Implemented adding weight logs

src/backend/src/FoodDiary.API/Features/WeightTracking/AddWeightLogHandler.cs

@@ -0,0 +1,34 @@
+using System.Threading;
+using System.Threading.Tasks;
+using FoodDiary.API.Features.WeightTracking.Contracts;
+using FoodDiary.Domain.WeightTracking;
+using FoodDiary.Infrastructure;
+using Microsoft.AspNetCore.Http;
+using Microsoft.EntityFrameworkCore;
+
+namespace FoodDiary.API.Features.WeightTracking;
+
+public class AddWeightLogHandler(FoodDiaryContext context)
+{
+    public async Task<IResult> Handle(WeightLogBody request, CancellationToken cancellationToken)
+    {
+        var weightLogExists = await context.WeightLogs.AnyAsync(wl => wl.Date == request.Date, cancellationToken);
+
+        if (weightLogExists)
+        {
+            return Results.Problem(
+                title: "Failed to add weight log",
+                detail: "Weight log with such date already exists, please choose another date");
+        }
+
+        var weightLog = new WeightLog
+        {
+            Date = request.Date.GetValueOrDefault(),
+            Weight = request.Value
+        };
+
+        await context.WeightLogs.AddAsync(weightLog, cancellationToken);
+        await context.SaveChangesAsync(cancellationToken);
+        return Results.Ok();
+    }
+}

src/backend/src/FoodDiary.API/Features/WeightTracking/Endpoints.cs

@@ -3,7 +3,6 @@
 using System.Threading;
 using FoodDiary.API.Features.WeightTracking.Contracts;
 using Microsoft.AspNetCore.Builder;
-using Microsoft.AspNetCore.Http;
 using Microsoft.AspNetCore.Mvc;
 using Microsoft.AspNetCore.Routing;
 using Microsoft.Extensions.DependencyInjection;
@@ -18,19 +17,22 @@ public static void MapWeightLogs(this IEndpointRouteBuilder app)
             .RequireAuthorization(Constants.AuthorizationPolicies.GoogleAllowedEmails);
 
         weightLogs.MapGet("/", (
-                [Required] DateOnly? from,
-                [Required] DateOnly? to,
-                [FromServices] GetWeightLogsHandler handler,
-                CancellationToken cancellationToken) =>
-            handler.Handle(
-                new GetWeightLogsRequest(from.GetValueOrDefault(), to.GetValueOrDefault()),
-                cancellationToken));
-
-        weightLogs.MapPost("/", (WeightLogBody request) => Results.Ok());
+            [Required] DateOnly? from,
+            [Required] DateOnly? to,
+            [FromServices] GetWeightLogsHandler handler,
+            CancellationToken cancellationToken) => handler.Handle(
+            new GetWeightLogsRequest(from.GetValueOrDefault(), to.GetValueOrDefault()),
+            cancellationToken));
+
+        weightLogs.MapPost("/", (
+            [FromBody] WeightLogBody request,
+            [FromServices] AddWeightLogHandler handler,
+            CancellationToken cancellationToken) => handler.Handle(request, cancellationToken));
     }
-    
+
     public static void AddWeightLogs(this IServiceCollection services)
     {
         services.AddScoped<GetWeightLogsHandler>();
+        services.AddScoped<AddWeightLogHandler>();
     }
 }

src/backend/src/FoodDiary.API/Features/GetWeightLogsHandler.cs → src/backend/src/FoodDiary.API/Features/WeightTracking/GetWeightLogsHandler.cs

@@ -1,13 +1,12 @@
 using System.Linq;
 using System.Threading;
 using System.Threading.Tasks;
-using FoodDiary.API.Features.WeightTracking;
 using FoodDiary.API.Features.WeightTracking.Contracts;
 using FoodDiary.Infrastructure;
 using Microsoft.AspNetCore.Http;
 using Microsoft.EntityFrameworkCore;
 
-namespace FoodDiary.API.Features;
+namespace FoodDiary.API.Features.WeightTracking;
 
 public class GetWeightLogsHandler(FoodDiaryContext context)
 {

src/backend/src/FoodDiary.API/Features/WeightTracking/Mappings.cs

@@ -6,4 +6,10 @@ namespace FoodDiary.API.Features.WeightTracking;
 public static class Mappings
 {
     public static WeightLogItem ToWeightLogItem(this WeightLog weightLog) => new(weightLog.Date, weightLog.Weight);
+
+    public static WeightLogBody ToWeightLogBody(this WeightLog weightLog) => new()
+    {
+        Date = weightLog.Date,
+        Value = weightLog.Weight
+    };
 }

src/backend/tests/FoodDiary.ComponentTests/Scenarios/WeightTracking/WeightLogsApiContext.cs

@@ -1,3 +1,4 @@
+using System.Net;
 using System.Net.Http.Json;
 using FoodDiary.API.Features.WeightTracking;
 using FoodDiary.API.Features.WeightTracking.Contracts;
@@ -10,6 +11,7 @@ public class WeightLogsApiContext(FoodDiaryWebApplicationFactory factory, Infras
     : BaseContext(factory, infrastructure)
 {
     private GetWeightLogsResponse? _getWeightLogsResponse;
+    private HttpResponseMessage? _addWeightLogResponse;
 
     public Task Given_existing_weightLogs(params WeightLog[] weightLogs)
     {
@@ -22,11 +24,22 @@ public async Task When_user_gets_weightLogs(string from, string to)
             .GetFromJsonAsync<GetWeightLogsResponse>($"api/weight-logs?from={from}&to={to}");
     }
 
+    public async Task When_user_adds_weightLog(WeightLog weightLog)
+    {
+        _addWeightLogResponse = await ApiClient.PostAsJsonAsync("api/weight-logs", weightLog.ToWeightLogBody());
+    }
+
     public Task Then_response_contains_weightLogs(params WeightLog[] items)
     {
         _getWeightLogsResponse?.WeightLogs.Should()
             .ContainInOrder(items.Select(wl => wl.ToWeightLogItem()))
             .And.HaveSameCount(items);
         return Task.CompletedTask;
     }
+
+    public Task Then_weight_is_successfully_saved()
+    {
+        _addWeightLogResponse?.StatusCode.Should().Be(HttpStatusCode.OK);
+        return Task.CompletedTask;
+    }
 }

src/backend/tests/FoodDiary.ComponentTests/Scenarios/WeightTracking/WeightLogsApiTests.cs

@@ -9,32 +9,33 @@ public class WeightLogsApiTests(FoodDiaryWebApplicationFactory factory, Infrastr
     protected override WeightLogsApiContext CreateContext(
         FoodDiaryWebApplicationFactory factory,
         InfrastructureFixture infrastructure) => new(factory, infrastructure);
-
+
+    private static WeightLog[] WeightLogs =>
+    [
+        new() { Date = DateOnly.Parse("2024-10-01"), Weight = 75.6m },
+        new() { Date = DateOnly.Parse("2024-10-02"), Weight = 76.5m },
+        new() { Date = DateOnly.Parse("2024-10-03"), Weight = 76.2m },
+        new() { Date = DateOnly.Parse("2024-10-04"), Weight = 75.9m }
+    ];
+
+    [Scenario]
+    public Task I_can_get_weight_logs() => Run(
+        c => c.Given_authenticated_user(),
+        c => c.Given_existing_weightLogs(WeightLogs),
+        c => c.When_user_gets_weightLogs("2024-10-02", "2024-10-03"),
+        c => c.Then_response_contains_weightLogs(WeightLogs[2], WeightLogs[1]));
+
     [Scenario]
-    public Task I_can_get_weight_logs()
+    public Task I_can_log_my_weight()
     {
-        var weightLogs = new WeightLog[]
-        {
-            new() { Date = DateOnly.Parse("2024-10-01"), Weight = 75.6m },
-            new() { Date = DateOnly.Parse("2024-10-02"), Weight = 76.5m },
-            new() { Date = DateOnly.Parse("2024-10-03"), Weight = 76.2m },
-            new() { Date = DateOnly.Parse("2024-10-04"), Weight = 75.9m }
-        };
+        var newWeightLog = new WeightLog { Date = DateOnly.Parse("2024-10-05"), Weight = 76.3m };
 
         return Run(
             c => c.Given_authenticated_user(),
-            c => c.Given_existing_weightLogs(weightLogs),
-            c => c.When_user_gets_weightLogs("2024-10-02", "2024-10-03"),
-            c => c.Then_response_contains_weightLogs(weightLogs[2], weightLogs[1]));
+            c => c.Given_existing_weightLogs(WeightLogs),
+            c => c.When_user_adds_weightLog(newWeightLog),
+            c => c.Then_weight_is_successfully_saved(),
+            c => c.When_user_gets_weightLogs("2024-10-03", "2024-10-05"),
+            c => c.Then_response_contains_weightLogs(newWeightLog, WeightLogs[3], WeightLogs[2]));
     }
-
-    // [Scenario]
-    // public Task I_can_add_weight_log()
-    // {
-    //     return Run(
-    //         c => c.When_user_adds_weight_log(),
-    //         c => c.Then_weight_log_is_successfully_created(),
-    //         c => c.When_user_gets_weight_logs(),
-    //         c => c.Then_weight_logs_list_contains([]));
-    // }
 }