chapter-organizer/WebApp/Components/Features/Events/Edit.razor

@page "/events/edit"
@attribute [Authorize]
@using Microsoft.EntityFrameworkCore
@using WebApp.Components.Shared.Components
@inject AppDbContext context
@inject NavigationManager NavigationManager

@if (EventDefinition is null)
{
    <p><em>Loading...</em></p>
    return;
}

<PageHeader
    Title="Edit"
    Subtitle="Event"
    ShowBackButton="true"
    BackButtonUrl="@(ReturnUrl ?? "/events")" />

<EditForm Model="EventDefinition" OnValidSubmit="OnValidSubmit" Enhance>
    <FormChangeTracker @ref="_formChangeTracker" />
    <AntiforgeryToken />
    <DataAnnotationsValidator />

    <MudStack Spacing="4">
        <MudPaper Elevation="2" Class="pa-6">
            <MudText Typo="Typo.h5" Class="mb-4">Basic Information</MudText>
            <MudGrid Spacing="3">
                <MudItem xs="12" sm="6">
                    <MudTextField T="string" Label="Event Name" @bind-Value="EventDefinition.Name" For="@(() => EventDefinition.Name)" Variant="Variant.Outlined"></MudTextField>
                </MudItem>
                <MudItem xs="12" sm="6">
                    <MudTextField T="string" Label="Short Name" @bind-Value="EventDefinition.ShortName" For="@(() => EventDefinition.ShortName)" Variant="Variant.Outlined"></MudTextField>
                </MudItem>
                <MudItem xs="12">
                    <MudText Typo="Typo.subtitle2" Class="mb-2 mud-text-secondary">Event Format</MudText>
                    <MudRadioGroup T="EventFormat" @bind-Value="@EventDefinition.EventFormat" For="@(() => EventDefinition.EventFormat)">
                        @foreach (EventFormat format in Enum.GetValues(typeof(EventFormat)))
                        {
                            <MudRadio T="EventFormat" Value="@format">@format.ToString()</MudRadio>
                        }
                    </MudRadioGroup>
                </MudItem>
                <MudItem xs="12" sm="6">
                    <MudNumericField T="int?" Label="Level of Effort" @bind-Value="EventDefinition.LevelOfEffort" For="@(() => EventDefinition.LevelOfEffort)" Variant="Variant.Outlined"></MudNumericField>
                </MudItem>
            </MudGrid>
        </MudPaper>

        <MudPaper Elevation="2" Class="pa-6">
            <MudText Typo="Typo.h5" Class="mb-4">Event Details</MudText>
            <MudGrid Spacing="3">
                <MudItem xs="12">
                    <MudTextField T="string" Label="Description" AutoGrow="true" Lines="3" @bind-Value="EventDefinition.Description" For="@(() => EventDefinition.Description)" Variant="Variant.Outlined"></MudTextField>
                </MudItem>
                <MudItem xs="12">
                    <MudTextField T="string" Label="Theme" AutoGrow="true" Lines="2" @bind-Value="EventDefinition.Theme" For="@(() => EventDefinition.Theme)" Variant="Variant.Outlined"></MudTextField>
                </MudItem>
                <MudItem xs="12">
                    <MudTextField T="string" Label="Documentation" @bind-Value="EventDefinition.Documentation" For="@(() => EventDefinition.Documentation)" Variant="Variant.Outlined"></MudTextField>
                </MudItem>
            </MudGrid>
        </MudPaper>

        <MudPaper Elevation="2" Class="pa-6">
            <MudText Typo="Typo.h5" Class="mb-4">Team Configuration</MudText>
            <MudGrid Spacing="3">
                <MudItem xs="12">
                    <MudTextField T="string" Label="Nationals Eligibility" @bind-Value="EventDefinition.Eligibility" For="@(() => EventDefinition.Eligibility)" Variant="Variant.Outlined"></MudTextField>
                </MudItem>
                <MudItem xs="12" sm="6">
                    <MudNumericField T="int" Label="Minimum Team Size" @bind-Value="EventDefinition.MinTeamSize" For="@(() => EventDefinition.MinTeamSize)" Variant="Variant.Outlined"></MudNumericField>
                </MudItem>
                <MudItem xs="12" sm="6">
                    <MudNumericField T="int" Label="Maximum Team Size" @bind-Value="EventDefinition.MaxTeamSize" For="@(() => EventDefinition.MaxTeamSize)" Variant="Variant.Outlined"></MudNumericField>
                </MudItem>
                <MudItem xs="12" sm="6">
                    <MudNumericField T="int" Label="Team Count at Regionals" @bind-Value="EventDefinition.ChapterEligibilityCountRegionals" For="@(() => EventDefinition.ChapterEligibilityCountRegionals)" Variant="Variant.Outlined"></MudNumericField>
                </MudItem>
                <MudItem xs="12" sm="6">
                    <MudNumericField T="int" Label="Team Count at State" @bind-Value="EventDefinition.ChapterEligibilityCountState" For="@(() => EventDefinition.ChapterEligibilityCountState)" Variant="Variant.Outlined"></MudNumericField>
                </MudItem>
            </MudGrid>
        </MudPaper>

        <MudPaper Elevation="2" Class="pa-6">
            <MudText Typo="Typo.h5" Class="mb-4">Competition Details</MudText>
            <MudGrid Spacing="3">
                <MudItem xs="12">
                    <MudTextField T="string" Label="Semifinalist Activity" @bind-Value="EventDefinition.SemifinalistActivity" For="@(() => EventDefinition.SemifinalistActivity)" Variant="Variant.Outlined"></MudTextField>
                </MudItem>
                <MudItem xs="12">
                    <MudCheckBox T="bool" Label="On Site Activity" @bind-Value="EventDefinition.OnSiteActivity" For="@(() => EventDefinition.OnSiteActivity)"></MudCheckBox>
                </MudItem>
                <MudItem xs="12">
                    <MudCheckBox T="bool" Label="Requires Presubmission" @bind-Value="EventDefinition.Presubmission" For="@(() => EventDefinition.Presubmission)"></MudCheckBox>
                </MudItem>
            </MudGrid>

            <FormActions>
                <MudButton ButtonType="ButtonType.Submit" Variant="Variant.Filled" Color="Color.Primary">Save</MudButton>
                <MudButton OnClick="HandleCancel" Variant="Variant.Text">Cancel</MudButton>
            </FormActions>
        </MudPaper>
    </MudStack>
</EditForm>

@code {
    [SupplyParameterFromQuery]
    private int Id { get; set; }

    [SupplyParameterFromQuery]
    private string? ReturnUrl { get; set; }

    [SupplyParameterFromForm]
    private EventDefinition? EventDefinition { get; set; }

    private FormChangeTracker? _formChangeTracker;

    protected override async Task OnInitializedAsync()
    {
        EventDefinition ??= await context.Events.FirstOrDefaultAsync(m => m.Id == Id);

        if (EventDefinition is null)
        {
            NavigationManager.NavigateTo("notfound");
        }
    }

    // To protect from overposting attacks, enable the specific properties you want to bind to.
    // For more information, see https://learn.microsoft.com/aspnet/core/blazor/forms/#mitigate-overposting-attacks.
    private void OnValidSubmit()
    {
        context.Attach(EventDefinition!).State = EntityState.Modified;

        try
        {
            context.SaveChangesAsync();
            _formChangeTracker?.AllowNavigation();
            NavigationManager.NavigateTo(ReturnUrl ?? "/events");
        }
        catch (DbUpdateConcurrencyException)
        {
            if (!EventDefinitionExists(EventDefinition!.Id))
            {
                NavigationManager.NavigateTo("notfound");
            }
            else
            {
                throw;
            }
        }
    }

    private async Task HandleCancel()
    {
        // Discard all in-memory changes by reloading from database
        if (EventDefinition != null)
        {
            await context.Entry(EventDefinition).ReloadAsync();
        }

        _formChangeTracker?.AllowNavigation();
        NavigationManager.NavigateTo(ReturnUrl ?? "/events");
    }

    private bool EventDefinitionExists(int id)
    {
        return context.Events.Any(e => e.Id == id);
    }
}