From b588292daf2b6e9ba8771fe622094d5f1e189ca3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Karol=20G=C3=B3rzy=C5=84ski?= <kargor8@st.amu.edu.pl>
Date: Thu, 7 Jan 2021 18:05:22 +0100
Subject: [PATCH] SES-134 Add service to subtract HP

---
 .../Intefraces/IStatisticsService.cs                |  1 +
 .../Services/StatisticsService.cs                   | 13 +++++++++++++
 2 files changed, 14 insertions(+)

diff --git a/SessionCompanion/SessionCompanion.Services/Intefraces/IStatisticsService.cs b/SessionCompanion/SessionCompanion.Services/Intefraces/IStatisticsService.cs
index f624e0c..0aede4b 100644
--- a/SessionCompanion/SessionCompanion.Services/Intefraces/IStatisticsService.cs
+++ b/SessionCompanion/SessionCompanion.Services/Intefraces/IStatisticsService.cs
@@ -10,5 +10,6 @@ namespace SessionCompanion.Services.Interfaces
 {
     public interface IStatisticsService : IServiceBase<StatisticsViewModel, Statistics>
     {
+        Task SubtractHp(int characterId, int hpToSubtract);
     }
 }
diff --git a/SessionCompanion/SessionCompanion.Services/Services/StatisticsService.cs b/SessionCompanion/SessionCompanion.Services/Services/StatisticsService.cs
index 42935e5..6a0074a 100644
--- a/SessionCompanion/SessionCompanion.Services/Services/StatisticsService.cs
+++ b/SessionCompanion/SessionCompanion.Services/Services/StatisticsService.cs
@@ -17,5 +17,18 @@ namespace SessionCompanion.Services.Services
     {
         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();
+        }
     }
 }