Datenbankunterstützung hinzugefügt

BuecherwurmAPI.csproj

@@ -7,6 +7,14 @@
   <ItemGroup>
     <PackageReference Include="AutoMapper.Extensions.Microsoft.DependencyInjection" Version="7.0.0" />
     <PackageReference Include="Microsoft.AspNetCore.Mvc.NewtonsoftJson" Version="3.1.4" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore.Sqlite" Version="3.1.4" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <None Remove="LongWormMemory.db" />
+    <Resource Include="LongWormMemory.db">
+      <CopyToOutputDirectory>Always</CopyToOutputDirectory>
+    </Resource>
   </ItemGroup>
 
 

Controllers/LendController.cs

@@ -16,10 +16,10 @@ namespace BuecherwurmAPI.Controllers
     [ApiController]
     public class LendController : ControllerBase
     {
-        private readonly ILendRepo _repository;
+        private readonly IRepository _repository;
         private readonly IMapper _mapper;
         
-        public LendController(ILendRepo repository, IMapper mapper)
+        public LendController(IRepository repository, IMapper mapper)
         {
             _repository = repository;
             _mapper = mapper;

Data/IRepository.cs

@@ -0,0 +1,11 @@
+using System.Collections.Generic;
+using BuecherwurmAPI.Models;
+
+namespace BuecherwurmAPI.Data
+{
+    public interface IRepository
+    {
+        IEnumerable<Lend> GetAllLends();
+        Lend GetLendById(int id);
+    }
+}

Data/Repository.cs

@@ -0,0 +1,51 @@
+using System;
+using System.Collections.Generic;
+using BuecherwurmAPI.Models;
+using Microsoft.Data.Sqlite;
+
+namespace BuecherwurmAPI.Data
+{
+    internal class Repository : IRepository
+    {
+        private SqliteConnection _dbConnection;
+
+        public Repository()
+        {
+            var connectionBuilder = new SqliteConnectionStringBuilder {DataSource = "LongWormMemory.db"};
+            _dbConnection = new SqliteConnection(connectionBuilder.ConnectionString);
+            _dbConnection.Open();
+        }
+
+        public IEnumerable<Lend> GetAllLends()
+        {
+            var lends = new List<Lend>();
+
+            // using automatically disposes the command after completion
+            using (var command = _dbConnection.CreateCommand())
+            {
+                command.CommandText = @"SELECT * FROM Lends";
+                var dataReader = command.ExecuteReader();
+                
+                while (dataReader.Read())
+                {
+                    var returned = (long) dataReader["Returned"] == 0;
+                    
+                    lends.Add(new Lend
+                    {
+                        Id = (long) dataReader["Id"],
+                        Customer = (string) dataReader["Customer"],
+                        ItemId = (long) dataReader["ItemId"],
+                        Returned = !returned,
+                        ReturnDate = DateTime.Parse((string)dataReader["ReturnDate"])
+                    });
+                }
+            }
+            return lends;
+        }
+
+        public Lend GetLendById(int id)
+        {
+            return new Lend{Id = 1, Customer = "Nek0", ItemId = 1337, Returned = false, ReturnDate = DateTime.Now};
+        }
+    }
+}

Models/Lend.cs

@@ -4,8 +4,8 @@ namespace BuecherwurmAPI.Models
 {
     public class Lend
     {
-        public int Id { get; set; }
+        public long Id { get; set; }
-        public int ItemId { get; set;}
+        public long ItemId { get; set;}
         public DateTime ReturnDate { get; set; }
         public string Customer { get; set;  }
         public bool Returned { get; set; }

Startup.cs

@@ -32,7 +32,7 @@ namespace BuecherwurmAPI
             // Adds a service that is created once per connection.
             // It takes an interface and a specific implementation.
             // That allows to swap the implementation easily.
-            services.AddScoped<ILendRepo, MockLendRepo>();
+            services.AddScoped<IRepository, Repository>();
 
             services.AddAutoMapper(AppDomain.CurrentDomain.GetAssemblies());
         }