used mongodb as database

RobotsWantedLeague.Test/RobotsWantedLeague.Test.csproj

@@ -20,4 +20,8 @@
     <ProjectReference Include="..\RobotsWantedLeague\RobotsWantedLeague.csproj" />
   </ItemGroup>
 
+  <ItemGroup>
+    <Folder Include="Services\" />
+  </ItemGroup>
+
 </Project>

RobotsWantedLeague.Test/Services/NotEmptyRobotsServiceTest.cs

@@ -1,25 +0,0 @@
-namespace RobotsWantedLeague.Test.Services;
-using RobotsWantedLeague.Models;
-using RobotsWantedLeague.Services;
-
-[TestClass]
-public class NotEmptyRobotsServiceTest
-{
-
-    [TestMethod]
-    public void TestHappyPath()
-    {
-        IRobotsService service = new NotEmptyRobotsService();
-        Assert.AreEqual(3, service.Robots.Count);
-        Robot robot = service.CreateRobot("paul", 2, 3, "canada");
-        Assert.AreEqual(robot.Name, "paul");
-        Assert.AreEqual(robot.Weight, 2);
-
-        Assert.AreEqual(4, service.Robots.Count);
-
-        service.DeleteRobotById(robot.Id);
-        Assert.AreEqual(3, service.Robots.Count);
-    }
-
-
-}

RobotsWantedLeague.Test/Services/RobotsServiceTest.cs

@@ -1,65 +0,0 @@
-namespace RobotsWantedLeague.Test.Services;
-using RobotsWantedLeague.Models;
-using RobotsWantedLeague.Services;
-
-[TestClass]
-public class RobotsServiceTest
-{
-
-    [TestMethod]
-    public void TestCreateRobot()
-    {
-        RobotsService service = new RobotsService();
-        Robot robot = service.CreateRobot("paul", 2, 3, "canada");
-        Assert.AreEqual(robot.Name, "paul");
-        Assert.AreEqual(robot.Weight, 2);
-    }
-
-
-    [TestMethod]
-    public void TestGetRobotById()
-    {
-        RobotsService service = new RobotsService();
-        Assert.IsNull(service.GetRobotById(98));
-        Robot robot = service.CreateRobot("paul", 2, 3, "canada");
-        Robot? ret = service.GetRobotById(robot.Id);
-        Assert.IsNotNull(ret);
-        Assert.AreEqual(robot.Name, ret.Name);
-    }
-
-    [TestMethod]
-    public void TestGetRobotById_MultipleRobots()
-    {
-        RobotsService service = new RobotsService();
-        Robot robot1 = service.CreateRobot("paul", 2, 3, "canada");
-        Robot robot2 = service.CreateRobot("emanuel", 20, 30, "france");
-        Robot? ret = service.GetRobotById(robot2.Id);
-        Assert.IsNotNull(ret);
-        Assert.AreEqual(robot2.Name, ret.Name);
-    }
-
-    [TestMethod]
-    public void TestListRobots()
-    {
-        RobotsService service = new RobotsService();
-        Robot robot1 = service.CreateRobot("paul", 2, 3, "canada");
-        Robot robot2 = service.CreateRobot("emanuel", 20, 30, "france");
-        Assert.AreEqual(2, service.Robots.Count);
-    }
-
-    [TestMethod]
-    public void TestDeleteRobotById()
-    {
-        RobotsService service = new RobotsService();
-        Robot robot1 = service.CreateRobot("paul", 2, 3, "canada");
-        Robot robot2 = service.CreateRobot("emanuel", 20, 30, "france");
-        Robot robot3 = service.CreateRobot("xu", 1, 9, "chine");
-
-        Assert.IsTrue(service.DeleteRobotById(robot2.Id));
-        
-        Assert.AreEqual(2, service.Robots.Count);
-        Assert.IsNull(service.GetRobotById(robot2.Id));
-    }
-
-
-}

RobotsWantedLeague/Controllers/RobotsController.cs

@@ -37,8 +37,8 @@ public class RobotsController : Controller
         return View(robotsService.Robots);
     }
 
-    public IActionResult Robot(int id){
+    public IActionResult Robot(string id){
-        Robot robot = robotsService.GetRobotById(id);
+        Robot? robot = robotsService.GetRobotById(id);
         return View(robot);
     }
 

RobotsWantedLeague/Models/Robot.cs

@@ -1,7 +1,14 @@
+using MongoDB.Bson;
+using MongoDB.Bson.Serialization.Attributes;
+
 namespace RobotsWantedLeague.Models;
 
 public class Robot{
-    public int Id { get; set;}
+    
+    [BsonId]
+    [BsonRepresentation(BsonType.ObjectId)]
+    public string? Id { get; set;}
+    
     public string Name { get; set;}
 
     /**
@@ -16,7 +23,7 @@ public class Robot{
 
     public string Country { get; set;}
 
-    public Robot(int Id, string Name, int Weight, int Height, string Country){
+    public Robot(string? Id, string Name, int Weight, int Height, string Country){
         this.Id = Id;
         this.Name = Name;
         this.Weight = Weight;

RobotsWantedLeague/Models/RobotsDatabaseSettings.cs

@@ -0,0 +1,11 @@
+namespace RobotsWantedLeague.Models;
+
+public class RobotsDatabaseSettings
+{
+    
+    public string ConnectionString { get; set; } = null!;
+
+    public string DatabaseName { get; set; } = null!;
+
+    public string RobotsCollectionName { get; set; } = null!;
+}

RobotsWantedLeague/Program.cs

@@ -1,9 +1,16 @@
+using RobotsWantedLeague.Models;
 using RobotsWantedLeague.Services;
 
 var builder = WebApplication.CreateBuilder(args);
 
+// database settings
+
+builder.Services.Configure<RobotsDatabaseSettings>(
+    builder.Configuration.GetSection("RobotsDatabase"));
+
 // Add services to the container.
 builder.Services.AddControllersWithViews();
+builder.Services.AddSingleton<RobotsService>();
 builder.Services.AddSingleton<IRobotsService, NotEmptyRobotsService>();
 var app = builder.Build();
 

RobotsWantedLeague/RobotsWantedLeague.csproj

@@ -6,4 +6,13 @@
     <ImplicitUsings>enable</ImplicitUsings>
   </PropertyGroup>
 
+  <ItemGroup>
+    <PackageReference Include="MongoDB.Driver" Version="2.21.0" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <Folder Include="Entities\" />
+    <Folder Include="Repositories\" />
+  </ItemGroup>
+
 </Project>

RobotsWantedLeague/Services/IRobotsService.cs

@@ -9,7 +9,7 @@ public interface IRobotsService{
                           int height,
                           string country);
 
-    public Robot? GetRobotById(int id);
+    public Robot? GetRobotById(string id);
 
-    public bool DeleteRobotById(int id);
+    public bool DeleteRobotById(string id);
 }

RobotsWantedLeague/Services/NotEmptyRobotsService.cs

@@ -1,3 +1,6 @@
+using Microsoft.Extensions.Options;
+using MongoDB.Driver;
+
 namespace RobotsWantedLeague.Services;
 
 using RobotsWantedLeague.Models;
@@ -7,12 +10,22 @@ public class NotEmptyRobotsService: IRobotsService
     private readonly IRobotsService underlyingRobotsService;
     public List<Robot> Robots { get => underlyingRobotsService.Robots; }
 
-    public NotEmptyRobotsService()
+    public NotEmptyRobotsService(RobotsService underlyingRobotsService)
     {
-        this.underlyingRobotsService = new RobotsService();
+        this.underlyingRobotsService = underlyingRobotsService;
+        fillDefaultRobotsWhenUnderlyingRobotServiceIsEmpty();
+    }
+
+    private void fillDefaultRobotsWhenUnderlyingRobotServiceIsEmpty()
+    {
+        if (underlyingRobotsService.Robots.Count() != 0)
+        {
+            return;
+        }
         this.underlyingRobotsService.CreateRobot("Alice", 1050, 2, "Bhutan");
         this.underlyingRobotsService.CreateRobot("Bob", 5001, 5, "Vanuatu");
         this.underlyingRobotsService.CreateRobot("Xu", 890, 1, "Taiwan");
+        
     }
 
     public Robot CreateRobot(string name,
@@ -20,15 +33,16 @@ public class NotEmptyRobotsService: IRobotsService
                           int height,
                           string country)
     {
-        return underlyingRobotsService.CreateRobot(name, weight, height, country);
+        var robot = underlyingRobotsService.CreateRobot(name, weight, height, country);
+        return robot;
     }
 
 
-    public Robot? GetRobotById(int id){
+    public Robot? GetRobotById(string id){
         return underlyingRobotsService.GetRobotById(id);
     }
 
-    public bool DeleteRobotById(int id){
+    public bool DeleteRobotById(string id){
         return underlyingRobotsService.DeleteRobotById(id);
     }
 

RobotsWantedLeague/Services/RobotsService.cs

@@ -1,21 +1,25 @@
+using Microsoft.Extensions.Options;
+using MongoDB.Driver;
+
 namespace RobotsWantedLeague.Services;
 
 using RobotsWantedLeague.Models;
 
 public class RobotsService: IRobotsService
 {
-    private readonly List<Robot> robots;
+    private readonly IMongoCollection<Robot> robotsCollection;
-    private int idGenerator = 0;
-    public List<Robot> Robots { get => robots; }
 
-    public RobotsService()
+    public List<Robot> Robots { get => robotsCollection.AsQueryable().ToList(); }
+
+    public RobotsService(IOptions<RobotsDatabaseSettings> bookStoreDatabaseSettings)
     {
-        robots = new List<Robot>();
+        var mongoClient = new MongoClient(
-    }
+            bookStoreDatabaseSettings.Value.ConnectionString);
 
-    private int generateId(){
+        var mongoDatabase = mongoClient.GetDatabase(
-        idGenerator = idGenerator + 1;
+            bookStoreDatabaseSettings.Value.DatabaseName);
-        return idGenerator;
+
+        this.robotsCollection = mongoDatabase.GetCollection<Robot>(bookStoreDatabaseSettings.Value.RobotsCollectionName);
     }
 
     public Robot CreateRobot(string name,
@@ -23,37 +27,24 @@ public class RobotsService: IRobotsService
                           int height,
                           string country)
     {
-        var robot = new Robot(generateId(), name, weight, height, country);
+        var robot = new Robot(null, name, weight, height, country);
-        robots.Add(robot);
+        robotsCollection.InsertOne(robot);
         return robot;
     }
+    
 
-    private int getIndexOfRobotById(int id){
+    public Robot? GetRobotById(string id)
-        int idx = 0;
+    {
-        foreach (Robot robot in robots){
+        IQueryable<Robot> q = from robot in robotsCollection.AsQueryable()
-            if (robot.Id == id){
+            where robot.Id == id
-                return idx;
+            select robot;
-            }
+        return q.First();
-            idx ++;
-        }
-        return -1;
     }
 
-    public Robot? GetRobotById(int id){
+    public bool DeleteRobotById(string id)
-        int indexToDelete = getIndexOfRobotById(id);
+    {
-        if(indexToDelete == -1){
+        var res = robotsCollection.DeleteOne(robot => robot.Id == id);
-            return null;
+        return res != null ;
-        }
-        return robots[indexToDelete];
-    }
-
-    public bool DeleteRobotById(int id){
-        int indexToDelete = getIndexOfRobotById(id);
-        if(indexToDelete == -1){
-            return false;
-        }
-        robots.RemoveAt(indexToDelete);
-        return true;
     }
 
 }

RobotsWantedLeague/Views/Shared/_Layout.cshtml

@@ -83,9 +83,6 @@
     </div>
 
     <footer class="border-top footer text-muted">
-        <div class="container">
-            &copy; 2023 - RobotsWantedLeague - <a asp-area="" asp-controller="Home" asp-action="Privacy">Privacy</a>
-        </div>
     </footer>
     <script src="~/lib/jquery/dist/jquery.min.js"></script>
     <script src="~/lib/bootstrap/dist/js/bootstrap.bundle.min.js"></script>

RobotsWantedLeague/appsettings.json

@@ -5,5 +5,10 @@
       "Microsoft.AspNetCore": "Warning"
     }
   },
+  "RobotsDatabase": {
+    "ConnectionString": "mongodb://localhost:27017",
+    "DatabaseName": "Robots",
+    "RobotsCollectionName": "Robots"
+  },
   "AllowedHosts": "*"
 }