Added backend functionality

src/WorkTime.Api/Controller/EntryController.cs

@@ -0,0 +1,28 @@
+using Microsoft.AspNetCore.Mvc;
+using WorkTime.Api.Models;
+using WorkTime.Api.Services;
+
+namespace WorkTime.Api.Controller;
+
+[ApiController, Route("entries")]
+public class EntryController(ITimeEntryService entryService) : ControllerBase {
+
+    [HttpGet("{id:guid}")]
+    public async Task<IResult> GetEntries(Guid id) {
+        var result = await entryService.GetTimeEntries(id);
+        return result.HttpResult;
+    }
+
+    [HttpPost("{id:guid}")]
+    public async Task<IResult> AddEntry(Guid id, TimeEntryDto entry) {
+        var result = await entryService.AddTimeEntry(id, entry);
+        return result.HttpResult;
+    }
+
+    [HttpDelete("{id:int}")]
+    public async Task<IResult> DeleteEntry(int id) {
+        var result = await entryService.RemoveTimeEntry(id);
+        return result.HttpResult;
+    }
+    
+}

src/WorkTime.Api/DatabaseContext.cs

@@ -0,0 +1,10 @@
+using Microsoft.EntityFrameworkCore;
+using WorkTime.Api.Models;
+
+namespace WorkTime.Api;
+
+public class DatabaseContext(DbContextOptions<DatabaseContext> options) : DbContext(options) {
+
+    public DbSet<TimeEntry> Entries { get; set; }
+    
+}

src/WorkTime.Api/Models/TimeEntry.cs

@@ -1,7 +1,15 @@
-namespace WorkTime.Api.Models;
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
 
-public class TimeEntry {
+namespace WorkTime.Api.Models;
+
+public class TimeEntry : TimeEntryDto {
+    [Key, DatabaseGenerated(DatabaseGeneratedOption.Identity)]
+    public int EntryId { get; set; }
     public Guid Owner { get; set; }
+}
+
+public class TimeEntryDto {
     public DateTime RegisteredAt { get; set; }
     public EntryType Type { get; set; }
     public bool IsMoba { get; set; }

src/WorkTime.Api/Program.cs

@@ -1,15 +1,35 @@
+using Scalar.AspNetCore;
+using WorkTime.Api;
+using WorkTime.Api.Services;
+using WorkTime.Api.Services.Implementation;
+
 var builder = WebApplication.CreateBuilder(args);
 
 // Add services to the container.
 // Learn more about configuring OpenAPI at https://aka.ms/aspnet/openapi
 builder.Services.AddOpenApi();
+builder.AddServiceDefaults();
+builder.Services.AddControllers();
+
+builder.Services.AddProblemDetails();
+builder.Services.AddNpgsql<DatabaseContext>(builder.Configuration.GetConnectionString("data"));
+builder.Services.AddScoped<ITimeEntryService, TimeEntryService>();
 
 var app = builder.Build();
 
 // Configure the HTTP request pipeline.
 if (app.Environment.IsDevelopment()) {
     app.MapOpenApi();
+    app.MapScalarApiReference(options => {
+        options.Servers = [];
+    });
+
+    await app.Services
+        .CreateAsyncScope().ServiceProvider
+        .GetRequiredService<DatabaseContext>()
+        .Database.EnsureCreatedAsync();
 }
 
 app.UseHttpsRedirection();
+app.MapControllers();
 app.Run();

src/WorkTime.Api/Services/ITimeEntryService.cs

@@ -0,0 +1,14 @@
+using WorkTime.Api.Models;
+using WorkTime.Defaults;
+
+namespace WorkTime.Api.Services;
+
+public interface ITimeEntryService {
+
+    public Task<DataResult<IEnumerable<TimeEntry>>> GetTimeEntries(Guid owner);
+
+    public Task<DataResult> AddTimeEntry(Guid owner, TimeEntryDto entry);
+
+    public Task<DataResult<bool, IResult>> RemoveTimeEntry(int id);
+
+}

src/WorkTime.Api/Services/Implementation/TimeEntryService.cs

@@ -0,0 +1,37 @@
+using Microsoft.EntityFrameworkCore;
+using WorkTime.Api.Models;
+using WorkTime.Defaults;
+
+namespace WorkTime.Api.Services.Implementation;
+
+public class TimeEntryService(DatabaseContext context) : ITimeEntryService {
+    public async Task<DataResult<IEnumerable<TimeEntry>>> GetTimeEntries(Guid owner) {
+        return await context.Entries
+            .Where(entry => entry.Owner == owner)
+            .ToArrayAsync();
+    }
+
+    public async Task<DataResult> AddTimeEntry(Guid owner, TimeEntryDto entry) {
+        var dbEntry = new TimeEntry {
+            Owner = owner,
+            RegisteredAt = entry.RegisteredAt,
+            Type = entry.Type,
+            IsMoba = entry.IsMoba
+        };
+
+        await context.Entries.AddAsync(dbEntry);
+        await context.SaveChangesAsync();
+        return true;
+    }
+
+    public async Task<DataResult<bool, IResult>> RemoveTimeEntry(int id) {
+        var entry = await context.Entries.FindAsync(id);
+
+        if (entry is null)
+            return TypedResults.NotFound();
+
+        context.Entries.Remove(entry);
+        await context.SaveChangesAsync();
+        return true;
+    }
+}

src/WorkTime.Api/WorkTime.Api.csproj

@@ -8,7 +8,9 @@
     </PropertyGroup>
 
     <ItemGroup>
+        <PackageReference Include="Aspire.Npgsql.EntityFrameworkCore.PostgreSQL" Version="9.1.0" />
         <PackageReference Include="Microsoft.AspNetCore.OpenApi" Version="9.0.0"/>
+        <PackageReference Include="Scalar.AspNetCore" Version="2.0.20" />
     </ItemGroup>
 
     <ItemGroup>
@@ -17,4 +19,8 @@
       </Content>
     </ItemGroup>
 
+    <ItemGroup>
+      <ProjectReference Include="..\..\WorkTime.Defaults\WorkTime.Defaults.csproj" />
+    </ItemGroup>
+
 </Project>