From 2bcaa82e555100ffbcf6b23dd330e7bddd67cad6 Mon Sep 17 00:00:00 2001
From: transtrike <transtrike@gmail.com>
Date: Tue, 8 Dec 2020 20:38:05 +0200
Subject: DbRepository implemented

---
 API/Database/DbRepository.cs           | 65 +++++++++++++++++++++++++++++++++-
 API/Database/Interfaces/IRepository.cs | 24 +++++++++++++
 2 files changed, 88 insertions(+), 1 deletion(-)
 create mode 100644 API/Database/Interfaces/IRepository.cs

diff --git a/API/Database/DbRepository.cs b/API/Database/DbRepository.cs
index a166682..5540104 100644
--- a/API/Database/DbRepository.cs
+++ b/API/Database/DbRepository.cs
@@ -1,4 +1,67 @@
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+using Camera_Shop.Database;
+using Microsoft.EntityFrameworkCore;
+
 namespace API.Database
 {
-	
+	public class DbRepository<TEntity> : IRepository<TEntity>
+		where TEntity : class
+	{
+		private readonly DbContext _context;
+		public DbRepository(DbContext context)
+		{
+			_context = context;
+		}
+
+		//Create
+		public async Task AddAsync(TEntity entity)
+		{
+			await this._context
+				.Set<TEntity>()
+				.AddAsync(entity);
+
+			await this._context.SaveChangesAsync();
+		}
+
+		//Read
+		public async Task<TEntity> FindByIdAsync(object id)
+		{
+			return await this._context
+				.Set<TEntity>()
+				.FindAsync(id);
+		}
+
+		public async Task<IAsyncEnumerable<TEntity>> Query(int count)
+		{
+			return this._context
+				.Set<TEntity>()
+				.Take(count)
+				.AsAsyncEnumerable();
+		}
+
+		//Update
+		public async Task EditAsync(object id, TEntity newEntity)
+		{
+			//Set the Id property to the given id
+			TEntity entity = await FindByIdAsync(id);
+
+			this._context.Entry(entity)
+				.CurrentValues
+				.SetValues(newEntity);
+
+			await this._context.SaveChangesAsync();
+		}
+
+		//Delete
+		public async Task DeleteAsync(object id)
+		{
+			TEntity entity = await FindByIdAsync(id);
+
+			this._context.Set<TEntity>().Remove(entity);
+
+			await this._context.SaveChangesAsync();
+		}
+	}
 }
\ No newline at end of file
diff --git a/API/Database/Interfaces/IRepository.cs b/API/Database/Interfaces/IRepository.cs
new file mode 100644
index 0000000..927e006
--- /dev/null
+++ b/API/Database/Interfaces/IRepository.cs
@@ -0,0 +1,24 @@
+using System.Collections.Generic;
+using System.Threading.Tasks;
+
+namespace Camera_Shop.Database
+{
+	public interface IRepository<TEntity>
+		where TEntity : class
+	{
+		//Add Entity to database
+		Task AddAsync(TEntity entity);
+
+		//Return *count* instances of Entity from the database
+		Task<IAsyncEnumerable<TEntity>> Query(int count);
+
+		//Find entity by id
+		Task<TEntity> FindByIdAsync(object id);
+
+		//Modify Entity from database
+		Task EditAsync(object id, TEntity newEntity);
+
+		//Delete Entity from database
+		Task DeleteAsync(object id);
+	}
+}
\ No newline at end of file
-- 
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