@page "/settings"
@attribute [Authorize]
@rendermode InteractiveServer
@inject AdminConfigService AdminConfig
@inject NavigationManager Navigation

<PageTitle>Admin Settings</PageTitle>

<h3>Admin Settings</h3>

@if (saved)
{
    <div class="alert alert-success alert-dismissible fade show" role="alert">
        Settings saved. New sessions will use the updated URLs.
        <button type="button" class="btn-close" data-bs-dismiss="alert" aria-label="Close"></button>
    </div>
}

@if (error)
{
    <div class="alert alert-danger alert-dismissible fade show" role="alert">
        @errorMessage
        <button type="button" class="btn-close" data-bs-dismiss="alert" aria-label="Close"></button>
    </div>
}

<div class="card mb-4">
    <div class="card-body">
        <p class="text-muted">
            These settings control where the admin panel connects to the CannedNet server API.
            If you accidentally change this to the wrong server, please manually change the URL in <code>admin_config.json</code>.
        </p>

        <div class="mb-3">
            <label for="serverUrl" class="form-label">Server Base URL</label>
            <input type="url" class="form-control" id="serverUrl" @bind="edit.ServerBaseUrl" />
        </div>

        <button class="btn btn-primary" @onclick="Save" disabled="@saving">
            @(saving ? "Saving..." : "Save Settings")
        </button>
    </div>
</div>

@code {
    private AdminConfigService.AdminConfigData edit = new();
    private bool saving;
    private bool saved;
    private bool error;
    private string errorMessage = "";

    protected override void OnInitialized()
    {
        edit = new AdminConfigService.AdminConfigData
        {
            ServerBaseUrl = AdminConfig.ServerBaseUrl
        };
    }

    private async Task Save()
    {
        saving = true;
        saved = false;
        error = false;
        errorMessage = "";

        try
        {
            if (string.IsNullOrWhiteSpace(edit.ServerBaseUrl))
            {
                error = true;
                errorMessage = "Server Base URL cannot be empty.";
                return;
            }

            if (!Uri.TryCreate(edit.ServerBaseUrl, UriKind.Absolute, out _))
            {
                error = true;
                errorMessage = "Server Base URL is not a valid absolute URL.";
                return;
            }

            AdminConfig.Save(edit);
            saved = true;
        }
        finally
        {
            saving = false;
        }
    }
}