power, s.Water }).ToList();

            var result = items.GroupBy(s => s.day).Select(m => new
            {
                day = m.Key,
                water = Math.Round(m.Sum(o => o.Water), 2),
                power = Math.Round(m.Sum(o => o.Power), 2)
            });
            return new
            {
                items = result
            };
        }
        public async Task UpdateDouble()
        {
            Expression<Func<DeviceUsed, bool>> exp = filter => true;
            var query = (await base.GetListWithExp(exp)).ToList();
            foreach (var item in query)
            {
                item.Water = (float)item.Water;
                item.Power = (float)item.Power;
                await base.UpdateAsync(item.Id, item);
            }
        }
    }
}