Add edit view for Compact Disc Offset with form validation

Aaru.Server/Components/Admin/Pages/CompactDiscOffsets/Edit.razor

@@ -0,0 +1,56 @@
+@page "/admin/cd-offsets/edit/{Id:int}"
+@attribute [Authorize]
+@layout AdminLayout
+@rendermode InteractiveServer
+
+@inject Microsoft.EntityFrameworkCore.IDbContextFactory<DbContext> DbContextFactory
+
+<PageTitle>Edit Compact Disc Offset</PageTitle>
+
+@if(_notFound)
+{
+    <div class="alert alert-danger mt-3">Offset not found.</div>
+}
+else
+{
+    <EditForm Model="_model" OnValidSubmit="HandleValidSubmit">
+        <DataAnnotationsValidator />
+        <ValidationSummary />
+        <div class="mb-3">
+            <label class="form-label">Manufacturer</label>
+            <InputText class="form-control" @bind-Value="_model.Manufacturer" />
+            <ValidationMessage For="@(() => _model.Manufacturer)" />
+        </div>
+        <div class="mb-3">
+            <label class="form-label">Model</label>
+            <InputText class="form-control" @bind-Value="_model.Model" />
+            <ValidationMessage For="@(() => _model.Model)" />
+        </div>
+        <div class="mb-3">
+            <label class="form-label">Offset</label>
+            <InputNumber class="form-control" @bind-Value="_model.Offset" />
+            <ValidationMessage For="@(() => _model.Offset)" />
+        </div>
+        <div class="mb-3">
+            <label class="form-label">Submissions</label>
+            <InputNumber class="form-control" @bind-Value="_model.Submissions" />
+            <ValidationMessage For="@(() => _model.Submissions)" />
+        </div>
+        <div class="mb-3">
+            <label class="form-label">Agreement</label>
+            <InputNumber class="form-control" @bind-Value="_model.Agreement" step="0.01" />
+            <ValidationMessage For="@(() => _model.Agreement)" />
+        </div>
+        <button type="submit" class="btn btn-primary">Save</button>
+        <a href="/admin/cd-offsets" class="btn btn-secondary ms-2">Cancel</a>
+    </EditForm>
+}
+
+@if(_success)
+{
+    <div class="alert alert-success mt-3">Offset saved successfully.</div>
+}
+@if(_error)
+{
+    <div class="alert alert-danger mt-3">Error saving offset.</div>
+}

Aaru.Server/Components/Admin/Pages/CompactDiscOffsets/Edit.razor.cs

@@ -0,0 +1,89 @@
+using System.ComponentModel.DataAnnotations;
+using Aaru.Server.Database.Models;
+using Microsoft.AspNetCore.Components;
+using DbContext = Aaru.Server.Database.DbContext;
+
+namespace Aaru.Server.Components.Admin.Pages.CompactDiscOffsets;
+
+public partial class Edit : ComponentBase
+{
+    private bool            _error;
+    private OffsetEditModel _model = new();
+    private bool            _notFound;
+    private bool            _success;
+    [Parameter]
+    public int Id { get; set; }
+
+    protected override async Task OnInitializedAsync()
+    {
+        await using DbContext ctx    = await DbContextFactory.CreateDbContextAsync();
+        CompactDiscOffset?    entity = await ctx.CdOffsets.FindAsync(Id);
+
+        if(entity != null)
+        {
+            _model = new OffsetEditModel
+            {
+                Id           = entity.Id,
+                Manufacturer = entity.Manufacturer,
+                Model        = entity.Model,
+                Offset       = entity.Offset,
+                Submissions  = entity.Submissions,
+                Agreement    = entity.Agreement
+            };
+        }
+        else
+            _notFound = true;
+    }
+
+    private async Task HandleValidSubmit()
+    {
+        _success = false;
+        _error   = false;
+
+        try
+        {
+            await using DbContext ctx    = await DbContextFactory.CreateDbContextAsync();
+            CompactDiscOffset?    entity = await ctx.CdOffsets.FindAsync(_model.Id);
+
+            if(entity == null)
+            {
+                _error = true;
+
+                return;
+            }
+
+            entity.Manufacturer = _model.Manufacturer;
+            entity.Model        = _model.Model;
+            entity.Offset       = _model.Offset;
+            entity.Submissions  = _model.Submissions;
+            entity.Agreement    = _model.Agreement;
+            entity.ModifiedWhen = DateTime.UtcNow;
+            await ctx.SaveChangesAsync();
+            _success = true;
+        }
+        catch
+        {
+            _error = true;
+        }
+    }
+
+    public class OffsetEditModel
+    {
+        public int Id { get; set; }
+        [Required]
+        [StringLength(100)]
+        public string Manufacturer { get; set; } = string.Empty;
+        [Required]
+        [StringLength(100)]
+        public string Model { get; set; } = string.Empty;
+        [Required]
+        [Range(-10000, 10000)]
+        public short Offset { get; set; }
+        [Required]
+        [Range(0, int.MaxValue)]
+        public int Submissions { get; set; }
+        [Required]
+        [Range(0, 100)]
+        public float Agreement { get; set; }
+    }
+}