session-companion/SessionCompanion/SessionCompanion.Services/Services/StatisticsService.cs

using AutoMapper;
using Microsoft.EntityFrameworkCore;
using SessionCompanion.Database.Repositories.Base;
using SessionCompanion.Database.Tables;
using SessionCompanion.Services.Base;
using SessionCompanion.Services.Interfaces;
using SessionCompanion.ViewModels.StatisticsViewModels;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace SessionCompanion.Services.Services
{
    public class StatisticsService : ServiceBase<StatisticsViewModel, Statistics>, IStatisticsService
    {
        public StatisticsService(IMapper mapper, IRepository<Statistics> repository) : base(mapper, repository)
        { }
        /// <summary>
        /// Method subtract hp from given character
        /// </summary>
        /// <param name="characterId"></param>
        /// <param name="hpToSubtract"></param>
        /// <returns></returns>
        public async Task SubtractHp(int characterId, int hpToSubtract)
        {
            var result = await Repository.Get(c => c.Id.Equals(characterId)).SingleAsync();
            result.CurrentHealthPoints -= hpToSubtract;
            await Repository.Update(result);
            await Repository.Save();
        }
    }
}