Implemented GetChargerById for statistics feature on web development

SmartCharger.Business/Interfaces/IChargerService.cs

@@ -6,6 +6,7 @@ public interface IChargerService
     {
         Task<ChargerResponseDTO> CreateNewCharger(ChargerDTO charger);
         Task<ChargerResponseDTO> GetAllChargers(int page, int pageSize, string search);
+        Task<ChargerResponseDTO> GetChargerById(int chargerId);
         Task<ChargerResponseDTO> UpdateCharger(int chargerId, ChargerDTO charger);
         Task<ChargerResponseDTO> DeleteCharger(int chargerId);
 

SmartCharger.Business/Services/ChargerService.cs

@@ -295,5 +295,38 @@ private void UpdateCharger(Charger chargerEntity, ChargerDTO charger)
             chargerEntity.Latitude = charger.Latitude;
             chargerEntity.Longitude = charger.Longitude;
         }
+
+        public async Task<ChargerResponseDTO> GetChargerById(int chargerId)
+        {
+            try
+            {
+
+                var charger = await _context.Chargers.SingleOrDefaultAsync(c => c.Id == chargerId);
+                if (charger == null)
+                {
+                    return new ChargerResponseDTO
+                    {
+                        Success = false,
+                        Message = "Charger with that ID doesn't exist.",
+                        Charger = null
+                    };
+                }
+                return new ChargerResponseDTO
+                {
+                    Success = true,
+                    Message = $"Charger exists.",
+                    Charger = MapChargerToDTO(charger)
+                };
+            }
+            catch (Exception ex)
+            {
+                return new ChargerResponseDTO
+                {
+                    Success = false,
+                    Message = "An error occurred: " + ex.Message,
+                    Charger = null
+                };
+            }
+        }
     }
 }

SmartCharger.Test/ControllerTests/ChargerControllerTests.cs

@@ -497,5 +497,71 @@ public async Task UpdateCharger_WhenChargersNameInvalid_ShouldReturnBadRequest()
             Assert.Equal("Name of the charger cannot be empty.", response.Error);
 
         }
+
+        [Fact]
+        public async Task GetChargerById_WhenChargerServiceReturnsCharger_ShouldReturnOk()
+        {
+            // Arrange
+            var chargerServiceMock = new Mock<IChargerService>();
+            chargerServiceMock.Setup(service => service.GetChargerById(It.IsAny<int>())).ReturnsAsync(new ChargerResponseDTO
+            {
+                Success = true,
+                Message = "Charger exists.",
+                Charger = new ChargerDTO
+                {
+                    Id = 1,
+                    Name = "Charger 1",
+                    Latitude = 55,
+                    Longitude = 50,
+                }
+            });
+
+            var controller = new ChargerController(chargerServiceMock.Object);
+
+            // Act
+            var actionResult = await controller.GetChargerById(1);
+
+            // Assert
+            Assert.NotNull(actionResult);
+            var result = actionResult.Result as ObjectResult;
+            Assert.Equal(200, result.StatusCode);
+            var response = result.Value as ChargerResponseDTO;
+            Assert.NotNull(response);
+            Assert.True(response.Success);
+            Assert.Equal("Charger exists.", response.Message);
+            Assert.Equal(1, response.Charger.Id);
+            Assert.Equal(55, response.Charger.Latitude);
+            Assert.Equal(50, response.Charger.Longitude);
+            Assert.Equal("Charger 1", response.Charger.Name);
+        }
+
+        [Fact]
+        public async Task GetChargerById_WhenChargerServiceReturnsNoCharger_ShouldReturnBadRequest()
+        {
+            // Arrange
+            var chargerServiceMock = new Mock<IChargerService>();
+            chargerServiceMock.Setup(service => service.GetChargerById(It.IsAny<int>())).ReturnsAsync(new ChargerResponseDTO
+            {
+                Success = false,
+                Message = "Charger with that ID doesn't exist.",
+                Charger = null
+            });
+
+            var controller = new ChargerController(chargerServiceMock.Object);
+
+            // Act
+            var actionResult = await controller.GetChargerById(2);
+
+            // Assert
+            Assert.NotNull(actionResult);
+            var result = actionResult.Result as ObjectResult;
+            Assert.Equal(400, result.StatusCode);
+            var response = result.Value as ChargerResponseDTO;
+            Assert.NotNull(response);
+            Assert.False(response.Success);
+            Assert.Equal("Charger with that ID doesn't exist.", response.Message);
+            Assert.Null(response.Charger);
+        }
+
     }
 }

SmartCharger.Test/ServicesTests/ChargerServiceTests.cs

@@ -12,6 +12,7 @@
 using System.Text;
 using System.Threading.Channels;
 using System.Threading.Tasks;
+using System.Xml.Linq;
 using static System.Runtime.InteropServices.JavaScript.JSType;
 
 namespace SmartCharger.Test.ServicesTests
@@ -427,6 +428,66 @@ public async Task DeleteCharger_WhenChargerDoesntExist_ShouldReturnFailure()
 
         }
 
+        [Fact]
+        public async Task GetChargerById_WhenChargerExists_ShouldReturnCharger()
+        {
+            // Arrange
+            var options = new DbContextOptionsBuilder<SmartChargerContext>()
+                .UseInMemoryDatabase(databaseName: "ChargerServiceDatabaseGetById1")
+                .Options;
+
+            using (var context = new SmartChargerContext(options))
+            {
+                SetupChargerDatabase(context);
+            }
+
+            using (var context = new SmartChargerContext(options))
+            {
+                var chargerService = new ChargerService(context);
+
+                // Act
+                ChargerResponseDTO result = await chargerService.GetChargerById(1);
+
+                // Assert
+                Assert.True(result.Success);
+                Assert.Equal("Charger exists.", result.Message);
+                Assert.NotNull(result.Charger);
+                Assert.Equal("Charger 1", result.Charger.Name);
+                Assert.Equal(1, result.Charger.Id);
+                Assert.Equal("Charger 1", result.Charger.Name);
+                Assert.Equal(40.7128, result.Charger.Latitude);
+                Assert.Equal(-74.0060, result.Charger.Longitude);
+            }
+        }
+
+        [Fact]
+        public async Task GetChargerById_WhenChargerDoesNotExist_ShouldReturnFailure()
+        {
+            // Arrange
+            var options = new DbContextOptionsBuilder<SmartChargerContext>()
+                .UseInMemoryDatabase(databaseName: "ChargerServiceDatabaseGetById")
+                .Options;
+
+            using (var context = new SmartChargerContext(options))
+            {
+                SetupChargerDatabase(context);
+            }
+
+            using (var context = new SmartChargerContext(options))
+            {
+                var chargerService = new ChargerService(context);
+
+                // Act
+                ChargerResponseDTO result = await chargerService.GetChargerById(3);
+
+                // Assert
+                Assert.False(result.Success);
+                Assert.Equal("Charger with that ID doesn't exist.", result.Message);
+                Assert.Null(result.Charger);
+            }
+        }
+
+
         private void SetupChargerDatabase(SmartChargerContext context)
         {
             var chargers = new List<Charger>

SmartCharger/Controllers/ChargerController.cs

@@ -70,5 +70,18 @@ public async Task<IActionResult> UpdateCharger(int chargerId, [FromBody]ChargerD
 
             return Ok(response);
         }
+
+        [Authorize(Policy = "Admin")]
+        [HttpGet("admin/chargers/{chargerId}")]
+        public async Task<ActionResult<IEnumerable<ChargerResponseDTO>>> GetChargerById(int chargerId)
+        {
+            ChargerResponseDTO response = await _chargerService.GetChargerById(chargerId);
+            if (response.Success == false)
+            {
+                return BadRequest(response);
+            }
+
+            return Ok(response);
+        }
     }
 }

SmartCharger/appsettings.Development.json

@@ -6,7 +6,7 @@
     }
   },
   "ConnectionStrings": {
-    "Connection": "Server=dumbo.db.elephantsql.com;Username=oupptaev;Password=y8ezc0d592OdRc-vFXnyFfsiLk3rebQa;Database=oupptaev;"
+    "connection": "Server=localhost;Port=5432;Database=postgres;User Id=postgres;Password=1234;"
   },
   "AllowedHosts": "*",
   "JWT": {

SmartCharger/appsettings.json

@@ -6,7 +6,7 @@
     }
   },
   "ConnectionStrings": {
-    "Connection": "Server=dumbo.db.elephantsql.com;Username=oupptaev;Password=y8ezc0d592OdRc-vFXnyFfsiLk3rebQa;Database=oupptaev;",
+    "connection": "Server=localhost;Port=5432;Database=postgres;User Id=postgres;Password=1234;"
   },
   "AllowedHosts": "*",
   "JWT": {